On the Conformation of Dimeric Acceptors and Their Polymer Solar Cells with Efficiency over 18 %
Journal article, 2023
The determination of molecular conformations of oligomeric acceptors (OAs) and their impact on molecular packing are crucial for understanding the photovoltaic performance of their resulting polymer solar cells (PSCs) but have not been well studied yet. Herein, we synthesized two dimeric acceptor materials, DIBP3F-Se and DIBP3F-S, which bridged two segments of Y6-derivatives by selenophene and thiophene, respectively. Theoretical simulation and experimental 1D and 2D NMR spectroscopic studies prove that both dimers exhibit O-shaped conformations other than S- or U-shaped counter-ones. Notably, this O-shaped conformation is likely governed by a distinctive “conformational lock” mechanism, arising from the intensified intramolecular π–π interactions among their two terminal groups within the dimers. PSCs based on DIBP3F-Se deliver a maximum efficiency of 18.09 %, outperforming DIBP3F-S-based cells (16.11 %) and ranking among the highest efficiencies for OA-based PSCs. This work demonstrates a facile method to obtain OA conformations and highlights the potential of dimeric acceptors for high-performance PSCs.
Oligomer
Acceptor
Molecular Conformation
Solar Cells
Selenophene
Author
Jingnan Wu
Chalmers, Chemistry and Chemical Engineering, Applied Chemistry
Aalborg University
Zhaoheng Ling
King Abdullah University of Science and Technology (KAUST)
Leandro Rezende Franco
Karlstad University
Sang Young Jeong
Korea University
Zewdneh Genene Wolkeba
Chalmers, Chemistry and Chemical Engineering, Applied Chemistry
Josué Mena Gomez
Chalmers, Chemistry and Chemical Engineering, Applied Chemistry
Si Chen
King Abdullah University of Science and Technology (KAUST)
Cailing Chen
King Abdullah University of Science and Technology (KAUST)
C. Moyses Araujo
Karlstad University
Uppsala University
Cleber F.N. Marchiori
Karlstad University
Joost Kimpel
Chalmers, Chemistry and Chemical Engineering, Applied Chemistry
Xiaoming Chang
King Abdullah University of Science and Technology (KAUST)
Furkan H. Isikgor
King Abdullah University of Science and Technology (KAUST)
Qiaonan Chen
Chalmers, Chemistry and Chemical Engineering, Applied Chemistry
Hendrik Faber
King Abdullah University of Science and Technology (KAUST)
Yu Han
King Abdullah University of Science and Technology (KAUST)
Frédéric Laquai
King Abdullah University of Science and Technology (KAUST)
Maojie Zhang
Shandong University
Han Young Woo
Korea University
Donghong Yu
Aalborg University
Thomas D. Anthopoulos
King Abdullah University of Science and Technology (KAUST)
Ergang Wang
Chalmers, Chemistry and Chemical Engineering, Applied Chemistry
Angewandte Chemie - International Edition
1433-7851 (ISSN) 1521-3773 (eISSN)
Vol. 62 45 e202302888Next Generation Organic Solar Cells (OPV 2.0)
Swedish Research Council (VR) (2016-06146), 2017-01-01 -- 2022-12-31.
Swedish Research Council (VR) (2016-06146), 2017-01-01 -- 2022-12-31.
Swedish Research Council (VR) (2016-06146), 2017-01-01 -- 2022-12-31.
Alkyl chain linked conjugated polymers for stable polymer solar cells
Swedish Research Council (VR) (2019-04683), 2020-01-01 -- 2023-12-31.
Subject Categories (SSIF 2011)
Polymer Chemistry
Biochemistry and Molecular Biology
Biophysics
Organic Chemistry
DOI
10.1002/anie.202302888
PubMed
37380618