Material for organic electroluminescent element, and organic electroluminescent element

Provided is an organic EL element having high efficiency and high driving stability at a low driving voltage. The organic El element is an organic electroluminescent element characterized by having a plurality of organic layers between an anode and a cathode, and containing a first host selected fro...

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Hauptverfasser: HAYASHI KENTARO, IZUMI YO
Format: Patent
Sprache:chi ; eng
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Zusammenfassung:Provided is an organic EL element having high efficiency and high driving stability at a low driving voltage. The organic El element is an organic electroluminescent element characterized by having a plurality of organic layers between an anode and a cathode, and containing a first host selected from indolocarbazole compounds, a second host, and a dopant material in a light-emitting layer. The first host is, for example, an indolocarbazole compound having a substituent containing a nitrogen-containing 6-membered ring such as a triazine ring, and the second host is, for example, an indolocarbazole compound having an aromatic hydrocarbon group or a substituent containing a heterocyclic ring such as a carbazole ring, a dibenzofuran ring or a dibenzothiophene ring. 提供一种在低驱动电压下具有高效率及高驱动稳定性的有机EL元件。所述有机El元件是有机电场发光元件,其特征在于,在阳极与阴极之间具有多个有机层,在发光层中包含选自吲哚并咔唑化合物中的第一主体、第二主体及掺杂剂材料。第一主体例如是具有包含如三嗪环的含氮6元环的取代基的吲哚并咔唑化合物,第二主体例如是具有芳香族烃基、或者包含如咔唑环、二苯并呋喃环或二苯并噻吩环的杂环的取代基的吲哚并咔唑化合物。