Measuring the profile of the emission zone in polymeric organic light-emitting diodes

被引：39

作者：

Gather, Malte C. ^{[1
]}

Flaemmich, Michael ^{[2
]}

Danz, Norbert ^{[2
]}

Michaelis, Dirk ^{[2
]}

Meerholz, Klaus ^{[1
]}

机构：

[1] Univ Cologne, Dept Chem, D-50939 Cologne, Germany

[2] Fraunhofer Inst Appl Opt & Precis Engn IOF, D-07745 Jena, Germany

来源：

APPLIED PHYSICS LETTERS | 2009年 / 94卷 / 26期

关键词：

electroluminescence; organic light emitting diodes; polymer blends; EFFICIENCY; TRANSPORT; LIFETIME; DEVICES;

D O I：

10.1063/1.3159836

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

The profile of the emission zone (PEZ) in the emissive layer (EML) of polymeric organic light-emitting diodes (OLEDs) is determined by fitting the measured electroluminescence spectrum of the device with a series of simulated spectra that correspond to different emitter locations. The studied OLEDs are based on two different blue-emitting conjugated polymers. In one case, the PEZ is confined to a 10 nm thin sheet at the anode indicating electron dominated current in the EML. In OLEDs based on the other emitter, the PEZ spreads over the entire EML.

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页数：3

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