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Proceedings Paper

Porous alumina-based cathode for organic light-emitting devices
Author(s): Alexander V. Kukhta; Eduard E. Kolesnik; Ghazi H. Shakah; Mohammad I. Taoubi; Alexander V. Mozalev
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Paper Abstract

We propose a new cathode for organic light-emitting devices based on anodic porous alumina films. For this purpose usual and modified porous alumina and structured aluminum with removed porous alumina layer can be used. The usage of porous alumina cathode results in more inhomogeneous electric field and, as a consequence, more intensive auto electron emission and cathode efficiency. Owing to extended surface this matrix also gives the possibility to reach higher luminophor concentration without noticeable luminescence quenching. Organic electroluminescent devices of this type are easily produced and can be more efficient and stable as compared with usual layered structures. An intensive secondary electron emission is observed after irradiating of activated alumina matrix by an electron beam. We developed one of the proposed porous alumina cathode based organic electroluminescence structure doped with amorphous naphthalimide derivative. A bright electroluminescence of naphthalimide in such a structure was observed for the first time. The ways of the further development of this structure are pointed out.

Paper Details

Date Published: 2 February 2001
PDF: 8 pages
Proc. SPIE 4105, Organic Light-Emitting Materials and Devices IV, (2 February 2001); doi: 10.1117/12.416922
Show Author Affiliations
Alexander V. Kukhta, Institute of Molecular and Atomic Physics (Belarus)
Eduard E. Kolesnik, Institute of Molecular and Atomic Physics (Belarus)
Ghazi H. Shakah, Institute of Molecular and Atomic Physics (Belarus)
Mohammad I. Taoubi, Institute of Molecular and Atomic Physics (Belarus)
Alexander V. Mozalev, Belarusian State Univ. of Informatics and Radioelectronics (Belarus)


Published in SPIE Proceedings Vol. 4105:
Organic Light-Emitting Materials and Devices IV
Zakya H. Kafafi, Editor(s)

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