WHITE ORGANIC LIGHT-EMITTING DEVICE
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United States of America Patent
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May 19, 2016
app pub date -
Mar 17, 2014
filing date -
Mar 20, 2013
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Abstract
The present invention relates to white organic light-emitting devices having separate stacked blue/green phosphorescent and red phosphorescent layers. The white organic light-emitting devices emit the desired natural white color and show a reduced power consumption, superior current efficiency, efficacy, external quantum efficiency (EQE) and/or lifetime. In particular, the efficiency of the white organic light emitting device is improved and at the same time the lifetime of the white organic light emitting device is increased.
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