Over 18% ternary polymer solar cells enabled by a terpolymer as the third component
Journal article, 2022
“Ternary blending” and “random terpolymerization” strategies have both proven effective for enhancing the performance of organic solar cells (OSCs). However, reports on the combination of the two strategies remain rare. Here, a terpolymer PM6-Si30 was constructed by inserting chlorine and alkylsilyl-substituted benzodithiophene (BDT) unit (0.3 equivalent) into the state-of-the-art polymer PM6. The terpolymer exhibitsadeep highest-occupied-molecular-orbital energy and good miscibility with both PM6 and BTP-eC9 (C9) and enables its use as a third component into PM6:PM6-Si30:C9 bulk-heterojunction for OSCs. The resulting cells exhibit maximum power conversion efficiency (PCE) of 18.27%, which is higher than that obtained for the optimized control binary PM6:C9-based OSC (17.38%). The enhanced performance of the PM6:PM6-Si30:C9 cells is attributed to improved charge transport, favorable molecular arrangement, reduced energy loss and suppressed bimolecular recombination. The work demonstrates the potential of random terpolymer as a third component in OSCs and highlights a new strategy for the construction of a ternary system with improved photovoltaic performance.
Conjugated polymers
Terpolymer donor
Compatible
Ternary organic solar cells
High efficiency
Author
Wenhong Peng
Chalmers, Chemistry and Chemical Engineering, Applied Chemistry
Hunan Institute of Engineering
Changzhou University
Y. B. Lin
King Abdullah University of Science and Technology (KAUST)
Sang Young Jeong
Korea University
Zewdneh Genene Wolkeba
Chalmers, Chemistry and Chemical Engineering, Applied Chemistry
Artiom Magomedov
Kaunas University of Technology
Han Young Woo
Korea University
Cailing Chen
King Abdullah University of Science and Technology (KAUST)
Wandi Wahyudi
King Abdullah University of Science and Technology (KAUST)
Qiang Tao
Hunan Institute of Engineering
Jiyong Deng
Hunan Institute of Engineering
Yu Han
King Abdullah University of Science and Technology (KAUST)
Vytautas Getautis
Kaunas University of Technology
W. G. Zhu
Changzhou University
Thomas D. Anthopoulos
King Abdullah University of Science and Technology (KAUST)
Ergang Wang
Chalmers, Chemistry and Chemical Engineering, Applied Chemistry
Zhengzhou University
Nano Energy
2211-2855 (ISSN)
Vol. 92 106681Alkyl chain linked conjugated polymers for stable polymer solar cells
Swedish Research Council (VR) (2019-04683), 2020-01-01 -- 2023-12-31.
Subject Categories
Energy Engineering
Other Chemistry Topics
Energy Systems
DOI
10.1016/j.nanoen.2021.106681