[ { "id": "https://authors.library.caltech.edu/records/40vnv-zb438", "eprint_id": 109528, "eprint_status": "archive", "datestamp": "2023-08-22 10:11:12", "lastmod": "2023-10-23 18:01:22", "type": "book_section", "metadata_visibility": "show", "creators": { "items": [ { "id": "Li-Xueqian", "name": { "family": "Li", "given": "Xueqian" }, "orcid": "0000-0002-1197-3743" }, { "id": "Liu-Jie", "name": { "family": "Liu", "given": "Jie" } }, { "id": "Everitt-Henry-O", "name": { "family": "Everitt", "given": "Henry O." } } ] }, "title": "Untangling Thermal and Nonthermal Effects in Plasmonic Photocatalysis", "ispublished": "unpub", "full_text_status": "restricted", "keywords": "Photothermal effect; plasmonic photocatalysis; thermal gradient; nonthermal effect; hot carriers", "note": "\u00a9 2021 Wiley-VCH GmbH. \n\nPublished Online: 11 June 2021.", "abstract": "This chapter introduces a methodology to distinguish the thermal and nonthermal contributions in an illuminated, plasmon-enhanced catalyst. Although nonthermal effects in light-driven reactions are deservedly drawing much attention, photothermal effects may prove to be even more beneficial because of the way illumination can tailor thermal profiles within a catalyst. The technique presented here extracts the effective thermal and nonthermal reaction rates under illumination by simultaneously measuring the total reaction rate and the top- and bottom-surface temperatures of the catalyst bed. Using these measured temperatures, a simplified model of the catalyst thermal profile and effective thermal reaction rates may be deduced for the illuminated catalysts. Ruthenium and rhodium photocatalysts with intrinsic plasmonic and catalytic properties for NH3 synthesis and CO2 hydrogenation were respectively used to illustrate this technique and examine thermal, photothermal, and nonthermal reaction rates. Through innovative experimental techniques, the thermal and nonthermal contributions may be systematically evaluated to understand underlying synergistic mechanisms in plasmonic photocatalysis and extract the nonthermal contribution from the total measured reaction rate.", "date": "2021-06-11", "date_type": "published", "publisher": "Wiley", "place_of_pub": "Weinheim", "pagerange": "191-230", "id_number": "CaltechAUTHORS:20210622-165124100", "isbn": "9783527347506", "book_title": "Plasmonic Catalysis: From Fundamentals to Applications", "official_url": "https://resolver.caltech.edu/CaltechAUTHORS:20210622-165124100", "rights": "No commercial reproduction, distribution, display or performance rights in this work are provided.", "local_group": { "items": [ { "id": "JCAP" } ] }, "contributors": { "items": [ { "id": "Camargo-Pedro-H-C", "name": { "family": "Camargo", "given": "Pedro H. C." } }, { "id": "Cort\u00e9s-Emiliano", "name": { "family": "Cort\u00e9s", "given": "Emiliano" } } ] }, "doi": "10.1002/9783527826971.ch7", "pub_year": "2021", "author_list": "Li, Xueqian; Liu, Jie; et el." }, { "id": "https://authors.library.caltech.edu/records/5h9we-pgc55", "eprint_id": 86903, "eprint_status": "archive", "datestamp": "2023-08-19 09:44:45", "lastmod": "2024-01-14 20:14:31", "type": "book_section", "metadata_visibility": "show", "creators": { "items": [ { "id": "Bai-Junwen", "name": { "family": "Bai", "given": "Junwen" } }, { "id": "Ament-S", "name": { "family": "Ament", "given": "Sebastian" } }, { "id": "Perez-G", "name": { "family": "Perez", "given": "Guillaume" } }, { "id": "Gregoire-J-M", "name": { "family": "Gregoire", "given": "John" }, "orcid": "0000-0002-2863-5265" }, { "id": "Gomes-C-P", "name": { "family": "Gomes", "given": "Carla" } } ] }, "title": "An Efficient Relaxed Projection Method for Constrained Non-negative Matrix Factorization with Application to the Phase-Mapping Problem in Materials Science", "ispublished": "unpub", "full_text_status": "restricted", "note": "\u00a9 2018 Springer International Publishing AG, part of Springer Nature. \n\nFirst Online: 08 June 2018. \n\nWork supported by an NSF Expedition award for Computational Sustainability (CCF-1522054), NSF Computing Research Infrastructure (CNS-1059284), NSF Inspire (1344201), a MURI/AFOSR grant (FA9550), and a grant from the Toyota Research Institute.", "abstract": "In recent years, a number of methods for solving the constrained non-negative matrix factorization problem have been proposed. In this paper, we propose an efficient method for tackling the ever increasing size of real-world problems. To this end, we propose a general relaxation and several algorithms for enforcing constraints in a challenging application: the phase-mapping problem in materials science. Using experimental data we show that the proposed method significantly outperforms previous methods in terms of \u2113_2-norm error and speed.", "date": "2018-06-08", "date_type": "published", "publisher": "Springer", "place_of_pub": "Cham, Switzerland", "pagerange": "52-62", "id_number": "CaltechAUTHORS:20180607-155251991", "isbn": "978-3-319-93030-5", "book_title": "Integration of Constraint Programming, Artificial Intelligence, and Operations Research", "official_url": "https://resolver.caltech.edu/CaltechAUTHORS:20180607-155251991", "rights": "No commercial reproduction, distribution, display or performance rights in this work are provided.", "funders": { "items": [ { "agency": "NSF", "grant_number": "CCF-1522054" }, { "agency": "NSF", "grant_number": "CNS-1059284" }, { "agency": "NSF", "grant_number": "CNS-1059284" }, { "agency": "NSF", "grant_number": "IIS-1344201" }, { "agency": "Air Force Office of Scientific Research (AFOSR)", "grant_number": "FA9550" }, { "agency": "Toyota Research Institute" } ] }, "local_group": { "items": [ { "id": "JCAP" } ] }, "contributors": { "items": [ { "id": "van-Hoeve-W-J", "name": { "family": "van Hoeve", "given": "Willem-Jan" } } ] }, "doi": "10.1007/978-3-319-93031-2_4", "pub_year": "2018", "author_list": "Bai, Junwen; Ament, Sebastian; et el." }, { "id": "https://authors.library.caltech.edu/records/3wec8-s0g29", "eprint_id": 89488, "eprint_status": "archive", "datestamp": "2023-08-19 07:03:42", "lastmod": "2024-01-14 20:56:47", "type": "book_section", "metadata_visibility": "show", "creators": { "items": [ { "id": "Xiang-Chengxiang", "name": { "family": "Xiang", "given": "Chengxiang" }, "orcid": "0000-0002-1698-6754" }, { "id": "Walczak-K-A", "name": { "family": "Walczak", "given": "Karl" } }, { "id": "Haber-J-A", "name": { "family": "Haber", "given": "Joel" }, "orcid": "0000-0001-7847-5506" }, { "id": "Jones-R-J-R", "name": { "family": "Jones", "given": "Ryan" }, "orcid": "0000-0002-4629-3115" }, { "id": "Beeman-J-W", "name": { "family": "Beeman", "given": "Jeffrey W." } }, { "id": "Guevarra-D-W", "name": { "family": "Guevarra", "given": "Dan" }, "orcid": "0000-0002-9592-3195" }, { "id": "Karp-C", "name": { "family": "Karp", "given": "Chris" } }, { "id": "Liu-Rui", "name": { "family": "Liu", "given": "Rui" } }, { "id": "Shaner-M-R", "name": { "family": "Shaner", "given": "Matthew" }, "orcid": "0000-0003-4682-9757" }, { "id": "Sun-Ke", "name": { "family": "Sun", "given": "Ke" }, "orcid": "0000-0001-8209-364X" }, { "id": "West-W-C", "name": { "family": "West", "given": "William" } }, { "id": "Zhou-Lan", "name": { "family": "Zhou", "given": "Lan" }, "orcid": "0000-0002-7052-266X" } ] }, "title": "Prototyping Development of Integrated Solar-driven Water-splitting Cells", "ispublished": "unpub", "full_text_status": "restricted", "note": "\u00a9 2019 The Royal Society of Chemistry.", "abstract": "Producing fuels directly from sunlight using cost effective, and earth-abundant materials, with scalable processes, offers a unique opportunity and design space for long-term, grid-scale energy storage. Efficient solar-fuel devices require synergistic assembly of light absorbers, electrocatalysts, membrane separators and electrolytes. This book chapter summaries key materials, components and device designs that are critical to advance this technology, as well as attempts on integration of materials and components at different length scales during the original phase of JCAP. Not only successful device demonstrations but also failed attempts and lessons learned during the research and development will be presented, including stability and compatibility of various epoxy materials in different electrolytes, experimental handling and integration of ion-exchange membranes, and failed attempts on light absorber materials and lessons learned on electrolyte conditions and constraints. The book chapter is organized as follows: first, the selections of materials and components that constitute efficient, stable, scalable and safe solar fuel devices will be discussed in detail. Then, full device design, characterization and benchmarking will be reviewed and discussed. At the end, a system engineering approach will be introduced and specific examples of hierarchical requirements relating to the solar-fuel devices will be given. Prototyping and benchmarking integrated solar-driven water-splitting devices play a critical role in evaluating newly discovered materials and components in the real world settings and provide technical readiness level for practical development and deployment. Significant efforts in developing standard protocols for