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Side-Chain Engineering for Enhancing the Molecular Rigidity and Photovoltaic Performance of Noncovalently Fused-Ring Electron Acceptors

Zhang, Xin (författare)
Univ Chinese Acad Sci, Peoples R China; Univ Chinese Acad Sci, Peoples R China; Univ Chinese Acad Sci, Peoples R China; Univ Chinese Acad Sci, Peoples R China
Li, Congqi (författare)
Univ Chinese Acad Sci, Peoples R China; Univ Chinese Acad Sci, Peoples R China; Univ Chinese Acad Sci, Peoples R China; Univ Chinese Acad Sci, Peoples R China
Qin, Linqing (författare)
Univ Chinese Acad Sci, Peoples R China; Univ Chinese Acad Sci, Peoples R China; Univ Chinese Acad Sci, Peoples R China; Univ Chinese Acad Sci, Peoples R China
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Chen, Hao (författare)
Univ Chinese Acad Sci, Peoples R China; Univ Chinese Acad Sci, Peoples R China; Univ Chinese Acad Sci, Peoples R China; Univ Chinese Acad Sci, Peoples R China
Yu, Jianwei (författare)
Linköpings universitet,Elektroniska och fotoniska material,Tekniska fakulteten
Wei, Yanan (författare)
Univ Chinese Acad Sci, Peoples R China; Univ Chinese Acad Sci, Peoples R China; Univ Chinese Acad Sci, Peoples R China; Univ Chinese Acad Sci, Peoples R China
Liu, Xingzheng (författare)
Univ Chinese Acad Sci, Peoples R China; Univ Chinese Acad Sci, Peoples R China; Univ Chinese Acad Sci, Peoples R China; Univ Chinese Acad Sci, Peoples R China
Zhang, Jianqi (författare)
Ctr Excellence Nanosci CAS, Peoples R China; Natl Ctr Nanosci & Technol, Peoples R China
Wei, Zhixiang (författare)
Ctr Excellence Nanosci CAS, Peoples R China; Natl Ctr Nanosci & Technol, Peoples R China
Gao, Feng (författare)
Linköpings universitet,Elektroniska och fotoniska material,Tekniska fakulteten
Peng, Qian (författare)
Univ Chinese Acad Sci, Peoples R China
Huang, Hui (författare)
Univ Chinese Acad Sci, Peoples R China; Univ Chinese Acad Sci, Peoples R China; Univ Chinese Acad Sci, Peoples R China; Univ Chinese Acad Sci, Peoples R China
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 (creator_code:org_t)
2021-06-30
2021
Engelska.
Ingår i: Angewandte Chemie International Edition. - : WILEY-V C H VERLAG GMBH. - 1433-7851 .- 1521-3773. ; 60:32, s. 17720-17725
Relaterad länk:
https://urn.kb.se/re...
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https://doi.org/10.1...
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  • Tidskriftsartikel (refereegranskat)
Abstract Ämnesord
Stäng  
  • Side-chain engineering is an effective strategy to regulate the solubility and packing behavior of organic materials. Recently, a unique strategy, so-called terminal side-chain (T-SC) engineering, has attracted much attention in the field of organic solar cells (OSCs), but there is a lack of deep understanding of the mechanism. Herein, a new noncovalently fused-ring electron acceptor (NFREA) containing two T-SCs (NoCA-5) was designed and synthesized. Introduction of T-SCs can enhance molecular rigidity and intermolecular pi-pi stacking, which is confirmed by the smaller Stokes shift value, lower reorganization free energy, and shorter pi-pi stacking distance in comparison to NoCA-1. Hence, the NoCA-5-based device exhibits a record power conversion efficiency (PCE) of 14.82 % in labs and a certified PCE of 14.5 %, resulting from a high electron mobility, a short charge-extraction time, a small Urbach energy (E-u), and a favorable phase separation.

Ämnesord

NATURVETENSKAP  -- Kemi -- Annan kemi (hsv//swe)
NATURAL SCIENCES  -- Chemical Sciences -- Other Chemistry Topics (hsv//eng)

Nyckelord

molecular rigidity; noncovalently fused-ring electron acceptors; organic solar cells; terminal side chains

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