Side-Chain Engineering of Non-Fullerene Acceptors with Trialkylsilyloxy Groups for Enhanced Photovoltaic Performance

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外文摘要：Side-chain engineering has emerged as a highly effective strategy for tailoring the aggregation behavior and charge transport proper-ties of non-fullerene small molecule acceptors(SMAs).In this study,we designed and synthesized two SMAs,namely BTPSi-Bu and BTPSi-Pr,respectively incorporating tributylsilyloxy and triisopropylsilyloxy groups in their outer positions.Notably,BTPSi-Bu exhibited better planarity,crystallization,and favorable phase separation when paired with PM6 donor polymer compared to its counterpart,BTPSi-Pr.The resulting organic solar cells,utilizing the PM6:BTPSi-Bu blend,demonstrated a remarkable power conversion efficiency of 17.41％and a high open-circuit voltage of 0.859 V.These findings underscore the significance of integrating trialkylsilyloxy side chains into SMAs as a rational design approach for enhancing the performance of photovoltaic systems.

外文关键词：

Organic solar cellsNon-fullerene acceptorsOligomersSide-chain engineeringEnergy conversionSynthesis designDonor-acceptor systems

作者：

Qingyuan Wang、Qi Chen、Shixin Meng、Li Tian、Haiqiao Wang、Yu Chen、Zitong Liu、Lingwei Xue、Zhi-Guo Zhang

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作者单位：

State Key Laboratory of Chemical Resource Engineering,Beijing Advanced Innovation Center for Soft Matter Science and Engineering,Beijing University of Chemical Technology,Beijing 100029,China

School of Materials Science and Engineering,Henan University of Technology,Zhengzhou,Henan 450001,China

Beijing Engineering Research Center for the Synthesis and Applications of Waterborne Polymers,Beijing University of Chemical Technology,Beijing 100029,China

The Institute of High Energy Physics,Chinese Academy of Sciences,Beijing 100049,China

State Key Laboratory of Applied Organic Chemistry(SKLAOC),College of Chemistry and Chemical Engineering,Lanzhou University,Lanzhou,Gansu 730000,China

Yaoshan Laboratory,Pingdingshan University,Pingdingshan,Henan 467000,China

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出版年：

2024

DOI：

10.1002/cjoc.202400083

中国化学(英文版)

中国化学会上海有机化学研究所

中国化学(英文版)

CSTPCD

影响因子：0.848

ISSN：1001-604X

年,卷(期)：2024.42(18)