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Stable Hydrogen Evolution from CdS-Modified CuGaSe 2 Photoelectrode under Visible-Light Irradiation

2013; American Chemical Society; Volume: 135; Issue: 10 Linguagem: Inglês

10.1021/ja312653y

1943-2984

Makoto Moriya, Tsutomu Minegishi, Hiromu Kumagai, Masao Katayama, Jun Kubota, Kazunari Domen,

Copper-based nanomaterials and applications

The photoelectrochemical properties of CuGaSe2 modified by deposition of a thin CdS layer were investigated. The CdS layer formed a p-n junction on the surface of the electrode, improving its photoelectrochemical properties. There was an optimal CdS thickness because of the balance between the charge separation effect and light absorption by CdS. CdS-deposited CuGaSe2 showed high stability under the observed reaction conditions and evolved hydrogen continuously for more than 10 days.