摘要:
Biphenyl derivatives having specific structures represented by the general formula (I); a long-life organic electroluminescent (EL) device comprising a cathode, an anode, and an organic thin film lying between both which is composed of one or more layers including at least one luminescent layer, wherein at least one of the layers contains one or more of the biphenyl derivatives; and biphenyl derivatives favorably usable as the luminescent material in the device: (I) wherein Ar 1 and Ar 2 are each an at least tricyclic fused aromatic hydrocarbon group; and Ar 3 is phenyl or an at least bicyclic fused aromatic hydrocarbon group, with the proviso that when any of Ar 1 to Ar 3 is anthracen-9-yl, no hydrogen atom attaches to the 10-position carbon of the anthracene.
摘要:
Disclosed is an organic electroluminescent device having high luminous efficiency, high heat resistance and extremely long life. Specifically disclosed is an organic electroluminescent device wherein an organic thin film layer composed of one or more layers including at least a light-emitting layer is interposed between a cathode and an anode. The light-emitting layer contains a fused ring-containing compound and a red luminescent metal complex. It is preferable that the fused ring-containing compound is used as a host material, while the red luminescent metal complex is used as a phosphorescent dopant.
摘要:
Disclosed is a material for organic electroluminescent devices which is composed of a compound having a specific structure which is low in symmetry. An organic electroluminescent device comprising an organic thin film layer which is composed of one or more layers including at least a light-emitting layer and sandwiched between an anode and a cathode is also disclosed wherein at least one layer of the organic thin film layer contains the above-described material for organic electroluminescent devices. The material for organic electroluminescent devices enables to obtain an organic electroluminescent device which is free from pixel defects and has a high luminous efficiency, excellent heat resistance and long life.
摘要:
An organic EL multi-color emitting device including a substrate, and a first light-emitting element and a second light-emitting element arranged on the surface of the substrate; the first light-emitting element including, between an anode and a cathode, a first organic layer, a second organic layer and a third organic layer in this sequence in a direction perpendicular to the surface of the substrate; the second light-emitting element including, between an anode and a cathode, a second organic layer and a third organic layer in this sequence in a direction perpendicular to the surface of the substrate; the first organic layer including a first light-emitting dopant; the third organic layer including a second light-emitting dopant; the second organic layer including any of (A) a compound including an arylamine site, and a furan site or a thiophene site, (B) a compound including an arylamine site and a site comprising a nitrogen-containing six-membered ring structure, (C) a compound including a carbazole site; and a furan site or a thiophene site, and (D) a compound including a carbazole site and a site including a nitrogen-containing six-membered ring structure.
摘要:
Disclosed are a novel polycyclic aromatic compound having a specific structure and a material for forming a luminescent coating film which is composed of an organic solvent solution containing such a polycyclic aromatic compound. Also disclosed is an organic electroluminescent (EL) device wherein an organic thin film layer composed of one or more layers including at least a light-emitting layer is interposed between a cathode and an anode. Such an organic EL device has high luminous efficiency and long life, since the polycyclic aromatic compound is contained, by itself or as a component of a mixture, in at least one layer of the organic thin film layer of the organic EL device.