Issue 8, 2016
From the journal:

Journal of Materials Chemistry A

Remarkable stability of unmodified GaAs photocathodes during hydrogen evolution in acidic electrolyte†

J. L. Young,ab   K. X. Steirer,a   M. J. Dzara,c   J. A. Turnera  and  T. G. Deutsch*a  

* Corresponding authors

a National Renewable Energy Laboratory, Golden, CO, USA
E-mail: Todd.Deutsch@nrel.gov

b Materials Science and Engineering Program, University of Colorado, Boulder, CO, USA

c Department of Chemical Engineering, Rochester Institute of Technology, Rochester, NY 14623, USA

Abstract

We report on the remarkable stability of unmodified, epitaxially grown GaAs photocathodes during hydrogen evolution at −15 mA cm−2 in 3 M sulfuric acid electrolyte. Contrary to the perception regarding instability of III–V photoelectrodes, results here show virtually no performance degradation and minimal etching after 120 hours.

Graphical abstract: Remarkable stability of unmodified GaAs photocathodes during hydrogen evolution in acidic electrolyte

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Article information

DOI
https://doi.org/10.1039/C5TA07648J
Article type
Communication
Submitted
24 Sep 2015
Accepted
20 Nov 2015
First published
25 Nov 2015

J. Mater. Chem. A, 2016,4, 2831-2836

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Remarkable stability of unmodified GaAs photocathodes during hydrogen evolution in acidic electrolyte

J. L. Young, K. X. Steirer, M. J. Dzara, J. A. Turner and T. G. Deutsch, J. Mater. Chem. A, 2016, 4, 2831 DOI: 10.1039/C5TA07648J

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