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A Highly [001]-Textured Sb2Se3 Photocathode for Efficient Photoelectrochemical Water Reduction

Abstract

The anisotropic Sb2Se3 is an emerging earth-abundant photocathode for photoelectrochemical water splitting. However, controlling the growth of Sb2Se3 film with optimal [001] crystallographic orientation is still most challenging issue. Here, we successfully synthesized [001]-oriented Sb2Se3 via a reliable and facile method. [001]-oriented Sb2Se3 film can provide an excellent carrier-migration efficiency. Consequently, we achieved a record-high photocurrent density of -20.2 mA cm-2 at 0 VRHE and a very high half-cell solar-to-hydrogen efficiency of 1.36 % under 1-sun simulated solar illumination in TiO2/[001]-Sb2Se3 photocathode. This work provides an effective strategy and important guidelines for rationally designing optoelectronic device basing on [001]-oriented Sb2Se3 film.

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Publication details

The article was received on 10 Oct 2019, accepted on 06 Nov 2019 and first published on 06 Nov 2019


Article type: Paper
DOI: 10.1039/C9NR08700A
Nanoscale, 2019, Accepted Manuscript

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    A Highly [001]-Textured Sb2Se3 Photocathode for Efficient Photoelectrochemical Water Reduction

    H. Zhou, M. Feng, S. Kena, B. Liao, Y. Wang, R. Liu, X. Gong, D. Zhang, L. Cao and S. Chen, Nanoscale, 2019, Accepted Manuscript , DOI: 10.1039/C9NR08700A

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