Thermal, structural and photophysical properties of the organic semiconductor Alq3

被引：125

作者：

Cölle, M

Brütting, W

机构：

[1] Univ Bayreuth, D-95440 Bayreuth, Germany

[2] Univ Augsburg, D-86135 Augsburg, Germany

[3] BIMF, D-95440 Bayreuth, Germany

来源：

PHYSICA STATUS SOLIDI A-APPLICATIONS AND MATERIALS SCIENCE | 2004年 / 201卷 / 06期

关键词：

D O I：

10.1002/pssa.200404341

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

This review describes the thermal, structural and photophysical properties of different polycrystalline phases of the organic semiconductor Alq(3). In particular the new blue luminescent delta-phase is shown to contain the facial isomer. The results obtained by using differential scanning calorimetry, X-ray diffraction, infrared spectroscopy, transient and delayed photoluminescence measurements clearly demonstrate the existence of this isomer. From the results presented it is now possible to obtain the pure facial isomer of Alq(3) in large quantities, providing the basis for further investigations to determine its effects on the performance of organic light-emitting diodes. Furthermore, recent results on the properties of the triplet states in Alq are presented. This includes the population of the electronic excited triplet state due to inter-system crossing and the spectrum of the phosphorescence. (C) 2004 WILEY-VCH Veriag GmbH & Co. KGaA, Weinheim.

引用

页码：1095 / 1115

页数：21

共 61 条

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