Organic electroluminescent device, display and illuminating device
AssigneeKonica Minolta Holdings, Inc.
InventorsNoriko Yasukawa, Eisaku Katoh, Tomohiro Oshiyama, Shinya Otsu
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Abstract
Disclosed is an organic EL device having high luminous efficiency and long emission life, wherein emission wavelength is controlled. Also disclosed are an illuminating device and a display. Specifically disclosed is an organic electroluminescent device containing at least a light-emitting layer sandwiched between an anode and a cathode. This organic electroluminescent device is characterized in that the light-emitting layer contains a metal complex having a partial structure represented by the following general formula (1).
Claims6
An organic luminescent device having at least a light emission layer placed between an anode and a cathode, wherein the light emission layer contains an emission host and an emission dopant,
- wherein the emission dopant is a metal complex having a partial structure represented by Formula (2), and a mixing ratio of the emission dopant to the emission host is 0.1 to 30 weight %
- wherein,
- Z2 is a group of atoms necessary for forming an aromatic heterocyclic ring together with a N atom and X22,
- X22 is a carbon atom or a nitrogen atom,
- the formed aromatic heterocyclic ring is selected from the group consisting of pyrazole, oxazole, thiazole, tetrazole, pyridazine, pyrazine and triazine, and
- M2 is a metal element of Group VIII of the periodic table.
Dependencies are inferred from the claim text.