benchmarking are still needed to advance photoelectrochemical hydrogen production.", "date": "2018", "date_type": "published", "publisher": "Royal Society of Chemistry", "place_of_pub": "Cambridge", "pagerange": "389-453", "id_number": "CaltechAUTHORS:20180910-111352528", "isbn": "978-1-78262-555-1", "book_title": "Integrated Solar Fuel Generators", "official_url": "https://resolver.caltech.edu/CaltechAUTHORS:20180910-111352528", "rights": "No commercial reproduction, distribution, display or performance rights in this work are provided.", "local_group": { "items": [ { "id": "JCAP" } ] }, "contributors": { "items": [ { "id": "Sharp-I-D", "name": { "family": "Sharp", "given": "Ian D." } }, { "id": "Atwater-H-A", "name": { "family": "Atwater", "given": "Harry A." } }, { "id": "Lewerenz-H-J", "name": { "family": "Lewerenz", "given": "Hans-Joachim" } } ] }, "doi": "10.1039/9781788010313-00387", "pub_year": "2018", "author_list": "Xiang, Chengxiang; Walczak, Karl; et el." }, { "id": "https://authors.library.caltech.edu/records/6p7zm-zh564", "eprint_id": 89487, "eprint_status": "archive", "datestamp": "2023-08-19 07:03:34", "lastmod": "2024-01-14 20:56:44", "type": "book_section", "metadata_visibility": "show", "creators": { "items": [ { "id": "Gregoire-J-M", "name": { "family": "Gregoire", "given": "John M." }, "orcid": "0000-0002-2863-5265" }, { "id": "Boyd-D-A", "name": { "family": "Boyd", "given": "David A." } }, { "id": "Guevarra-D-W", "name": { "family": "Guevarra", "given": "Dan" }, "orcid": "0000-0002-9592-3195" }, { "id": "Haber-J-A", "name": { "family": "Haber", "given": "Joel A." }, "orcid": "0000-0001-7847-5506" }, { "id": "Jones-R-J-R", "name": { "family": "Jones", "given": "Ryan" }, "orcid": "0000-0002-4629-3115" }, { "id": "Kan-Kevin", "name": { "family": "Kan", "given": "Kevin" } }, { "id": "Marcin-M-R", "name": { "family": "Marcin", "given": "Martin" } }, { "id": "Newhouse-P-F", "name": { "family": "Newhouse", "given": "Paul F." }, "orcid": "0000-0003-2032-3010" }, { "id": "Shinde-A", "name": { "family": "Shinde", "given": "Aniketa" }, "orcid": "0000-0003-2386-3848" }, { "id": "Soedarmadji-E", "name": { "family": "Soedarmadji", "given": "Edwin" } }, { "id": "Suram-S-K", "name": { "family": "Suram", "given": "Santosh K." }, "orcid": "0000-0001-8170-2685" }, { "id": "Zhou-Lan", "name": { "family": "Zhou", "given": "Lan" }, "orcid": "0000-0002-7052-266X" } ] }, "title": "High Throughput Experimentation for the Discovery of Water Splitting Materials", "ispublished": "unpub", "full_text_status": "restricted", "note": "\u00a9 2019 The Royal Society of Chemistry. \n\nWhile this chapter was authored by the present high throughput experimentation group, much of the work was made possible by contributions from previous group members. We thank Jian Jin for his initial leadership of the group and establishing many of the initial concepts and instrument designs; Slobodan Mitrovic for his commencement of the inkjet printing, optical spectroscopy, and materials characterization efforts; Earl Cornell for his commencement of data management and experiment automation; Lung-Sheng (Sean) Lin for his commencement of instrument engineering efforts; Xiaonao Liu for her contributions to the development of high speed printing; Chengxiang (CX) Xiang for his contributions to the (photo)electrochemical screening techniques; Meyer (Misha) Pesenson for his contributions to materials informatics and statistical analysis; Natalie Becerra-Stasiewicz for her contributions to materials characterization; and Nathan Lewis and Eric McFarland whose advice was critical in establishing the high throughput pipeline. \n\nWe also thank the many collaborators, in particular our theory collaborators Jeffrey Neaton, Kristin Persson, Guo Li, Jie Yu, and Qimin Yan; our materials characterization collaborators Junko Yano, Walter Drisdell, Marco Favaro, Sean Fackler, Ethan Crumlin, Apurva Mehta, Douglas van Campen, Fang Ren, and Christian Kisielowski; our materials integration collaborators Ian Sharp, Francesca Toma, and Guiji Liu; and our computer science and phase mapping collaborators Carla Gomes, Ronan LeBras, Stefano Ermon, Yexiang Xue, Junwen Bai, Brendan Rappazzo, Richard Bernstein, Johan Bjorck, and R. Bruce van Dover. \n\nThis material is based upon work performed by the Joint Center for Artificial Photosynthesis, a DOE Energy Innovation Hub, supported through the Office of Science of the US Department of Energy under Award Number DE-SC0004993. In addition to the financial support, we thank the DOE for their implementation of the hub approach to advancing energy technologies, which uniquely enabled the high throughput research described in this chapter.", "abstract": "High throughput experimentation is a powerful approach for accelerating materials discovery, particularly when embedded within a larger research effort providing clear guidance as to technologically relevant device operating conditions and in which discovered materials can be rapidly validated, further investigated, and incorporated into devices. In this chapter we provide an overview of high throughput pipelines developed to discover solar fuels materials, with particular attention given to electrocatalysts and photoelectrocatalysts for the oxygen evolution reaction. The description of the pipelines details our philosophy that experiment throughput must be contingent on establishing high data quality, which is embodied by our strategic choices of synthesis, screening, characterization, and data management techniques. This account of high throughput discovery of solar fuels materials provides a template for designing high throughput pipelines for mission-driven science research.", "date": "2018", "date_type": "published", "publisher": "Royal Society of Chemistry", "place_of_pub": "Cambridge", "pagerange": "307-340", "id_number": "CaltechAUTHORS:20180910-110703060", "isbn": "978-1-78262-555-1", "book_title": "Integrated Solar Fuel Generators", "official_url": "https://resolver.caltech.edu/CaltechAUTHORS:20180910-110703060", "rights": "No commercial reproduction, distribution, display or performance rights in this work are provided.", "funders": { "items": [ { "agency": "Department of Energy (DOE)", "grant_number": "DE-SC0004993" } ] }, "local_group": { "items": [ { "id": "JCAP" } ] }, "contributors": { "items": [ { "id": "Sharp-I-D", "name": { "family": "Sharp", "given": "Ian D." } }, { "id": "Atwater-H-A", "name": { "family": "Atwater", "given": "Harry A." } }, { "id": "Lewerenz-H-J", "name": { "family": "Lewerenz", "given": "Hans-Joachim" } } ] }, "doi": "10.1039/9781788010313-00305", "pub_year": "2018", "author_list": "Gregoire, John M.; Boyd, David A.; et el." }, { "id": "https://authors.library.caltech.edu/records/304m4-het72", "eprint_id": 89486, "eprint_status": "archive", "datestamp": "2023-08-19 07:03:26", "lastmod": "2024-01-14 20:56:42", "type": "book_section", "metadata_visibility": "show", "creators": { "items": [ { "id": "McCrory-C-C-L", "name": { "family": "McCrory", "given": "Charles C. L." }, "orcid": "0000-0001-9039-7192" }, { "id": "Jung-Suho", "name": { "family": "Jung", "given": "Suho" }, "orcid": "0000-0002-8119-3902" }, { "id": "Kallick-J", "name": { "family": "Kallick", "given": "Jeremy" } } ] }, "title": "Evaluating Electrocatalysts for Solar Water-splitting Reactions", "ispublished": "unpub", "full_text_status": "restricted", "note": "\u00a9 2019 The Royal Society of Chemistry.", "abstract": "Standardization in evaluating and reporting electrocatalytic performance for the oxygen evolution reaction and hydrogen evolution reaction is crucial to the development of new catalysts for solar-water splitting devices. The goal of the Benchmarking project at the Joint Center for Artificial Photosynthesis was to propose standard protocols for evaluating water-splitting catalysts that facilitate cross-comparison of catalytic activity and stability. In this chapter, we provide an overview of the evaluation and reporting methods developed by the Benchmarking project and summarize our studies evaluating solid-state, heterogeneous electrocatalysts for electrocatalytic water splitting. The chapter will specifically overview the choice of appropriate electrochemical apparatus and electrodes for conducting electrocatalytic studies, provide details regarding the use and limitations of the benchmarking protocols used in our studies to evaluate catalyst activity and stability, and summarize the general results of our investigations of catalyst performance.", "date": "2018", "date_type": "published", "publisher": "Royal Society of Chemistry", "place_of_pub": "Cambridge", "pagerange": "154-181", "id_number": "CaltechAUTHORS:20180910-110355357", "isbn": "978-1-78262-555-1", "book_title": "Integrated Solar Fuel Generators", "official_url": "https://resolver.caltech.edu/CaltechAUTHORS:20180910-110355357", "rights": "No commercial reproduction, distribution, display or performance rights in this work are provided.", "local_group": { "items": [ { "id": "JCAP" } ] }, "contributors": { "items": [ { "id": "Sharp-I-D", "name": { "family": "Sharp", "given": "Ian D." } }, { "id": "Atwater-H-A", "name": { "family": "Atwater", "given": "Harry