US 2007/0184302 A1 · Light-emitting device

Abstract

The present invention provides an organic EL device utilizing phosphorescence which can be driven at a low voltage, which realizes high luminance and high efficiency, and which has a long lifetime. The organic EL device of the present invention includes an organic light-emitting layer composed of at least a host material and a dopant, wherein the dopant is a phosphorescent compound containing a halogen atom, and the host material is a linear aromatic compound having no aromatic substituent at a side thereof.

Claims6

Dependent claims

A light-emitting device comprising:

an anode, a cathode, and an organic light-emitting layer interposed between the anode and the cathode, wherein the organic light-emitting layer is composed of a host material and at least one kind of a dopant, the at least one kind of the dopant is a phosphorescent compound containing a halogen atom, and the host material is a linear aromatic compound having no aromatic substituent at a side of the host material.

Dependencies are inferred from the claim text.

Facts

Application

11/570,191Filed 14 Sep 2005

Priority

JP 2004-28324129 Sep 2004

Published

9 Aug 2007

Term ends

Not estimatedThe source records don’t support an estimate.

Classification14 codes

H10K 50/11
OLEDs or polymer light-emitting diodes [PLED]: characterised by the electroluminescent [EL] layers
C09K 11/06
Luminescent materials, e.g. electroluminescent or chemiluminescent: containing organic luminescent materials
H10K 85/626
Polycyclic condensed aromatic hydrocarbons, e.g. anthracene: containing more than one polycyclic condensed aromatic rings, e.g. bis-anthracene
C09K 2211/1003
Non-macromolecular compounds: carbocyclic compounds

Light-emitting device

Life of this patent

Light-emitting device

Life of this patent

Abstract

Claims6