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Ferroelectric Polymer Drives Performance Enhancement of Non-fullerene Organic Solar Cells

Authors
Deng, JiaweiHuang, BinLi, WenhaoZhang, LifuJeong, Sang YoungHuang, ShaorongZhang, ShijingWu, FeiyanXu, XiaoliZou, GuifuWoo, Han YoungChen, YiwangChen, Lie
Issue Date
6월-2022
Publisher
WILEY-V C H VERLAG GMBH
Keywords
Ferroelectric Polymer; Non-Fullerene; Organic Electronics; Solar Cells
Citation
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION, v.61, no.25
Indexed
SCIE
SCOPUS
Journal Title
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
Volume
61
Number
25
URI
https://scholar.korea.ac.kr/handle/2021.sw.korea/143210
DOI
10.1002/anie.202202177
ISSN
1433-7851
Abstract
Enhancing the built-in electric field to promote charge dynamitic process is of great significance to boost the performance of the non-fullerene organic solar cells (OSCs), which has rarely been concerned. In this work, we introduced a cheap ferroelectric polymer as an additive into the active layers of non-fullerene OSCs to improve the device performance. An additional and permanent electrical field was produced by the polarization of the ferroelectric dipoles, which can substantially enhance the built-in electric field. The promoted exciton separation, significantly accelerated charge transport, reduced the charge recombination, as well as the optimized film morphology were observed in the device, leading to a significantly improved performance of the PVDF-modified OSCs with various active layers, such as PM6 : Y6, PM6 : BTP-eC9, PM6 : IT-4F and PTB7-Th : Y6. Especially, a record efficiency of 17.72 % for PM6 : Y6-based OSC and an outstanding efficiency of 18.17 % for PM6 : BTP-eC9-based OSC were achieved.
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