ORGANIC ELECTROLUMINESCENCE DEVICE

• US 20140084270A1
• Filed: 08/15/2013
• Published: 03/27/2014
• Est. Priority Date: 08/17/2012
• Status: Abandoned Application

• Current Assignee: Idemitsu Kosan Company Limited
• Original Assignee: Idemitsu Kosan Company Limited
• Inventors: KATO, Tomoki, SADO, Takayasu
• Application Number:
  US13/967,651
• Publication Number:
  US 20140084270A1
• Time in Patent Office: Days
• US Class Current: 257/40
• CPC Class Codes: C09K 11/06 containing organic luminescent materials
• CPC Class Codes: C09K 2211/1007 Non-condensed systems
• CPC Class Codes: C09K 2211/1011 Condensed systems
• CPC Class Codes: C09K 2211/1029 containing one nitrogen atom as the heteroatom
• CPC Class Codes: C09K 2211/1044 containing two nitrogen atoms as heteroatoms
• CPC Class Codes: C09K 2211/1059 containing three nitrogen atoms as heteroatoms
• CPC Class Codes: C09K 2211/1088 containing oxygen as the only heteroatom
• CPC Class Codes: C09K 2211/1092 containing sulfur as the only 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 2101/90 Multiple hosts in the emissive layer
• CPC Class Codes: H10K 2102/103 comprising indium oxides, e.g. ITO
• CPC Class Codes: H10K 85/633 comprising polycyclic condensed aromatic hydrocarbons as substituents on the nitrogen atom
• CPC Class Codes: H10K 85/636 comprising heteroaromatic hydrocarbons as substituents on the nitrogen atom
• CPC Class Codes: H10K 85/654 comprising only nitrogen as heteroatom H10K85/652 takes precedence
• CPC Class Codes: H10K 85/6572 comprising only nitrogen in the heteroaromatic polycondensed ring system, e.g. phenanthroline or carbazole

Abstract

An organic electroluminescence device includes an anode, a cathode, a first organic layer and an emitting layer including a luminescent material, in which the first organic layer and the emitting layer are interposed between the anode and the cathode in this sequence from the anode. The emitting layer contains a first material represented by the following formula (1-1) and a second material. The first organic layer contains a compound represented by the following formula (4).

Claims

1. An organic electroluminescence device comprising:

an anode;

a cathode;

a first organic layer interposed between the anode and the cathode and comprising a compound represented by the following formula (4); and

an emitting layer interposed between the first organic layer and the cathode and comprising a first material represented by the following formula (1-1), a second material and a luminescent material,

2. The organic electroluminescence device according to claim 1, wherein

at least one of A¹ and A² is represented by the following formula (1-1a),

3. The organic electroluminescence device according to claim 1, wherein

the substituted or unsubstituted aromatic hydrocarbon group having 6 to 40 carbon atoms for Ar¹¹ to Ar¹³ in the formula (4) is represented by any one of the following formulae (4-3) to (4-5),

4. The organic electroluminescence device according to claim 2, wherein

the substituted or unsubstituted aromatic hydrocarbon group having 6 to 40 carbon atoms for Ar¹¹ to Ar¹³ in the formula (4) is represented by any one of the following formulae (4-3) to (4-5),

5. The organic electroluminescence device according to claim 1, wherein

the first material is represented by any one of the following formulae (1-2) to (1-4),

6. The organic electroluminescence device according to claim 2, wherein

the first material is represented by any one of the following formulae (1-2) to (1-4),

7. The organic electroluminescence device according to claim 3, wherein

the first material is represented by any one of the following formulae (1-2) to (1-4),

8. The organic electroluminescence device according to claim 4, wherein

the first material is represented by any one of the following formulae (1-2) to (1-4),

9. The organic electroluminescence device according to claim 1, wherein

the group represented by the formula (4-2) is represented by the following formula (4-2-1) or (4-2-2),

10. The organic electroluminescence device according to claim 2, wherein

the group represented by the formula (4-2) is represented by the following formula (4-2-1) or (4-2-2),

11. The organic electroluminescence device according to claim 3, wherein

the group represented by the formula (4-2) is represented by the following formula (4-2-1) or (4-2-2),

12. The organic electroluminescence device according to claim 4, wherein

the group represented by the formula (4-2) is represented by the following formula (4-2-1) or (4-2-2),

13. The organic electroluminescence device according to claim 1, wherein

a in the formula (4-2) is an integer of 1 to 4, and

at least one of R⁵¹ in the formula (4-2) is a substituted or unsubstituted carbazolyl group to be bonded at N position.

14. The organic electroluminescence device according to claim 1, wherein

two of Ar¹¹ to Ar¹³ in the formula (4) are the group represented by the formula (4-2).

15. The organic electroluminescence device according to claim 1, wherein

three of Ar¹¹ to Ar¹³ in the formula (4) are the group represented by the formula (4-2).

16. The organic electroluminescence device according to claim 1, wherein

the second material is represented by the following formula (2),

17. The organic electroluminescence device according to claim 16, wherein

the second material is represented by the following formula (2-3),

18. The organic electroluminescence device according to claim 16, wherein

the second material is represented by the following formula (2-4),

19. The organic electroluminescence device according to claim 16, wherein

the second material is represented by the following formula (2-5),

20. An organic electroluminescence device comprising:

an anode;

a cathode;

a first organic layer interposed between the anode and the cathode and comprising a compound represented by the following formula (4X); and

an emitting layer interposed between the first organic layer and the cathode and comprising a first material represented by the following formula (1-3X), and a luminescent material,