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Inverted all-polyme...
Inverted all-polymer solar cells based on a quinoxaline-thiophene/naphthalene-diimide polymer blend improved by annealing
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- Xia, Yuxin (author)
- Linköpings universitet,Institutionen för fysik, kemi och biologi,Tekniska fakulteten,Jinan University, Peoples R China
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- Musumeci, Chiara (author)
- Linköpings universitet,Biomolekylär och Organisk Elektronik,Tekniska fakulteten
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- Bergqvist, Jonas (author)
- Linköpings universitet,Biomolekylär och Organisk Elektronik,Tekniska fakulteten
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- Ma, W. (author)
- Xi'an Jiaotong University,Xi An Jiao Tong University, Peoples R China
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- Gao, Feng (author)
- Linköpings universitet,Biomolekylär och Organisk Elektronik,Tekniska fakulteten
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- Tang, Zheng (author)
- Linköpings universitet,Institutionen för fysik, kemi och biologi,Tekniska fakulteten,University of Calif Berkeley, CA 94720 USA
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- Bai, Sai (author)
- Linköpings universitet,Biomolekylär och Organisk Elektronik,Tekniska fakulteten
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- Jin, Y. Z. (author)
- Zhejiang University,Zhejiang University, Peoples R China
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- Zhu, C. H. (author)
- Lawrence Berkeley National Laboratory,University of Calif Berkeley, CA 94720 USA
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- Kroon, Renee, 1982 (author)
- University of South Australia,Zhejiang University, Peoples R China
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- Wang, C. F. (author)
- Lawrence Berkeley National Laboratory
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- Andersson, Mats, 1966 (author)
- University of South Australia,University of S Australia, Australia
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- Hou, Lintao (author)
- Jinan University,Jinan University, Peoples R China
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- Inganäs, Olle (author)
- Linköpings universitet,Biomolekylär och Organisk Elektronik,Tekniska fakulteten
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- Wang, Ergang, 1981 (author)
- Chalmers tekniska högskola,Chalmers University of Technology,Chalmers, Sweden
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(creator_code:org_t)
- 2016
- 2016
- English.
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In: Journal of Materials Chemistry A. - : Royal Society of Chemistry (RSC). - 2050-7488 .- 2050-7496. ; 4:10, s. 3835-3843
- Related links:
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http://dx.doi.org/10...
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Abstract
Subject headings
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- We have investigated the effect of thermal annealing on the photovoltaic parameters of all-polymer solar cells based on a quinoxaline-thiophene donor polymer (TQ1) and a naphthalene diimide acceptor polymer (N2200). The annealed devices show a doubled power conversion efficiency compared to nonannealed devices, due to the higher short-circuit current (J(sc)) and fill factor (FF), but with a lower open circuit voltage (V-oc). On the basis of the morphology-mobility examination by several scanning force microscopy techniques, and by grazing-incidence wide-angle X-ray scattering, we conclude that better charge transport is achieved by higher order and better interconnected networks of the bulk heterojunction in the annealed active layers. The annealing improves charge transport and extends the conjugation length of the polymers, which do help in charge generation and meanwhile reduce recombination. Photoluminescence, electroluminescence, and light intensity dependence measurements reveal how this morphological change affects charge generation and recombination. As a result, the J(sc) and FF are significantly improved. However, the smaller band gap and the higher HOMO level of TQ1 upon annealing causes a lower V-oc. The blend of an amorphous polymer TQ1, and a semi-crystalline polymer N2200, can thus be modified by thermal annealing to double the power conversion efficiency.
Subject headings
- TEKNIK OCH TEKNOLOGIER -- Naturresursteknik (hsv//swe)
- ENGINEERING AND TECHNOLOGY -- Environmental Engineering (hsv//eng)
- TEKNIK OCH TEKNOLOGIER -- Kemiteknik -- Polymerteknologi (hsv//swe)
- ENGINEERING AND TECHNOLOGY -- Chemical Engineering -- Polymer Technologies (hsv//eng)
- NATURVETENSKAP -- Biologi (hsv//swe)
- NATURAL SCIENCES -- Biological Sciences (hsv//eng)
Keyword
- acceptor
- performance
- crystallinity
- open-circuit voltage
- high-mobility
- photovoltaics
- efficiency
- aggregation
- morphology
- conjugated polymers
Publication and Content Type
- art (subject category)
- ref (subject category)
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- By the author/editor
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Xia, Yuxin
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Musumeci, Chiara
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Bergqvist, Jonas
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Ma, W.
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Gao, Feng
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Tang, Zheng
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show more...
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Bai, Sai
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Jin, Y. Z.
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Zhu, C. H.
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Kroon, Renee, 19 ...
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Wang, C. F.
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Andersson, Mats, ...
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Hou, Lintao
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Inganäs, Olle
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Wang, Ergang, 19 ...
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- About the subject
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- ENGINEERING AND TECHNOLOGY
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ENGINEERING AND ...
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and Environmental En ...
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- ENGINEERING AND TECHNOLOGY
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ENGINEERING AND ...
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and Chemical Enginee ...
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and Polymer Technolo ...
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- NATURAL SCIENCES
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NATURAL SCIENCES
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and Biological Scien ...
- Articles in the publication
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Journal of Mater ...
- By the university
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Chalmers University of Technology
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Linköping University