Journal ArticleDOI
Accelerating materials development for photoelectrochemical hydrogen production: Standards for methods, definitions, and reporting protocols
Zhebo Chen,Thomas F. Jaramillo,Todd G. Deutsch,Alan Kleiman-Shwarsctein,Arnold J. Forman,Nicolas Gaillard,Roxanne Garland,Kazuhiro Takanabe,Clemens Heske,Mahendra K. Sunkara,Eric W. McFarland,Kazunari Domen,Eric L. Miller,John A. Turner,Huyen N. Dinh +14 more
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In this paper, a flow chart with standard procedures for PEC characterization techniques for planar photoelectrode materials (i.e., not suspensions of particles) with a focus on single band gap absorbers is presented.Abstract:
Photoelectrochemical (PEC) water splitting for hydrogen production is a promising technology that uses sunlight and water to produce renewable hydrogen with oxygen as a by-product. In the expanding field of PEC hydrogen production, the use of standardized screening methods and reporting has emerged as a necessity. This article is intended to provide guidance on key practices in characterization of PEC materials and proper reporting of efficiencies. Presented here are the definitions of various efficiency values that pertain to PEC, with an emphasis on the importance of solar-to-hydrogen efficiency, as well as a flow chart with standard procedures for PEC characterization techniques for planar photoelectrode materials (i.e., not suspensions of particles) with a focus on single band gap absorbers. These guidelines serve as a foundation and prelude to a much more complete and in-depth discussion of PEC techniques and procedures presented elsewhere.read more
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Reversible GaInP2 Surface Passivation by Water Adsorption: A Model System for Ambient-Dependent Photoluminescence
James L. Young,James L. Young,Henning Döscher,Henning Döscher,John A. Turner,Todd G. Deutsch +5 more
TL;DR: In this article, the photoluminescence (PL) intensity of semiconductors can be modulated by their ambient, and the authors derived a model for this behavior based on Langmuir adsorption and Shockley-Read-Hall recombination principles to describe how partial pressure controls luminescence.
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Pulse-Plating Electrodeposition of Metallic Bi in an Organic-Free Aqueous Electrolyte and Its Conversion into BiVO4 To Improve Photoelectrochemical Activity toward Pollutant Degradation under Visible Light
Iliana Fuentes-Camargo,Juan E. Carrera-Crespo,Jorge Vazquez-Arenas,Issis C. Romero-Ibarra,Julia L. Rodríguez,Luis Lartundo-Rojas,Judith Cardoso-Martínez +6 more
TL;DR: In this paper, a low-cost and durable BiVO4 photoelectrode (PE) was synthesized to improve the separation of the electron and hole pair in photo-electrochemical applications.
Journal ArticleDOI
Growth of bismuth oxyhalide nanoplates on self-standing TiO 2 nanowire film exhibiting enhanced photoelectrochemical performances
TL;DR: In this paper, the authors reported the sequential modification of the free-standing TiO 2 nanowires film with Ag nanoparticles and BiOX (X = Cl, Br, and I) nanoplates, for a purpose of achieving an efficient photoelectrochemical cells.
Journal ArticleDOI
Functional Blocking Layer of Twisted Tungsten Oxide Nanorod Grown by Electrochemical Anodization for Photoelectrochemical Water Splitting
Pran Krisna Das,Maheswari Arunachalam,Young Jun Seo,Kwang-Soon Ahn,Jun-Seok Ha,Soon Hyung Kang +5 more
Journal ArticleDOI
van der Waals heterostructure for photocatalysis: Graphitic carbon nitride and Janus transition-metal dichalcogenides
TL;DR: In this article, the authors investigated the electronic, optical and excitonic properties that determine the photocatalytic activity in a van der Waals heterostructure and showed that the high optical absorptions span throughout the entire visible and near ultraviolet regime in these two-dimensional nanocomposites.
References
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Journal ArticleDOI
Electrochemical Photolysis of Water at a Semiconductor Electrode
Akira Fujishima,Kenichi Honda +1 more
TL;DR: Water photolysis is investigated by exploiting the fact that water is transparent to visible light and cannot be decomposed directly, but only by radiation with wavelengths shorter than 190 nm.
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Optical Properties and Electronic Structure of Amorphous Germanium
Jan Tauc,R. Grigorovici,A. Vancu +2 more
TL;DR: In this article, the optical constants of amorphous Ge were determined for the photon energies from 0.08 to 1.6 eV, and the absorption is due to k-conserving transitions of holes between the valence bands as in p-type crystals.
Journal ArticleDOI
Powering the planet: Chemical challenges in solar energy utilization
Nathan S. Lewis,Daniel G. Nocera +1 more
TL;DR: Solar energy is by far the largest exploitable resource, providing more energy in 1 hour to the earth than all of the energy consumed by humans in an entire year, and if solar energy is to be a major primary energy source, it must be stored and dispatched on demand to the end user.
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Conduction in non-crystalline systems V. Conductivity, optical absorption and photoconductivity in amorphous semiconductors
E. A. Davis,Nevill Mott +1 more
TL;DR: In this article, the experimental evidence concerning the density of states in amorphous semiconductors and the ranges of energy in which states are localized is reviewed; this includes d.c and a.c. conductivity, drift mobility and optical absorption.
Journal ArticleDOI
New contributions to the optics of intensely light-scattering materials.
TL;DR: In this paper, the Gurevic and Judd formulas were derived from the Kubelka-Munk differential equations, and they are exact under the same conditions as in this paper, that is, when the material is perfectly dull and when the light, is perfectly diffused or if it is parallel and hits the specimen under an angle of 60° from normal.