ORGANIC ELECTROLUMINESCENT ELEMENT, LIGHT-EMITTING MATERIAL THEREFOR, LIGHT EMITTING DEVICE, DISPLAY DEVICE, AND ILLUMINATION DEVICE
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United States of America Patent
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Mar 26, 2015
app pub date -
Oct 5, 2012
filing date -
Oct 7, 2011
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Abstract
An organic electroluminescent element including a luminescent compound represented by the following formula (in which R1 to R14 each independently represent a hydrogen atom, a deuterium atom, an alkyl group, an aryl group, a heteroaryl group, a fluorine atom, a cyano group, an amino group, an alkoxy group, an aryloxy group, a thio group, or a silyl group, and 8 to 13 groups out of R1 to R14 each represent a hydrogen atom or a deuterium atom.) in a light emitting layer has high durability and excellent chromaticity.
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