IRIDIUM COMPLEX AND ORGANIC LIGHT-EMITTING DEVICE INCLUDING THE SAME

• US 20140367647A1
• Filed: 10/17/2013
• Published: 12/18/2014
• Est. Priority Date: 06/12/2013
• Status: Active Grant

• Current Assignee: Pusan National University, Samsung Display Company Limited (Samsung Electronics Co. Ltd.)
• Original Assignee: Pusan National University, Samsung Display Company Limited (Samsung Electronics Co. Ltd.)
• Inventors: Kim, Soung-Wook, Kim, Jae-Hong, Kim, Myeong-Suk, Lee, Moon-Jae, Jin, Sung-Ho
• Granted Patent: US 9,490,435 B2
• Time in Patent Office: Days
• US Class Current: 257/40
• CPC Class Codes: C07F 15/0033 Iridium compounds
• CPC Class Codes: C09K 11/06 containing organic luminescent materials
• CPC Class Codes: C09K 2211/185 of the platinum group, i.e. Os, Ir, Pt, Ru, Rh or Pd
• CPC Class Codes: H10K 2101/10 Triplet emission
• CPC Class Codes: H10K 50/11 characterised by the electroluminescent [EL] layers
• CPC Class Codes: H10K 85/342 comprising iridium

Abstract

Provided are an iridium complex represented by Formula 1 below and an organic light-emitting device including the same.

Descriptions of substituents of Formula 1 are the same as described in the detailed description of the present specification.

Claims

1. An iridium complex represented by Formula 1 below:

2. The iridium complex of claim 1, wherein

R₆ is a hydrogen atom, a deuterium atom, a halogen, a hydroxyl group, a cyano group, a nitro group, or a halogen-substituted C₁-C₆₀ alkyl group.

3. The iridium complex of claim 1, wherein

R₁ to R₄, R₅, R₇, and R₈ are each independently a hydrogen atom or a deuterium atom.

4. The iridium complex of claim 1, wherein

the iridium complex of Formula 1 is represented by Formula 2 below:

5. The iridium complex of claim 1, wherein

R₂₂ and R₂₄ are each independently a halogen.

6. The iridium complex of claim 5, wherein

R₂₂ and R₂₄ are each independently —

F.

7. The iridium complex of claim 1, wherein

R₂₃ and R₂₆ are each independently selected from a hydrogen atom, a deuterium atom, a nitro group, a cyano group, a halogen-substituted C₁-C₆₀ alkyl group, an unsubstituted C₁-C₆₀ alkyl group, or N(Q₁)(Q₂), where Q₁ and Q₂ are each independently selected from a hydrogen atom, a substituted or unsubstituted C₁-C₆₀ alkyl group, a substituted or unsubstituted C₆-C₃₀ aryl group, or a substituted or unsubstituted C₂-C₃₀ heteroaryl group.

8. The iridium complex of claim 1, wherein

R₂₁, R₂₅, R₂₇, and R₂₈ are each independently a hydrogen atom or a deuterium atom.

9. The iridium complex of claim 1, wherein

the iridium complex of Formula 1 is any one of Compounds 1-18 below:

10. An organic light-emitting display device comprising:

a first electrode;

a second electrode; and

an organic layer between the first electrode and the second electrode, the organic layer comprising the iridium complex of claim 1.

11. The organic light-emitting device of claim 10, wherein

the organic layer is an emission layer.

12. The organic light-emitting device of claim 10, wherein

the organic layer is a green or blue phosphorescent emission layer, and the iridium complex is used as a phosphorescent dopant.

13. The organic light-emitting device of claim 10, wherein

the organic layer comprises at least one of an emission layer, a hole injection layer, a hole transport layer, a functional layer having a hole injection capability and a hole transportation capability, an electron injection layer, an electron transport layer, or a functional layer having an electron injection capability and an electron transportation capability,

the emission layer comprises the iridium complex of Formula 1, and

the emission layer further comprises an anthracene-based compound, an arylamine-based compound, or a styryl-based compound.

14. The organic light-emitting device of claim 10, wherein

the organic layer comprises at least one of an emission layer, a hole injection layer, a hole transport layer, or a functional layer having a hole injection capability and a hole transportation capability,

a green layer or a blue layer of the emission layer comprises the iridium complex of Formula 1, and

any one layer of a red layer and a white layer of the emission layer comprises a phosphorescent compound.

15. The organic light-emitting device of claim 14, wherein at least one of the hole injection layer, the hole transport layer, or the functional layer having a hole injection capability and a hole transportation capability comprises a charge-generation material.

16. The organic light-emitting device of claim 15, wherein

the charge-generation material is a p-dopant.

17. The organic light-emitting device of claim 16, wherein

the p-dopant is a quinone derivative, a metal oxide, or a cyano group-containing compound.

18. The organic light-emitting device of claim 10, wherein

the organic layer comprises at least one of an emission layer, an electron injection layer, an electron transport layer, or a functional layer having an electron injection capability and an electron transportation capability,

the emission layer comprises the iridium complex of Formula 1, and

at least one of the electron injection layer, the electron transport layer, or the functional layer having an electron injection capability and an electron transportation capability comprises an electron transportation organic compound and a metal complex.

19. The organic light-emitting device of claim 10, wherein

the organic layer is formed by wet chemistry and using the iridium complex of Formula 1.

20. A flat display apparatus comprising the organic light-emitting device of claim 10, wherein the first electrode of the organic light-emitting device is electrically connected to a source electrode or a drain electrode of a thin film transistor.