Charge transportation at cascade energy structure interfaces of CuInxGa1-xSeyS2-y/CdS/ZnS for spontaneous water splitting

Chae, Sang Youn; Park, Se Jin; Min, Byong Koun; Hwang, Yun Jeong; Joo, Oh-Shim

doi:10.1016/j.electacta.2018.11.184

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Charge transportation at cascade energy structure interfaces of CuInxGa1-xSeyS2-y/CdS/ZnS for spontaneous water splitting

Chae, Sang Youn;
Park, Se Jin;
Min, Byong Koun;
Hwang, Yun Jeong;
Joo, Oh-Shim

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초록

A photoelectrode has to generate high enough photovoltage by efficient charge separation spontaneously to split water. In this study, cascade band structures with CdS and ZnS applied to CuInxGa1-xSeyS2-y (CIGS) photoelectrode of water splitting. The morphology, the electronic and the chemical state of CIGS heterojunction films have been characterized by a scanning electron microscopy, X-ray photoelectron spectroscopy, and ultraviolet photoelectron spectroscopy. The CIGS/CdS/ZnS photocathode shows similar to 400 mV anodic shift of onset potential and 0.028% efficiency for solar to hydrogen conversion when it couples with a WO3/BiVO4/Co-P-i photoanode for water splitting without external bias potential. (C) 2018 Elsevier Ltd. All rights reserved.

키워드

Photoelectrochemical cell; CIGS; CdS; ZnS; Water splitting; SOLAR-CELLS; HYDROGEN EVOLUTION; BIVO4 PHOTOANODES; EFFICIENT; PHOTOCATHODES; PERFORMANCE; OXIDE

제목: Charge transportation at cascade energy structure interfaces of CuInxGa1-xSeyS2-y/CdS/ZnS for spontaneous water splitting

저자: Chae, Sang Youn; Park, Se Jin; Min, Byong Koun; Hwang, Yun Jeong; Joo, Oh-Shim

DOI: 10.1016/j.electacta.2018.11.184

발행일: 2019-02-20

유형: Article

저널명: Electrochimica Acta

권: 297

페이지: 633 ~ 640