Phosphorescent OLED
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United States of America Patent
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Oct 27, 2015
Grant Date -
Mar 15, 2012
app pub date -
Nov 15, 2011
filing date -
Dec 13, 2004
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Abstract
An organic light emitting device having a phase-separated light-emissive layer comprising:
- a charge transport phase comprising a charge transport material; andan emitting phase, the emitting phase comprising a plurality of discrete emissive domains dispersed in the charge transport phase, each emitting domain comprising a host material and one or more metal complexes for emitting light by phosphorescence;wherein the charge transport material has a T1 energy level lower than the T1 energy level of the metal complexes and the host material has a T1 energy level higher than the T1 energy level of the metal complexes.
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