Novel amorphous molecular materials for organic light-emitting devices

Karl-Heinz Weinfurtner; Frank Weissoertel; Gabriele Harmgarth; Josef Salbeck

doi:10.1117/12.332599

16 December 1998 Novel amorphous molecular materials for organic light-emitting devices

Karl-Heinz Weinfurtner, Frank Weissoertel, Gabriele Harmgarth, Josef Salbeck

Proceedings Volume 3476, Organic Light-Emitting Materials and Devices II; (1998) https://doi.org/10.1117/12.332599
Event: SPIE's International Symposium on Optical Science, Engineering, and Instrumentation, 1998, San Diego, CA, United States

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.

Citation Download Citation

Karl-Heinz Weinfurtner, Frank Weissoertel, Gabriele Harmgarth, and Josef Salbeck "Novel amorphous molecular materials for organic light-emitting devices", Proc. SPIE 3476, Organic Light-Emitting Materials and Devices II, (16 December 1998); https://doi.org/10.1117/12.332599

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