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Modulating the nano...
Modulating the nanoscale morphology on carboxylate-pyrazine containing terpolymer toward 17.8% efficiency organic solar cells with enhanced thermal stability
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- Wu, Jingnan, 1994 (author)
- Aalborg Universitet,Aalborg University,Chalmers tekniska högskola,Chalmers University of Technology,Shandong University,Soochow University
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- Guo, Xia (author)
- Shandong University,Soochow University
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- Xiong, Minghai (author)
- Soochow University
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- Xia, Xinxin (author)
- Chinese University of Hong Kong
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- Li, Qi, 1990 (author)
- Chalmers tekniska högskola,Chalmers University of Technology
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- Fang, Jin (author)
- Soochow University
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- Yan, Xin (author)
- Soochow University
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- Liu, Qi (author)
- Soochow University
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- Lu, Xinhui (author)
- Chinese University of Hong Kong
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- Wang, Ergang, 1981 (author)
- Chalmers tekniska högskola,Chalmers University of Technology
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- Yu, Donghong (author)
- Aalborg Universitet,Aalborg University
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- Zhang, Maojie (author)
- Shandong University,Soochow University
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(creator_code:org_t)
- Elsevier BV, 2022
- 2022
- English.
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In: Chemical Engineering Journal. - : Elsevier BV. - 1385-8947. ; 446
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Abstract
Subject headings
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- It had been commonly accepted in the organic photovoltaic (OPV) community that subtle variations in the molecular structure of active layer materials would cause profound impacts on their aggregating structure and blend morphology and therefore the performance of such polymer solar cells (PSCs). Herein, we employed an electron-deficient building block 3,6-dithiophenyl-2-carboxylate pyrazine (DTCPz) for constructing one series of promising donor terpolymers of PMZ1, PMZ2, and PMZ3, respectively, gaining their relatively lower-lying highest occupied molecular orbital (HOMO) energy levels, more closed π-π stacking and enhanced crystallinity in thin films, and lower miscibility with acceptor Y6, in comparison with their parent polymer counterpart (namely PM6). Reaching DTCPz moieties up to 20% (mol/mol%) in its terpolymer composition, the resulting polymer (PMZ2) achieved more favorable phase separation with improved exciton dissociation, and charge transport and extraction. As a result, an outstanding fill factor of 77.2% and a promising power conversion efficiency of 17.8 % was achieved. Moreover, the corresponding device shows better thermal stability over the PM6-based one. This work suggests a facile method for significantly improving the thin film morphology of the active-layer materials via fine-tuning the chemical structure of electron-deficient units on the backbone of the wide bandgap donor polymer, therefore achieving enhanced photovoltaic performance and thermal stability for practical applications.
Subject headings
- NATURVETENSKAP -- Kemi -- Polymerkemi (hsv//swe)
- NATURAL SCIENCES -- Chemical Sciences -- Polymer Chemistry (hsv//eng)
- NATURVETENSKAP -- Kemi -- Oorganisk kemi (hsv//swe)
- NATURAL SCIENCES -- Chemical Sciences -- Inorganic Chemistry (hsv//eng)
- NATURVETENSKAP -- Kemi -- Materialkemi (hsv//swe)
- NATURAL SCIENCES -- Chemical Sciences -- Materials Chemistry (hsv//eng)
Keyword
- Random ternary polymerization
- Pyrazine
- Non-fullerene
- Wide bandgap
- Organic solar cells
Publication and Content Type
- art (subject category)
- ref (subject category)
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- By the author/editor
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Wu, Jingnan, 199 ...
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Guo, Xia
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Xiong, Minghai
-
Xia, Xinxin
-
Li, Qi, 1990
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Fang, Jin
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show more...
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Yan, Xin
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Liu, Qi
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Lu, Xinhui
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Wang, Ergang, 19 ...
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Yu, Donghong
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Zhang, Maojie
-
show less...
- 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 Inorganic 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 Materials Chemis ...
- Articles in the publication
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Chemical Enginee ...
- By the university
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Chalmers University of Technology