Organometallic Complex, Luminescent Solid, Organic el Element and Organic el Display
申请人:Sotoyama Wataru
公开号:US20070224447A1
公开(公告)日:2007-09-27
The present invention aims to provide organic EL elements etc., containing phosphorescent organometallic complexes, that can exhibit longer durability, higher emitting efficiency, superior thermal/electrical stability, significantly longer operating life. The organic EL elements comprise an organic thin layer interposed between a positive hole transport layer and a electron transport layer, the organic thin layer comprises an organometallic complex comprising at least a metal element, a tridentate ligand, and a monodentate ligand, wherein the tridentate ligand bonds with the metal atom through two nitrogen atoms and one carbon atom, and the carbon atom exists between the two nitrogen atoms, and a monodentate ligand bonds with the metal atom through a atom selected from the group consisting of C, N, O, P and S atoms.
本发明旨在提供含有磷光有机金属配合物的有机EL元件等,其能够展现更长的耐久性、更高的发光效率、优越的热/电稳定性以及显著更长的使用寿命。有机EL元件包括位于正空穴传输层和电子传输层之间的有机薄层,该有机薄层包括至少一种金属元素、一个三齿配体和一个单齿配体的有机金属配合物,其中三齿配体通过两个氮原子和一个碳原子与金属原子结合,碳原子存在于两个氮原子之间,而单齿配体通过来自由C、N、O、P和S原子组成的原子与金属原子结合。