title: Pt/In2S3/CdS/Cu2ZnSnS4 Thin Film as an Efficient and Stable Photocathode for Water Reduction under Sunlight Radiation.
abstract: An electrodeposited Cu2ZnSnS4 (CZTS) compact thin film modified with an In2S3/CdS double layer and Pt deposits (Pt/In2S3/CdS/CZTS) was used as a photocathode for water splitting of hydrogen production under simulated sunlight (AM 1.5G) radiation. Compared to platinized electrodes based on a bare CZTS film (Pt/CZTS) and a CZTS film modified with a CdS single layer (Pt/CdS/CZTS), the Pt/In2S3/CdS/CZTS electrode exhibited a significantly high cathodic photocurrent. Moreover, the coverage of the In2S3 layer was found to be effective for stabilization against degradation induced by photocorrosion of the CdS layer. Bias-free water splitting with a power conversion efficiency of 0.28% was achieved by using a simple two-electrode cell consisting of the Pt/In2S3/CdS/CZTS photocathode and a BiVO4 photoanode.
authors.affiliation: Research Center for Solar Energy Chemistry, Osaka University , 1-3 Machikaneyama, Toyonaka, Osaka 560-8531, Japan.
authors.forename: Feng
authors.initials: F
authors.lastname: Jiang
authors.affiliation: Research Center for Solar Energy Chemistry, Osaka University , 1-3 Machikaneyama, Toyonaka, Osaka 560-8531, Japan.
authors.lastname: Gunawan
authors.affiliation: Research Center for Solar Energy Chemistry, Osaka University , 1-3 Machikaneyama, Toyonaka, Osaka 560-8531, Japan.
authors.forename: Takashi
authors.initials: T
authors.lastname: Harada
authors.affiliation: Department of Chemical System Engineering, School of Engineering, The University of Tokyo , 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-8656, Japan.
authors.forename: Yongbo
authors.initials: Y
authors.lastname: Kuang
authors.affiliation: Department of Chemical System Engineering, School of Engineering, The University of Tokyo , 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-8656, Japan.
authors.forename: Tsutomu
authors.initials: T
authors.lastname: Minegishi
authors.affiliation: Department of Chemical System Engineering, School of Engineering, The University of Tokyo , 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-8656, Japan.
authors.forename: Kazunari
authors.initials: K
authors.lastname: Domen
authors.affiliation: Research Center for Solar Energy Chemistry, Osaka University , 1-3 Machikaneyama, Toyonaka, Osaka 560-8531, Japan.
authors.forename: Shigeru
authors.initials: S
authors.lastname: Ikeda