Magnetic field effect on recombination light in anthracene crystal

被引：18

作者：

Belaid, R ^{[1
]}

Barhoumi, T ^{[1
]}

Hachani, L ^{[1
]}

Hassine, L ^{[1
]}

Bouchriha, H ^{[1
]}

机构：

[1] Fac Sci Tunis, Phys Mat Condensee Lab, Tunis 1002, Tunisia

来源：

SYNTHETIC METALS | 2002年 / 131卷 / 1-3期

关键词：

recombination light; anthracene crystal; electroluminescence;

D O I：

10.1016/S0379-6779(02)00122-4

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Recombination light or the so called electroluminescence has been studied in anthracene crystal by measuring its spectrum; its dependence on applied voltage and its transient response. The effect of magnetic field on this electroluminescence was so investigated as a function of intensity and orientation of the field and shows the same dependence observed for delayed fluorescence. This effect is explained by the formation of triplet and singlet electron-hole pairs leading to singlet and triplet excitons, decay of singlet exciton leads to prompt electroluminescence and triplet-triplet exciton annihilation leads to delayed electroluminescence. A theoretical kinetic model based on matrix density formalism permit to reach the rate constant for the recombination and dissociation of singlet and triplet electron-hole pairs. (C) 2002 Elsevier Science B.V. All rights reserved.

引用

页码：23 / 30

页数：8

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