Small molecular organic photovoltaic cells with exciton blocking layer at anode interface for improved device performance

被引：86

作者：

Hirade, Masaya ^{[1
,2
]}

Adachi, Chihaya ^{[1
,2
,3
]}

机构：

[1] Kyushu Univ, Ctr Future Chem, Nishi Ku, Fukuoka 8190395, Japan

[2] Life Beans Ctr Kyushu, Bioelectromech Autonomous Nanosyst BEANS Lab, Nishi Ku, Fukuoka 8190395, Japan

[3] Kyushu Univ, I2CNER, Fukuoka 8190395, Japan

来源：

APPLIED PHYSICS LETTERS | 2011年 / 99卷 / 15期

基金：

日本学术振兴会;

关键词：

D O I：

10.1063/1.3650472

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

We demonstrate enhanced power conversion efficiency (eta(PCE)) for small molecular-based organic photovoltaic cells with an exciton blocking layer (ExBL) at the anode/donor interface. Although poly(3,4-ethylenedioxythiophene):poly(4-styrene sulfonate) (PEDOT:PSS) films are widely used as anodic buffer layers, they also act as exciton quenchers. To prevent exciton quenching, we introduced a tris[4-(5-phenyl thiophen-2-yl)phenyl]amine layer between the donor and the PEDOT:PSS layer and clarified its effect. By a combination of dual ExBLs at both the anode and cathode sides, we achieved significantly enhanced short circuit current and eta(PCE) values; the highest eta(PCE) = 5.24% was obtained by optimizing the device parameters. (C) 2011 American Institute of Physics. [doi: 10.1063/1.3650472]

引用

页数：3

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