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Materials for deep blue organic light emitting devices with ultra high thermal stability and charge mobility

Published online by Cambridge University Press:  21 March 2012

Soonnam Kwon ,
Kyung R. Wee  and
Sang O. Kang
Soonnam Kwon
Affiliation:
Department of Materials Chemistry, Korea University, Sejong Campus, Chochiwon, Chungnam, 339-700, South Korea
Kyung R. Wee
Affiliation:
Department of Materials Chemistry, Korea University, Sejong Campus, Chochiwon, Chungnam, 339-700, South Korea
Sang O. Kang
Affiliation:
Department of Materials Chemistry, Korea University, Sejong Campus, Chochiwon, Chungnam, 339-700, South Korea
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Abstract

The development of materials with high stability and high charge mobility is urgent for commercial application of blue phosphorescent organic light emitting devices (PHOLED). Silicon based inorganic-organic hybrid materials with ultra high glass transition temperature (over 150 °C) and high charge mobility (over 1.16 x 10-3 at 5 x 105 V/cm) were synthesized. These showed high external quantum efficiency of over 19%, and deep blue color coordinates of (0.15, 0.23), when they were used as a host materials in the PHOLED.

The origin of the above interesting properties was investigated by experimental measurements complemented by DFT calculations. Estimations of the structure-property relationship of a molecule in an amorphous thin film would be presented

Keywords

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Type
Articles
Information
MRS Online Proceedings Library (OPL) , Volume 1360: Symposium OO – Synthesis and Processing of Organic and Polymeric Materials for Semiconductor Applications , 2011 , mrss11-1360-oo04-03
Copyright
Copyright © Materials Research Society 2012

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References

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