Enhanced Photoelectrochemical Solar Water Splitting Using a Platinum-Decorated CIGS/CdS/ZnO Photocathode
- Authors
- Mali, Mukund G.; Yoon, Hyun; Joshi, Bhavana N.; Park, Hyunwoong; Al-Deyab, Salem S.; Lim, Dong Chan; Ahn, SeJin; Nervi, Carlo; Yoon, Sam S.
- Issue Date
- 30-9월-2015
- Publisher
- AMER CHEMICAL SOC
- Keywords
- CIGS/CdS; photocurrent; platinum; p-n junction; water splitting
- Citation
- ACS APPLIED MATERIALS & INTERFACES, v.7, no.38, pp.21619 - 21625
- Indexed
- SCIE
SCOPUS
- Journal Title
- ACS APPLIED MATERIALS & INTERFACES
- Volume
- 7
- Number
- 38
- Start Page
- 21619
- End Page
- 21625
- URI
- https://scholar.korea.ac.kr/handle/2021.sw.korea/92431
- DOI
- 10.1021/acsami.5b07267
- ISSN
- 1944-8244
- Abstract
- A Cu(InGa)Se-2 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 photo current density of -32.5 mA/cm(2) 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.
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