Electronic Configuration Tuning of Centrally Extended Non‐Fullerene Acceptors Enabling Organic Solar Cells with Efficiency Approaching 19 %

Electronic Configuration Tuning of Centrally Extended Non‐Fullerene Acceptors Enabling Organic Solar Cells with Efficiency Approaching 19 % Full article

Journal

Angewandte Chemie International Edition
ISSN: 1433-7851 , E-ISSN: 1521-3773

Output data

Year: 2023, Volume: 62, Number: 42, Article number : e202308832, Pages count : DOI: 10.1002/anie.202308832

Authors

Duan Tainan ^1,2 , Feng Wanying ³ , Li Yulu ⁴ , Li Zhixiang ³ , Zhang Zhe ³ , Liang Huazhe ³ , Chen Hongbin ⁵ , Zhong Cheng ⁶ , Jeong Seonghun ⁷ , Yang Changduk ⁷ , Chen Shanshan ⁸ , Lu Shirong ⁴ , Rakitin Oleg A. ⁹ , Li Chenxi ⁵ , Wan Xiangjian ⁵ , Kan Bin ¹⁰ , Chen Yongsheng ¹¹

Affiliations

1	Chongqing Institute of Green and Intelligent Technology Chongqing School, University of Chinese Academy of Sciences (UCAS Chongqing) Chinese Academy of Sciences Chongqing 400714 China
2	State Key Laboratory and Institute of Elemento-Organic Chemistry The Centre of Nanoscale Science and Technology and Key Laboratory of Functional Polymer Materials Renewable Energy Conversion and Storage Center (RECAST) College of Chemistry Nankai University Tianjin 300071 China
3	Nankai University, chemistry, CHINA
4	Chongqing Institute of Green and Intelligent Technology Chongqing School, University of Chinese Academy of Sciences (UCAS Chongqing) Chinese Academy of Sciences Chongqing 400714 China
5	Nankai University, Chemistry, CHINA
6	Hubei Key Laboratory on Organic and Polymeric Opto-electronic Materials, College of Chemistry and Molecular Sciences, Wuhan University, Wuhan, 430072 China
7	Ulsan National Institute of Science and Technology, Perovtronics Research Center, KOREA, REPUBLIC OF
8	Chongqing University Energy & Power Engineering CHINA
9	Zelinsky Institute of Organic Chemistry RAS: FGBUN Institut organiceskoj himii imeni N D Zelinskogo Rossijskoj akademii nauk, chemistry, RUSSIAN FEDERATION
10	School of Materials Science and Engineering, National Institute for Advanced Materials, Nankai University, Tianjin, 300350 China
11	Nankai University, Institute of Polymer Chemistry,College of Chemistry, Weijin Rd 94, 300071 Tianjin, CHINA

In the molecular optimizations of non-fullerene acceptors (NFAs), extending the central core can tune the energy levels, reduce nonradiative energy loss, enhance the intramolecular (donor-acceptor and acceptor-acceptor) packing, facilitate the charge transport, and improve device performance. In this study, a new strategy was employed to synthesize acceptors featuring conjugation-extended electron-deficient cores. Among these, the acceptor CH-BBQ, embedded with benzobisthiadiazole, exhibited an optimal fibrillar network morphology, enhanced crystallinity, and improved charge generation/transport in blend films, leading to a power conversion efficiency of 18.94 % for CH-BBQ-based ternary organic solar cells (OSCs; 18.19 % for binary OSCs) owing to its delicate structure design and electronic configuration tuning. Both experimental and theoretical approaches were used to systematically investigate the influence of the central electron-deficient core on the properties of the acceptor and device performance. The electron-deficient core modulation paves a new pathway in the molecular engineering of NFAs, propelling relevant research forward.

Duan T. , Feng W. , Li Y. , Li Z. , Zhang Z. , Liang H. , Chen H. , Zhong C. , Jeong S. , Yang C. , Chen S. , Lu S. , Rakitin O.A. , Li C. , Wan X. , Kan B. , Chen Y.
Electronic Configuration Tuning of Centrally Extended Non‐Fullerene Acceptors Enabling Organic Solar Cells with Efficiency Approaching 19 %
Angewandte Chemie International Edition. 2023. V.62. N42. e202308832 . DOI: 10.1002/anie.202308832 WOS Scopus OpenAlex

Web of science:	WOS:001060400300001
Scopus:	2-s2.0-85170057584
OpenAlex:	W4386188337

DB	Citing
OpenAlex	88
Scopus	76
Web of science	84