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Proceedings Paper

Novel amorphous molecular materials for organic light-emitting devices
Author(s): Karl-Heinz Weinfurtner; Frank Weissoertel; Gabriele Harmgarth; Josef Salbeck
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Paper Abstract

New structures for blue light emitting amorphous materials, based on an extended spiro-structural concept are reported. The chromophores are essentially based on p-oligophenyl chromophores, with further improved optical and morphological properties. The photoluminescence quantum efficiency of the blue emitter in amorphous solid state reach about 70 percent. New oxadiazone based electron transport materials are presented, where triptycenes have been used as new structural motif to increase the morphologic stability and preserve the electronic properties of the parent compound. Both, the emitting material and the electron transport materials can be processed into thin amorphous films with high morphologic stability by vapor deposition as well as by spin-coating from solutions in organic solvents.

Paper Details

Date Published: 16 December 1998
PDF: 9 pages
Proc. SPIE 3476, Organic Light-Emitting Materials and Devices II, (16 December 1998); doi: 10.1117/12.332599
Show Author Affiliations
Karl-Heinz Weinfurtner, Max-Planck-Institut fur Polymerforschung (Germany)
Frank Weissoertel, Max-Planck-Institut fur Polymerforschung (Germany)
Gabriele Harmgarth, Aventis Research & Technologies GmbH & Co KG (Germany)
Josef Salbeck, Max-Planck-Institut fur Polymerforschung (Germany)

Published in SPIE Proceedings Vol. 3476:
Organic Light-Emitting Materials and Devices II
Zakya H. Kafafi, Editor(s)

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