Adjusting the Anisotropy of 1D Sb2Se3 Nanostructures for Highly Efficient Photoelectrochemical Water Splitting

Wooseok Yang, Jihoon Ahn, Yunjung Oh, Jeiwan Tan, Hyungsoo Lee, Jaemin Park, Hyeok Chan Kwon, Juran Kim, William Jo, Joosun Kim, Jooho Moon

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107 Scopus citations


Sb2Se3 has recently spurred great interest as a promising light-absorbing material for solar energy conversion. Sb2Se3 consists of 1D covalently linked nanoribbons stacked via van der Waals forces and its properties strongly depend on the crystallographic orientation. However, strategies for adjusting the anisotropy of 1D Sb2Se3 nanostructures are rarely investigated. Here, a novel approach is presented to fabricate 1D Sb2Se3 nanostructure arrays with different aspect ratios on conductive substrates by simply spin-coating Sb-Se solutions with different molar ratios of thioglycolic acid and ethanolamine. A relatively small proportion of thioglycolic acid induces the growth of short Sb2Se3 nanorod arrays with preferred orientation, leading to fast carrier transport and enhanced photocurrent. After the deposition of TiO2 and Pt, an appropriately oriented Sb2Se3 nanostructure array exhibits a significantly enhanced photoelectrochemical performance; the photocurrent reaches 12.5 mA cm−2 at 0 V versus reversible hydrogen electrode under air mass 1.5 global illumination.

Original languageEnglish
Article number1702888
JournalAdvanced Energy Materials
Issue number14
StatePublished - 15 May 2018

Bibliographical note

Funding Information:
This work was supported by a National Research Foundation (NRF) of Korea grant funded by the Korean government (Ministry of Science and ICT) (No. 2012R1A3A2026417).

Publisher Copyright:
© 2018 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim


  • SbSe nanostructures
  • anisotropy
  • photoelectrochemical water splitting
  • thiol-amine mixture ratio


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