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.

引用

页数：8

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