All-polymer solar cells with over 16% efficiency and enhanced stability enabled by compatible solvent and polymer additives
Journal article, 2022
Considering the robust and stable nature of the active layers, advancing the power conversion efficiency (PCE) has long been the priority for all-polymer solar cells (all-PSCs). Despite the recent surge of PCE, the photovoltaic parameters of the state-of-the-art all-PSC still lag those of the polymer:small molecule-based devices. To compete with the counterparts, judicious modulation of the morphology and thus the device electrical properties are needed. It is difficult to improve all the parameters concurrently for the all-PSCs with advanced efficiency, and one increase is typically accompanied by the drop of the other(s). In this work, with the aids of the solvent additive (1-chloronaphthalene) and the n-type polymer additive (N2200), we can fine-tune the morphology of the active layer and demonstrate a 16.04% efficient all-PSC based on the PM6:PY-IT active layer. The grazing incidence wide-angle X-ray scattering measurements show that the shape of the crystallites can be altered, and the reshaped crystallites lead to enhanced and more balanced charge transport, reduced recombination, and suppressed energy loss, which lead to concurrently improved and device efficiency and stability.
additive
morphology
power conversion efficiency
energy loss
all-polymer solar cell
Author
Ruijie Ma
Hong Kong University of Science and Technology
Jianwei Yu
Linköping University
Tao Liu
Hong Kong University of Science and Technology
Guangye Zhang
Shenzhen Technology University
Yiqun Xiao
Chinese University of Hong Kong
Zhenghui Luo
Hong Kong University of Science and Technology
Gaoda Chai
Hong Kong University of Science and Technology
Yuzhong Chen
Hong Kong University of Science and Technology
Qunping Fan
Chalmers, Chemistry and Chemical Engineering, Applied Chemistry
Wenyan Su
Jinan University
Gang Li
Shandong Normal University
Ergang Wang
Chalmers, Chemistry and Chemical Engineering, Applied Chemistry
Xinhui Lu
Chinese University of Hong Kong
Feng Gao
Linköping University
Bo Tang
Shandong Normal University
He Yan
Hong Kong University of Science and Technology
South China University of Technology
Aggregate
2766-8541 (ISSN) 2692-4560 (eISSN)
Vol. 3 3 e58Next 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.
Subject Categories
Physical Chemistry
Other Physics Topics
Condensed Matter Physics
DOI
10.1002/agt2.58