Organic electroluminescence device
View Patent ↗An organic EL device including at least an anode, a cathode and an organic light-emitting zone with high brightness is provided. A mixture containing at least two compounds is used for a light-emitting zone and the spectrum of the luminescence from light-emitting zone includes at least one peak at a wavelength which is different from neither of fluorescent peak positions of the compounds included in light-emitting zone.
1. An organic electroluminescent device, comprising
a light-emitting material,
wherein the light-emitting material comprises two compounds, and a spectrum of luminescence from the light-emitting material includes at least one peak that does not correspond to any peak present in a spectrum of luminescence of either individual compound,
wherein the two compounds each comprise at least one electroluminescent material represented by the following formula
wherein Ar 1 designates a divalent group represented by the formula,
—Ar 6 —Ar 7 —Ar 8 —
wherein Ar 6 to Ar 8 are each imidazole, pyrazole, isothiazole, isoxazole, pyrimidine, pyridazine, furazane, thianthrene, isobenzofuran, indolizine, isoindole, 1H-indazole, purine, phthalazine, naphthyridine, quinazoline, cinnoline, pteridine, β-carbazoline, phenanthridine, acridine, perimidine, or phenoxazine,
wherein Ar 2 to Ar 5 designate, independently with one another, a substituted or non-substituted aryl group having 6 to 20 carbon atoms, and
wherein at least one of Ar 2 to Ar 5 of the compound represented by the formula has a substituted or non-substituted styryl group as a substituent.