A." } }, { "id": "Lewerenz-H-J", "name": { "family": "Lewerenz", "given": "Hans-Joachim" } } ] }, "doi": "10.1039/9781788010313-00154", "pub_year": "2018", "author_list": "McCrory, Charles C. L.; Jung, Suho; et el." }, { "id": "https://authors.library.caltech.edu/records/ga6v1-0be82", "eprint_id": 89485, "eprint_status": "archive", "datestamp": "2023-08-19 07:03:19", "lastmod": "2024-01-14 20:56:40", "type": "book_section", "metadata_visibility": "show", "creators": { "items": [ { "id": "Lewerenz-H-J", "name": { "family": "Lewerenz", "given": "Hans-Joachim" }, "orcid": "0000-0001-8433-9471" }, { "id": "Sharp-I-D", "name": { "family": "Sharp", "given": "Ian D." }, "orcid": "0000-0001-5238-7487" } ] }, "title": "Concepts of Photoelectrochemical Energy Conversion and Fuel Generation", "ispublished": "unpub", "full_text_status": "restricted", "note": "\u00a9 2019 The Royal Society of Chemistry.", "abstract": "This chapter provides an introduction to many of the key concepts that underlie electrochemical, photoelectrochemical, and photovoltaic energy conversion. The aim is to provide a scientific basis for understanding the in-depth chapters that follow in this book. Following a presentation of fundamental aspects of solid\u2013solid and solid\u2013liquid semiconductor junctions in the dark, an overview of the various ways that such junctions are utilized and arranged in integrated solar fuels generators is provided. Key differences between electrochemical processes at metal and semiconductor electrodes, the role of defects in charge transfer across semiconductor\u2013electrolyte interfaces, and the basic processes leading to photovoltage and photocurrent generation of illuminated interfaces are presented. The ongoing challenge of creating integrated solar fuel generators that are simultaneously efficient, stable, and scalable is discussed and the search for new materials that can address outstanding property gaps is highlighted.", "date": "2018", "date_type": "published", "publisher": "Royal Society of Chemistry", "place_of_pub": "Cambridge", "pagerange": "3-42", "id_number": "CaltechAUTHORS:20180910-105905620", "isbn": "978-1-78262-555-1", "book_title": "Integrated Solar Fuel Generators", "official_url": "https://resolver.caltech.edu/CaltechAUTHORS:20180910-105905620", "rights": "No commercial reproduction, distribution, display or performance rights in this work are provided.", "local_group": { "items": [ { "id": "JCAP" } ] }, "contributors": { "items": [ { "id": "Sharp-I-D", "name": { "family": "Sharp", "given": "Ian D." } }, { "id": "Atwater-H-A", "name": { "family": "Atwater", "given": "Harry A." } }, { "id": "Lewerenz-H-J", "name": { "family": "Lewerenz", "given": "Hans-Joachim" } } ] }, "doi": "10.1039/9781788010313-00001", "pub_year": "2018", "author_list": "Lewerenz, Hans-Joachim and Sharp, Ian D." }, { "id": "https://authors.library.caltech.edu/records/39469-e5x74", "eprint_id": 82172, "eprint_status": "archive", "datestamp": "2023-08-21 21:31:40", "lastmod": "2023-10-17 22:05:10", "type": "book_section", "metadata_visibility": "show", "creators": { "items": [ { "id": "Sokhoyan-R", "name": { "family": "Sokhoyan", "given": "Ruzan" }, "orcid": "0000-0003-4599-6350" }, { "id": "Kafaie-Shirmanesh-G", "name": { "family": "Kafaie Shirmanesh", "given": "Ghazaleh" }, "orcid": "0000-0003-1666-3215" }, { "id": "Lu-Yu-Jung", "name": { "family": "Lu", "given": "Yu-Jung" } }, { "id": "Thyagarajan-K", "name": { "family": "Thyagarajan", "given": "Krishnan" } }, { "id": "Pala-R-A", "name": { "family": "Pala", "given": "Ragip A." } }, { "id": "Atwater-H-A", "name": { "family": "Atwater", "given": "Harry A." }, "orcid": "0000-0001-9435-0201" } ] }, "title": "Tunable optical response and purcell enhancement of gated plasmonic structures", "ispublished": "unpub", "full_text_status": "restricted", "keywords": "tunable metasurface; Purcell enhancement; indium tin oxide (ITO); titanium nitride (TiN); ionic transport", "note": "\u00a9 2017 IEEE. \n\nThis work was supported by Samsung Electronics, the Air Force Office of Scientific Research (grant number: FA9550-16-1-0019) and the Department of Energy, Office of Science (grant number: DE-FG02-07ER46405). We acknowledge the use of facilities supported by KNI and JCAP at Caltech. Y-J Lu acknowledges the support from Ministry of Science and Technology, Taiwan (grant number: 104-2917-I-564-057). K.T. acknowledges the support from Swiss National Science Foundation (grant number 151853).", "abstract": "We experimentally demonstrate plasmonic nanostructures that enable dynamic electrical control of the phase and/or amplitude of the plane wave reflected from the nanostructures. We also demonstrate dynamically controlled Purcell enhancement of spontaneous emission of InP quantum dots (QDs) coupled to plasmonic heterostructures.", "date": "2017-08", "date_type": "published", "publisher": "IEEE", "place_of_pub": "Piscataway, NJ", "pagerange": "1-2", "id_number": "CaltechAUTHORS:20171006-133218360", "isbn": "978-1-5386-0735-0", "book_title": "2017 International Conference on Optical MEMS and Nanophotonics", "official_url": "https://resolver.caltech.edu/CaltechAUTHORS:20171006-133218360", "rights": "No commercial reproduction, distribution, display or performance rights in this work are provided.", "funders": { "items": [ { "agency": "Samsung Electronics" }, { "agency": "Air Force Office of Scientific Research (AFOSR)", "grant_number": "FA9550-16-1-0019" }, { "agency": "Department of Energy (DOE)", "grant_number": "DE-FG02-07ER46405" }, { "agency": "Ministry of Science and Technology (Taipei)", "grant_number": "104-2917-I-564-057" }, { "agency": "Swiss National Science Foundation (SNSF)", "grant_number": "151853" } ] }, "local_group": { "items": [ { "id": "Kavli-Nanoscience-Institute" }, { "id": "JCAP" } ] }, "doi": "10.1109/OMN.2017.8051450", "pub_year": "2017", "author_list": "Sokhoyan, Ruzan; Kafaie Shirmanesh, Ghazaleh; et el." }, { "id": "https://authors.library.caltech.edu/records/d1ejc-z1762", "eprint_id": 86738, "eprint_status": "archive", "datestamp": "2023-08-19 03:29:20", "lastmod": "2023-10-18 19:57:11", "type": "book_section", "metadata_visibility": "show", "creators": { "items": [ { "id": "Omelchenko-S-T", "name": { "family": "Omelchenko", "given": "Stefan T." }, "orcid": "0000-0003-1104-9291" }, { "id": "Tolstova-Y", "name": { "family": "Tolstova", "given": "Yulia" } }, { "id": "Atwater-H-A", "name": { "family": "Atwater", "given": "Harry A." }, "orcid": "0000-0001-9435-0201" }, { "id": "Lewis-N-S", "name": { "family": "Lewis", "given": "Nathan S." }, "orcid": "0000-0001-5245-0538" } ] }, "title": "Excitonic effects in photovoltaic materials with large exciton binding energies", "ispublished": "unpub", "full_text_status": "restricted", "note": "\u00a9 2017 IEEE.", "abstract": "We investigate the effect of excitons on charge transport in photovoltaic materials with large exciton binding energies using Cu_2O as a model system. We develop a thermodynamic model to estimate the fraction of excitons in Cu_2O at quasi-equilibrium and find that over 20% of the generated population of carriers during photovoltaic operation could be excitons. Experiments show the presence of excitons at room temperature under visible light excitation and current collection due to excitons during device operation. This work demonstrates that excitons can play a fundamental role in photovoltaic materials with large exciton binding energies and lays the foundation for further studies.", "date": "2017-06", "date_type": "published", "publisher": "IEEE", "place_of_pub": "Piscataway, NJ", "pagerange": "1-4", "id_number": "CaltechAUTHORS:20180601-090256322", "isbn": "978-1-5090-5605-7", "book_title": "2017 IEEE 44th Photovoltaic Specialist Conference (PVSC)", "official_url": "https://resolver.caltech.edu/CaltechAUTHORS:20180601-090256322", "rights": "No commercial reproduction, distribution, display or performance rights in this work are provided.", "local_group": { "items": [ { "id": "JCAP" } ] }, "doi": "10.1109/PVSC.2017.8366860", "pub_year": "2017", "author_list": "Omelchenko, Stefan T.; Tolstova, Yulia; et el." }, { "id": "https://authors.library.caltech.edu/records/g3erz-2jk31", "eprint_id": 90779, "eprint_status": "archive", "datestamp": "2023-08-19 03:30:41", "lastmod": "2023-10-19 14:52:12", "type": "book_section", "metadata_visibility": "show", "creators": { "items": [ { "id": "Espinet-Gonz\u00e1lez-P", "name": { "family": "Espinet-Gonz\u00e1lez", "given": "Pilar" }, "orcid": "0000-0002-7656-0077" }, { "id": "Vinogradova-T-G", "name": { "family": "Vinogradova", "given": "Tatiana" } }, { "id": "Kelzenberg-M-D", "name": { "family": "Kelzenberg", "given": "Michael D." }, "orcid": "0000-0002-6249-2827" }, { "id": "Messer-A-J", "name": { "family": "Messer", "given": "Alexander" } }, { "id": "Warmann-E-C", "name": { "family": "Warmann", "given": "Emily C." }, "orcid": "0000-0002-2810-4608" }, { "id": "Peterson-C", "name": { "family": "Peterson", "given": "Chris" } }, { "id": "Vaidya-N", "name": { "family": "Vaidya", "given": "Nina" } }, { "id": "Naqavi-A", "name": { "family": "Naqavi", "given": "Ali" } }, { "id": "Huang-Jing-Shun", "name": { "family": "Huang", "given": "Jing-Shun" }, "orcid": "0000-0002-7531-4691" }, { "id": "Loke-S-P", "name": { "family": "Loke", "given": "Samuel