个人信息Personal Information
副教授
博士生导师
硕士生导师
性别:男
毕业院校:中科院长春应用化学研究所
学位:博士
所在单位:化工学院
办公地点:大连理工大学西部校区精细化工国家重点实验室
联系方式:0411-84986251
电子邮箱:lcchen@dlut.edu.cn
Oxygen-ether-bridged perylene diimide dimers: Efficient synthesis, properties, and photovoltaic performance
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论文类型:期刊论文
发表时间:2021-01-07
发表刊物:DYES AND PIGMENTS
卷号:180
ISSN号:0143-7208
关键字:Perylene diimide; Non-conjugation; Oxygen-ether-bridge; Electron acceptor; Organic solar cell
摘要:The research of non-conjugated organic semiconductor materials with excellent photoelectric properties can promote the development of new materials in the field of material science. Herein, we developed three new oxygen-ether-bridged perylene diimide (PDI) dimers, namely bo-2PDI, oo-2PDI, and bb-2PDI, which were synthesized by coupling reactions with a moderate yield. Owing to the different ether-bridged positions, three PDI dimers exhibit different photophysical and electrochemical properties. Thus, three PDI dimers show strong absorption from 400 to 600 nm, suitable energy levels, and high electron mobilities, which implies that three PDI dimers can be used as the electron acceptors for non-fullerene organic solar cells (OSC). By using PTB7-Th as the donor and three PDI dimers to fabricate the inverted OSCs, the optimal power conversion efficiency (PCE) of 3.06% was obtained for the bb-2PDI-based OSC without any additive. This PCE value was higher than those of bo2PDI (1.47%) and oo-2PDI (1.24%). Our advances show that oxygen-ether-bridged PDI dimers are promising high-efficiency electron acceptors for non-fullerene OSCs.