ORGANIC ELECTROLUMINESCENT ELEMENT

ORGANIC ELECTROLUMINESCENT ELEMENT

Provided is a blue light emitting organic EL device having high emission efficiency and a long lifetime.An organic electroluminescent device comprising one or more light emitting layers between an anode and a cathode opposite to each other, wherein at least one of the light emitting layers contains...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser: UKIGAI Satoshi, INOUE Munetomo, TERADA Ayaka, TADA Masashi
Format: Patent
Sprache:eng ; fre ; ger
Schlagworte:
ADHESIVES
CHEMISTRY
DYES
ELECTRICITY
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 a blue light emitting organic EL device having high emission efficiency and a long lifetime.An organic electroluminescent device comprising one or more light emitting layers between an anode and a cathode opposite to each other, wherein at least one of the light emitting layers contains an organic emission material having a difference between excited singlet energy (S1) and excited triplet energy (T1) (ΔEST) of 0.20 eV or less as a light emitting dopant, a first host selected from the compounds represented by the following general formula (1), and a second host selected from the compounds represented by the following general formula (2) .