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D-A(1)-D-A(2) Copol...
D-A(1)-D-A(2) Copolymers with Extended Donor Segments for Efficient Polymer Solar Cells
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- Tao, Qiang, 1987 (author)
- Chalmers tekniska högskola,Chalmers University of Technology,Xiangtan University, Peoples R China; Chalmers, Sweden
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- Xu, Xiaofeng, 1984 (author)
- Chalmers tekniska högskola,Chalmers University of Technology,Chalmers, Sweden
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- Xu, Xiaofeng, 1984 (author)
- Chalmers tekniska högskola,Chalmers University of Technology
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- Hedström, Svante (author)
- Lund University,Lunds universitet,Beräkningskemi,Enheten för fysikalisk och teoretisk kemi,Kemiska institutionen,Institutioner vid LTH,Lunds Tekniska Högskola,Computational Chemistry,Physical and theoretical chemistry,Department of Chemistry,Departments at LTH,Faculty of Engineering, LTH,Lund University, Sweden
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- Bäcke, Olof, 1984 (author)
- Chalmers tekniska högskola,Chalmers University of Technology,Chalmers, Sweden
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- James, David, 1987 (author)
- Chalmers tekniska högskola,Chalmers University of Technology,Chalmers, Sweden
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- Persson, Petter (author)
- Lund University,Lunds universitet,Beräkningskemi,Enheten för fysikalisk och teoretisk kemi,Kemiska institutionen,Institutioner vid LTH,Lunds Tekniska Högskola,Computational Chemistry,Physical and theoretical chemistry,Department of Chemistry,Departments at LTH,Faculty of Engineering, LTH,Lund University, Sweden
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- Olsson, Eva, 1960 (author)
- Chalmers tekniska högskola,Chalmers University of Technology,Chalmers, Sweden
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- Inganäs, Olle (author)
- Linköpings universitet,Biomolekylär och Organisk Elektronik,Tekniska högskolan
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- Hou, Lintao (author)
- Jinan University,Jinan University, Peoples R China
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- Zhu, W. G. (author)
- Xiangtan University,Xiangtan University, Peoples R China
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- Wang, Ergang, 1981 (author)
- Chalmers tekniska högskola,Chalmers University of Technology,Chalmers, Sweden
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- Xia, Yuxin (author)
- Linköpings universitet,Biomolekylär och Organisk Elektronik,Tekniska högskolan
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(creator_code:org_t)
- 2015-02-09
- 2015
- English.
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In: Macromolecules. - : American Chemical Society (ACS). - 1520-5835 .- 0024-9297. ; 48:4, s. 1009-1016
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http://dx.doi.org/10...
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https://doi.org/10.1...
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Abstract
Subject headings
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- Typically a donor-acceptor (D-A) design strategy is used for engineering the bandgap of polymers for solar cells. However, in this work, a series of alternating D-A(1-)D-A(2) copolymers PnTQTI(F) were synthesized and characterized with oligothiophenes (nT, n = 1, 2, 3) as the donor and two electron-deficient moieties, quinoxaline and isoindigo, as the acceptors in the repeating unit. We have studied the influence of the donor segments with different numbers of thiophene units and the effect of the addition of fluorine to the quinoxaline unit of the D-A(1)-D-A(2) polymers. The photophysical, electrochemical, and photovoltaic properties of the polymers were examined via a range of techniques and related to theoretical simulations. On increasing the length of the donor thiophene units, broader absorption spectra were observed in addition to a sequential increase in HOMO levels, while the LUMO levels displayed very small variations. The addition of fluorine to the quinoxaline unit not only decreased the HOMO levels of the resulting polymers but also enhanced the absorption coefficients. A superior photovoltaic performance was observed for the P3TQTI-F-based device with a power conversion efficiency (PCE) of 7.0%, which is the highest efficiency for alternating D-A(1)-D-A(2) polymers reported to date. The structureproperty correlations of the PnTQTI(F) polymers demonstrate that varying of the length of the donor segments is a valuable method for designing high-performance D-A(1)-D-A(2) copolymers and highlight the promising nature of D-A(1)-D-A(2) copolymers for efficient bulk-heterojunction solar cells.
Subject headings
- TEKNIK OCH TEKNOLOGIER -- Kemiteknik -- Polymerteknologi (hsv//swe)
- ENGINEERING AND TECHNOLOGY -- Chemical Engineering -- Polymer Technologies (hsv//eng)
- TEKNIK OCH TEKNOLOGIER -- Naturresursteknik -- Energisystem (hsv//swe)
- ENGINEERING AND TECHNOLOGY -- Environmental Engineering -- Energy Systems (hsv//eng)
- NATURVETENSKAP -- Kemi -- Teoretisk kemi (hsv//swe)
- NATURAL SCIENCES -- Chemical Sciences -- Theoretical Chemistry (hsv//eng)
- NATURVETENSKAP -- Biologi (hsv//swe)
- NATURAL SCIENCES -- Biological Sciences (hsv//eng)
Publication and Content Type
- art (subject category)
- ref (subject category)
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- By the author/editor
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Tao, Qiang, 1987
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Xu, Xiaofeng, 19 ...
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Hedström, Svante
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Bäcke, Olof, 198 ...
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James, David, 19 ...
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show more...
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Persson, Petter
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Olsson, Eva, 196 ...
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Inganäs, Olle
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Hou, Lintao
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Zhu, W. G.
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Wang, Ergang, 19 ...
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Xia, Yuxin
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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 Chemical Enginee ...
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and Polymer Technolo ...
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- ENGINEERING AND TECHNOLOGY
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ENGINEERING AND ...
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and Environmental En ...
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and Energy Systems
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- NATURAL SCIENCES
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NATURAL SCIENCES
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and Chemical Science ...
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and Theoretical Chem ...
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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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Macromolecules
- By the university
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Chalmers University of Technology
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Lund University
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Linköping University