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Cited by 88TiO2 Photocatalysis and Solar Cells2D Materials and ApplicationsAdvanced Photocatalysis Techniques

Few-Layer MoSe2 Possessing High Catalytic Activity towards Iodide/Tri-iodide Redox Shuttles

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Lee, Lawrence Tien Lin, He, Jian, Wang, Baohua, Ma, Yaping, Wong, King Young, Li, Quan, Xiao, Xudong, Chen, Tao·2014·Scientific Reports
DOI 10.1038/srep04063PMC PMC3924216
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Abstract

Due to the two-dimensional confinement of electrons, single- and few-layer MoSe₂ nanostructures exhibit unusual optical and electrical properties and have found wide applications in catalytic hydrogen evolution reaction, field effect transistor, electrochemical intercalation, and so on. Here we present a new application in dye-sensitized solar cell as catalyst for the reduction of I₃(-) to I(-) at the counter electrode. The few-layer MoSe₂ is fabricated by surface selenization of Mo-coated soda-lime glass. Our results show that the few-layer MoSe₂ displays high catalytic efficiency for the regeneration of I(-) species, which in turn yields a photovoltaic energy conversion efficiency of 9.00%, while the identical photoanode coupling with "champion" electrode based on Pt nanoparticles on FTO glass generates efficiency only 8.68%. Thus, a Pt- and FTO-free counter electrode outperforming the best conventional combination is obtained. In this electrode, Mo film is found to significantly decrease the sheet resistance of the counter electrode, contributing to the excellent device performance. Since all of the elements in the electrode are of high abundance ratios, this type of electrode is promising for the fabrication of large area devices at low materials cost.

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Cited by

Sorted by citations

Authors
Lee, L. T. L., He, J., Wang, B., Ma, Y., Wong, K. Y., Li, Q., Xiao, X., & Chen, T.
Affiliations
Chinese University of Hong Kong (HK)
Corresponding author
Chen, Tao
ORCID
Venue
Scientific Reports
Publisher
Springer Science and Business Media LLC
Published
2014-02-14
Volume
4
Issue
1
Pages
4063-4063
ISSN
2045-2322 (ISSN-L)
DOI
10.1038/srep04063
PMC
PMC3924216
OpenAlex
W2076765548
Cited by
88
References
1
Citations by year
2025: 4 · 2024: 4 · 2023: 1 · 2022: 4 · 2021: 4 · 2020: 3 · 2019: 4 · 2018: 10 · 2017: 14 · 2016: 11 · 2015: 19 · 2014: 10
FWCI
5.94
Type
journal article
Language
en
Open access
Licence
Locations
  • Scientific Reports (publishedVersion, cc-by-nc-sa)
  • Europe PMC (PubMed Central) (publishedVersion, cc-by-nc-sa)
  • PubMed Central (publishedVersion, cc-by-nc-sa)
  • PubMed (publishedVersion)
Funders
Chinese University of Hong Kong
Topics
  • Physical Sciences › Energy › Renewable Energy, Sustainability and the Environment › TiO2 Photocatalysis and Solar Cells
  • Physical Sciences › Materials Science › Materials Chemistry › 2D Materials and Applications
  • Physical Sciences › Energy › Renewable Energy, Sustainability and the Environment › Advanced Photocatalysis Techniques
Keywords
triiodide reduction, dye-sensitized solar cells, counter electrode, platinum-free counter electrode, sheet resistance, two-dimensional materials, solar cell efficiency

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