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

引用

页数：5

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