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Title: Stable solar-driven oxidation of water by semiconducting photoanodes protected by transparent catalytic nickel oxide films

Journal Article · · Proceedings of the National Academy of Sciences of the United States of America

Reactively sputtered nickel oxide (NiOx) films provide transparent, antireflective, electrically conductive, chemically stable coatings that also are highly active electrocatalysts for the oxidation of water to O2(g). These NiOx coatings provide protective layers on a variety of technologically important semiconducting photoanodes, including textured crystalline Si passivated by amorphous silicon, crystalline n-type cadmium telluride, and hydrogenated amorphous silicon. Finally, under anodic operation in 1.0 M aqueous potassium hydroxide (pH 14) in the presence of simulated sunlight, the NiOx films stabilized all of these self-passivating, high-efficiency semiconducting photoelectrodes for >100 h of sustained, quantitative solar-driven oxidation of water to O2(g).

Research Organization:
California Institute of Technology (CalTech), Pasadena, CA (United States)
Sponsoring Organization:
USDOE Office of Science (SC), Basic Energy Sciences (BES)
Grant/Contract Number:
SC0004993
OSTI ID:
1235159
Alternate ID(s):
OSTI ID: 1348220
Journal Information:
Proceedings of the National Academy of Sciences of the United States of America, Journal Name: Proceedings of the National Academy of Sciences of the United States of America Vol. 112 Journal Issue: 12; ISSN 0027-8424
Publisher:
National Academy of Sciences, Washington, DC (United States)Copyright Statement
Country of Publication:
United States
Language:
English
Citation Metrics:
Cited by: 167 works
Citation information provided by
Web of Science

References (43)

24.7% Record Efficiency HIT Solar Cell on Thin Silicon Wafer journal January 2014
Microstructural evolution during film growth journal September 2003
Volume Changes Induced by the Electrochromic Process in Sputtered Iridium Oxide Films journal January 1981
A taxonomy for solar fuels generators journal January 2015
The Forming Process in Nickel Positive Electrodes journal January 1965
Preface book January 1995
Realizing High-Efficiency Omnidirectional n-Type Si Solar Cells via the Hierarchical Architecture Concept with Radial Junctions journal September 2013
Powering the planet: Chemical challenges in solar energy utilization journal October 2006
Wireless Solar Water Splitting Using Silicon-Based Semiconductors and Earth-Abundant Catalysts journal September 2011
Iron-Treated NiO as a Highly Transparent p-Type Protection Layer for Efficient Si-Based Photoanodes journal September 2014
Stabilization of n-cadmium telluride photoanodes for water oxidation to O 2 (g) in aqueous alkaline electrolytes using amorphous TiO 2 films formed by atomic-layer deposition journal January 2014
Electrochemical and Electrochromic Behavior of Reactively Sputtered Nickel Oxide journal January 1997
An Investigation of Thin-Film Ni–Fe Oxide Catalysts for the Electrochemical Evolution of Oxygen journal August 2013
An Optocatalytic Model for Semiconductor–Catalyst Water-Splitting Photoelectrodes Based on In Situ Optical Measurements on Operational Catalysts journal March 2013
Will Solar-Driven Water-Splitting Devices See the Light of Day? journal September 2013
Characterization of electrochromic dc-sputtered nickel-oxide-based films conference August 1990
Electrochemical Growth of Surface Oxides on Nickel. Part 3: Formation of β-NiOOH in Relation to the Polarization Potential, Polarization Time, and Temperature journal July 2014
An optical study of the deposition and conversion of nickel hydroxide films journal June 1976
Zur kenntnis der nickelhydroxidelektrode—I.Über das nickel (II)-hydroxidhydrat journal August 1966
Ellipsometric determination of optical constants for silicon and thermally grown silicon dioxide via a multi-sample, multi-wavelength, multi-angle investigation journal March 1998
Theory and Simulations of Electrocatalyst-Coated Semiconductor Electrodes for Solar Water Splitting journal April 2014
An experimental and modeling/simulation-based evaluation of the efficiency and operational performance characteristics of an integrated, membrane-free, neutral pH solar-driven water-splitting system journal January 2014
An ellipsometric investigation of nickel oxide films in alkaline solution: The multilayer film approach journal May 1989
Highly Active Mixed-Metal Nanosheet Water Oxidation Catalysts Made by Pulsed-Laser Ablation in Liquids journal September 2014
Identification of Highly Active Fe Sites in (Ni,Fe)OOH for Electrocatalytic Water Splitting journal January 2015
Non-equilibrium effects in the nickel hydroxide electrode journal March 1979
Amorphous TiO2 coatings stabilize Si, GaAs, and GaP photoanodes for efficient water oxidation journal May 2014
Stabilization of Si microwire arrays for solar-driven H 2 O oxidation to O 2 (g) in 1.0 M KOH(aq) using conformal coatings of amorphous TiO 2 journal January 2015
Solar Water Splitting Cells journal November 2010
Nickel–Iron Oxyhydroxide Oxygen-Evolution Electrocatalysts: The Role of Intentional and Incidental Iron Incorporation journal April 2014
Anisotropy in the Anodic Oxidation of Silicon in KOH Solution journal September 2005
An analysis of the optimal band gaps of light absorbers in integrated tandem photoelectrochemical water-splitting systems journal January 2013
Modeling, simulation, and design criteria for photoelectrochemical water-splitting systems journal January 2012
Enabling Silicon for Solar-Fuel Production journal January 2014
Ellipsometric measurement of the optical properties and electrical conductivity of indium tin oxide thin films
  • Woollam, John A.; McGahan, William A.; Johs, Blaine D.
  • 1994 International Symposium on Optical Interference Coatings, SPIE Proceedings https://doi.org/10.1117/12.192175
conference November 1994
Short-wavelength spectral response properties of semiconductor/liquid junctions journal July 1990
High-Efficiency Photoelectrochemical Hydrogen Production Using Multijunction Amorphous Silicon Photoelectrodes journal January 1998
Photochemical Route for Accessing Amorphous Metal Oxide Materials for Water Oxidation Catalysis journal March 2013
Solar water splitting in a molecular photoelectrochemical cell journal November 2013
Mechanism of anodic oxidation of Hg 0.8 Cd 0.2 Te journal March 1982
Stable Solar-Driven Water Oxidation to O 2 (g) by Ni-Oxide-Coated Silicon Photoanodes journal January 2015
Synthesis and electrochemical properties of mesoporous nickel oxide journal August 2004
Facile fabrication of an efficient BiVO4 thin film electrode for water splitting under visible light irradiation journal June 2012