申请人:Nippon Steel Chemical Co., Ltd.
公开号:EP2511360A1
公开(公告)日:2012-10-17
Provided are a fluorescence-emitting material which improves luminous efficiency of an organic light-emitting element such as an organic EL element or an organic PL element and an organic light-emitting element using the fluorescence-emitting material. The fluorescence-emitting material includes a compound having an indolocarbazole skeleton represented by the following general formula (1). The organic light-emitting element includes an organic EL element including: a substrate; an anode; a cathode; and a light-emitting layer, the anode and the cathode being laminated on the substrate and the light-emitting layer being sandwiched between the anode and the cathode, in which the light-emitting layer includes: the organic light-emitting material; and as a host material, an organic compound having excited triplet energy higher than that of the organic light-emitting material. In the general formula (1) : a ring A represents an aromatic ring represented by the formula (1a) to be fused with an adjacent ring; a ring B represents a heterocycle represented by the formula (1b) to be fused with an adjacent ring; Ar represents an aromatic hydrocarbon group or an aromatic heterocyclic group; R's each represent hydrogen or a monovalent substituent; and n represents an integer of 1 to 4.
本发明提供了一种可提高有机发光元件(如有机 EL 元件或有机 PL 元件)发光效率的荧光发光材料,以及使用该荧光发光材料的有机发光元件。荧光发光材料包括具有由以下通式(1)表示的吲哚咔唑骨架的化合物。有机发光元件包括有机 EL 元件,其中有机 EL 元件包括:基板;阳极;阴极;和发光层,阳极和阴极层叠在基板上,发光层夹在阳极和阴极之间,其中发光层包括:有机发光材料;和作为宿主材料的有机化合物,该有机化合物的激发三重能高于有机发光材料的激发三重能。在通式(1)中:环 A 代表由式(1a)表示的与相邻环融合的芳香环;环 B 代表由式(1b)表示的与相邻环融合的杂环;Ar 代表芳香烃基团或芳香杂环基团;R 各代表氢或一价取代基;n 代表 1 至 4 的整数。