Function of cobalt and platinum on p-InP in the photoevolution of hydrogen from alkaline solutions

C. E. Goodman*, B. W. Wessels

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

3 Scopus citations

Abstract

The role of metal deposits (e.g., Co and Pt) on p-InP photocathodes in the photoevolution of hydrogen from alkaline solutions was studied. The deposition of Co or Pt on a p-InP photocathode was found to increase the solar-to-chemical efficiency by more than an order of magnitude. Photocurrent-voltage curves before and after metal deposition have shown that the open-circuit voltage remains nearly constant at 0.65-0.77 V. Under a reverse bias of 0.1-0.6 V the presence of metal islands has a large effect on cell performance by improving the short-circuit current and fill factor. This indicates that the deposited metals act as classical catalysts on photocathodes in alkaline hydrogen generating photoelectrochemical cells.

Original languageEnglish (US)
Pages (from-to)829-830
Number of pages2
JournalApplied Physics Letters
Volume49
Issue number13
DOIs
StatePublished - 1986

ASJC Scopus subject areas

  • Physics and Astronomy (miscellaneous)

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