Plurality of host materials and organic electroluminescent device comprising the same
OwnerDoo-Hyeon MOON, Mi-Ja LEE +6inventors
InventorsDoo-Hyeon MOON, Mi-Ja LEE, Kyoung-Jin PARK, Yea-Mi SONG, Hyun-Ju KANG, Hyo-Jung LEE, Chi-Sik KIM, DaiKyu KIM
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Abstract
The present disclosure relates to a plurality of host materials comprising at least one first host compound represented by Formula 1 and at least one second host compound represented by Formula 2, and an organic electroluminescent device comprising the same. By comprising a specific combination of compounds according to the present disclosure as host materials, an organic electroluminescent device having significantly improved lifespan characteristics can be provided.
Claims18
A plurality of host materials comprising at least one first host compound and at least one second host compound, wherein the first host compound is represented by the following Formula 1, the second host compound is represented by the following Formula 2, and at least one of the first host compound and the second host compound includes deuterium:
- wherein,
- X1 to X3 each independently represent, N or CRa;
- provided that at least one of X1 to X3 are N;
- Ra represents hydrogen or deuterium;
- and
- Ar1 to Ar3 each independently represent, (C6-C30)aryl unsubstituted or substituted with a substituted or unsubstituted (C1-C30)alkyl, deuterium, (C6-C30)aryl, or a combination thereof, or a carbazole group represented by the following Formula 1-1;
- provided that at least one of Ar1 to Ar3 is a carbazole group represented by the following Formula 1-1;
- wherein,
- L1 represents a single bond, a substituted or unsubstituted phenylene, a substituted or unsubstituted biphenylene, a substituted or unsubstituted terphenylene, or a combination thereof;
- and
- R1 to R8 each independently represent hydrogen, deuterium, or (C6-C30)aryl unsubstituted or substituted with deuterium, (C1-C30)alkyl, (C6-C30)aryl, or a combination thereof;
- wherein
- A1 and A2 each independently represent, a substituted or unsubstituted (C6-C30)aryl, a substituted or unsubstituted dibenzofuranyl, a substituted or unsubstituted dibenzothiophenyl, or a substituted or unsubstituted carbazolyl;
- X11 to X26 each independently represent hydrogen, deuterium, a substituted or unsubstituted (C6-C30)aryl, or a substituted or unsubstituted (3- to 30-membered)heteroaryl;
- or may be linked to the adjacent substituents to form a ring(s), and
- one of X15 to X18 and one of X19 to X22 are connected by a single bond.
An organic electroluminescent compound represented by the following Formula I-1:
- wherein,
- Ar1 and Ar2 each independently represent, a substituted or unsubstituted (C6-C30)aryl or a substituted or unsubstituted (3- to 30-membered)heteroaryl;
- L1 represents a single bond or a substituted or unsubstituted (C6-C30)arylene;
- and
- R1 to R8 each independently represent hydrogen, deuterium, or (C6-C30)aryl unsubstituted or substituted with deuterium, (C1-C30)alkyl, (C6-C30)aryl, or a combination thereof;
- provided that at least one of R1 to R8 includes deuterium.
An organic electroluminescent compound selected from the following compounds:
An organic electroluminescent compound represented by the following Formula I-2:
- wherein,
- Ar1 and Ar2 each independently represent, (C6-C30)aryl unsubstituted or substituted with deuterium;
- L1 represents a single bond or (C6-C30)arylene unsubstituted or substituted with deuterium;
- R1 to R4, R6, and R8 each independently represent, hydrogen or deuterium;
- R5 and R7 each independently represent, phenyl unsubstituted or substituted with deuterium, biphenyl unsubstituted or substituted with deuterium, naphthyl unsubstituted or substituted with deuterium, terphenyl unsubstituted or substituted with deuterium, or a combination thereof;
- provided that at least one of R5 and R7 is biphenyl unsubstituted or substituted with deuterium, naphthyl unsubstituted or substituted with deuterium, or terphenyl unsubstituted or substituted with deuterium.
Dependencies are inferred from the claim text.