Arylcarbazoles as hosts in PHOLEDs

• US 20060088728A1
• Filed: 10/22/2004
• Published: 04/27/2006
• Est. Priority Date: 10/22/2004
• Status: Abandoned Application

• Current Assignee: Bin Ma, David Knowles, Raymond Kwong, William Ceyrolles
• Original Assignee: Bin Ma, David Knowles, Raymond Kwong, William Ceyrolles
• Inventors: Knowles, David, Ma, Bin, Kwong, Raymond, Ceyrolles, William
• Application Number:
  US10/971,844
• Publication Number:
  US 20060088728A1
• Time in Patent Office: Days
• US Class Current: 428/690
• CPC Class Codes: C07D 209/82 Carbazoles; Hydrogenated carbazoles
• CPC Class Codes: C09K 11/06 containing organic luminescent materials
• CPC Class Codes: C09K 2211/1011 Condensed systems
• CPC Class Codes: C09K 2211/1029 containing one nitrogen atom as the heteroatom
• CPC Class Codes: H05B 33/14 characterised by the chemical or physical composition or the arrangement of the electroluminescent material , or by the simultaneous addition of the electroluminescent material in or onto the light source
• CPC Class Codes: H10K 2101/10 Triplet emission
• CPC Class Codes: H10K 2102/103 comprising indium oxides, e.g. ITO
• CPC Class Codes: H10K 50/11 characterised by the electroluminescent [EL] layers
• CPC Class Codes: H10K 85/324 comprising aluminium, e.g. Alq3
• CPC Class Codes: H10K 85/342 comprising iridium
• CPC Class Codes: H10K 85/60 Organic compounds having low molecular weight H10K85/10 - H10K85/50 take precedence
• CPC Class Codes: H10K 85/615 Polycyclic condensed aromatic hydrocarbons, e.g. anthracene
• CPC Class Codes: H10K 85/622 containing four rings, e.g. pyrene
• CPC Class Codes: H10K 85/6572 comprising only nitrogen in the heteroaromatic polycondensed ring system, e.g. phenanthroline or carbazole

Abstract

An organic light emitting device is provided. The device has an anode, a cathode and an emissive layer disposed between the anode and the cathode. The emissive layer includes a host material and a dopant, and the host material is selected from the group consisting of: wherein each R represent no substitution, mono-, di-, or tri-substitution, and the substituents are the same or different, and may be alkyl, alkenyl, alkynyl, aryl, thioalkoxy, halo, haloalkyl, cyano, carbonyl, carboxyl, heteroaryl, and substituted aryl, and at least one R for each Compounds I, II, III, or IV includes a carbazole group.

Claims

1. A device, comprising:

an anode;

a cathode;

an emissive layer disposed between the anode and the cathode, wherein the emissive layer comprises a host and a dopant, and wherein the host material is selected from the group consisting of;

wherein each R represent no substitution, mono-, di-, or tri- substitution, and wherein the substituents are the same or different, and each is selected from the group consisting of alkyl, alkenyl, alkynyl, aryl, thioalkoxy, halo, haloalkyl, cyano, carbonyl, carboxyl, heteroaryl, and substituted aryl, and wherein at least one R for each Compounds I, II, III, or IV includes a carbazole group.

2. The device of claim 1, wherein each R represents no substitution, mono-, di-, or tri-substitution and all substituents are carbazole.

3. The device of claim 1, wherein the host material has the formula:

and wherein at least one of R₁ and R₂ includes a carbazole group.

4. The device of claim 3, wherein R₁ and R₂ each include a carbazole group.

5. The device of claim 3, wherein the host material has the formula:

6. The device of claim 1, wherein the host material has the formula:

and wherein at least one of R₃, R₄, and R₅ includes a carbazole group.

7. The device of claim 6, wherein R₃ and R₅ each include a carbazole group.

8. The device of claim 6, wherein the host material has the formula:

9. The device of claim 1, wherein the host material has the formula:

and wherein at least one of R₆, R₇, and R₈ includes a carbazole group.

10. The device of claim 9, wherein R₆ and R₈ each include a carbazole group.

11. The device of claim 9, wherein the host material has the formula:

12. The device of claim 9, wherein the host material has the formula:

13. The device of claim 1, wherein the host material has the formula:

and wherein at least one of R₉, R₁₀, and R₁₁ includes a carbazole group.

14. The device of claim 13, wherein R₉ and R₁₁ each include a carbazole group.

15. The device of claim 13, wherein the host material has the formula:

16. The device of claim 13, wherein the host material has the formula:

17. The device of claim 1, wherein the dopant is a phosphorescent emissive material.

18. A device, comprising:

an anode;

a cathode;

an organic layer disposed between the anode and the cathode, wherein the organic layer comprises a material selected from the group consisting of;

wherein each R represent no substitution, mono-, di-, or tri- substitution, and wherein the substituents are the same or different, and each is selected from the group consisting of alkyl, alkenyl, alkynyl, aryl, heteroaryl, thioalkoxy, halo, haloalkyl, cyano, carbonyl, carboxyl, and substituted aryl, and wherein at least one R for each Compounds I, II, III, or IV includes a carbazole group.

19. The device of claim 18, wherein each R represent no substitution, mono-, di-, or tri-substitution and is a carbazole group.

20. A compound, having a formula selected from the group consisting of:

wherein each R represent no substitution, mono-, di-, or tri- substitution, and wherein the substituents are the same or different, and each is selected from the group consisting of alkyl, alkenyl, alkynyl, aryl, heteroaryl, thioalkoxy, halo, haloalkyl, cyano, carbonyl, carboxyl, and substituted aryl, and wherein at least one R for each Compounds I, II, III, or IV includes a carbazole group.

21. The compound of claim 20, wherein each R represents no substitution, mono-, di-, or tri-substitution and all substituents are carbazole.

22. The compound of claim 20, having the formula:

and wherein at least one of R₁ and R₂ includes a carbazole group.

23. The compound of claim 22, wherein R₁ and R₂ each include a carbazole group.

24. The compound of claim 22, having the formula:

25. The compound of claim 20, having the formula:

and wherein at least one of R₃, R₄, and R₅ includes a carbazole group.

26. The compound of claim 25, wherein R₃ and R₅ each include a carbazole group.

27. The compound of claim 25, having the formula:

28. The compound of claim 20, having the formula:

and wherein at least one of R₆, R₇, and R₈ includes a carbazole group.

29. The compound of claim 28, wherein R₆ and R₈ each include a carbazole group.

30. The compound of claim 28, having the formula:

31. The compound of claim 28, having the formula:

32. The compound of claim 20, having the formula:

and wherein at least one of R₉, R₁₀, and R₁₁ includes a carbazole group.

33. The compound of claim 32, wherein R₉ and R₁₁ each include a carbazole group.

34. The compound of claim 32, having the formula:

35. The compound of claim 32, having the formula: