High-Performance Non-fullerene organic solar cells enabled by noncovalent Conformational locks and Side-Chain engineering

被引：11
|
作者：
Zhang, Cai'e [1 ,2 ]
Zhang, Yaya [3 ]
Wang, Liwen [3 ]
Wu, Hongbo [5 ]
Wu, Baohua [6 ]
Tang, Zheng [5 ]
Ma, Wei [6 ]
Luo, Zhenghui [1 ]
Li, Cuihong [3 ,4 ]
Bo, Zhishan [3 ]
Yang, Chuluo [1 ]
机构：
[1] Shenzhen Univ, Coll Mat Sci & Engn, Shenzhen 518060, Peoples R China
[2] Shenzhen Univ, Coll Phys & Optoelect Engn, Shenzhen 518060, Peoples R China
[3] Beijing Normal Univ, Coll Chem, Key Lab Energy Convers & Storage Mat, Beijing 100875, Peoples R China
[4] Nankai Univ, Coll Chem, Key Lab Adv Energy Mat Chem, Minist Educ, Tianjin 300071, Peoples R China
[5] Donghua Univ, Coll Mat Sci & Engn, Ctr Adv Low dimens Mat, State Key Lab Modificat Chem Fibers & Polymer Mat, Shanghai 201620, Peoples R China
[6] Xi An Jiao Tong Univ, State Key Lab Mech Behav Mat, Xi'an 710049, Peoples R China
来源：
CHEMICAL ENGINEERING JOURNAL | 2022年 / 446卷
基金：
中国国家自然科学基金;
关键词：
Noncovalent Conformational Locks; Side-Chain Engineering; Organic solar cells; Nonfullerene acceptors; Power conversion efficiency; RING ELECTRON-ACCEPTOR;
D O I：
10.1016/j.cej.2022.137206
中图分类号：
X [环境科学、安全科学];
学科分类号：
08 ; 0830 ;
摘要：
Three novel small molecular acceptors (SMAs) BO-2F, BO-C8-2F and BO-C2C6-C8-2F were designed and synthesized. These acceptors all possess planar molecular backbone because of the introduction of intramolecular noncovalent interaction. Among them, BO-C2C6-C8-2F with four side chains, which has the highest solubility, can form more appropriate nanomorphology when blending with PBDB-T. Hence, organic solar cells (OSCs) based on PBDB-T:BO-C2C6-C8-2F displayed an outstanding power convesion efficiency (PCE) of 14.25%, which is higher than BO-2F and BO-C8-2F based ones. To the best of our knowledge, the PCE of 14.25% is one of the highest for the OSCs based on A-pi-D-pi-A type SMAs. Our results have demonstrated that the combination of sidechain engineering and intramolecular conformation lock has a great prospect in the design of high performance SMAs for OSCs.
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页数：8
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