ORGANIC ELECTROLUMINESCENT DEVICE WITH ADDITIVE

PROBLEM TO BE SOLVED: To improve light emission efficiency of an organic electroluminescent device (OLED) containing a phosphorescent organic metal substance by improving a function of the organic EL device.SOLUTION: There is provided the electroluminescent device comprising a cathode, an anode and...

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Bibliographic Details
Main Authors YOUNG RALPH HOWARD, KONDAKOVA MARINA EDUARDOVNA
Format Patent
LanguageEnglish
Published 27.10.2011
Subjects
ADHESIVES
CHEMISTRY
DYES
ELECTRIC HEATING
ELECTRIC LIGHTING NOT OTHERWISE PROVIDED FOR
ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
ELECTRICITY
MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FORELSEWHERE
METALLURGY
MISCELLANEOUS APPLICATIONS OF MATERIALS
MISCELLANEOUS COMPOSITIONS
NATURAL RESINS
PAINTS
POLISHES
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Summary:PROBLEM TO BE SOLVED: To improve light emission efficiency of an organic electroluminescent device (OLED) containing a phosphorescent organic metal substance by improving a function of the organic EL device.SOLUTION: There is provided the electroluminescent device comprising a cathode, an anode and a light-emitting layer (LEL) located therebetween and comprising a phosphorescent guest material, a hole- and electron-transporting host material, and an efficiency-enhancing material having an ionization potential lower than that of the host material and a triplet energy level that is lower than that of the phosphorescent guest material by no more than 0.2 eV. Such a device provides useful light emission features.
Bibliography:Application Number: JP20110114798