P." } }, { "id": "Walker-D", "name": { "family": "Walker", "given": "Don" } }, { "id": "Mann-C-J", "name": { "family": "Mann", "given": "Colin J." } }, { "id": "Pellegrino-S", "name": { "family": "Pellegrino", "given": "Sergio" }, "orcid": "0000-0001-9373-3278" }, { "id": "Atwater-H-A", "name": { "family": "Atwater", "given": "Harry A." }, "orcid": "0000-0001-9435-0201" } ] }, "title": "Impact of Space Radiation Environment on Concentrator Photovoltaic Systems", "ispublished": "unpub", "full_text_status": "restricted", "keywords": "Concentrator photovoltaic systems, concentrator solar cells, space radiation modeling, radiation tests, space solar power, shielding", "note": "\u00a9 2017 IEEE. \n\nWe acknowledge financial support from Northrop Grumman. This effort made use of facilities provided by the Kavli Nanoscience Institute, the Material Molecular Research Center (MMRC), the Resnick Institute, and the Joint Center for Artificial Photosynthesis, at Caltech.", "abstract": "Concentrator photovoltaic systems can provide supplementary shielding against high energy particles. In this paper we compare the radiation environment that the same solar cell would experience in a flat-plate module versus in a parabolic mirror concentrator system. We have observed that the shielding provided by the concentrator system is remarkable. In order to obtain an accurate prediction of the overall shield needed in our concentrator system triple-junction space solar cells have been irradiated on the edge with 350-keV protons at a fluence of 10^(12) p^+cm^(-2). A mild degradation of the open circuit voltage was measured (~70 mV).", "date": "2017-06", "date_type": "published", "publisher": "IEEE", "place_of_pub": "Piscataway, NJ", "pagerange": "512-516", "id_number": "CaltechAUTHORS:20181109-074226646", "isbn": "978-1-5090-5605-7", "book_title": "2017 IEEE 44th Photovoltaic Specialist Conference (PVSC)", "official_url": "https://resolver.caltech.edu/CaltechAUTHORS:20181109-074226646", "rights": "No commercial reproduction, distribution, display or performance rights in this work are provided.", "funders": { "items": [ { "agency": "Northrop Grumman Corporation" } ] }, "collection": "CaltechAUTHORS", "local_group": { "items": [ { "id": "Kavli-Nanoscience-Institute", "value": "Kavli Nanoscience Institute" }, { "id": "Resnick-Sustainability-Institute", "value": "Resnick Sustainability Institute" }, { "id": "JCAP", "value": "JCAP" }, { "id": "Space-Solar-Power-Project", "value": "Space Solar Power Project" } ] }, "doi": "10.1109/PVSC.2017.8366020", "pub_year": "2017", "author_list": "Espinet-Gonz\u00e1lez, Pilar; Vinogradova, Tatiana; et el." }, { "id": "https://authors.library.caltech.edu/records/0xnyf-zv194", "eprint_id": 90780, "eprint_status": "archive", "datestamp": "2023-08-19 03:30:51", "lastmod": "2023-10-19 14:52:18", "type": "book_section", "metadata_visibility": "show", "creators": { "items": [ { "id": "Vaidya-N", "name": { "family": "Vaidya", "given": "Nina" } }, { "id": "Kelzenberg-M-D", "name": { "family": "Kelzenberg", "given": "Michael D." }, "orcid": "0000-0002-6249-2827" }, { "id": "Espinet-Gonz\u00e1lez-P", "name": { "family": "Espinet-Gonz\u00e1lez", "given": "Pilar" }, "orcid": "0000-0002-7656-0077" }, { "id": "Vinogradova-T-G", "name": { "family": "Vinogradova", "given": "Tatiana G." } }, { "id": "Huang-Jing-Shun", "name": { "family": "Huang", "given": "Jing-Shun" }, "orcid": "0000-0002-7531-4691" }, { "id": "Leclerc-C", "name": { "family": "Leclerc", "given": "Christophe" } }, { "id": "Naqavi-A", "name": { "family": "Naqavi", "given": "Ali" } }, { "id": "Warmann-E-C", "name": { "family": "Warmann", "given": "Emily C." }, "orcid": "0000-0002-2810-4608" }, { "id": "Pellegrino-S", "name": { "family": "Pellegrino", "given": "Sergio" }, "orcid": "0000-0001-9373-3278" }, { "id": "Atwater-H-A", "name": { "family": "Atwater", "given": "Harry A." }, "orcid": "0000-0001-9435-0201" } ] }, "title": "Lightweight Carbon Fiber Mirrors for Solar Concentrator Applications", "ispublished": "unpub", "full_text_status": "public", "keywords": "mirrors, solar energy, optical device fabrication, polymers, ray tracing, space solar, optical design", "note": "\u00a9 2017 IEEE. \n\nWe acknowledge funding from Northrop Grumman Corporation. This effort made use of facilities provided by the Kavli Nanoscience Institute, the Molecular Materials Research Center, the Resnick Institute, and the Joint Center for Artificial Photosynthesis at Caltech. We acknowledge the helpful contributions of Mark Kruer, Mike Levesque, and Erik Kurman at Northrop Grumman.\n\n
Submitted - 1810.09529.pdf
", "abstract": "Lightweight parabolic mirrors for solar concentrators have been fabricated using carbon fiber reinforced polymer (CFRP) and a nanometer scale optical surface smoothing technique. The smoothing technique improved the surface roughness of the CFRP surface from ~3 \u03bcm root mean square (RMS) for as-cast to ~5 nm RMS after smoothing. The surfaces were then coated with metal, which retained the sub-wavelength surface roughness, to produce a high-quality specular reflector. The mirrors were tested in an 11x geometrical concentrator configuration and achieved an optical efficiency of 78% under an AM0 solar simulator. With further development, lightweight CFRP mirrors will enable dramatic improvements in the specific power, power per unit mass, achievable for concentrated photovoltaics in space.", "date": "2017-06", "date_type": "published", "publisher": "IEEE", "place_of_pub": "Piscataway, NJ", "pagerange": "572-577", "id_number": "CaltechAUTHORS:20181109-075349019", "isbn": "978-1-5090-5605-7", "book_title": "2017 IEEE 44th Photovoltaic Specialist Conference (PVSC)", "official_url": "https://resolver.caltech.edu/CaltechAUTHORS:20181109-075349019", "rights": "No commercial reproduction, distribution, display or performance rights in this work are provided.", "funders": { "items": [ { "agency": "Northrop Grumman Corporation" } ] }, "local_group": { "items": [ { "id": "Kavli-Nanoscience-Institute" }, { "id": "Resnick-Sustainability-Institute" }, { "id": "JCAP" }, { "id": "Space-Solar-Power-Project" } ] }, "doi": "10.48550/arXiv.1810.09529", "primary_object": { "basename": "1810.09529.pdf", "url": "https://authors.library.caltech.edu/records/0xnyf-zv194/files/1810.09529.pdf" }, "pub_year": "2017", "author_list": "Vaidya, Nina; Kelzenberg, Michael D.; et el." }, { "id": "https://authors.library.caltech.edu/records/hd7br-x6z92", "eprint_id": 90772, "eprint_status": "archive", "datestamp": "2023-08-19 03:30:33", "lastmod": "2023-10-19 14:51:33", "type": "book_section", "metadata_visibility": "show", "creators": { "items": [ { "id": "Kelzenberg-M-D", "name": { "family": "Kelzenberg", "given": "Michael D." }, "orcid": "0000-0002-6249-2827" }, { "id": "Espinet-Gonz\u00e1lez-P", "name": { "family": "Espinet-Gonz\u00e1lez", "given": "Pilar" }, "orcid": "0000-0002-7656-0077" }, { "id": "Vaidya-N", "name": { "family": "Vaidya", "given": "Nina" } }, { "id": "Roy-T-A", "name": { "family": "Roy", "given": "Tatiana A." } }, { "id": "Warmann-E-C", "name": { "family": "Warmann", "given": "Emily C." }, "orcid": "0000-0002-2810-4608" }, { "id": "Naqavi-A", "name": { "family": "Naqavi", "given": "Ali" } }, { "id": "Loke-S-P", "name": { "family": "Loke", "given": "Samuel P." } }, { "id": "Huang-Jing-Shun", "name": { "family": "Huang", "given": "Jing-Shun" }, "orcid": "0000-0002-7531-4691" }, { "id": "Vinogradova-T-G", "name": { "family": "Vinogradova", "given": "Tatiana G." } }, { "id": "Messer-A-J", "name": { "family": "Messer", "given": "Alexander J." } }, { "id": "Leclerc-C", "name": { "family": "Leclerc", "given": "Christophe" } }, { "id": "Gdoutos-E-E", "name": { "family": "Gdoutos", "given": "Eleftherios E." } }, { "id": "Royer-F", "name": { "family": "Royer", "given": "Fabien" } }, { "id": "Hajimiri-A", "name": { "family": "Hajimiri", "given": "Ali" }, "orcid": "0000-0001-6736-8019" }, { "id": "Pellegrino-S", "name": { "family": "Pellegrino", "given": "Sergio" }, "orcid": "0000-0001-9373-3278" }, { "id": "Atwater-H-A", "name": { "family": "Atwater", "given": "Harry A." }, "orcid": "0000-0001-9435-0201" } ] }, "title": "Design and Prototyping Efforts for the Space Solar Power Initiative", "ispublished": "unpub", "full_text_status": "restricted", "keywords": "space solar power, concentrator photovoltaics, thermal management", "note": "\u00a9 2017 IEEE. \n\nWe acknowledge financial support from Northrop Grumman. This effort made use of facilities provided by the Kavli Nanoscience Institute, the Molecular Materials Research Center, the Resnick Institute, and the Joint Center for Artificial Photosynthesis at Caltech. We acknowledge the helpful contributions of Mark Kruer, Mike Levesque, and Erik Kurman at Northrop Grumman; Lynn Rodman at Nexolve; and Allen Smith at ABET.", "abstract": "The Space Solar Power Initiative (SSPI) seeks to enable reliable, cost-effective baseload power generation from large-scale solar power stations in space. We propose an ultralight, modular power station, having specific power in the range of 1\u201310 kW/kg for the photovoltaic (PV) collection subsystem. The building block of the power station is the 'tile,' a self-contained element that performs PV energy collection, conversion