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16 December 1998 Novel amorphous molecular materials for organic light-emitting devices
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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.
© (1998) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
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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