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High-performance al...
High-performance all-polymer solar cells based on fluorinated naphthalene diimide acceptor polymers with fine-tuned crystallinity and enhanced dielectric constants
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- Li, Zhaojun, 1989 (författare)
- Chalmers tekniska högskola,Chalmers University of Technology
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- Xu, Xiaofeng, 1984 (författare)
- Chalmers tekniska högskola,Chalmers University of Technology
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- Wang, Junke (författare)
- Technische Universiteit Eindhoven,Eindhoven University of Technology
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- Lin, Baojun (författare)
- Xi'an Jiaotong University
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- Ma, W. (författare)
- Xi'an Jiaotong University
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- Xia, Yangjun (författare)
- Lanzhou Jiaotong University
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- Andersson, Mats, 1966 (författare)
- Flinders University of South Australia
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- Janssen, R. A. J. (författare)
- Technische Universiteit Eindhoven,Eindhoven University of Technology
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- Wang, Ergang, 1981 (författare)
- Chalmers tekniska högskola,Chalmers University of Technology
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(creator_code:org_t)
- Elsevier BV, 2018
- 2018
- Engelska.
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Ingår i: Nano Energy. - : Elsevier BV. - 2211-2855. ; 45, s. 368-379
- Relaterad länk:
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https://pure.tue.nl/...
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https://doi.org/10.1...
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https://research.cha...
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Abstract
Ämnesord
Stäng
- Growing interests have been devoted to the synthesis of polymer acceptors as alternatives to fullerene derivatives to realize high-performance and stable all-polymer solar cells (all-PSCs). So far, one of the key factors that limit the performance of all-PSCs is low photocurrent density (normally < 14 mA/cm 2 ). One potential solution is to improve the dielectric constants (ε r ) of polyme r :polymer blends, which tend to reduce the binding energy of excitons, thus boosting the exciton dissociation efficiencies. Nevertheless, the correlation between ε r and photovoltaic performance has been rarely investigated for all-PSCs. In this work, five fluorinated naphthalene diimide (NDI)-based acceptor polymers, with different content of fluorine were synthesized. The incorporation of fluorine increased the ε r of the acceptor polymers and blend films, which improved the charge generation and overall photocurrent of the all-PSCs. As a result, the PTB7-Th:PNDI-FT10 all-PSC attained a high power conversion efficiency (PCE) of 7.3% with a photocurrent density of 14.7 mA/cm 2 , which surpassed the values reported for the all-PSC based on the non-fluorinated acceptor PNDI-T10. Interestingly, similarly high photovoltaic performance was maintained regardless of a large variation of donor:acceptor ratios, which revealed the good morphological tolerance and the potential for robust production capability of all-PSCs.
Ämnesord
- 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 -- Annan kemi (hsv//swe)
- NATURAL SCIENCES -- Chemical Sciences -- Other Chemistry Topics (hsv//eng)
Nyckelord
- Acceptor polymers
- Dielectric constants
- All-polymer solar cells
- Organic photovoltaics
- Binding energy
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Till lärosätets databas
- Av författaren/redakt...
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Li, Zhaojun, 198 ...
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Xu, Xiaofeng, 19 ...
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Wang, Junke
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Lin, Baojun
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Ma, W.
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Xia, Yangjun
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visa fler...
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Andersson, Mats, ...
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Janssen, R. A. J ...
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Wang, Ergang, 19 ...
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Chalmers tekniska högskola