All-polymer solar cells with over 16% efficiency and enhanced stability enabled by compatible solvent and polymer additives
Artikel i vetenskaplig tidskrift, 2021

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

Författare

Ruijie Ma

Hong Kong University of Science and Technology

Jianwei Yu

Linköpings universitet

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, Kemi och kemiteknik, Tillämpad kemi

Wenyan Su

Jinan University

Gang Li

Shandong Normal University

Ergang Wang

Chalmers, Kemi och kemiteknik, Tillämpad kemi, Ergang Wang Group

Xinhui Lu

Chinese University of Hong Kong

Feng Gao

Linköpings universitet

Bo Tang

Shandong Normal University

He Yan

Hong Kong University of Science and Technology

South China University of Technology

AGGREGATE

2692-4560 (eISSN)

Vol. In press e58

Nästa generation organiska solceller (OPV 2.0)

Vetenskapsrådet (VR) (2016-06146), 2017-01-01 -- 2022-12-31.

Vetenskapsrådet (VR) (2016-06146), 2017-01-01 -- 2022-12-31.

Vetenskapsrådet (VR) (2016-06146), 2017-01-01 -- 2022-12-31.

Ämneskategorier

Fysikalisk kemi

Annan fysik

Den kondenserade materiens fysik

DOI

10.1002/agt2.58

Mer information

Senast uppdaterat

2022-03-11