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Compound Homojunction:Heterojunction Reduces Bulk and Interface Recombination in ZnO Photoanodes for Water Splitting
Author(s) -
Wang Ning,
Liu Min,
Tan Hairen,
Liang Junhui,
Zhang Qixing,
Wei Changchun,
Zhao Ying,
Sargent Edward H.,
Zhang Xiaodan
Publication year - 2017
Publication title -
small
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 3.785
H-Index - 236
eISSN - 1613-6829
pISSN - 1613-6810
DOI - 10.1002/smll.201603527
Subject(s) - homojunction , heterojunction , water splitting , materials science , optoelectronics , interface (matter) , recombination , semiconductor , nanotechnology , computer science , electrolyte , photocatalysis , physics , chemistry , biochemistry , electrode , gene , catalysis , capillary number , quantum mechanics , capillary action , composite material
Photoelectrochemical water splitting is far more efficient thanks to the novel ZnOSe/ZnO/BZO thin‐film photoanodes fabricated in this work. A novel structure is developed for simultaneously suppressing the charge recombination in the ZnO bulk and at the semiconductor–electrolyte interface. This structure achieves a five‐fold enhancement in water‐splitting performance, compared to that of pristine ZnO photoanodes, when illuminated using visible light.