Adjusting the Anisotropy of 1D Sb 2 Se 3 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, Joo Ho Moon

Research output: Contribution to journalArticle

32 Citations (Scopus)

Abstract

Sb 2 Se 3 has recently spurred great interest as a promising light-absorbing material for solar energy conversion. Sb 2 Se 3 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 Sb 2 Se 3 nanostructures are rarely investigated. Here, a novel approach is presented to fabricate 1D Sb 2 Se 3 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 Sb 2 Se 3 nanorod arrays with preferred orientation, leading to fast carrier transport and enhanced photocurrent. After the deposition of TiO 2 and Pt, an appropriately oriented Sb 2 Se 3 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
Volume8
Issue number14
DOIs
Publication statusPublished - 2018 May 15

Fingerprint

Nanostructures
Anisotropy
Photocurrents
Water
Ethanolamines
Nanoribbons
Van der Waals forces
Carbon Nanotubes
Ethanolamine
Acids
Carrier transport
Spin coating
Nanorods
Energy conversion
Solar energy
Aspect ratio
Hydrogen
Lighting
Electrodes
Substrates

All Science Journal Classification (ASJC) codes

  • Renewable Energy, Sustainability and the Environment
  • Materials Science(all)

Cite this

Yang, Wooseok ; Ahn, Jihoon ; Oh, Yunjung ; Tan, Jeiwan ; Lee, Hyungsoo ; Park, Jaemin ; Kwon, Hyeok Chan ; Kim, Juran ; Jo, William ; Kim, Joosun ; Moon, Joo Ho. / Adjusting the Anisotropy of 1D Sb 2 Se 3 Nanostructures for Highly Efficient Photoelectrochemical Water Splitting In: Advanced Energy Materials. 2018 ; Vol. 8, No. 14.
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Adjusting the Anisotropy of 1D Sb 2 Se 3 Nanostructures for Highly Efficient Photoelectrochemical Water Splitting . / Yang, Wooseok; Ahn, Jihoon; Oh, Yunjung; Tan, Jeiwan; Lee, Hyungsoo; Park, Jaemin; Kwon, Hyeok Chan; Kim, Juran; Jo, William; Kim, Joosun; Moon, Joo Ho.

In: Advanced Energy Materials, Vol. 8, No. 14, 1702888, 15.05.2018.

Research output: Contribution to journalArticle

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AU - Lee, Hyungsoo

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AU - Jo, William

AU - Kim, Joosun

AU - Moon, Joo Ho

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