Heterocyclic compound, light-emitting element, light-emitting device, electronic device, and lighting device

• US 9,133,169 B2
• Filed: 08/28/2012
• Issued: 09/15/2015
• Est. Priority Date: 08/31/2011
• Status: Active Grant

• Current Assignee: Semiconductor Energy Laboratory Co., Ltd.
• Original Assignee: Semiconductor Energy Laboratory Co., Ltd.
• Inventors: Kitano, Yasushi, Osaka, Harue, Shitagaki, Satoko
• Primary Examiner(s): GARRETT, DAWN L
• Application Number:
  US13/596,757
• Publication Number:
  US 20130048971A1
• Time in Patent Office: 1,113 Days
• US Class Current: 1/1
• CPC Class Codes: C07D 403/14 containing three or more hetero rings
• CPC Class Codes: C07D 405/14 containing three or more hetero rings
• CPC Class Codes: C07D 409/14 containing three or more hetero rings
• CPC Class Codes: H10K 2101/90 Multiple hosts in the emissive layer
• CPC Class Codes: H10K 50/11 characterised by the electroluminescent [EL] layers
• CPC Class Codes: H10K 85/654 comprising only nitrogen as heteroatom H10K85/652 takes precedence

Abstract

Provided is a novel heterocyclic compound which can be used in a light-emitting layer of a light-emitting element as a host material in which a light-emitting substance is dispersed. A heterocyclic compound represented by a general formula (G1) is provided. Any one of R¹ to R¹⁰ represents a substituent represented by a general formula (G1-1), another one of R¹ to R¹⁰ represents a substituent represented by a general formula (G1-2), and the others separately represent hydrogen, an alkyl group having 1 to 6 carbon atoms, a substituted or unsubstituted phenyl group, or a substituted or unsubstituted biphenyl group. Further, α¹ and α² separately represent a substituted or unsubstituted phenylene group or a substituted or unsubstituted biphenyldiyl group, and A¹ and A² separately represent a substituted or unsubstituted carbazolyl group, a substituted or unsubstituted dibenzothiophenyl group, or a substituted or unsubstituted dibenzofuranyl group.

Claims

1. An organic compound represented by a formula (G1):

2. The organic compound according to claim 1,

wherein the organic compound is represented by a formula (G2-1):

3. The organic compound according to claim 1,

wherein the organic compound is represented by a formula (G2-2):

4. The organic compound according to claim 1,

wherein α

¹ and the α

² are separately represented by a formula (α

-1) or a formula (α

-2);

5. The organic compound according to claim 1,

wherein A¹ and A² are separately represented by any one of formulae (1-1) and (1-2):

6. The organic compound according to claim 1,

wherein A¹ and A² are each represented by a formula (1-1):

7. The organic compound according to claim 1,

wherein A¹ the A² are each represented by a formula (1-2):

8. A light-emitting device comprising:

a pair of electrodes; and

a light-emitting layer containing an organic compound between the pair of electrodes,

wherein the organic compound is represented by a formula (G1);

9. The light-emitting device according to claim 8, wherein the light-emitting layer further comprises a light-emitting substance.

10. The light-emitting device according to claim 9, wherein the light-emitting substance is a phosphorescent compound.

11. The light-emitting device according to claim 8, further comprising an electron-transport layer between the light-emitting layer and one of the pair of electrodes, wherein the electron-transport layer comprises the organic compound.

12. The light-emitting device according to claim 11, wherein the electron-transport layer is in contact with the light-emitting layer.

13. The light-emitting device according to claim 11, further comprising a second electron-transport layer between the electron-transport layer and the one of the pair of electrodes.

14. An electronic device comprising the light-emitting device according to claim 8.

15. A lighting device comprising the light-emitting device according to claim 8.

16. The light-emitting device according to claim 8,

wherein the organic compound is represented by a formula (G2-1):

17. The light-emitting device according to claim 8,

wherein the organic compound is represented by a formula (G2-2):

18. The light-emitting device according to claim 8,

wherein α

¹ and the α

² are separately represented by a formula (α

-1) or a formula (α

-2);

19. The light-emitting device according to claim 8,

wherein A¹ and A² are separately represented by any one of formulae (1-1) and (1-2):