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Correlation of Loca...
Correlation of Local Isomerization Induced Lateral and Terminal Torsions with Performance and Stability of Organic Photovoltaics
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- Fan, Baobing (författare)
- City Univ Hong Kong, Peoples R China; City Univ Hong Kong, Peoples R China
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- Gao, Wei (författare)
- City Univ Hong Kong, Peoples R China; City Univ Hong Kong, Peoples R China
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- Zhang, Rui (författare)
- Linköpings universitet,Elektroniska och fotoniska material,Tekniska fakulteten
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- Kaminsky, Werner (författare)
- Univ Washington, WA 98195 USA
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- Lin, Francis R. (författare)
- City Univ Hong Kong, Peoples R China; City Univ Hong Kong, Peoples R China
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- Xia, Xinxin (författare)
- Chinese Univ Hong Kong, Peoples R China
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- Fan, Qunping (författare)
- Xi An Jiao Tong Univ, Peoples R China
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- Li, Yanxun (författare)
- City Univ Hong Kong, Peoples R China; City Univ Hong Kong, Peoples R China
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- An, Yidan (författare)
- City Univ Hong Kong, Peoples R China; City Univ Hong Kong, Peoples R China
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- Wu, Yue (författare)
- City Univ Hong Kong, Peoples R China; City Univ Hong Kong, Peoples R China
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- Liu, Ming (författare)
- City Univ Hong Kong, Peoples R China; City Univ Hong Kong, Peoples R China
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- Lu, Xinhui (författare)
- Chinese Univ Hong Kong, Peoples R China
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- Li, Wen Jung (författare)
- City Univ Hong Kong, Peoples R China
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- Yip, Hin-Lap (författare)
- City Univ Hong Kong, Peoples R China; City Univ Hong Kong, Peoples R China
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- Gao, Feng (författare)
- Linköpings universitet,Elektroniska och fotoniska material,Tekniska fakulteten
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- Jen, Alex K. -Y. (författare)
- City Univ Hong Kong, Peoples R China; City Univ Hong Kong, Peoples R China; City Univ Hong Kong, Peoples R China; Univ Washington, WA 98195 USA
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(creator_code:org_t)
- 2023-03-06
- 2023
- Engelska.
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Ingår i: Journal of the American Chemical Society. - : AMER CHEMICAL SOC. - 0002-7863 .- 1520-5126. ; 145:10, s. 5909-5919
- Relaterad länk:
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https://urn.kb.se/re...
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https://doi.org/10.1...
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Abstract
Ämnesord
Stäng
- Organic photovoltaics (OPVs) have achieved great progress in recent years due to delicately designed non-fullerene acceptors (NFAs). Compared with tailoring of the aromatic heterocycles on the NFA backbone, the incorporation of conjugated side-groups is a cost-effective way to improve the photoelectrical properties of NFAs. However, the modifications of side-groups also need to consider their effects on device stability since the molecular planarity changes induced by side-groups are related to the NFA aggregation and the evolution of the blend morphology under stresses. Herein, a new class of NFAs with localisomerized conjugated side-groups are developed and the impact of local isomerization on their geometries and device performance/stability are systematically investigated. The device based on one of the isomers with balanced side- and terminal-group torsion angles can deliver an impressive power conversion efficiency (PCE) of 18.5%, with a low energy loss (0.528 V) and an excellent photo- and thermal stability. A similar approach can also be applied to another polymer donor to achieve an even higher PCE of 18.8%, which is among the highest efficiencies obtained for binary OPVs. This work demonstrates the effectiveness of applying local isomerization to fine-tune the side-group steric effect and non-covalent interactions between side-group and backbone, therefore improving both photovoltaic performance and stability of fused ring NFA-based OPVs.
Ämnesord
- NATURVETENSKAP -- Fysik -- Annan fysik (hsv//swe)
- NATURAL SCIENCES -- Physical Sciences -- Other Physics Topics (hsv//eng)
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Fan, Baobing
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Gao, Wei
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Zhang, Rui
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Kaminsky, Werner
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Lin, Francis R.
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Xia, Xinxin
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visa fler...
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Fan, Qunping
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Li, Yanxun
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An, Yidan
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Wu, Yue
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Liu, Ming
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Lu, Xinhui
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Li, Wen Jung
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Yip, Hin-Lap
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Gao, Feng
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Jen, Alex K. -Y.
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