ORGANIC ELECTROLUMINESCENT ELEMENT

ORGANIC ELECTROLUMINESCENT ELEMENT

Provided is an organic electroluminescence device in which a high luminous efficiency can be obtained even in a case where the LUMO level of a fluorescence material is lower than the LUMO level of a delayed fluorescence material. In the organic electroluminescence device, a light-emitting layer cont...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser: HWANG Songhye, OZAWA Hiroaki, KAKIZOE Hayato, YOSHIZAKI Makoto, KODAMA Yuka, MORIMOTO Kei
Format: Patent
Sprache:eng ; fre ; ger
Schlagworte:
ACYCLIC, CARBOCYCLIC OR HETEROCYCLIC COMPOUNDS CONTAININGELEMENTS OTHER THAN CARBON, HYDROGEN, HALOGEN, OXYGEN, NITROGEN,SULFUR, SELENIUM OR TELLURIUM
ADHESIVES
CHEMISTRY
DYES
HETEROCYCLIC COMPOUNDS
MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FORELSEWHERE
METALLURGY
MISCELLANEOUS APPLICATIONS OF MATERIALS
MISCELLANEOUS COMPOSITIONS
NATURAL RESINS
ORGANIC CHEMISTRY
PAINTS
POLISHES
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Beschreibung
Zusammenfassung:Provided is an organic electroluminescence device in which a high luminous efficiency can be obtained even in a case where the LUMO level of a fluorescence material is lower than the LUMO level of a delayed fluorescence material. In the organic electroluminescence device, a light-emitting layer contains a first organic compound, a second organic compound that is a delayed fluorescence material, and a third organic compound that emits fluorescence, the second organic compound has the LUMO energy higher than that of the third organic compound, the largest component of light emitted from the device is fluorescence from the third organic compound, and an orientation value of the third organic compound in the light-emitting layer is -0.3 or less.