Efficient ternary organic solar cells with suppressed nonradiative recombination via B‒N based polymer donor
Shuting Pang,
Wanyuan Deng,
Langheng Pan,
Xinyuan Liu,
Zhibang Shen,
Hongxiang Li,
Pei Cheng,
Jiayuan Zhu,
Wensheng Yan,
Chunhui Duan
Affiliations
Shuting Pang
Institute of Carbon Neutrality and New Energy, School of Electronics and Information Engineering, Hangzhou Dianzi University, Hangzhou 310018, China; Corresponding author
Wanyuan Deng
Institute of Polymer Optoelectronic Materials and Devices, State Key Laboratory of Luminescent Materials and Devices, South China University of Technology, Guangzhou 510640, China
Langheng Pan
Institute of Polymer Optoelectronic Materials and Devices, State Key Laboratory of Luminescent Materials and Devices, South China University of Technology, Guangzhou 510640, China
Xinyuan Liu
Institute of Polymer Optoelectronic Materials and Devices, State Key Laboratory of Luminescent Materials and Devices, South China University of Technology, Guangzhou 510640, China
Zhibang Shen
Institute of High Energy Physics, Chinese Academy of Sciences, Beijing 100049, P.R. China
Hongxiang Li
College of Polymer Science and Engineering, State Key Laboratory of Polymer Materials Engineering, Sichuan University, Chengdu 610065, China
Pei Cheng
College of Polymer Science and Engineering, State Key Laboratory of Polymer Materials Engineering, Sichuan University, Chengdu 610065, China
Jiayuan Zhu
College of Polymer Science and Engineering, State Key Laboratory of Polymer Materials Engineering, Sichuan University, Chengdu 610065, China
Wensheng Yan
Institute of Carbon Neutrality and New Energy, School of Electronics and Information Engineering, Hangzhou Dianzi University, Hangzhou 310018, China; Corresponding author
Chunhui Duan
Institute of Polymer Optoelectronic Materials and Devices, State Key Laboratory of Luminescent Materials and Devices, South China University of Technology, Guangzhou 510640, China; Corresponding author
Summary: Organic solar cells (OSCs) have developed rapidly in recent years. However, the energy loss (Eloss) remains a major obstacle to further improving the photovoltaic performance. To address this issue, a ternary strategy has been employed to precisely tune the Eloss and boost the efficiency of OSCs. The B‒N-based polymer donor has been proved to process high E(T1) and small ΔEST characters, which can inhibition of CT state recombination. Herin, B‒N-based polymer donor PBNT-BDD was incorporated into the state-of-the-art PM6:L8-BO binary to construct ternary OSCs. Together with the optimal morphology, the ternary device affords an impressive power conversion efficiency of 18.95% with an improved open-circuit voltage (Voc), short-circuit density (Jsc), and reduced Eloss in comparison to the binary ones, which is the highest PCE for B‒N materials-based ternary device. This work broadens the selection of guest materials toward realizing the high performance of OSCs.
