1. Precisely Manipulating Molecular Packing via Tuning Alkyl Side‐Chain Topology Enabling High‐Performance Nonfused‐Ring Electron Acceptors.
- Author
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Han, Ziyang, Zhang, Cai'e, He, Tengfei, Gao, Jinhua, Hou, Yuqi, Gu, Xiaobin, Lv, Jikai, Yu, Na, Qiao, Jiawei, Wang, Sixuan, Li, Congqi, Zhang, Jianqi, Wei, Zhixiang, Peng, Qian, Tang, Zheng, Hao, Xiaotao, Long, Guankui, Cai, Yunhao, Zhang, Xin, and Huang, Hui
- Subjects
ELECTROPHILES ,SOLAR cells ,ORGANIC semiconductors ,ELECTRON mobility ,TOPOLOGY - Abstract
In the development of high‐performance organic solar cells (OSCs), the self‐organization of organic semiconductors plays a crucial role. This study focuses on the precisely manipulation of molecular assemble via tuning alkyl side‐chain topology in a series of low‐cost nonfused‐ring electron acceptors (NFREAs). Among the three NFREAs investigated, DPA‐4, which possesses an asymmetric alkyl side‐chain length, exhibits a tight packing in the crystal and high crystallinity in the film, contributing to improved electron mobility and favorable film morphology for DPA‐4. As a result, the OSC device based on DPA‐4 achieves an excellent power conversion efficiency of 16.67 %, ranking among the highest efficiencies for NFREA‐based OSCs. [ABSTRACT FROM AUTHOR]
- Published
- 2024
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