Adjusting the Anisotropy of 1D Sb2Se3 Nanostructures for Highly Efficient Photoelectrochemical Water Splitting
- 주제(키워드) anisotropy , photoelectrochemical water splitting , Sb2Se3 nanostructures , thiol-amine mixture ratio
- 주제(기타) Chemistry, Physical; Energy & Fuels; Materials Science, Multidisciplinary; Physics, Applied; Physics, Condensed Matter
- 설명문(일반) [Yang, Wooseok; Ahn, Jihoon; Oh, Yunjung; Tan, Jeiwan; Lee, Hyungsoo; Park, Jaemin; Kwon, Hyeok-Chan; Moon, Jooho] Yonsei Univ, Dept Mat Sci & Engn, 50 Yonsei Ro, Seoul 03722, South Korea; [Kim, Juran; Jo, William; Kim, Joosun] Ewha Womans Univ, Dept Phys, Ewhayeodae Gil 50, Seoul 03760, South Korea; [Kim, Juran; Kim, Joosun] Korea Inst Sci & Technol, High Temp Energy Mat Res Ctr, Seoul 02792, South Korea
- 등재 SCIE, SCOPUS
- 발행기관 WILEY-V C H VERLAG GMBH
- 발행년도 2018
- URI http://www.dcollection.net/handler/ewha/000000151543
- 본문언어 영어
- Published As http://dx.doi.org/10.1002/aenm.201702888
초록/요약
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.
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