ORGANOMETALLIC COMPLEX AND ORGANIC ELECTROLUMINESCENT DEVICE USING THE SAME

• US 20080103308A1
• Filed: 10/31/2007
• Published: 05/01/2008
• Est. Priority Date: 10/31/2006
• Status: Active Grant

• Current Assignee: Samsung Display Company Limited (Samsung Electronics Co. Ltd.)
• Original Assignee: Samsung Electronics Co. Ltd.
• Inventors: RAGINI, Das Rupasree, KIM, Hee-kyung, PARK, Joon-yong, KWON, O-hyun, HAN, Eun-sil, BYUN, Young-hun, SONG, Jung-bae
• Granted Patent: US 7,687,626 B2
• Time in Patent Office: Days
• US Class Current: 546/5
• CPC Class Codes: C07F 15/0033 Iridium compounds
• 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 2211/185 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 85/1135 Polyethylene dioxythiophene [PEDOT]; Derivatives thereof
• CPC Class Codes: H10K 85/342 comprising iridium
• CPC Class Codes: H10K 85/631 Amine compounds having at least two aryl rest on at least one amine-nitrogen atom, e.g. triphenylamine
• CPC Class Codes: Y10S 428/917 Electroluminescent

Abstract

Provided are a highly efficient phosphorescent organometallic complex and an organic electroluminescent (EL) device using the same. The organometallic complex can be used in the formation of an organic layer of the organic EL device, and can emit light in a red wavelength range as a highly efficient phosphorescent material. The organic EL device using the organometallic complex can exhibit high brightness and a low driving voltage.

Claims

1. An organometallic complex represented by Formula 1 below:

2. The organometallic complex of claim 1, wherein the compound of Formula 1 is a compound represented by Formula 2 below:

3. The organometallic complex of claim 2, wherein the compound of Formula 2 is selected from compounds represented by Formulae 4 through 9 below:

4. The organometallic complex of claim 1, wherein the cyclometalating ligand CyN-CyC is one of compounds represented by the following formulae:

5. The organometallic complex of claim 1, wherein an auxiliary ligand bound to the central metal via nitrogen and oxygen atoms is one of compounds represented by the following formulae:

6. The organometallic complex of claim 1, wherein M is Ir or Pt.

7. An organic electroluminescent (EL) device comprising an organic layer interposed between a pair of electrodes,

wherein the organic layer comprises the organometallic complex of claim 1.

8. The organic EL device of claim 7, wherein the organic layer is an emitting layer.

9. The organic EL device of claim 7, wherein the content of the organometallic complex is 1 to 30 parts by weight based on the total weight (100 parts by weight) of an emitting layer forming material.