Organic electroluminescent device

• US 20060255721A1
• Filed: 04/25/2006
• Published: 11/16/2006
• Est. Priority Date: 04/25/2005
• Status: Abandoned Application

• Current Assignee: UDC Ireland Limited
• Original Assignee: Fuji Photo Film Co Limited (Fujifilm Holdings Corporation)
• Inventors: Tsukahara, Jiro, Igarashi, Tatsuya
• Application Number:
  US11/410,019
• Publication Number:
  US 20060255721A1
• Time in Patent Office: Days
• US Class Current: 313/504
• CPC Class Codes: C09K 11/06 containing organic luminescent materials
• CPC Class Codes: C09K 2211/1007 Non-condensed systems
• CPC Class Codes: C09K 2211/1029 containing one nitrogen atom as the heteroatom
• CPC Class Codes: C09K 2211/185 of the platinum group, i.e. Os, Ir, Pt, Ru, Rh or Pd
• 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 50/11 characterised by the electroluminescent [EL] layers
• CPC Class Codes: H10K 85/341 Transition metal complexes, e.g. Ru(II)polypyridine complexes H10K85/331 takes precedence
• CPC Class Codes: H10K 85/346 comprising platinum

Abstract

The present invention provides an organic electroluminescent device comprising one or more organic compound layers including a luminescent layer between a pair of electrodes, wherein at least one of the organic compound layers contains a pentadentate or hexadentate metal complex having a bivalent platinum ion or a bivalent palladium ion as the central metal ion.

Claims

1. An organic electroluminescent device comprising one or more organic compound layers including a luminescent layer between a pair of electrodes, wherein at least one of the organic compound layers contains a pentadentate or hexadentate metal complex having a bivalent platinum ion or a bivalent palladium ion as the central metal ion.

2. The organic electroluminescent device according to claim 1, wherein the pentadentate or hexadentate metal complex has a pentadentate or hexadentate ligand.

3. The organic electroluminescent device according to claim 2, wherein the pentadentate metal complex having the pentadentate ligand is a compound represented by the following formula (1), formula (2), or formula (3):

4. The organic electroluminescent device according to claim 2, wherein the hexadentate metal complex having the hexadentate ligand is a compound represented by the following formula (4), formula (5), or formula (6):

5. The organic electroluminescent device according to claim 2, wherein the pentadentate metal complex having the pentadentate ligand is a compound represented by the following formula (7):

6. The organic electroluminescent device according to claim 2, wherein the hexadentate metal complex having the hexadentate ligand is a compound represented by the following formula (8):

7. The organic electroluminescent device according to claim 1, wherein the pentadentate or hexadentate metal complex is a phosphorescence material.

8. The organic electroluminescent device according to claim 2, wherein the pentadentate or hexadentate metal complex is a phosphorescence material.

9. The organic electroluminescent device according to claim 3, wherein the pentadentate or hexadentate metal complex is a phosphorescence material.

10. The organic electroluminescent device according to claim 4, wherein the pentadentate or hexadentate metal complex is a phosphorescence material.

11. The organic electroluminescent device according to claim 5, wherein the pentadentate or hexadentate metal complex is a phosphorescence material.

12. The organic electroluminescent device according to claim 6, wherein the pentadentate or hexadentate metal complex is a phosphorescence material.

13. The organic electroluminescent device according to claim 1, wherein the thickness of the luminescent layer is 5 nm to 1 μ

m.

14. The organic electroluminescent device according to claim 1, wherein the luminescent layer is a laminated structure having 4 layers or more but 30 layers or less.

15. The organic electroluminescent device according to claim 1, wherein the thickness of the respective layers constituting the laminated structure is 0.2 nm or more but 20 nm or less.

16. A multi color luminescent device comprising a blue luminescent device containing a blue fluorescence compound and the organic electroluminescent device according to claim 1.