Concentration quenching of a red emitting electroluminescent dye tetraphenylporphyrin: A time-resolved photoluminescence study

被引：6

作者：

Bera, RN ^{[1
]}

Sakakibara, Y

Tokumoto, M

机构：

[1] Univ St Andrews, Sch Phys & Astron, St Andrews KY16 9SS, Fife, Scotland

[2] Natl Inst Adv Ind Sci & Technol AIST, Tsukuba, Ibaraki 3058568, Japan

来源：

JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS | 2005年 / 16卷 / 08期

关键词：

D O I：

10.1007/s10854-005-2731-4

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

This work deals with the steady-state and time-resolved photoluminescence study of a well-known red emitting electroluminescent dye, tetraphenylporphyrin (TPP), doped in poly(methylmethacrylate). From the time-resolved photoluminescence (PL) study, exponential decay of TPP emission was observed for these doped films in the studied concentrations region (10(-4)-10(-1) mol/L). At lower doping concentrations below 10(-2) mol/L, PL lifetimes of TPP were relatively constant (similar to 10 ns) and equal to that of TPP in dilute solution. A decrease in PL lifetime was observed at high doping concentration, down to 8 ns at a concentration of 10(-1) mol/L. This observed decrease in PL lifetime of TPP with the increase of TPP concentration was due to the concentration quenching of TPP monomer emission by the TPP dimer/aggregate sites formed at such higher concentrations. The results of concentration quenching in TPP system were compared to that of tetraphenylchlorin system reported earlier. (C) 2005 Springer Science + Business Media, Inc.

引用

页码：549 / 552

页数：4

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