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Efficient Dye-Sensi...
Efficient Dye-Sensitized Solar Cells with Voltages Exceeding 1 V through Exploring Tris(4-alkoxyphenyl)amine Mediators in Combination with the Tris(bipyridine) Cobalt Redox System
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- Hao, Yan (author)
- KTH,Tillämpad fysikalisk kemi,KTH Royal Inst Technol, Dept Chem, Appl Phys Chem, SE-10044 Stockholm, Sweden
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- Yang, Wenxing (author)
- Uppsala universitet,Fysikalisk kemi,Emory Univ, Dept Chem, 1515 Dickey Dr NE, Atlanta, GA 30322 USA
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- Karlsson, Karl Martin, 1981- (author)
- KTH,Molekylär elektronik, CMD,KTH Royal Inst Technol, Dept Chem, Appl Phys Chem, SE-10044 Stockholm, Sweden
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- Cong, Jiayan (author)
- KTH,Molekylär elektronik, CMD,KTH Royal Inst Technol, Dept Chem, Appl Phys Chem, SE-10044 Stockholm, Sweden
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- Wang, Shihuai (author)
- Uppsala universitet,Fysikalisk kemi
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- Lo, Xing (author)
- East China Univ Sci & Technol, Inst Fine Chem, Sch Chem & Mol Engn, Key Lab Adv Mat, Shanghai 200237, Peoples R China.
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- Xu, Bo, 1980- (author)
- Uppsala universitet,Fysikalisk kemi
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- Hua, Jianli (author)
- East China Univ Sci & Technol, Inst Fine Chem, Sch Chem & Mol Engn, Key Lab Adv Mat, Shanghai 200237, Peoples R China.
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- Kloo, Lars (author)
- KTH,Molekylär elektronik, CMD,KTH Royal Inst Technol, Dept Chem, Appl Phys Chem, SE-10044 Stockholm, Sweden
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- Boschloo, Gerrit (author)
- Uppsala universitet,Fysikalisk kemi
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- Li, Xing (author)
- East China Univ Sci & Technol, Inst Fine Chem, Sch Chem & Mol Engn, Key Lab Adv Mat, Shanghai 200237, Peoples R China
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(creator_code:org_t)
- 2018-07-15
- 2018
- English.
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In: ACS Energy Letters. - : American Chemical Society (ACS). - 2380-8195. ; 3:8, s. 1929-1937
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https://doi.org/10.1...
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Abstract
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- Tandem redox electrolytes, prepared by the addition of a tris(p-anisyl)amine mediator into classic tris(bipyridine)cobalt-based electrolytes, demonstrate favorable electron transfer and reduced energy loss in dye-sensitized solar cells. Here, we have successfully explored three tris(4-alkoxyphenyl)-amine mediators with bulky molecular structures and generated more effective tandem redox systems. This series of tandem redox electrolytes rendered solar cells with very high photovoltages exceeding 1 V, which approaches the theoretical voltage limit of tris(bipyridine)cobalt-based electrolytes. Solar cells with power conversion efficiencies of 9.7-11.0% under 1 sun illumination were manufactured. This corresponds to an efficiency improvement of up to 50% as compared to solar cells based on pure tris(bipyridine)cobalt-based electrolytes. The photovoltage increases with increasing steric effects of the tris(4-alkoxyphenyl)amine mediators, which is attributed to a retarded recombination kinetics. These results highlight the importance of structural design for optimized charge transfer at the sensitized semiconductor/electrolyte interface and provide insights for the future development of efficient dye-sensitized solar cells.
Subject headings
- NATURVETENSKAP -- Kemi -- Annan kemi (hsv//swe)
- NATURAL SCIENCES -- Chemical Sciences -- Other Chemistry Topics (hsv//eng)
- NATURVETENSKAP -- Kemi -- Fysikalisk kemi (hsv//swe)
- NATURAL SCIENCES -- Chemical Sciences -- Physical Chemistry (hsv//eng)
Publication and Content Type
- ref (subject category)
- art (subject category)
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- By the author/editor
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Hao, Yan
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Yang, Wenxing
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Karlsson, Karl M ...
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Cong, Jiayan
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Wang, Shihuai
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Lo, Xing
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show more...
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Xu, Bo, 1980-
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Hua, Jianli
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Kloo, Lars
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Boschloo, Gerrit
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Li, Xing
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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 Other Chemistry ...
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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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ACS Energy Lette ...
- By the university
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Royal Institute of Technology
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Uppsala University