High-performance fullerene-free polymer solar cells with 6.31% efficiency

被引：603

作者：

Lin, Yuze ^{[1
,3
]}

Zhang, Zhi-Guo ^{[1
]}

Bai, Huitao ^{[1
]}

Wang, Jiayu ^{[2
]}

Yao, Yuehan ^{[2
]}

Li, Yongfang ^{[1
]}

Zhu, Daoben ^{[1
]}

Zhan, Xiaowei ^{[2
]}

机构：

[1] Chinese Acad Sci, Beijing Natl Lab Mol Sci, Inst Chem, CAS Key Lab Organ Solids, Beijing 100190, Peoples R China

[2] Peking Univ, Coll Engn, Dept Mat Sci & Engn, Beijing 100871, Peoples R China

[3] Univ Chinese Acad Sci, Beijing 100049, Peoples R China

来源：

ENERGY & ENVIRONMENTAL SCIENCE | 2015年 / 8卷 / 02期

基金：

中国国家自然科学基金;

关键词：

SMALL-MOLECULE; ELECTRON-ACCEPTOR; TRANSPORT; CATHODE; DESIGN;

D O I：

10.1039/c4ee03424d

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

A nonfullerene electron acceptor (IEIC) based on indaceno[1,2-b:5,6-b']dithiophene and 2-(3-oxo-2,3-dihydroinden-1-ylidene)malononitrile was designed and synthesized. IEIC exhibited good thermal stability, strong absorption in the 500-750 nm region with an extinction coefficient of 1.1 x 10(5) M-1 cm(-1) at 672 nm, deep LUMO energy level (-3.82 eV) close to those of fullerenes, and a relatively high electron mobility of 2.1 x 10(-4) cm(2) V-1 s(-1). Fullerene-free polymer solar cells (PSCs) based on the blends of the IEIC acceptor and a low-bandgap polymer donor PTB7-TH, using a perylene diimide derivative as a cathode interlayer, showed power conversion efficiencies (PCEs) of up to 6.31%, which is among the best PCEs reported for fullerene-free PSCs.

引用

页码：610 / 616

页数：7

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