光电阴极
光电流
硒化铜铟镓太阳电池
材料科学
分解水
能量转换效率
固溶体
光电子学
光电导性
光电化学电池
太阳能电池
电极
电解质
光催化
化学
物理化学
冶金
催化作用
物理
电子
量子力学
生物化学
作者
Hiroyuki Kaneko,Tsutomu Minegishi,Mamiko Nakabayashi,Naoya Shibata,Yongbo Kuang,Taro Yamada,Kazunari Domen
标识
DOI:10.1002/adfm.201600615
摘要
Thin films of a solid solution of ZnSe and CuIn 0.7 Ga 0.3 Se 2 ((ZnSe) x (CIGS) 1–x ) are prepared by co‐evaporation. Structural characterization reveals that the ZnSe and CIGS form a solid solution with no phase separation. (ZnSe) 0.85 (CIGS) 0.15 ‐based photocathodes modified with Pt, Mo, Ti, and CdS exhibit a photocurrent of 7.1 mA cm −2 at 0 V RHE , and a relatively high onset potential of 0.89 V RHE under simulated sunlight. A two‐electrode cell containing a (ZnSe) 0.85 (CIGS) 0.15 photocathode and a BiVO 4 ‐based photoanode has an initial solar‐to‐hydrogen conversion efficiency of 0.91%, which is one of the highest values reported for a photoanode–photocathode combination. Thus, (ZnSe) 0.85 (CIGS) 0.15 is a promising photocathode material for efficient photoelectrochemical water splitting.
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