Efficient small molecule bulk heterojunction solar cells with high fill factors via introduction of π-stacking moieties as end group

被引：98

作者：

He, Guangrui ^{[1
,2
]}

Li, Zhi ^{[1
,2
]}

Wan, Xiangjian ^{[1
,2
]}

Zhou, Jiaoyan ^{[1
,2
]}

Long, Guankui ^{[1
,2
]}

Zhang, Shuzhong ^{[3
]}

Zhang, Mingtao ^{[4
]}

Chen, Yongsheng ^{[1
,2
]}

机构：

[1] Nankai Univ, Coll Chem, Key Lab Funct Polymer Mat, Tianjin 300071, Peoples R China

[2] Nankai Univ, Coll Chem, Inst Polymer Chem, Ctr Nanoscale Sci & Technol, Tianjin 300071, Peoples R China

[3] Nankai Univ, State Key Lab Elementoogran Chem, Tianjin 300071, Peoples R China

[4] Nankai Univ, Computat Ctr Mol Sci, Tianjin 300071, Peoples R China

来源：

JOURNAL OF MATERIALS CHEMISTRY A | 2013年 / 1卷 / 05期

关键词：

PROCESSED SMALL-MOLECULE; POWER-CONVERSION EFFICIENCY; ORGANIC PHOTOVOLTAIC CELLS; OPEN-CIRCUIT VOLTAGE; POLYMER; PERFORMANCE; MORPHOLOGY; SEMICONDUCTORS; GENERATION;

D O I：

10.1039/c2ta00496h

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：

Three new oligothiophene derivatives with an acceptor-donor-acceptor structure incorporating 1,3-indanedione or the derivative of 1,3-indanedione units as the terminal acceptor groups-DIN7T, DINCN7T and DDIN7T-have been designed and synthesized for solution-processable small molecule BHJ solar cells. The impacts of these different end dye moieties on the optical absorption, solubility, electrochemical properties, morphology, mobility and solar cell performance were studied. All three compounds exhibit broad and highly efficient solar absorption with a low bandgap. The DIN7T-based BHJ solar cell device achieved a PCE of 4.93% and a high fill factor of 0.72, under illumination of AM 1.5, 100 mW cm(-2).

引用

页码：1801 / 1809

页数：9

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