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 e58

Next 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

More information

Latest update

4/2/2024 1