Solution-Processable Organic Photovoltaic Cell Based on the Oligothiophene with Solubilizing β-alkyl Groups

被引：0
|
作者：
Lim, Eunhee [1 ]
机构：
[1] Kyonggi Univ, Dept Chem, Suwon 443760, Gyeonggi, South Korea
来源：
MOLECULAR CRYSTALS AND LIQUID CRYSTALS | 2014年 / 602卷 / 01期
基金：
新加坡国家研究基金会;
关键词：
small molecule; solar cells; oligothiophene; solution-processing; Organic photovoltaic cells; SMALL MOLECULES; SOLAR-CELLS; PERFORMANCE; DERIVATIVES; ELECTRONICS; UNIT;
D O I：
10.1080/15421406.2014.944786
中图分类号：
O6 [化学];
学科分类号：
0703 ;
摘要：
We synthesized a linear pi-conjugated small molecule (beta-DH5T) based on thiophene, using the palladium-catalyzed Suzuki coupling. The oligothiophene was designed to contain beta-substituted solubilizing alkyl groups to facilitate solution processing. The organic photovoltaic cell based on beta-DH5T:PC71BM gave a power conversion efficiency of 0.46% with a short-circuit current of 4.69mA/cm(2), an open-circuit voltage of 0.60V, and a fill factor of 0.35, giving under AM 1.5G illumination (100mW/cm(2)). The optical and electrochemical properties and molecular alignment of oligothiophene were investigated using UV-visible absorption spectroscopy, cyclic voltammetry, and thin-film X-ray diffraction studies.
引用
收藏
页码：251 / 257
页数：7
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