An investigation of organic photovoltaics improvement via extension of the exciton lifetime

被引：9

作者：

Yao, En-Ping

Tsai, Yi-Jhe

Hsu, Wei-Chou ^{[1
]}

机构：

[1] Natl Cheng Kung Univ, Dept Elect Engn, Inst Microelect, Tainan 70101, Taiwan

来源：

PHYSICAL CHEMISTRY CHEMICAL PHYSICS | 2015年 / 17卷 / 08期

关键词：

SOLAR-CELLS; DIFFUSION; FULLERENE; BLENDS; POLY(3-HEXYLTHIOPHENE); DISSOCIATION;

D O I：

10.1039/c4cp05459h

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：

The phosphorescent material tris(phenylpyrazole) iridium (Ir(ppz)(3)) was doped into the bulk heterojunction (BHJ) layer of a 3-hexylthiophene-2,5-diyl and indene-C60 bisadduct blend to form more excitons in the triplet state. Triplet-state excitons have longer lifetimes than singlet-state excitons. Surface phase separation was determined via atomic force microscopy and the vertical distribution of various molecules was analyzed via secondary ion mass spectroscopy. Several annealing processes were applied to the BHJ layer doped with Ir(ppz)(3) to investigate the thermal stability of the film. The exciton lifetime in the BHJ film was characterized using femtosecond time-reserved photoluminescence.

引用

收藏

页码：5826 / 5831

页数：6

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