Temperature dependence of transient photoluminescence in tris(8-hydroxyquinoline) aluminum (Alq3)

被引：28

作者：

Priestley, R

Walser, AD

Dorsinville, R

机构：

[1] CUNY City Coll & Grad Ctr, Dept Elect Engn, New York, NY 10031 USA

[2] CUNY, New York State Ctr Adv Technol Ultrafast Photon M, New York, NY 10021 USA

[3] CUNY City Coll & Grad Ctr, Ctr Anal Struct & Interfaces, New York, NY USA

来源：

OPTICS COMMUNICATIONS | 1998年 / 158卷 / 1-6期

基金：

美国国家科学基金会;

关键词：

transient photoluminescence; tris(8-hydroxyquinoline) aluminum; temperature dependence;

D O I：

10.1016/S0030-4018(98)00569-0

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

We have studied the temperature dependence of the dynamics of singlet excited states in pristine films of tris(8-hydroxyquinoline) aluminum (Alq(3)). Measurements of the transient photoluminescence (PL) response revealed an increase in the radiative excited state lifetime and fluorescence quantum yield with decreasing temperature from 300 to 77 K. Bimolecular singlet exciton annihilation measurements show a decrease in the singlet exciton diffusion coefficient and diffusion length at 77 K. A singlet exciton trapping model is used to explain these results. (C) 1998 Published by Elsevier Science B.V. All rights reserved.

引用

页码：93 / 96

页数：4

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