Optical and electrical characterizations of poly(N-alkylcarbazole) light-emitting diodes. Interpretation of electrical behaviour

被引：35

作者：

Lmimouni, K

Legrand, C

Chapoton, A

机构：

[1] Univ Sci & Tech Lille Flandres Artois, UMR CNRS 9929, IEMH DHS, F-59652 Villeneuve Dascq, France

[2] Univ Littoral Cote Opale, LEMCEL, F-62228 Calais, France

来源：

SYNTHETIC METALS | 1998年 / 97卷 / 02期

关键词：

poly(N-alkylcarbazole); light-emitting diodes; optical properties; electrical properties;

D O I：

10.1016/S0379-6779(98)00131-3

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

In this paper, fabrication technology and electrical and optical characterizations of poly(N-alkylcarbazole) (PACZ) light-emitting diodes are reported. The devices are indium-tin oxide (ITO)/PACZ/Al structures and emit blue light at about 470 nm. The influence of the active layer thickness and the temperature on J-V electrical characteristics are studied. The results are interpreted with theoretical models. The current is limited by hole carrier injection at the ITO/polymer contact. In the temperature range 291-393 K, the charge injection is mainly due to the emission-diffusion Richardson Schottky phenomenon. On the contrary, at low temperatures, a tunnelling effect is observed. (C) 1998 Elsevier Science S.A. All rights reserved.

引用

页码：151 / 155

页数：5

共 22 条

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