Effect of bathocuproine buffer layer in small molecule organic solar cells with inverted structure

被引：6
|
作者：
Hao, Xia [1 ]
Wang, Shenghao [1 ]
Sakurai, Takeaki [1 ,2 ]
Akimoto, Katsuhiro [1 ]
机构：
[1] Univ Tsukuba, Inst Appl Phys, Tsukuba, Ibaraki 3058573, Japan
[2] Japan Sci & Technol Agcy JST, PRESTO, Kawaguchi, Saitama 3320012, Japan
来源：
JAPANESE JOURNAL OF APPLIED PHYSICS | 2015年 / 54卷 / 04期
关键词：
DEGRADATION; DEPOSITION; FILMS;
D O I：
10.7567/JJAP.54.04DK06
中图分类号：
O59 [应用物理学];
学科分类号：
摘要：
Inverted organic solar cells (OSCs) based on boron subphthalocynine chloride (SubPc) and fullerene (C-60) were fabricated and the device structure was optimized by inserting a bathocuproine (C26H20N2) buffer layer. The power conversion efficiency was greatly improved from 0.8 to 1.6%. The roles of bathocuproine in this inverted device were investigated by photoluminescence and transient photovoltage/photocurrent measurements. The results show that the bathocuproine in the device not only blocks the exciton quenching, but also prohibits the build-up of charge trapping and suppresses the trap-assisted recombination. (C) 2015 The Japan Society of Applied Physics
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页数：5
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