to radio frequency (RF), and transmission to earth. To minimize PV mass, we select a 1D, 10\u201320X parabolic trough concentrator geometry, which provides cooling and radiation shielding for the cells, and which folds flat for deployment. Here, we discuss the design, fabrication, and testing of the initial PV tile prototypes.", "date": "2017-06", "date_type": "published", "publisher": "IEEE", "place_of_pub": "Piscataway, NJ", "pagerange": "558-561", "id_number": "CaltechAUTHORS:20181108-154443049", "isbn": "978-1-5090-5605-7", "book_title": "2017 IEEE 44th Photovoltaic Specialist Conference (PVSC)", "official_url": "https://resolver.caltech.edu/CaltechAUTHORS:20181108-154443049", "rights": "No commercial reproduction, distribution, display or performance rights in this work are provided.", "funders": { "items": [ { "agency": "Northrop Grumman Corporation" } ] }, "local_group": { "items": [ { "id": "Kavli-Nanoscience-Institute" }, { "id": "Resnick-Sustainability-Institute" }, { "id": "JCAP" }, { "id": "Space-Solar-Power-Project" } ] }, "doi": "10.1109/PVSC.2017.8366621", "pub_year": "2017", "author_list": "Kelzenberg, Michael D.; Espinet-Gonz\u00e1lez, Pilar; et el." }, { "id": "https://authors.library.caltech.edu/records/1zypa-kz644", "eprint_id": 78951, "eprint_status": "archive", "datestamp": "2023-08-21 21:07:13", "lastmod": "2024-01-13 20:32:21", "type": "book_section", "metadata_visibility": "show", "creators": { "items": [ { "id": "Bai-Junwen", "name": { "family": "Bai", "given": "Junwen" } }, { "id": "Bjorck-J", "name": { "family": "Bjorck", "given": "Johan" } }, { "id": "Xue-Yexiang", "name": { "family": "Xue", "given": "Yexiang" } }, { "id": "Suram-S-K", "name": { "family": "Suram", "given": "Santosh K." }, "orcid": "0000-0001-8170-2685" }, { "id": "Gregoire-J-M", "name": { "family": "Gregoire", "given": "John" }, "orcid": "0000-0002-2863-5265" }, { "id": "Gomes-C-P", "name": { "family": "Gomes", "given": "Carla" } } ] }, "title": "Relaxation Methods for Constrained Matrix Factorization Problems: Solving the Phase Mapping Problem in Materials Discovery", "ispublished": "unpub", "full_text_status": "public", "keywords": "Constrained matrix factorization; Relaxation methods; Multiplicative updates; Phase-mapping", "note": "\u00a9 2017 Springer International Publishing AG. \n\nFirst Online: 31 May 2017.", "abstract": "Matrix factorization is a robust and widely adopted technique in data science, in which a given matrix is decomposed as the product of low rank matrices. We study a challenging constrained matrix factorization problem in materials discovery, the so-called phase mapping problem. We introduce a novel \"lazy\" Iterative Agile Factor Decomposition (IAFD) approach that relaxes and postpones non-convex constraint sets (the lazy constraints), iteratively enforcing them when violations are detected. IAFD interleaves multiplicative gradient-based updates with efficient modular algorithms that detect and repair constraint violations, while still ensuring fast run times. Experimental results show that IAFD is several orders of magnitude faster and its solutions are also in general considerably better than previous approaches. IAFD solves a key problem in materials discovery while also paving the way towards tackling constrained matrix factorization problems in general, with broader implications for data science.", "date": "2017-05-31", "date_type": "published", "publisher": "Springer", "place_of_pub": "Cham, Switzerland", "pagerange": "104-112", "id_number": "CaltechAUTHORS:20170711-130810289", "isbn": "978-3-319-59775-1", "book_title": "Integration of AI and OR Techniques in Constraint Programming", "official_url": "https://resolver.caltech.edu/CaltechAUTHORS:20170711-130810289", "rights": "No commercial reproduction, distribution, display or performance rights in this work are provided.", "local_group": { "items": [ { "id": "JCAP" } ] }, "contributors": { "items": [ { "id": "Salvagnin-D", "name": { "family": "Salvagnin", "given": "Domenico" } }, { "id": "Lombardi-M", "name": { "family": "Lombardi", "given": "Michele" } } ] }, "doi": "10.1007/978-3-319-59776-8_9", "pub_year": "2017", "author_list": "Bai, Junwen; Bjorck, Johan; et el." }, { "id": "https://authors.library.caltech.edu/records/n334z-epn96", "eprint_id": 71514, "eprint_status": "archive", "datestamp": "2023-08-20 13:31:51", "lastmod": "2024-01-13 18:34:16", "type": "book_section", "metadata_visibility": "show", "creators": { "items": [ { "id": "Lewis-N-S", "name": { "family": "Lewis", "given": "Nathan S." }, "orcid": "0000-0001-5245-0538" } ] }, "title": "Progress Towards a Synergistically Integrated, Scalable Solar Fuels Generator", "ispublished": "unpub", "full_text_status": "restricted", "note": "\u00a9 2016 American Chemical Society. \n\nPublication Date (Web): August 29, 2016. \n\nWe gratefully acknowledge support from the National Science Foundation, the Department of Energy Basic Energy Sciences, the Air Force Office of Scientific Research, the Department of Energy through the Joint Center for Artificial Photosynthesis, and the Gordon and Betty Moore Foundation, as acknowledged in the individual publications referenced herein, as well as for partial salary support for NSL that enabled the preparation of this manuscript. We also gratefully acknowledge the talented students and postdoctoral fellows who have made significant contributions to this work, especially including those listed as authors on the publications from our research group and referenced herein. Dr. Kimberly Papadantonakis is also acknowledged for assistance in preparation of this manuscript.", "abstract": "The development of an artificial photosynthetic system involves obtaining desired functionalities on the nanoscale. A viable blueprint for an artificial photosynthetic system involves two complementary, current-matched and voltage-adding photosystems, in conjunction with two different catalysts: one to oxidize water, and the other to reduce either water and/or carbon dioxide to solar fuels. Recent progress towards a robust, efficient, inexpensive and safe solar-fuels generator provides an example of nanoscale materials-by-design. The light-absorbing semiconductors have been designed and grown as high-aspect-ratio microwires which simultaneously allow minimization of ionic transport pathways, sufficient depth for light absorption in the semiconductor, efficient collection of charge carriers, and high surface areas for catalyst loading. Non-noble-metal catalysts for the redox reactions have been discovered, and methods for protecting the semiconductors against corrosion have been developed.", "date": "2016-08-29", "date_type": "published", "publisher": "American Chemical Society", "place_of_pub": "Washington, DC", "pagerange": "3-22", "id_number": "CaltechAUTHORS:20161026-151926632", "isbn": "9780841231467", "book_title": "Nanotechnology: Delivering on the Promise", "official_url": "https://resolver.caltech.edu/CaltechAUTHORS:20161026-151926632", "rights": "No commercial reproduction, distribution, display or performance rights in this work are provided.", "funders": { "items": [ { "agency": "NSF" }, { "agency": "Department of Energy (DOE)" }, { "agency": "Air Force Office of Scientific Research (AFOSR)" }, { "agency": "Joint Center for Artificial Photosynthesis (JCAP)" }, { "agency": "Gordon and Betty Moore Foundation" } ] }, "local_group": { "items": [ { "id": "JCAP" } ] }, "contributors": { "items": [ { "id": "Cheng-H-N", "name": { "family": "Cheng", "given": "H. N." } } ] }, "doi": "10.1021/bk-2016-1224.ch001", "pub_year": "2016", "author_list": "Lewis, Nathan S." }, { "id": "https://authors.library.caltech.edu/records/mv8e7-gzx73", "eprint_id": 93642, "eprint_status": "archive", "datestamp": "2023-08-20 11:58:56", "lastmod": "2023-10-20 17:18:36", "type": "book_section", "metadata_visibility": "show", "creators": { "items": [ { "id": "Saive-R", "name": { "family": "Saive", "given": "Rebecca" }, "orcid": "0000-0001-7420-9155" }, { "id": "Bukowsky-C-R", "name": { "family": "Bukowsky", "given": "Colton R." }, "orcid": "0000-0003-3577-8050" }, { "id": "Yalamanchili-S", "name": { "family": "Yalamanchili", "given": "Sisir" } }, { "id": "Boccard-M", "name": { "family": "Boccard", "given": "Mathieu" } }, { "id": "Saenz-T", "name": { "family": "Saenz", "given": "Theresa" } }, { "id": "Borsuk-A-M", "name": { "family": "Borsuk", "given": "Aleca M." } }, { "id": "Holman-Z-C", "name": { "family": "Holman", "given": "Zachary" } }, { "id": "Atwater-H-A", "name": { "family": "Atwater", "given": "Harry A." }, "orcid": "0000-0001-9435-0201" } ] }, "title": "Effectively transparent contacts (ETCs) for solar cells", "ispublished": "unpub", "full_text_status": "restricted", "keywords": "Effectively Transparent Contacts, Silicon\nHeterojunction Solar Cells, Three-Dimensional Printing", "note": "\u00a9 2016 IEEE. \n\nThis material was based upon work supported by the U.S. Department of Energy through the Bay Area Photovoltaic Consortium under Award Number DE-EE0004946 and by the Engineering Research Center Program of the National Science Foundation and the Office of Energy Efficiency and Renewable Energy of the Department of Energy under NSF Cooperative Agreement No. EEC-1041895. Authors and