| 摘要 |
The present invention relates to a highly efficient carbazole-based compound and to an organic electroluminescence device including the same. According to the present invention, provided are a compound for an organic electroluminescence device and an organic electroluminescence device including the compound, in which a carbazole-based phosphine oxide compound, which is a compound intended for an organic electroluminescence device, is employed to overcome the problems of conventional compounds for organic electroluminescence devices, i.e. those of instable thermal stability and low efficiency, and particularly, the compound of the present invention exhibits superior efficiency in pure-blue phosphorescent devices. |
| 主权项 |
1. A compound for an organic electroluminescence device, represented by Chemical Formula 1 below: wherein Ar represents a substituted or unsubstituted aryl group having 6 to 50 ring carbons, or a substituted or unsubstituted heteroaryl group having 5 to 50 ring atoms, Y1 to Y5 are independently an oxygen atom, a sulfur atom or a selenium atom, Ar1 to Ar10 are identical or different substituents and each represent a substituted or unsubstituted aryl group having 6 to 50 ring carbons, or a substituted or unsubstituted heteroaryl group having 5 to 50 ring atoms, R1 to R4 each represent a unit which does not expand a conjugated structure of a carbazole unit, and part or all of R1 to R4 are independently a hydrogen atom, or R1 to R4 are identical or different substituents and each represent a halogen atom, a cyano group, a nitro group, a substituted or unsubstituted alkyl group having 1 to 50 carbons, a substituted or unsubstituted cycloalkyl group having 3 to 50 carbons, a substituted or unsubstituted thio group having 1 to 50 carbons, or a substituted or unsubstituted silyl group having 1 to 50 carbons, wherein a group suitable for substitution on the Ar, Ar1 to Ar10, and R1 to R4 is identical or different and represents a halogen atom, a cyano group, a nitro group, an aryl group having 6 to 50 ring carbons, a heteroaryl group having 5 to 50 ring atoms, an alkyl group having 1 to 50 carbons, a cycloalkyl group having 3 to 50 carbons, a thio group having 1 to 50 carbons, or a silyl group having 1 to 50 carbons, n1 to n5 are independently 0 or 1, n1+n2+n3+n4+n5≠0, and n6 to n9 are independently 0 or 1. |
