Organic electroluminescence device
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United States of America Patent
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Mar 29, 2016
Grant Date -
Dec 20, 2012
app pub date -
Dec 28, 2010
filing date -
Jan 15, 2010
priority date (Note) -
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Abstract
Provided is an organic electroluminescence device having a low drive voltage and excellent durability. Provided also is an organic electroluminescence device having low dependency of voltage increment after driving on temperature of usage environment. A light emitting organic thin film containing at least one compound represented by Formula (PQ-1) and a hydrocarbon compound having a specific structure, and an organic electroluminescence device using the same. In Formula (PQ-1), each of Ra, Rb and Rc independently represents a hydrogen atom or an alkyl group, wherein any one of Ra, Rb and Rc represents a hydrogen atom and the remaining two represent an alkyl group. Each of R1 to R5 independently represents a hydrogen atom, an alkyl group, an aryl group, a fluorine atom or a cyano group. Each of Rx and Ry independently represents an alkyl group or a phenyl group.
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