Organic light-emitting diodes

被引:19
作者
Deussen, M
Bassler, H
机构
[1] UNIV MARBURG,FACHBEREICH PHYS CHEM,D-35042 MARBURG,GERMANY
[2] UNIV MARBURG,ZENTRUM MAT WISSENSCH,D-35042 MARBURG,GERMANY
[3] BAYER AG,BEREICH ZENT FORSCH,D-4150 KREFELD,GERMANY
关键词
D O I
10.1002/ciuz.19970310205
中图分类号
O6 [化学];
学科分类号
0703 ;
摘要
An organic light-emitting diode consists of a thin organic layer sandwiched between electrodes that are capable of injecting a high concentration of electrons and holes when the diode is addressed by an electric field. Electroluminescence results from their bimolecular recombination and the concomitant formation of a fluorescent singlet state of a chromophore. High emission intensity requires efficient injection, the elimination of charge carrier discharge at the counterelectrodes and a high photoluminescence yield of the emitter. Of crucial importance is the choice of electrode materials and organic components based upon their workfunction and their oxidation/reduction potentials, respectively, in conjunction with the structure of the layer assembly. Corrosion effects involving H2O and O-2 can limit the device's performance severely.
引用
收藏
页码:76 / 86
页数:11
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