their work presented herein are funded in part by the Department of Energy, Energy Efficiency and Renewable Energy Program, under Award Number DE-EE0006335. Any opinions, findings and conclusions or recommendations expressed in this material are those of the authors and do not necessarily reflect those of the National Science Foundation or Department of Energy. S.Y. acknowledges the Kavli Nanoscience Institute and the Joint Center for Artificial Photosynthesis.", "abstract": "We have developed effectively transparent contacts (ETCs) that allow for increased current in heterojunction solar cells. Micro-meter scaled triangular cross-section grid fingers with micro-meter scaled distance redirect light efficiently to the active area of the solar cell and hence, omit losses through reflection at the front finger grid. Furthermore, the grid fingers are placed close together such that only a very thin layer of transparent conductive oxides (TCO) is necessary which avoids parasitic absorption and can decrease material costs. In this paper we experimentally show current enhancement of ~2 mA/cm^2 in silicon heterojunction solar cells using ETCs. 1 mA/cm^2 is gained through less parasitic absorption and 1 mA/cm^2 is gained by efficient redirection of light and therefore, absent shadowing losses.", "date": "2016-06", "date_type": "published", "publisher": "IEEE", "place_of_pub": "Piscataway, NJ", "pagerange": "3612-3615", "id_number": "CaltechAUTHORS:20190308-082250884", "isbn": "9781509027248", "book_title": "2016 IEEE 43rd Photovoltaic Specialists Conference (PVSC)", "official_url": "https://resolver.caltech.edu/CaltechAUTHORS:20190308-082250884", "rights": "No commercial reproduction, distribution, display or performance rights in this work are provided.", "funders": { "items": [ { "agency": "Department of Energy (DOE)", "grant_number": "DE-EE0004946" }, { "agency": "NSF", "grant_number": "EEC-1041895" }, { "agency": "Department of Energy (DOE)", "grant_number": "DE-EE0006335" }, { "agency": "Kavli Nanoscience Institute" }, { "agency": "Joint Center for Artificial Photosynthesis (JCAP)" } ] }, "local_group": { "items": [ { "id": "JCAP" }, { "id": "Kavli-Nanoscience-Institute" } ] }, "doi": "10.1109/pvsc.2016.7750346", "pub_year": "2016", "author_list": "Saive, Rebecca; Bukowsky, Colton R.; et el." }, { "id": "https://authors.library.caltech.edu/records/tpz9v-q1t46", "eprint_id": 72342, "eprint_status": "archive", "datestamp": "2023-08-20 11:55:01", "lastmod": "2023-10-23 21:39:13", "type": "book_section", "metadata_visibility": "show", "creators": { "items": [ { "id": "Omelchenko-S-T", "name": { "family": "Omelchenko", "given": "Stefan T." }, "orcid": "0000-0003-1104-9291" }, { "id": "Tolstova-Y", "name": { "family": "Tolstova", "given": "Yulia" } }, { "id": "Atwater-H-A", "name": { "family": "Atwater", "given": "Harry A." }, "orcid": "0000-0001-9435-0201" }, { "id": "Lewis-N-S", "name": { "family": "Lewis", "given": "Nathan S." }, "orcid": "0000-0001-5245-0538" } ] }, "title": "Excitonic effects in photovoltaic materials with large exciton binding energies", "ispublished": "unpub", "full_text_status": "restricted", "keywords": "Excitons, Photovoltaic systems, Photoluminescence, Photonic band gap, Photovoltaic cells", "note": "\u00a9 2016 IEEE.", "abstract": "We investigate the effect of excitons on charge transport in photovoltaic materials with large exciton binding energies using Cu_2O as a model system. We develop a thermodynamic model to estimate the fraction of excitons in Cu_2O at quasi-equilibrium and find that over 20% of the generated population of carriers during photovoltaic operation could be excitons. Experiments show the presence of excitons at room temperature under visible light excitation and current collection due to excitons during device operation. This work demonstrates that excitons can play a fundamental role in photovoltaic materials with large exciton binding energies and lays the foundation for further studies.", "date": "2016-06", "date_type": "published", "publisher": "IEEE", "place_of_pub": "Piscataway, NJ", "pagerange": "3616-3619", "id_number": "CaltechAUTHORS:20161128-152532394", "isbn": "978-1-5090-2724-8", "book_title": "IEEE 43rd Photovoltaic Specialists Conference", "official_url": "https://resolver.caltech.edu/CaltechAUTHORS:20161128-152532394", "rights": "No commercial reproduction, distribution, display or performance rights in this work are provided.", "local_group": { "items": [ { "id": "JCAP" } ] }, "doi": "10.1109/PVSC.2016.7750347", "pub_year": "2016", "author_list": "Omelchenko, Stefan T.; Tolstova, Yulia; et el." }, { "id": "https://authors.library.caltech.edu/records/9nwsz-4tt75", "eprint_id": 79151, "eprint_status": "archive", "datestamp": "2023-08-20 09:29:07", "lastmod": "2024-01-13 20:35:46", "type": "book_section", "metadata_visibility": "show", "creators": { "items": [ { "id": "Suram-S-K", "name": { "family": "Suram", "given": "Santosh K." }, "orcid": "0000-0001-8170-2685" }, { "id": "Pesenson-M-Z", "name": { "family": "Pesenson", "given": "Meyer Z." } }, { "id": "Gregoire-J-M", "name": { "family": "Gregoire", "given": "John M." }, "orcid": "0000-0002-2863-5265" } ] }, "title": "High Throughput Combinatorial Experimentation + Informatics = Combinatorial Science", "ispublished": "unpub", "full_text_status": "restricted", "note": "\u00a9 2016 Springer International Publishing Switzerland. \n\nFirst Online: 13 December 2015. \n\nThe authors would like to thank Prof. Alfred Ludwig for stimulating discussions. This work is performed by the Joint Center for Artificial Photosynthesis, a DOE Energy Innovation Hub, supported through the Office of Science of the U.S. Department of Energy under Award Number DE-SC000499.", "abstract": "Many present, emerging and future technologies rely upon the development high performance functional materials. For a given application, the performance of materials containing 1 or 2 elements from the periodic table have been evaluated using traditional techniques, and additional materials complexity is required to continue the development of advanced materials, for example through the incorporation of several elements into a single material. The combinatorial aspect of combining several elements yields vast composition spaces that can be effectively explored with high throughput techniques. State of the art high throughput experiments produce data which are multivariate, high-dimensional, and consist of wide ranges of spatial and temporal scales. We present an example of such data in the area of water splitting electrocatalysis and describe recent progress on 2 areas of interpreting such vast, complex datasets. We discuss a genetic programming technique for automated identification of composition-property trends, which is important for understanding the data and crucial in identifying representative compositions for further investigation. By incorporating such an algorithm in a high throughput experimental pipeline, the automated down-selection of samples can empower a highly efficient tiered screening platform. We also discuss some fundamental mathematics of composition spaces, where compositional variables are non-Euclidean due to the constant-sum constraint. We describe the native simplex space spanned by composition variables and provide illustrative examples of statistics and interpolation within this space. Through further development of machine learning algorithms and their prudent implementation in the simplex space, the data informatics community will establish methods that derive the most knowledge from high throughput materials science data.", "date": "2015-12-13", "date_type": "published", "publisher": "Springer", "place_of_pub": "Cham, Switzerland", "pagerange": "271-300", "id_number": "CaltechAUTHORS:20170718-103549107", "isbn": "978-3-319-23870-8", "book_title": "Information Science for Materials Discovery and Design", "official_url": "https://resolver.caltech.edu/CaltechAUTHORS:20170718-103549107", "rights": "No commercial reproduction, distribution, display or performance rights in this work are provided.", "funders": { "items": [ { "agency": "Department of Energy (DOE)", "grant_number": "DE-SC000499" } ] }, "local_group": { "items": [ { "id": "JCAP" } ] }, "contributors": { "items": [ { "id": "Lookman-T", "name": { "family": "Lookman", "given": "Turab" } }, { "id": "Alexander-F-J", "name": { "family": "Alexander", "given": "Francis J." } }, { "id": "Rajan-K", "name": { "family": "Rajan", "given": "Krishna" } } ] }, "doi": "10.1007/978-3-319-23871-5_14", "pub_year": "2015", "author_list": "Suram, Santosh K.; Pesenson, Meyer Z.; et el." }, { "id": "https://authors.library.caltech.edu/records/w2gsq-3yq23", "eprint_id": 63207, "eprint_status": "archive", "datestamp": "2023-09-15 05:14:33", "lastmod": "2023-10-23 21:15:19", "type": "book_section", "metadata_visibility": "show", "creators": { "items": [ { "id": "Omelchenko-S-T", "name": { "family": "Omelchenko", "given": "Stefan T." }, "orcid": "0000-0003-1104-9291" }, { "id": "Tolstova-Y", "name": { "family": "Tolstova", "given": "Yulia" } }, { "id": "Wilson-S-S", "name": { "family": "Wilson", "given": "Samantha S." } }, { "id": "Atwater-H-A", "name": { "family": "Atwater", "given": "Harry