Realizing over 10% efficiency in polymer solar cell by device optimization

被引：322

作者：

Zhang, Shaoqing ^{[1
,2
]}

Ye, Long ^{[1
]}

Zhao, Wenchao ^{[1
]}

Yang, Bei ^{[1
]}

Wang, Qi ^{[1
,2
]}

Hou, Jianhui ^{[1
,2
]}

机构：

[1] Chinese Acad Sci, Beijing Natl Lab Mol Sci, Inst Chem, State Key Lab Polymer Phys & Chem, Beijing 100190, Peoples R China

[2] Univ Sci & Technol Beijing, Sch Chem & Biol Engn, Beijing 100083, Peoples R China

来源：

SCIENCE CHINA-CHEMISTRY | 2015年 / 58卷 / 02期

基金：

中国国家自然科学基金;

关键词：

polymer solar cells; photovoltaic polymer; device optimization; solvent additives; POWER CONVERSION EFFICIENCY; PHOTOVOLTAIC POLYMERS; CONJUGATED POLYMERS; PERFORMANCE; MORPHOLOGY; ADDITIVES; CATHODE; DESIGN;

D O I：

10.1007/s11426-014-5273-x

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

The low band gap polymer based on benzodithiophene (BDT)-thieno[3,4-b]thiophene (TT) backbone, PBDT-TS1, was synthesized following our previous work and the bulk heterojunction (BHJ) material comprising PBDT-TS1/PC71BM was optimized and characterized. By processing the active layer with different additives i.e. 1,8-diiodooctane (DIO), 1-chloronaphthalene (CN) and 1, 8-octanedithiol (ODT) and optimizing the ratio of each additive in the host solvent, a high PCE of 9.98% was obtained under the condition of utilizing 3% DIO as processing additive in CB. The effect of varied additives on photovoltaic performance was illustrated with atomic force microscopy (AFM) and transmission electron microscope (TEM) measurements that explained changes in photovoltaic parameters. These results provide valuable information of solvent additive choice in device optimization of PBDTTT polymers, and the systematic device optimization could be applied in other efficient photovoltaic polymers. Apparently, this work presents a great advance in single junction PSCs, especially in PSCs with conventional architecture.

引用

页码：248 / 256

页数：9

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