Solution-processed organic photovoltaic cells based on a squaraine dye

被引：63
|
作者：
Chen, Guo [1 ]
Sasabe, Hisahiro [1 ]
Wang, Zhongqiang [1 ]
Wang, Xiaofeng [1 ]
Hong, Ziruo [1 ]
Kido, Junji [1 ]
Yang, Yang [2 ]
机构：
[1] Yamagata Univ, Dept Organ Device Engn, Grad Sch Sci & Engn, Res Ctr Organ Elect ROEL, Yonezawa, Yamagata 9928510, Japan
[2] Univ Calif Los Angeles, Dept Mat Sci & Engn, Los Angeles, CA 90095 USA
来源：
PHYSICAL CHEMISTRY CHEMICAL PHYSICS | 2012年 / 14卷 / 42期
基金：
日本科学技术振兴机构;
关键词：
POLYMER SOLAR-CELLS; EFFICIENT;
D O I：
10.1039/c2cp42445b
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：
In this work, 2,4-bis[4-(N,N-diisobutylamino)-2,6-dihydroxyphenyl] squaraine (SQ) was systematically studied as an electron donor in solution processed photovoltaic cells, showing power conversion efficiency of > 4.0% under AM1.5G 1 sun illumination at room temperature. Low mobilities were found to limit charge transport in the bulk heterojunctions. Efficiency was thus improved to 5.1% at 80 degrees C mainly due to improvement of photocurrent extraction. We also demonstrated that the SQ compound synthesized via a simple method has high purity, and thus can be used in photovoltaic cells without further purification. Our results suggest the huge potential of SQ and its analogs in organic photovoltaic applications.
引用
收藏
页码：14661 / 14666
页数：6
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