Metal complex and organic electroluminescent display device therewith

Abstract

The present invention is one kind of metal complex capable of being used as the dopant in the light emitting layer of organic electroluminescent display device or the electron barrier between the light emitting layer and the hole transmitting layer. The chemical expression of the metal complex is shown.

Description

technical field [0001] The invention relates to a metal complex and an organic electroluminescent display device for its application, and in particular to a dopant that can be used as a light-emitting layer in a display device, or as a light-emitting layer and a hole transport layer The metal complexes of the electron blocking layer between them can effectively improve the electrical properties of the device, the luminous efficiency and the performance of the device. Background technique [0002] In recent years, organic electroluminescent display devices have grown rapidly, and transition metal complexes have been widely used in electroluminescent materials. In the organic light-emitting layer, the light-emitting materials can be divided into fluorescent and phosphorescent forms, and the luminous efficiency of phosphorescence is about three times that of fluorescence. Phosphorescence generally exists in the form of transition metal complexes. Due to the existence of heavy ...

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Problems solved by technology

However, the known phosphorescent materials have the disadvantage of being difficult to purify by sublimation during preparation, which causes the purification process to take a long time (more than 10 days for some materials), and may also

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