Singlet exciton migration in a conjugated polymer by picosecond time-resolved photoluminescence

被引：0
|
作者：
Ma, GH [1 ]
Qian, SX
Lei, H
Wang, HZ
Wang, RQ
Li, YF
机构：
[1] Fudan Univ, Dept Phys, Shanghai 200433, Peoples R China
[2] Fudan Univ, Key Lab Appl Surface Phys, Shanghai 200433, Peoples R China
[3] Zhongshan Univ, Inst Ultrafast Laser Spect, Guangzhou 510275, Peoples R China
[4] Chinese Acad Sci, Inst Chem, Beijing 100080, Peoples R China
来源：
CHINESE PHYSICS LETTERS | 2001年 / 18卷 / 07期
关键词：
D O I：
10.1088/0256-307X/18/7/333
中图分类号：
O4 [物理学];
学科分类号：
0702 ;
摘要：
The transient photoluminescence (PL) of DO-PPV (poly-(2,5-dioctyloxy-1,4-phenylene vinylene)) solution in chloroform was investigated by picosecond time-resolved PL spectroscopy. An ultrafast rise of PL and the following single exponential decay with a time constant of about 400 ps were assigned to the formation of the intrachain exciton and its decay process, respectively. The redshift of the PL emission spectrum with time was caused by the subsequent exciton migration among the different conjugated segments in the DO-PPV polymer.
引用
收藏
页码：944 / 946
页数：3
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