A." }, "orcid": "0000-0001-9435-0201" }, { "id": "Lewis-N-S", "name": { "family": "Lewis", "given": "Nathan S." }, "orcid": "0000-0001-5245-0538" } ] }, "title": "Single crystal Cu_2O photovoltaics by the floating zone method", "ispublished": "unpub", "full_text_status": "restricted", "keywords": "Cuprous oxide, floating zone, single crystal, earth abundant photovoltaic", "note": "\u00a9 2015 IEEE. \n\nThis material is based upon work performed by the Joint Center for Artificial Photosynthesis, a DOE Energy Innovation Hub, supported through the Office of Science of the U.S. Department of Energy under Award Number DESC0004993.", "abstract": "Cu_2O is a p-type semiconductor with desirable bulk properties for photovoltaics. However, the lack of an n-type dopant and surface instability have hindered the development of a high efficiency Cu_2O device. In this work, the floating zone method is used to grow high quality single crystals of Cu_2O in order to controllably study the interfacial reactions between Cu_2O and its heterojunction partners. While inclusions of CuO are inherent to the floating zone growth process we show that they can be removed by post-annealing with phase purity and crystallinity shown by x-ray diffraction. We discuss the role of CuO inclusions on the electronic properties of single crystal Cu_2O wafers using Hall measurements. Changes in the resistivity and mobility due to post-annealing are correlated to changing defect densities obtained from steady-state photoluminescence. The optimization of the Cu_2O wafers provides a pathway towards the first float zone single crystal Cu_2O photovoltaic device.", "date": "2015-06", "date_type": "published", "publisher": "IEEE", "id_number": "CaltechAUTHORS:20151224-073038812", "official_url": "https://resolver.caltech.edu/CaltechAUTHORS:20151224-073038812", "rights": "No commercial reproduction, distribution, display or performance rights in this work are provided.", "funders": { "items": [ { "agency": "Department of Energy (DOE)", "grant_number": "DE-SC0004993" } ] }, "local_group": { "items": [ { "id": "JCAP" } ] }, "doi": "10.1109/PVSC.2015.7355920", "pub_year": "2015", "author_list": "Omelchenko, Stefan T.; Tolstova, Yulia; et el." }, { "id": "https://authors.library.caltech.edu/records/08vym-exy07", "eprint_id": 63186, "eprint_status": "archive", "datestamp": "2023-09-15 05:14:15", "lastmod": "2023-10-23 21:15:14", "type": "book_section", "metadata_visibility": "show", "creators": { "items": [ { "id": "Tolstova-Y", "name": { "family": "Tolstova", "given": "Yulia" } }, { "id": "Wilson-S-S", "name": { "family": "Wilson", "given": "Samantha S." } }, { "id": "Omelchenko-S-T", "name": { "family": "Omelchenko", "given": "Stefan T." }, "orcid": "0000-0003-1104-9291" }, { "id": "Lewis-N-S", "name": { "family": "Lewis", "given": "Nathan S." }, "orcid": "0000-0001-5245-0538" }, { "id": "Atwater-H-A", "name": { "family": "Atwater", "given": "Harry A." }, "orcid": "0000-0001-9435-0201" } ] }, "title": "Molecular Beam Epitaxy of Cu_2O Heterostructures for Photovoltaics", "ispublished": "unpub", "full_text_status": "restricted", "keywords": "Cuprous oxide, molecular beam epitaxy, heteroepitaxy, photovoltaic", "note": "\u00a9 2015 IEEE. \n\nThe authors gratefully acknowledge support from the Dow Chemical Company under the earth abundant semiconductor project.", "abstract": "Cu_2O is a p-type semiconductor that has demonstrated attractive photovoltaic properties, but its efficiencies have been limited by surface instability and lack of high quality thin films. In this work, plasma-assisted molecular beam epitaxy is used to precisely control film orientation and interface chemistry of Cu_2O heterostructures. Thin films of Cu_2O are deposited by MBE onto thin films of Pt and Au sputtered on MgO single crystal substrates. This heterostructure configuration provides a path for an all-epitaxial thin film Cu_2O solar cell, which can serve as a top cell in a tandem structure with a crystalline Si bottom cell.", "date": "2015-06", "date_type": "published", "publisher": "IEEE", "id_number": "CaltechAUTHORS:20151223-114554576", "official_url": "https://resolver.caltech.edu/CaltechAUTHORS:20151223-114554576", "rights": "No commercial reproduction, distribution, display or performance rights in this work are provided.", "funders": { "items": [ { "agency": "Dow Chemical Company" } ] }, "local_group": { "items": [ { "id": "JCAP" } ] }, "doi": "10.1109/PVSC.2015.7355913", "pub_year": "2015", "author_list": "Tolstova, Yulia; Wilson, Samantha S.; et el." }, { "id": "https://authors.library.caltech.edu/records/ggsbk-9dz34", "eprint_id": 73644, "eprint_status": "archive", "datestamp": "2023-08-20 01:16:23", "lastmod": "2023-10-24 15:33:32", "type": "book_section", "metadata_visibility": "show", "creators": { "items": [ { "id": "Lloyd-J-V", "name": { "family": "Lloyd", "given": "John V." } }, { "id": "Kosten-E-D", "name": { "family": "Kosten", "given": "Emily D." } }, { "id": "Warmann-E-C", "name": { "family": "Warmann", "given": "Emily C." }, "orcid": "0000-0002-2810-4608" }, { "id": "Flowers-C-A", "name": { "family": "Flowers", "given": "Cristofer A." }, "orcid": "0000-0001-7864-3629" }, { "id": "Atwater-H-A", "name": { "family": "Atwater", "given": "Harry A." }, "orcid": "0000-0001-9435-0201" } ] }, "title": "Ray trace optimization of a light trapping filtered concentrator for spectrum splitting photovoltaics", "ispublished": "unpub", "full_text_status": "restricted", "keywords": "photovoltaic cells, optical filters, geometrical \noptics, ray tracing, III-V semiconductor materials", "note": "\u00a9 2014 IEEE. \n\nThis work is supported by the DOW Chemical Company \nand the Department of Energy 'Light-Material Interactions in Energy Conversion' Energy Frontier Research Center under grant DE-SC0001293.", "abstract": "A ray trace model of the light trapping filtered concentrator spectrum splitting architecture is presented. The scripted ray trace allows for examination of non-idealities in materials and design that were not addressed in previous analytical investigations of this optical design. The design of the angle restricting elements is examined with regards to optical efficiency and system efficiency. In addition, the scripted ray trace enables rapid evaluation of multiple candidate filter sets and optimization of the optical design for each set via a gradient ascent algorithm. A discussion of filter design considerations and insight provided by the ray trace model evaluations is presented.", "date": "2014-06", "date_type": "published", "publisher": "IEEE", "place_of_pub": "Piscataway, NJ", "pagerange": "2249-2252", "id_number": "CaltechAUTHORS:20170123-171959817", "isbn": "978-1-4799-4398-2", "book_title": "IEEE 40th Photovoltaic Specialist Conference (PVSC)", "official_url": "https://resolver.caltech.edu/CaltechAUTHORS:20170123-171959817", "rights": "No commercial reproduction, distribution, display or performance rights in this work are provided.", "funders": { "items": [ { "agency": "Dow Chemical Company" }, { "agency": "Department of Energy (DOE)", "grant_number": "DE-SC0001293" } ] }, "local_group": { "items": [ { "id": "JCAP" } ] }, "doi": "10.1109/PVSC.2014.6925373", "pub_year": "2014", "author_list": "Lloyd, John V.; Kosten, Emily D.; et el." }, { "id": "https://authors.library.caltech.edu/records/3631q-4nd82", "eprint_id": 98686, "eprint_status": "archive", "datestamp": "2023-08-19 21:28:56", "lastmod": "2024-01-14 21:57:33", "type": "book_section", "metadata_visibility": "show", "creators": { "items": [ { "id": "May-M-M", "name": { "family": "May", "given": "Matthias M." }, "orcid": "0000-0002-1252-806X" }, { "id": "Supplie-O", "name": { "family": "Supplie", "given": "Oliver" }, "orcid": "0000-0002-2424-7118" }, { "id": "H\u00f6hn-C", "name": { "family": "H\u00f6hn", "given": "Christian" }, "orcid": "0000-0002-2043-598X" }, { "id": "Zabka-W-D", "name": { "family": "Zabka", "given": "Wolf-Dietrich" }, "orcid": "0000-0002-4949-6495" }, { "id": "Lewerenz-H-J", "name": { "family": "Lewerenz", "given": "Hans-Joachim" }, "orcid": "0000-0001-8433-9471" }, { "id": "van-de-Krol-R", "name": { "family": "van de Krol", "given": "Roel" }, "orcid": "0000-0003-4399-399X" }, { "id": "Hannappel-T", "name": { "family": "Hannappel", "given": "Thomas" }, "orcid": "0000-0002-6307-9831" } ] }, "title": "Water-induced modifications of GaP(100) and InP(100) surfaces studied by photoelectron spectroscopy and reflection anisotropy spectroscopy", "ispublished": "unpub", "full_text_status": "public", "keywords": "GaP, InP, water adsorption, water-splitting, photoelectron spectroscopy, in-situ re ection anisotropy spectroscopy", "note": "\u00a9 2013 Society of Photo-Optical Instrumentation Engineers (SPIE). \n\nMM May acknowledges a scholarship from Studienstiftung des deutschen Volkes.\n\nPublished - 88220M.pdf
