Invention Grant
US08962158B2 Material having indolocarbazole compound for phosphorescent light-emitting element and organic electroluminescent element using the same 有权
具有磷光发光元件的吲哚咔唑化合物的材料和使用其的有机电致发光元件

Material having indolocarbazole compound for phosphorescent light-emitting element and organic electroluminescent element using the same
Abstract:
Provided is an organic electroluminescent device (organic EL device), which has improved luminous efficiency, has sufficient driving stability, and has a simple construction. The organic EL device of the present invention is an organic electroluminescent device, including a light-emitting layer and a hole-transporting layer between an anode and a cathode laminated on a substrate, in which the light-emitting layer contains a phosphorescent light-emitting dopant and an indolocarbazole compound that serves as a host material, or alternatively, the hole-transporting layer contains an indolocarbazole compound. The indolocarbazole compound is represented by the following formula (1). In the formula: A1's each represent an aromatic hydrocarbon group or an aromatic heterocyclic group, provided that at least one of A1's has a fused ring structure; and R1's each represent a hydrogen atom, an alkyl group, an alkoxy group, or an acyl group.
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