[EN] METAL COMPLEXES WITH DIBENZO[F,H]QUINOXALINES<br/>[FR] COMPLEXES MÉTALLIQUES COMPRENANT DES DIBENZO[F,H]QUINOXALINES
申请人:BASF SE
公开号:WO2013104649A1
公开(公告)日:2013-07-18
This invention relates to electroluminescent metal complexes of the formula electronic devices comprising the metal complexes and their use in electronic devices, especially organic light emitting diodes (OLEDs). The metal complexes of formula (I) show high emission efficiency, excellent vaporizability, thermal stability, processing stability, high charge carrier mobilities, low turn-on voltage and high temperature stability of the emission color.
Quinoxaline derivative, and light-emitting element, light-emitting device, and electronic device including quinoxaline derivative
申请人:Nomura Hiroko
公开号:US20090072718A1
公开(公告)日:2009-03-19
An object of the present invention is to provide a quinoxaline derivative represented by a general formula (1). Ar
1
represents one of a substituted or unsubstituted biphenyl group, and a substituted or unsubstituted terphenyl group; Ar
2
represents one of a substituted or unsubstituted phenyl group, a substituted or unsubstituted biphenyl group, and a substituted or unsubstituted terphenyl group; α
1
represents an arylene group having 6 to 25 carbon atoms; and R
11
to R
15
are the same or different from one another, and each of them represents any one of a hydrogen atom, an alkyl group having 1 to 4 carbon atoms, and a substituted or unsubstituted aryl group having 6 to 25 carbon atoms.
An object is to provide a novel heterocyclic compound which can be used for a light-emitting element, as a host material of a light-emitting layer in which a light-emitting substance is dispersed. Other objects are to provide a light-emitting element having low driving voltage, a light-emitting element having high current efficiency, and a light-emitting element having a long lifetime. Provided are a light-emitting element including a compound in which a dibenzo[f,h]quinoxaline ring and a hole-transport skeleton are bonded through an arylene group, and a light-emitting device, an electronic device, and a lighting device each using this light-emitting element. The heterocyclic compound represented by General Formula (G1) below is provided.
An object is to provide a novel organometallic complex capable of emitting phosphorescence by using, as a ligand, an organic compound with which a variety of derivatives can be easily synthesized. Another object is to provide an organometallic complex having high heat resistance. Other objects are to provide a light-emitting element having high emission efficiency and to provide a light-emitting device, an electronic device, and a lighting device having reduced power consumption. Provided are an organometallic complex including a structure represented by the following General Formula (G1), and a light-emitting element, a light-emitting device, an electronic device, and a lighting device formed using the organometallic complex including the structure represented by the following General Formula (G1).
To provide a light-emitting element whose power efficiency is improved and which emits light of natural color like light bulb color. In the light-emitting element, at least three light-emitting units are stacked. The emission spectrum of the light-emitting element has two peaks. One of the two peaks is obtained by combining spectra of light emitted from two light-emitting units. The peak is in the yellow to orange wavelength range and has a wavelength greater than or equal to 560 nm and less than 580 nm. Thus, a wavelength range of high luminosity can be used and the power efficiency can be improved. The color of light emitted from the light-emitting element is close to a blackbody locus in a chromaticity diagram, and light of natural color like light bulb color can be achieved.