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Layer-by-Layer-Processed Ternary All-Polymer Organic Solar Cells with 17.74% Efficiency Enabled by Introducing a Designed Narrow-Bandgap Guest Polymer Acceptorстатья Исследовательская статья
Статья опубликована в высокорейтинговом журнале
Статья опубликована в журнале из списка Web of Science и/или Scopus- Авторы: Wu Xiaohei, Yang Xinrong, Shao Yimin, Gao Yuan, Wan Ji, Ponomarenko Sergey, Luponosov Yuriy, Sun Rui, Min Jie
- Журнал: Solar RRL
- Год издания: 2023
- Издательство: John Wiley
- Местоположение издательства: Hoboken, N.J., United States
- DOI: 10.1002/solr.202300064
- Аннотация: Obtaining an admirably modified vertical phase separation of the active layer for all-polymer solar cells (all-PSCs) to facilitate charge generation, charge transfer and transport properties is a prerequisite for achieving high performance. Herein, we finely manipulate the active layer of all-PSCs by combining a ternary blend strategy with a layer-by-layer (LbL) process. Based on the LbL-processed PM6/PYT-1S1Se host binary all-PSCs, we designed and introduced a chlorinated polymer acceptor PYT-1S1Se-4Cl into the host system for rationally controlling blend morphology with ordered molecular stacking and suitable vertical distribution. The optimized bulk microstructure of the ternary system is not only beneficial to the charge generation and charge transport properties, but also can significantly reduce the non-radiative energy loss that occurs in the LbL-type ternary blend. Thus, the LbL-type PM6/(PYT-1S1Se:PYT-1S1Se-4Cl) ternary all-PSCs exhibit a promising power conversion efficiency (PCE) of 17.74%, which is higher than the corresponding binary systems (PCE = 16.86% for PM6/PYT-1S1Se and PCE = 15.83% for PM6/PYT-1S1Se-4Cl, indicating the special merits of material design and processing technology. Overall, this work demonstrates a promising combinatorial method for the morphological regulation of all-polymer systems that contributes to enhanced efficiency.This work was financially supported by the National Natural Science Foundation of China (NSFC) (grant nos. 52061135206 and 22279094) and the Fundamental Research Funds for the Central Universities. Y.L.and S.P. thank the Russian Science Foundation for financial support (grant 21-00051-43). GIWAXS data were acquired at the Shanghai SynchrotronRadiation Facility, supported by beamline BL14B1. We thank Dr. Ying Zhang from the Core Facility of Wuhan University for the TOF-SIMS measurement.
- Добавил в систему: Лупоносов Юрий Николаевич
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