Investigation of Quinquethiophene Derivatives with Different End Groups for High Open Circuit Voltage Solar Cells

被引：72

作者：

Long, Guankui ^{[1
,2
]}

Wan, Xiangjian ^{[1
,2
]}

Kan, Bin ^{[1
,2
]}

Liu, Yongsheng ^{[1
,2
]}

He, Guangrui ^{[1
,2
]}

Li, Zhi ^{[1
,2
]}

Zhang, Yawei ^{[3
]}

Zhang, Yi ^{[1
,2
]}

Zhang, Qian ^{[1
,2
]}

Zhang, Mingtao ^{[3
]}

Chen, Yongsheng ^{[1
,2
]}

机构：

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

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

[3] Nankai Univ, Coll Chem, Tianjin 300071, Peoples R China

来源：

ADVANCED ENERGY MATERIALS | 2013年 / 3卷 / 05期

关键词：

organic solar cell; small molecule; solution process; DFT calculation; open circuit voltage; POWER-CONVERSION EFFICIENCY; HIGH FILL FACTORS; POLYFLUORENE COPOLYMER; MOLECULAR DESIGN; PERFORMANCE; OLIGOTHIOPHENES; POLYMERS; ELECTRON; CORE;

D O I：

10.1002/aenm.201300046

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 quinquethiophene derivatives with different end groups of octyl 2-cyanoacetate (DCAO5T), 3-ethylrhodanine (DERHD5T) and 2H-indene-1,3-dione (DIN5T) are synthesized in order to obtain higher open circuit voltage (Voc) than their septithiophene analogs. The photovoltaic performance of these three molecules as donors and fullerene derivatives as the acceptors in bulk heterojunction solar cells are studied by using the simple solution spin-coating fabrication process. Among them, DERHD5T shows Voc as high as 1.08 volt and power conversion efficiency of 4.63% under AM 1.5G irradiation (100 mW cm2). The reasons for the high Voc were investigated by the theoretical simulations and consistent results have been obtained in comparison with experimental measurements.

引用

页码：639 / 646

页数：8

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