Efficient polymer solar cells based on a new benzo[1,2-b:4,5-b′]dithiophene derivative with fluorinated alkoxyphenyl side chain

被引：42

作者：

Chen, Weichao ^{[1
]}

Du, Zhengkun ^{[1
]}

Han, Liangliang ^{[1
]}

Xiao, Manjun ^{[1
]}

Shen, Wenfei ^{[1
]}

Wang, Ting ^{[1
]}

Zhou, Yuanhang ^{[1
]}

Yang, Renqiang ^{[1
,2
]}

机构：

[1] Chinese Acad Sci, Qingdao Inst Bioenergy & Bioproc Technol, CAS Key Lab Biobased Mat, Qingdao 266101, Peoples R China

[2] S China Univ Technol, State Key Lab Luminescent Mat & Devices, Guangzhou 510641, Guangdong, Peoples R China

来源：

JOURNAL OF MATERIALS CHEMISTRY A | 2015年 / 3卷 / 06期

基金：

中国国家自然科学基金;

关键词：

POWER CONVERSION EFFICIENCY; MOLECULAR-ENERGY LEVEL; CONJUGATED POLYMERS; PHOTOVOLTAIC PERFORMANCE; DESIGN; DONOR; BENZOTHIADIAZOLE; BENZODITHIOPHENE; AGGREGATION; MORPHOLOGY;

D O I：

10.1039/c4ta06350c

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

A novel fluorine-containing benzo[1,2-b:4,5-b']dithiophene (BDT) derivative (BDTPF) was designed to construct a donor-acceptor (D-A)-structured polymer (PBDTPF-DTBT) with the electron-withdrawing unit 4,7-di(4-(2-ethylhexyl)-2-thienyl)-2,1,3-benzothiadiazole (DTBT). The resulting polymer exhibits a broad absorption spectrum, relatively low lying HOMO energy level (-5.39 eV) and a good film-forming ability. The field-effect mobility of PBDTPF-DTBT is 0.034 cm(2) V-1 s(-1). Bulk heterojunction organic solar cells (OSCs) based on PBDTPF-DTBT and PC71BM were prepared and showed a good photovoltaic performance with power conversion efficiency (PCE) of 7.02%. This work demonstrates that a BDT unit with fluorinated alkoxyphenyl side chains is a promising candidate as an electron-rich building block for high performance solution-processed OSCs.

引用

页码：3130 / 3135

页数：6

共 47 条

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2-W

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