A twisted monomeric perylenediimide electron acceptor for efficient organic solar cells

被引：13

作者：

Cai, Yunhao ^{[1
]}

Guo, Xieyou ^{[1
]}

Sun, Xiaobo ^{[1
]}

Wei, Donghui ^{[2
]}

Yu, Mingming ^{[2
]}

Huo, Lijun ^{[1
]}

Sun, Yanming ^{[1
]}

机构：

[1] Beihang Univ, Sch Chem & Environm, Heeger Beijing Res & Dev Ctr, Beijing 100191, Peoples R China

[2] Zhengzhou Univ, Coll Chem & Mol Engn, Zhengzhou 450001, Peoples R China

来源：

SCIENCE CHINA-MATERIALS | 2016年 / 59卷 / 06期

基金：

中国国家自然科学基金;

关键词：

organic solar cells; non-fullerene electron acceptors; perylene diimide; monomer; NON-FULLERENE-ACCEPTOR; SMALL-MOLECULE; POLYMER; DIIMIDE; PERFORMANCE; PHOTOVOLTAICS; ABSORPTION; TRANSPORT; DYES; SIZE;

D O I：

10.1007/s40843-016-5063-3

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Perylenediimide (PDI)-based materials exhibit great potential as non-fullerene acceptors in bulk-heterojunction (BHJ) organic solar cells (OSCs). Recent investigations have revealed that PDI molecules with a twisted structure could disrupt aggregation of perylene unit. Here, we present a PDI monomer via bay-substitutions with four fused naphthalene units by three-step reactions, named TN-PDI. The introduction of four fused naphthalene rings into the bay positions of PDI unit leads to a strong steric hindrance with a twist angle of 33 degrees between the two PDI subplanes. Blended with a wide-band gap polymer donor (PDBT-T1), the TN-PDI based non-fullerene solar cells show power conversion efficiency (PCE) of 3.0%. Our results indicate that the bay-substitutions with fused aromatic substitutions could be an efficient approach to develop monomeric PDI acceptors.

引用

页码：427 / 434

页数：8

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