Highly Stable Photoelectrochemical Water Splitting and Hydrogen Generation Using a Double-Band InGaN/GaN Core/Shell Nanowire Photoanode
- 6 August 2013
- journal article
- Published by American Chemical Society (ACS) in Nano Letters
- Vol. 13 (9), 4356-4361
- https://doi.org/10.1021/nl402156e
Abstract
We report on the first demonstration of stable photoelectrochemical water splitting and hydrogen generation on a double-band photoanode in acidic solution (hydrogen bromide), which is achieved by InGaN/GaN core/shell nanowire arrays grown on Si substrate using catalyst-free molecular beam epitaxy. The nanowires are doped n-type using Si to reduce the surface depletion region and increase current conduction. Relatively high incident-photon-to-current-conversion efficiency (up to ∼27%) is measured under ultraviolet and visible light irradiation. Under simulated sunlight illumination, steady evolution of molecular hydrogen is further demonstrated.This publication has 46 references indexed in Scilit:
- Photocurrents from the Direct Irradiation of a Donor–Acceptor Complex Contained in a Thin Film on Indium Tin OxideThe Journal of Physical Chemistry C, 2011
- Semiconducting Oxides to Facilitate the Conversion of Solar Energy to Chemical FuelsThe Journal of Physical Chemistry Letters, 2010
- Photocatalytic Water Splitting: Recent Progress and Future ChallengesThe Journal of Physical Chemistry Letters, 2010
- Photoelectrochemical cellsNature, 2001
- A Realizable Renewable Energy FutureScience, 1999
- A Monolithic Photovoltaic-Photoelectrochemical Device for Hydrogen Production via Water SplittingScience, 1998
- Hydrogen-evolving semiconductor photocathodes: nature of the junction and function of the platinum group metal catalystJournal of the American Chemical Society, 1982
- Photochemical cleavage of water by photocatalysisNature, 1981
- Electrochemical Photolysis of Water at a Semiconductor ElectrodeNature, 1972
- The Photochemistry of the FutureScience, 1912