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The role of connect...
The role of connectivity in significant bandgap narrowing for fused-pyrene based non-fullerene acceptors toward high-efficiency organic solar cells
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- Liu, Shungang (author)
- Chalmers University of Technology
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- Su, Wenyan (author)
- Soochow University
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- Zou, Xianshao (author)
- Lund University,Lunds universitet,NanoLund: Centre for Nanoscience,Annan verksamhet, LTH,Lunds Tekniska Högskola,Kemisk fysik,Enheten för fysikalisk och teoretisk kemi,Kemiska institutionen,Institutioner vid LTH,Other operations, LTH,Faculty of Engineering, LTH,Chemical Physics,Physical and theoretical chemistry,Department of Chemistry,Departments at LTH,Faculty of Engineering, LTH
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- Du, Xiaoyan (author)
- Friedrich-Alexander-Universität Erlangen Nurnberg (FAU),Friedrich-Alexander University Erlangen-Nürnberg
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- Cao, Jiamin (author)
- Chalmers University of Technology
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- Wang, Nong (author)
- Chalmers University of Technology
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- Shen, Xingxing (author)
- Hebei Normal University of Science and Technology,Hebei Normal University of Science & Technology
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- Geng, Xinjian (author)
- Chalmers University of Technology
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- Tang, Zilong (author)
- Hunan University of Science and Technology
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- Yartsev, Arkady (author)
- Lund University,Lunds universitet,NanoLund: Centre for Nanoscience,Annan verksamhet, LTH,Lunds Tekniska Högskola,Kemisk fysik,Enheten för fysikalisk och teoretisk kemi,Kemiska institutionen,Institutioner vid LTH,Other operations, LTH,Faculty of Engineering, LTH,Chemical Physics,Physical and theoretical chemistry,Department of Chemistry,Departments at LTH,Faculty of Engineering, LTH
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- Zhang, Maojie (author)
- Soochow University
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- Gruber, Wolfgang (author)
- Friedrich-Alexander-Universität Erlangen Nurnberg (FAU),Friedrich-Alexander University Erlangen-Nürnberg
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- Unruh, Tobias (author)
- Friedrich-Alexander-Universität Erlangen Nurnberg (FAU),Friedrich-Alexander University Erlangen-Nürnberg
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- Li, Ning (author)
- Friedrich-Alexander-Universität Erlangen Nurnberg (FAU),Friedrich-Alexander University Erlangen-Nürnberg
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- Yu, Donghong (author)
- Aalborg Universitet,Aalborg University
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- Brabec, Christoph J. (author)
- Friedrich-Alexander-Universität Erlangen Nurnberg (FAU),Friedrich-Alexander University Erlangen-Nürnberg
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- Wang, Ergang, 1981 (author)
- Chalmers University of Technology
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(creator_code:org_t)
- 2020
- 2020
- English.
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In: Journal of Materials Chemistry A. - : Royal Society of Chemistry (RSC). - 2050-7488 .- 2050-7496. ; 8:12, s. 5995-6003
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Abstract
Subject headings
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- Great attention has been paid to developing low bandgap non-fullerene acceptors (NFAs) for matching wide bandgap donor polymers to increase the photocurrent and therefore the power conversion efficiencies (PCEs) of NFA organic solar cells, while pyrene-core based acceptor-donor-acceptor (A-D-A) NFAs have been mainly reported via the 2,9-position connection due to their bisthieno[3′,2′-b']thienyl[a,h]pyrene fused via a five-membered ring bridge at the ortho-position of pyrene as the representative one named FPIC5, which has prohibited further narrowing their energy gap. Herein, an acceptor FPIC6 was exploited by creating the 1,8-position connection through fusing as bisthieno[3′,2′-b′]thienyl[f-g,m-n]pyrene linked at the bay-position via a six-membered bridge, with enhanced push-pull characteristics within such A-D-A structure. As a structural isomer of FPIC5, FPIC6 exhibited a much lower bandgap of 1.42 eV (1.63 eV for FPIC5). Therefore, the photocurrent and PCE of PTB7-Th:FPIC6 cells were improved to 21.50 mA cm-2 and 11.55%, respectively, due to the balanced mobilities, better photoluminescence quenching efficiency and optimized morphology, which are both ∼40% better than those of PTB7-Th:FPIC5 cells. Our results clearly proved that a pyrene fused core with 1,8-position connection with electron-withdrawing end groups instead of 2,9-position connection is an efficient molecular design strategy to narrow the optical bandgap and improve the photovoltaic performance of NFA based OSCs.
Subject headings
- NATURVETENSKAP -- Kemi -- Polymerkemi (hsv//swe)
- NATURAL SCIENCES -- Chemical Sciences -- Polymer Chemistry (hsv//eng)
- NATURVETENSKAP -- Kemi -- Materialkemi (hsv//swe)
- NATURAL SCIENCES -- Chemical Sciences -- Materials Chemistry (hsv//eng)
- NATURVETENSKAP -- Kemi -- Organisk kemi (hsv//swe)
- NATURAL SCIENCES -- Chemical Sciences -- Organic Chemistry (hsv//eng)
- NATURVETENSKAP -- Kemi -- Fysikalisk kemi (hsv//swe)
- NATURAL SCIENCES -- Chemical Sciences -- Physical Chemistry (hsv//eng)
- NATURVETENSKAP -- Fysik -- Den kondenserade materiens fysik (hsv//swe)
- NATURAL SCIENCES -- Physical Sciences -- Condensed Matter Physics (hsv//eng)
Publication and Content Type
- art (subject category)
- ref (subject category)
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- By the author/editor
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Liu, Shungang
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Su, Wenyan
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Zou, Xianshao
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Du, Xiaoyan
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Cao, Jiamin
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Wang, Nong
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show more...
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Shen, Xingxing
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Geng, Xinjian
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Tang, Zilong
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Yartsev, Arkady
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Zhang, Maojie
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Gruber, Wolfgang
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Unruh, Tobias
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Li, Ning
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Yu, Donghong
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Brabec, Christop ...
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Wang, Ergang, 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 Polymer Chemistr ...
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- NATURAL SCIENCES
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NATURAL SCIENCES
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and Chemical Science ...
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and Materials Chemis ...
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- NATURAL SCIENCES
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NATURAL SCIENCES
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and Chemical Science ...
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and Organic Chemistr ...
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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 ...
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- NATURAL SCIENCES
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NATURAL SCIENCES
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and Physical Science ...
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and Condensed Matter ...
- 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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Lund University