Enhanced Photoelectrochemical Solar Water Splitting Using a Platinum-Decorated CIGS/CdS/ZnO Photocathode

Mukund G. Mali, Hyun Yoon, Bhavana N. Joshi, Hyunwoong Park, Salem S. Al-Deyab, Dong Chan Lim, SeJin Ahn, Carlo Nervi, Suk Goo Yoon

Research output: Contribution to journalArticle

44 Citations (Scopus)

Abstract

A Cu(InGa)Se<inf>2</inf> film was modified with CdS/ZnO for application to solar water splitting. Platinum was electrodeposited on the ZnO layer as a hydrogen evolution catalyst. The effects of the electroplating time and acidity level of the electrolyte on the photocurrent density were studied. The highest photocurrent density of -32.5 mA/cm<sup>2</sup> under 1.5 AM illumination was achieved with an electroplating time of 30 min at a pH of 9. This photocurrent density is higher than those reported in previous studies. The markedly high performance of the CIGS/CdS/ZnO photocathode was rationalized in terms of its type II cascade structure that facilitated efficient charge separation at the interface junction.

Original languageEnglish
Pages (from-to)21619-21625
Number of pages7
JournalACS Applied Materials and Interfaces
Volume7
Issue number38
DOIs
Publication statusPublished - 2015 Sep 30

Fingerprint

Photocathodes
Platinum
Photocurrents
Electroplating
Water
Acidity
Electrolytes
Hydrogen
Lighting
Catalysts

Keywords

  • CIGS/CdS
  • p-n junction
  • photocurrent
  • platinum
  • water splitting

ASJC Scopus subject areas

  • Materials Science(all)

Cite this

Enhanced Photoelectrochemical Solar Water Splitting Using a Platinum-Decorated CIGS/CdS/ZnO Photocathode. / Mali, Mukund G.; Yoon, Hyun; Joshi, Bhavana N.; Park, Hyunwoong; Al-Deyab, Salem S.; Lim, Dong Chan; Ahn, SeJin; Nervi, Carlo; Yoon, Suk Goo.

In: ACS Applied Materials and Interfaces, Vol. 7, No. 38, 30.09.2015, p. 21619-21625.

Research output: Contribution to journalArticle

Mali, Mukund G. ; Yoon, Hyun ; Joshi, Bhavana N. ; Park, Hyunwoong ; Al-Deyab, Salem S. ; Lim, Dong Chan ; Ahn, SeJin ; Nervi, Carlo ; Yoon, Suk Goo. / Enhanced Photoelectrochemical Solar Water Splitting Using a Platinum-Decorated CIGS/CdS/ZnO Photocathode. In: ACS Applied Materials and Interfaces. 2015 ; Vol. 7, No. 38. pp. 21619-21625.
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AU - Al-Deyab, Salem S.

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