Emission process in bilayer organic light emitting diodes

被引:14
作者
Hochfilzer, C
Leising, G
Gao, Y
Forsythe, E
Tang, CW
机构
[1] Graz Tech Univ, Inst Festkorperphys, A-8010 Graz, Austria
[2] Univ Rochester, Dept Phys & Astron, Rochester, NY 14627 USA
[3] Eastman Kodak Co, Imaging Res & Adv Dev, Rochester, NY 14650 USA
关键词
D O I
10.1063/1.121693
中图分类号
O59 [应用物理学];
学科分类号
摘要
Efficient organic light emitting devices (OLEDs) using methyl substituted ladder-type poly (paraphenylene) (m-LPPP) and tris(8-hydroxy) quinoline aluminum (Alq(3)) as active materials are presented. For bilayer OLEDs the emissive region is found to be in both layers adjacent to the m-LPPP/Alq(3) interface. The performance of these hybrid devices with constant m-LPPP thickness and varying Alq(3) thickness is compared to that of a single layer m-LPPP device by investigating the relative spatial distribution of the light emission. The relation between the intensity of the light emitted from each layer and the distance to the cathode metal is discussed. Furthermore, the m-LPPP emission is also affected by the internal electric field at the interface. (C) 1998 American Institute of Physics. [S0003-6951(98)04042-X].
引用
收藏
页码:2254 / 2256
页数:3
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