Band-aligned C3N4-xS3x/2 stabilizes CdS/CuInGaS2 photocathodes for efficient water reduction

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Author(s)
Wang, Danping
Wang, Chongwu
de Arquer, F Pelayo Garcia
Zhong, Juhua
Qian, Ling
Fang, Lijun
Liu, Pengfei
Pang, Yuanjie
Liu, Min
Liu, Mengxia
Zheng, Gengfeng
Sinton, David
Sargent, Edward H
Yang, Huagui
Zhang, Bo
Griffith University Author(s)
Year published
2017
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Abstract
Compared with bare CIGS films and CdS-modified CIGS films (CdS/CIGS), C3N4−xS3x/2/CdS/CIGS electrodes exhibit a reduction of 200 mV in the onset potential. They also show a doubled photocurrent at 0 V versus the RHE, and a broadband 20% enhancement of incident photon to current efficiency (IPCE) in noble-metal-free systems. Remarkably, the C3N4−xS3x/2/CdS/CIGS electrode shows ≤5% loss over 20 hours of continuous operation, whereas bare CdS/CIGS shows a rapid degradation within the first 4 hours.
Journal Title
Journal of Materials Chemistry A
Volume
5
Issue
7
DOI
Copyright Statement
© 2017 Royal Society of Chemistry. This is the author-manuscript version of this paper. Reproduced in accordance with the copyright policy of the publisher. Please refer to the journal website for access to the definitive, published version.
Subject
Macromolecular and materials chemistry
Materials engineering
Science & Technology
Physical Sciences
Chemistry, Physical
Energy & Fuels
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