Electroluminescent device with polyphenyl hydrocarbon hole transport layer
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United States of America Patent
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Mar 2, 2004
Issued Date -
N/A
app pub date -
Apr 26, 2001
filing date -
Dec 9, 1998
priority date (Note) -
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Abstract
An organic multilayer electroluminescent device including an anode and cathode, and comprising therebetween: a hole transport layer; and an electron transport layer disposed in operative relationship with the hole transport layer; wherein: the hole transport layer includes an organic compound having the formula: ##STR1## wherein: Ar is an aryl moiety; n is an integer of from 1 to 6; and substituents R.sup.1 and R.sup.2 are each individually hydrogen, or alkyl of from 1 to 24 carbon atoms; aryl or substituted aryl of from 5 to 28 carbon atoms; or heteroaryl or substituted heteroaryl of from 5 to 28 carbon atoms; or fluorine, chlorine, bromine; or cyano group.
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