MULTI-COMPONENT HOST MATERIAL AND ORGANIC ELECTROLUMINESCENT DEVICE COMPRISING THE SAME

The present invention relates to an organic electroluminescent device comprising at least one light-emitting layer between an anode and a cathode, wherein the light-emitting layer comprises a host and a phosphorescent dopant; the host consists of multi-component host compounds; at least a first host...

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Bibliographische Detailangaben
Hauptverfasser:	PARK, Kyoung-Jin, MOON, Doo-Hyeon, LEE, Seon-Woo, KIM, Chi-Sik, KIM, Young-Kwang, LEE, Kyung-Joo, AHN, Hee-Choon, CHOI, Kyung-Hoon, KIM, Nam-Kyun, SHIM, Jae-Hoon, LEE, Su-Hyun, CHO, Young-Jun
Format:	Patent
Sprache:	eng
Schlagworte:	ADHESIVES CHEMISTRY DYES ELECTRICITY MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FORELSEWHERE METALLURGY MISCELLANEOUS APPLICATIONS OF MATERIALS MISCELLANEOUS COMPOSITIONS NATURAL RESINS PAINTS POLISHES
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Beschreibung
Zusammenfassung:	The present invention relates to an organic electroluminescent device comprising at least one light-emitting layer between an anode and a cathode, wherein the light-emitting layer comprises a host and a phosphorescent dopant; the host consists of multi-component host compounds; at least a first host compound of the multi-component host compounds is a specific bicarbazole derivative containing an aryl group, and a second host compound is a specific carbazole derivative including a nitrogen-containing heteroaryl group. According to the present invention, the organic electroluminescent device using the multi-component host compounds has a high efficiency and long lifespan compared with the conventional device using one component host compound.