CPC H10K 85/6572 (2023.02) [H10K 85/615 (2023.02); H10K 85/626 (2023.02); H10K 85/654 (2023.02); H10K 85/6574 (2023.02); H10K 85/6576 (2023.02); H10K 50/11 (2023.02); H10K 85/342 (2023.02); H10K 2101/10 (2023.02); H10K 2101/90 (2023.02)] | 7 Claims |
1. A plurality of host materials comprising a first host material comprising a compound represented by the following formula 1, and a second host material comprising a compound represented by the following formula 3:
wherein,
ring A, ring B, and ring C, each independently, represent a substituted or unsubstituted benzene ring, or a substituted or unsubstituted naphthalene ring;
Y represents O, S, or NRa;
Ra represents —L2—Ar2;
Ar1 and Ar2, each independently, represent a substituted or unsubstituted (C6-C30)aryl; a substituted or unsubstituted (3- to 30-membered)heteroaryl containing at least one of nitrogen(s), oxygen(s), and sulfur(s); or a substituted or unsubstituted di(C6-C30)arylamino;
L1 and L2, each independently, represent a single bond, a substituted or unsubstituted (C6-C30)arylene, or a substituted or unsubstituted (3- to 30-membered)heteroarylene; and
n represents an integer of 0 or 1, with the proviso that if n is 0, both ring A and ring B are a substituted or unsubstituted naphthalene ring;
wherein,
Ar1 and Ar22, each independently, represent a phenyl unsubstituted or substituted with deuterium(s), a biphenyl unsubstituted or substituted with deuterium(s), a terphenyl unsubstituted or substituted with deuterium(s), or a naphthyl unsubstituted or substituted with deuterium(s);
L21 represents a naphthylene unsubstituted or substituted with deuterium(s), or a biphenylene unsubstituted or substituted with deuterium(s);
R1, R4, R5, and R8, each independently, represent hydrogen, deuterium, a phenyl unsubstituted or substituted with deuterium(s), a biphenyl unsubstituted or substituted with deuterium(s), a terphenyl unsubstituted or substituted with deuterium(s), or a naphthyl unsubstituted or substituted with deuterium(s); and
R2, R3, R6, and R7, each independently, represent hydrogen or deuterium;
with the proviso that if both Ar21 and Ar22 represent phenyl, at least one of R1, R4, R5, and R8 is not hydrogen or deuterium.
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