A highly [001]-textured Sb 2 Se 3 photocathode for efficient photoelectrochemical water reduction

Anisotropic Sb Se is an emerging earth-abundant photocathode for photoelectrochemical water splitting. However, controlling the growth of the Sb Se film with optimal [001] crystallographic orientation is still the most challenging issue. Here, we successfully synthesized [001]-oriented Sb Se via a r...

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Bibliographic Details
Published in:Nanoscale 2019-12, Vol.11 (47), p.22871-22879
Main Authors: Zhou, Hongpeng, Feng, Menglei, Song, Kena, Liao, Bin, Wang, Yichang, Liu, Ruchuan, Gong, Xiangnan, Zhang, Dingke, Cao, Lingfei, Chen, Shijian
Format: Article
Language:English
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Summary:Anisotropic Sb Se is an emerging earth-abundant photocathode for photoelectrochemical water splitting. However, controlling the growth of the Sb Se film with optimal [001] crystallographic orientation is still the most challenging issue. Here, we successfully synthesized [001]-oriented Sb Se via a reliable and facile method. The [001]-oriented Sb Se film could provide an excellent carrier-migration efficiency. Consequently, we achieved a record-high photocurrent density of -20.2 mA cm at 0 V and a very high half-cell solar-to-hydrogen efficiency of 1.36% under 1-sun simulated solar illumination in a TiO /[001]-Sb Se photocathode. This work provides an effective strategy and important guidelines for rationally designing optoelectronic devices based on the [001]-oriented Sb Se film.
ISSN:2040-3364
2040-3372
DOI:10.1039/C9NR08700A