Remarkable Stability of Unmodified GaAs Photocathodes during Hydrogen Evolution in Acidic Electrolyte

Todd Deutsch, James Young, John Turner, Michael Dzara, Kenneth Steirer

Research output: Contribution to journalArticlepeer-review

30 Scopus Citations

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.

Original languageAmerican English
Pages (from-to)2831-2836
Number of pages6
JournalJournal of Materials Chemistry A
Volume4
Issue number8
DOIs
StatePublished - 2016

Bibliographical note

Publisher Copyright:
© 2016 The Royal Society of Chemistry.

NREL Publication Number

  • NREL/JA-5900-65160

Keywords

  • photoelectrochemical water splitting
  • semiconductor photocorrosion

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