Synthesis and photovoltaic properties of new conjugated polymers based on syn- and anti-benzodifuran

被引：31

作者：

Hu, Chao ^{[1
]}

Fu, Yingying ^{[2
]}

Li, Shugang ^{[1
]}

Xie, Zhiyuan ^{[2
]}

Zhang, Qing ^{[1
]}

机构：

[1] Shanghai Jiao Tong Univ, Sch Chem & Chem Engn, Dept Polymer Sci & Engn, Shanghai 200240, Peoples R China

[2] Chinese Acad Sci, Changchun Inst Appl Chem, State Key Lab Polymer Phys & Chem, Changchun 130022, Peoples R China

来源：

POLYMER CHEMISTRY | 2012年 / 3卷 / 10期

基金：

中国国家自然科学基金;

关键词：

HETEROJUNCTION SOLAR-CELLS; DONOR; BANDGAP; DESIGN; DERIVATIVES; FURAN; UNIT;

D O I：

10.1039/c2py20504a

中图分类号：

O63 [高分子化学（高聚物）];

学科分类号：

070305 ; 080501 ; 081704 ;

摘要：

Donor-acceptor conjugated polymers based on benzo[1,2-b:5,4-b']difuran (syn-BDF) or benzo[1,2-b:5,4-b']difuran (anti-BDF) as donors and isoindigo as acceptors were synthesized by Stille cross-coupling reaction. The effects of syn- and anti-repeating units on optical, electrochemical and photovoltaic properties of polymers were investigated. The anti-PBDFID displayed lower optical bandgap and higher HOMO energy level than syn-PBDFID. The syn-PBDFID had better solubility than anti-PBDFID. The energy levels of two new polymers were compared with some related benzo[1,2-b:4,5-b']dithiophenes (BDTs) based polymers. The results suggested that the utilization of less conjugated repeating units such as syn-BDF and the elimination of electron donating groups on the central phenyl ring of BDF can effectively lower the HOMO energy level of polymer. The low HOMO energy level of syn-PBDFID enabled high open circuit voltages in PSC devices.

引用

页码：2949 / 2955

页数：7

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