Light-Emitting Element, Light-Emitting Device, Electronic Device, Lighting Device, and Heterocyclic Compound
申请人:Semiconductor Energy Laboratory Co., Ltd.
公开号:US20160343955A1
公开(公告)日:2016-11-24
A light-emitting element with high heat resistance and high emission efficiency is provided. A novel heterocyclic compound that can be used in such a light-emitting element is provided. One embodiment of the present invention is a light-emitting element which includes, between a pair of electrodes, a layer containing a first organic compound, a second organic compound, and a light-emitting substance; the first organic compound includes one pyrimidine ring and one ring with a hole-transport skeleton; the second organic compound is an aromatic amine; and the light-emitting substance converts triplet excitation energy into light. A combination of the first organic compound, which includes the one pyrimidine ring and the one ring with the hole-transport skeleton, and the second organic compound, which is the aromatic amine, forms an exciplex.
提供具有高耐热性和高发射效率的发光元件。提供可用于此类发光元件的新型杂环化合物。本发明的一个实施例是一种发光元件,其包括在一对电极之间的层,该层含有第一有机化合物、第二有机化合物和发光物质;第一有机化合物包括一个嘧啶环和一个带有传输孔的环;第二有机化合物是芳香胺;发光物质将三重激发能量转化为光。包括第一有机化合物(包括一个嘧啶环和一个带有传输孔的环)和第二有机化合物(即芳香胺)的组合形成一个激基复合物。