Thermoluminescence of N-carbazolyl-substituted polysilanes

被引：7

作者：

Glowacki, I ^{[1
]}

Dobruchowska, E ^{[1
]}

Ulanski, J ^{[1
]}

机构：

[1] Lodz Tech Univ, Dept Mol Phys, Fac Chem, PL-90924 Lodz, Poland

来源：

SYNTHETIC METALS | 2000年 / 109卷 / 1-3期

关键词：

thermoluminescence; trapping; radiative recombination; polysilanes; N-carbazolyl;

D O I：

10.1016/S0379-6779(99)00214-3

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

The thermoluminescence (TL) studies of photoconducting N-carbazolyl-substituted silane co- and homopolymers carried out in 15-325 K temperature range after photoexcitation at 15 K are reported. Spectral analyses of the isothermal phosphorescence and of the TL at different temperatures are discussed and compared with the analogous results for poly(N-vinylcarbazole). It was found, that the N-carbazolyl side-groups introduce to polysilanes form new photogeneration/recombination centres and they act also as trapping sites. Higher density of N-carbazolyl groups results in increasing population of deep traps. It is concluded that monomeric mechanism of luminescence dominates at low temperatures and excimeric mechanism dominates at higher temperatures. (C) 2000 Elsevier Science S.A. All rights reserved.

引用

页码：139 / 142

页数：4

共 9 条

[1] BINDING-ENERGIES OF TRIPLET EXCIMERS IN POLY(N-VINYLCARBAZOLE) SOLID FILMS FROM LASER-BASED KINETIC SPECTROSCOPY BETWEEN 15-K AND 55-K [J].