Compound and organic light emitting device using the same
The present disclosure relates to a compound represented by Formula 1 and an organic light emitting device using the same. The compound used as a material of an organic material layer of the organic light emitting device provides improved efficiency, low driving voltage, and improved lifetime characteristic.
1. A compound represented by one of the following Formulas 1-1 to 1-13:
wherein, in Formulas 1-1 to 1-13,
X 1 and X 2 are each independently O, S, or N(C 6-20 aryl),
L 1 to L 5 are each independently a single bond, —O—, —S—, —C(C 1-4 alkyl)(C 1-4 alkyl)-, or —N(C 6-20 aryl)-,
R a1 to R a6 , R b1 to R b6 , R 11 to R 16 , R 21 to R 26 , and R 31 to R 35 are each independently hydrogen; deuterium; a halogen; a substituted or unsubstituted tri(C 1-20 alkyl)silyl; a substituted or unsubstituted tri(C 6-20 aryl)silyl; a substituted or unsubstituted di(C 6-20 aryl)amino; a substituted or unsubstituted (C 6-20 aryl)(C 2-20 heteroaryl)amino; a substituted or unsubstituted C 1-20 alkyl; a substituted or unsubstituted C 1-20 haloalkyl; a substituted or unsubstituted C 1-20 alkoxy; a substituted or unsubstituted C 1-20 haloalkoxy; a substituted or unsubstituted C 6-20 aryl; a substituted or unsubstituted C 6-20 aryloxy; or a substituted or unsubstituted C 2-20 heteroaryl containing at least one heteroatom selected from the group consisting of N, O, and S, wherein adjacent substituents of R a1 to R a6 and R b1 to R b6 are optionally connected to each other to form a substituted or unsubstituted C 6-20 aromatic ring,
with the proviso that at least one of R a1 to R a6 , R b1 to R b6 , R 11 to R 16 , R 21 to R 26 , and R 31 to R 35 in one formula is a substituted or unsubstituted tri(C 1-20 alkyl)silyl group, or a substituted or unsubstituted tri(C 6-20 aryl)silyl group; or is substituted by a tri(C 1-20 alkyl)silyl group or a tri(C 6-20 aryl)silyl group.
2. The compound of claim 1 , wherein in Formulas 1-1 to 1-13, X 1 and X 2 are each independently O, S, or N(C 6 H 5 ).
3. The compound of claim 1 , wherein in Formulas 1-1 to 1-13, L 1 to L 4 are each independently a single bond, —O—, —S—, or —C(CH 3 ) 2 − , and L 5 is —N(C 6 H 5 )—.
4. The compound of claim 1 , wherein in Formulas 1-1 to 1-13, at least one of R a1 to R a6 , R b1 to R b6 , R 11 to R 16 , R 21 to R 26 , and R 31 to R 35 is —Si(CH 3 ) 3 or —SiC 6 H 5 ) 3 ; or is substituted by —Si(CH 3 ) 3 or —Si(C 6 H 5 ) 3 .
5. The compound of claim 1 , wherein in Formulas 1-1 to 1-13, R a1 to R a6 , R b1 to R b6 , R 11 to R 16 , R 21 to R 26 , and R 31 to R 35 are each independently hydrogen; deuterium; a halogen; —Si(CH 3 ) 3 ; —Si(C 6 H 5 ) 3 ; —CH 3 ; —CH(CH 3 ) 2 ; —C(CH 3 ) 3 ; —CF 3 ; or —OCF 3 ; and are selected from the group consisting of:
wherein Ph is a phenyl group.
6. The compound of claim 1 , wherein the compound represented by Formula 1 is any one of the following Formulas 1-1A to 1-13A:
wherein, in Formulas 1-1A to 1-13A,
X 1 , X 2 , L 1 to L 5 , R a1 to R a4 , R b1 to R b4 , R 12 , R 13 , R 22 , R 23 , and R 32 are as defined in claim 1 ,
with the proviso that at least one of R a1 to R a4 , R b1 to R b4 , R 12 , R 13 , R 22 , R 23 , and R 32 in one formula is —Si(CH 3 ) 3 or —Si(C 6 H 5 ) 3 ; or is substituted by —Si(CH 3 ) 3 or —Si(C 6 H 5 ) 3 .
7. The compound of claim 1 , wherein the compound is any one selected from the group consisting of the following compounds:
8. An organic light emitting device including: a first electrode; a second electrode provided to face the first electrode; and at least one layer of organic material layers provided between the first electrode and the second electrode, wherein the at least one layer of the organic material layers includes a compound according to claim 1 .
9. The organic light emitting device of claim 8 , wherein the organic material layer including the compound is a light emitting layer, and
the light emitting layer is formed by a vacuum deposition method.
10. The organic light emitting device of claim 9 , wherein the compound is a dopant material, and
the content of the dopant material is 0.5 to 20% by weight with respect to the total material content of the light emitting layer.
11. The organic light emitting device of claim 9 , wherein the light emitting layer further includes a host material, and
the host material is a compound represented by the following Formula 3:
wherein, in Formula 3,
Ar is a C 6-20 aryl or a C 2-60 heteroaryl containing at least one heteroatom selected from the group consisting of N, O, and S, and
n is an integer of 1 to 10.