Benzotrithiophene polymers with tuneable bandgap for photovoltaic applications

被引：9

作者：

Bian, Linyin ^{[1
]}

Miao, Jingsheng ^{[2
]}

Hai, Jiefeng ^{[1
]}

Zhu, Enwei ^{[1
]}

Yu, Jiangsheng ^{[1
]}

Ge, Guidong ^{[1
]}

Wu, Hongbin ^{[2
]}

Tang, Weihua ^{[1
]}

机构：

[1] Nanjing Univ Sci & Technol, Minist Educ, Key Lab Soft Chem & Funct Mat, Nanjing 210094, Jiangsu, Peoples R China

[2] S China Univ Technol, State Key Lab Luminescent Mat & Devices, Inst Polymer Optoelect Mat & Devices, Guangzhou 510640, Guangdong, Peoples R China

来源：

RSC ADVANCES | 2014年 / 4卷 / 96期

基金：

中国国家自然科学基金;

关键词：

SOLAR-CELLS; CONJUGATED POLYMERS; TANDEM POLYMER; SIDE-CHAIN; COPOLYMERS; EFFICIENCY; PERFORMANCE; ELECTRON; JUNCTION; DESIGN;

D O I：

10.1039/c4ra07644c

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

Four benzotrithiophene (BTT) based donor-acceptor polymers have been prepared by alternating with diketopyrrolopyrrole (DPP), thiazolo[5,4-d] thiazole (TTz), thieno[3,4-c]pyrrole-4,6-dione (TPD) and thiadiazolo[3,4-g] quinoxaline (DTBTQx). The BTT-based polymers possess good solubility in common organic solvents and excellent thermal stability. PBTTDPP and PBTTDTBTQx possessed an optical bandgap of 1.27 eV and 1.20 eV, with absorption spectra extending to the near-infrared region. The bulk-heterojunction solar cells delivered a highest PCE of 1.39%, with a short circuit current of 5.46 mA cm(-2), an open-circuit voltage of 0.51 V and a fill factor of 0.50.

引用

收藏

页码：53939 / 53945

页数：7

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