Dynamics of Forster Energy Transfer in Pyridium Salt-Doped Thin Films

被引：0

作者：

Xu Deng ^{[1
]}

Zhuang Xiao-Hong ^{[2
]}

机构：

[1] Changzhou Inst Mechatron Technol, Dept Elect Engn, Changzhou 213164, Peoples R China

[2] Changzhou Inst Mechatron Technol, Dept Humanities, Changzhou 213164, Peoples R China

来源：

CHINESE PHYSICS LETTERS | 2009年 / 26卷 / 07期

关键词：

AMPLIFIED SPONTANEOUS EMISSION; DISTRIBUTED-FEEDBACK; POLYMER BLENDS; LASING ACTION; LASERS; PHOTOLUMINESCENCE; MICROCAVITY;

D O I：

暂无

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

Properties of photoluminescence and Forster energy transfer dynamics based on an organic pyridium salt trans-4-[p-(N-Hydroxyethyl-N-methylamino) Styryl]-N-methylpyridinium iodide (ASPI) and organic small molecule Alq3 in PMMA polymeric thin films are investigated by steady-state and time-resolved fluorescent spectra as well as theoretical calculation. The observation of reduced emission intensity and the fluorescent lifetime of Alq3 is demonstrated, while the ASPI emission gradually increases and is finally dominant in the PL spectra with increasing ASPI doping concentration. Such results show that there exists an efficient Forster energy transfer (FET) from Alq3 to ASPI due to the large spectral overlap between ASPI absorption and Alq3 emission. The difference between the theoretical FET efficiency and the experimental data is caused by the lower mobility of the Alq3 exciton in the PMMA matrix.

引用

页数：4

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