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Efficient dye-sensi...
Efficient dye-sensitized solar cells based on bioinspired copper redox mediators by tailoring counterions
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Li, L. (author)
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Zhao, L. (author)
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Jiang, X. (author)
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Yu, Z. (author)
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Liu, J. (author)
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Rui, H. (author)
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Shen, J. (author)
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Sharmoukh, W. (author)
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Allam, N. K. (author)
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- Sun, Licheng, 1962- (author)
- KTH,Organisk kemi,State Key Laboratory of Fine Chemicals, Dalian University of Technology (DUT), Dalian, China; Center of Artificial Photosynthesis for Solar Fuels, School of Science, Westlake University, Hangzhou, China
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(creator_code:org_t)
- 2022
- 2022
- English.
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In: Journal of Materials Chemistry A. - : Royal Society of Chemistry (RSC). - 2050-7488 .- 2050-7496. ; 10:8, s. 4131-4136
- Related links:
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https://urn.kb.se/re...
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https://doi.org/10.1...
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Abstract
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- In recent years, copper(ii/i) complexes have attracted growing interest as redox mediators in dye-sensitized solar cells. Here, we report a new class of copper complexes bearing a bis(2-pyridylmethyl)-1,2-ethanedithiol ligand, coded as [Cu(N2S2)]2+/+, with tetrafluoroborate ([BF4]-) and hexafluorophosphate ([PF6]-) counterions. Strikingly, it is discovered that the solubility and diffusion coefficients of Cu(i) species are dramatically improved by changing the counterion from [BF4]- to [PF6]-. As a result, DSCs incorporating the latter redox system show a much enhanced short-circuit current density and fill factor, which in turn lead to a superior overall power conversion efficiency (PCE) of 10.3% under one sun illumination (100 mW cm-2, AM 1.5G). This has been the highest PCE reported so far for copper redox mediators with sulfur-coordinating ligands in DSCs. Thus, this work provides an effective strategy for further design of more efficient redox mediators in DSCs.
Subject headings
- NATURVETENSKAP -- Kemi -- Fysikalisk kemi (hsv//swe)
- NATURAL SCIENCES -- Chemical Sciences -- Physical Chemistry (hsv//eng)
Keyword
- Copper compounds
- Ions
- Ligands
- Redox reactions
- Cell-based
- Copper complexes
- Counterions
- Density factor
- Dye- sensitized solar cells
- Hexafluorophosphates
- Redox mediators
- Redox systems
- Short circuit current density
- Tetrafluoroborates
- Dye-sensitized solar cells
Publication and Content Type
- ref (subject category)
- art (subject category)
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- By the author/editor
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Li, L.
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Zhao, L.
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Jiang, X.
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Yu, Z.
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Liu, J.
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Rui, H.
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show more...
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Shen, J.
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Sharmoukh, W.
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Allam, N. K.
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Sun, Licheng, 19 ...
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- About the subject
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- NATURAL SCIENCES
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NATURAL SCIENCES
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and Chemical Science ...
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and Physical Chemist ...
- Articles in the publication
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Journal of Mater ...
- By the university
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Royal Institute of Technology