Organische Leuchtdioden | Zendy

Deußen Martin | Zendy; Bässler Heinz | Zendy

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Organische Leuchtdioden

Author(s) -

Deußen Martin,

Bässler Heinz

Publication year - 1997

Publication title -

chemie in unserer zeit

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.217

H-Index - 24

eISSN - 1521-3781

pISSN - 0009-2851

DOI - 10.1002/ciuz.19970310205

Subject(s) - electroluminescence , common emitter , optoelectronics , materials science , electrode , oled , electric field , diode , layer (electronics) , electron , yield (engineering) , analytical chemistry (journal) , chemistry , nanotechnology , physics , chromatography , metallurgy , quantum mechanics

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 of a fluorescent singlet state of a chrmophore. High emission intensity requires efficient injection, the elimination of charge carrier discharge at the counterelectrodes and a high photluminescence 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. Corrosioon effects involving H 2 O and O 2 can limit the device's performance severely.

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