", "abstract": "In this work, we investigate the initial interaction of water and oxygen with different surface reconstructions of GaP(100) applying photoelectron spectroscopy, low-energy electron diffraction, and reflection anisotropy spectroscopy. Surfaces were prepared by metal-organic vapour phase epitaxy, transferred to ultra-high vacuum, and exposed to oxygen or water vapour at room temperature. The (2 4) reconstructed, Ga-rich surface is more sensitive and reactive to adsorption, bearing a less ordered surface reconstruction upon exposure and indicating a mixture of dissociative and molecular water adsorption. The p(2 2)=c(4 2) P-rich surface, on the other hand, is less reactive, but shows a new surface symmetry after water adsorption. Correlating findings of photoelectron spectroscopy with reflection anisotropy spectroscopy could pave the way towards optical in-situ monitoring of electrochemical surface modifications with reflection anisotropy spectroscopy.", "date": "2013-09-16", "date_type": "published", "publisher": "Society of Photo-Optical Instrumentation Engineers (SPIE)", "place_of_pub": "Bellingham, WA", "pagerange": "Art. No. 88220M", "id_number": "CaltechAUTHORS:20190917-140930361", "isbn": "9780819496720", "book_title": "Solar Hydrogen and Nanotechnology VIII", "official_url": "https://resolver.caltech.edu/CaltechAUTHORS:20190917-140930361", "rights": "No commercial reproduction, distribution, display or performance rights in this work are provided.", "funders": { "items": [ { "agency": "Studienstiftung des deutschen Volkes" } ] }, "local_group": { "items": [ { "id": "JCAP" } ] }, "contributors": { "items": [ { "id": "Kanai-Y", "name": { "family": "Kanai", "given": "Yosuke" } }, { "id": "Prendergast-D", "name": { "family": "Prendergast", "given": "David" } } ] }, "doi": "10.1117/12.2026172", "primary_object": { "basename": "88220M.pdf", "url": "https://authors.library.caltech.edu/records/3631q-4nd82/files/88220M.pdf" }, "pub_year": "2013", "author_list": "May, Matthias M.; Supplie, Oliver; et el." }, { "id": "https://authors.library.caltech.edu/records/myysb-6n653", "eprint_id": 47526, "eprint_status": "archive", "datestamp": "2023-08-19 14:03:40", "lastmod": "2024-01-13 16:06:59", "type": "book_section", "metadata_visibility": "show", "creators": { "items": [ { "id": "Lewerenz-H-J", "name": { "family": "Lewerenz", "given": "Hans-Joachim" }, "orcid": "0000-0001-8433-9471" }, { "id": "Peter-L", "name": { "family": "Peter", "given": "Laurence" } } ] }, "title": "New Perspectives and a Review of Progress", "ispublished": "unpub", "full_text_status": "public", "note": "\u00a9 2013 The Royal Society of Chemistry. \n\nThis material is based upon work performed by the Joint Center for Artificial Photosynthesis, a DOE Energy Innovation Hub, supported though the Office of Science of the US Department of Energy under Award No. DE-SC0004993. HJL acknowledges additional financial support from DFG, grant No. Le 1192-4. The authors are grateful to C. Pettenkofer and M. Lublow for experiments regarding PEEM and fractal Si formation.\n\nPublished - 9781849737739-00419.pdf
", "abstract": "This final chapter reviews a range of topics that could advance the field of lightinduced\nenergy conversion, in particular, of photoelectrochemical approaches,\nbeyond current research and development activities. This compilation represents\na subjective view with data and results considered from the fields of photonics,\nelectronics, electrochemistry and life sciences. Our view of the relevance of these\ntopics to the content of this book is given in short notes, and suggestions are\noutlined about how to incorporate the concepts and findings into the next generation\nof solar fuel generating structures and devices. The chapter concludes\nwith a brief survey of progress towards the ultimate goal of generating solar fuels.", "date": "2013", "date_type": "published", "publisher": "Royal Society of Chemistry", "place_of_pub": "Cambridge", "pagerange": "419-449", "id_number": "CaltechAUTHORS:20140728-130422252", "isbn": "978-1-84973-647-3", "book_title": "Photoelectrochemical Water Splitting: Materials, Processes and Architectures", "official_url": "https://resolver.caltech.edu/CaltechAUTHORS:20140728-130422252", "rights": "No commercial reproduction, distribution, display or performance rights in this work are provided.", "funders": { "items": [ { "agency": "Joint Center for Artificial Photosynthesis (JCAP)" }, { "agency": "Department of Energy (DOE)", "grant_number": "DE-SC0004993" }, { "agency": "Deutsche Forschungsgemeinschaft (DFG)", "grant_number": "Le 1192-4" } ] }, "local_group": { "items": [ { "id": "JCAP" } ] }, "contributors": { "items": [ { "id": "Lewerenz-H-J", "name": { "family": "Lewerenz", "given": "Hans-Joachim" } }, { "id": "Peter-L", "name": { "family": "Peter", "given": "Laurence" } } ] }, "doi": "10.1039/9781849737739-00419", "primary_object": { "basename": "9781849737739-00419.pdf", "url": "https://authors.library.caltech.edu/records/myysb-6n653/files/9781849737739-00419.pdf" }, "pub_year": "2013", "author_list": "Lewerenz, Hans-Joachim and Peter, Laurence" }, { "id": "https://authors.library.caltech.edu/records/tfqmg-abx66", "eprint_id": 47525, "eprint_status": "archive", "datestamp": "2023-08-19 14:03:35", "lastmod": "2024-01-13 16:06:57", "type": "book_section", "metadata_visibility": "show", "creators": { "items": [ { "id": "McKone-J-R", "name": { "family": "McKone", "given": "James" }, "orcid": "0000-0001-6445-7884" }, { "id": "Lewis-N-S", "name": { "family": "Lewis", "given": "Nathan" }, "orcid": "0000-0001-5245-0538" } ] }, "title": "Structured Materials for Photoelectrochemical Water Splitting", "ispublished": "unpub", "full_text_status": "public", "note": "\u00a9 2013 The Royal Society of Chemistry. \n\nThis work was supported in part by the Joint Center for Artificial Photosynthesis, a DOE Energy Innovation Hub. The contribution from NSL was supported through the Office of Science of the U.S. Department of Energy under award No. DE-SC0004993; the contributions from JRM and RLG were supported by BP and by the U.S. Department of Energy under award No. DEFG02-03ER15483. JRM additionally acknowledges the U.S. Department of Energy Office of Science for a graduate research fellowship.\n\nPublished - 9781849737739-00052.pdf
", "abstract": "Efficient and economical photoelectrochemical water splitting requires innovation\non several fronts. Tandem solar absorbers could increase the overall efficiency\nof a water splitting device, but economic considerations motivate\nresearch that employs cheap materials combinations. The need to manage\nsimultaneously light absorption, photogenerated carrier collection, ion transport,\ncatalysis, and gas collection drives efforts toward structuring solar absorber\nand catalyst materials.\nThis chapter divides the subject of structured solar materials into two principal\nsections. The first section investigates the motivations, benefits, and\ndrawbacks of structuring materials for photoelectrochemical water splitting.\nWe introduce the fundamental elements of light absorption, photogenerated\ncarrier collection, photovoltage, electrochemical transport, and catalytic behavior.\nFor each of these elements, we discuss the figures of merit, the critical\nlength scales associated with each process and the way in which these length\nscales must be balanced for efficient generation of solar fuels. This discussion assumes a working knowledge of the fundamentals of semiconductor-liquid\njunctions; for more details the reader is encouraged to consult review articles.\nThe second section of this chapter reviews recent approaches for generating\nstructured semiconductor light absorbers and structured absorber-catalyst\ncomposites. This literature review emphasizes the insights gained in the last\nsix years that are specifically related to photoelectrochemical water splitting,\nrather than to general photoelectrochemistry or photovoltaic applications.\nThis chapter concludes with perspectives and an outlook for future efforts\naimed at solar water splitting using structured materials. The realization of a\npractical, efficient, and useful water splitting device requires significant\nnew developments in materials synthesis as well as deeper understanding of the\nrelevant chemistry and physics. This chapter is intended to motivate such\ndevelopments.", "date": "2013", "date_type": "published", "publisher": "Royal Society of Chemistry", "place_of_pub": "Cambridge", "pagerange": "52-82", "id_number": "CaltechAUTHORS:20140728-125520169", "isbn": "978-1-84973-647-3", "book_title": "Photoelectrochemical Water Splitting: Materials, Processes and Architectures", "official_url": "https://resolver.caltech.edu/CaltechAUTHORS:20140728-125520169", "rights": "No commercial reproduction, distribution, display or performance rights in this work are provided.", "funders": { "items": [ { "agency": "Joint Center for Artificial Photosynthesis (JCAP)" }, { "agency": "Department of Energy (DOE)", "grant_number": "DE-SC0004993" }, { "agency": "BP" }, { "agency": "Department of Energy (DOE)", "grant_number": "DE-FG02-03ER15483" } ] }, "local_group": { "items": [ { "id": "JCAP" } ] }, "contributors": { "items": [ { "id": "Lewerenz-H-J", "name": { "family": "Lewerenz", "given": "Hans-Joachim" } }, { "id": "Peter-L", "name": { "family": "Peter", "given": "Laurence" } } ] }, "doi": "10.1039/9781849737739-00052", "primary_object": { "basename": "9781849737739-00052.pdf", "url": "https://authors.library.caltech.edu/records/tfqmg-abx66/files/9781849737739-00052.pdf" }, "pub_year": "2013", "author_list": "McKone, James and Lewis, Nathan" } ]