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 106681

Alkyl 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

More information

Latest update

12/2/2021