Phenanthroline derivative and organic electroluminescence device

Abstract

The invention discloses a phenanthroline derivative and an organic electroluminescence device and belongs to the technical field of organic optoelectronic materials. The phenanthroline derivative is an electron deficiency system with a large conjugate plane, so that a high electron migration rate and high electron affinity can be achieved, and good electron transmission and injection properties can be achieved; in addition, the phenanthroline derivative disclosed by the invention has a certain hole baffling property. The central structure phenanthroline of the phenanthroline derivative has a large volume, the glass transition temperature and the thermal stability of the material are effectively improved, and material filming can be facilitated. An organic electroluminescence device of thephenanthroline derivative comprises an anode, a cathode and an organic matter layer, wherein the organic matter layer is positioned between the anode and the cathode; the organic matter layer comprises the phenanthroline derivative disclosed by the invention. The organic electroluminescence device disclosed by the invention has a low driving voltage, high light emission efficiency and light emitting brightness, and has a long service life.

Description

technical field [0001] The invention relates to the technical field of organic photoelectric materials, in particular to an o-phenanthroline derivative and an organic electroluminescence device thereof. Background technique [0002] Organic optoelectronic materials are organic materials with photon and electron generation, conversion and transport properties. Currently, organic photoelectric materials have been applied to organic electroluminescent devices (Organic Light-Emitting Diode, OLED). OLED refers to a device in which organic photoelectric materials emit light under the action of current or electric field, which can directly convert electrical energy into light energy. In recent years, OLED as a new generation of flat panel display and solid-state lighting technology is receiving more and more attention. Compared with liquid crystal display technology, OLED is more and more used in the field of display and lighting due to its low power consumption, active light emi...

AI Technical Summary

Problems solved by technology

[0005] At present, the hole mobility of hole transport materials used in OLEDs is generally much larger than the electron mobility of electron transport materials, which will directly lead to a significant decline in OLED performance.

Specifically, there are problems such as high operating voltage, low luminous efficiency, and short service life. Therefore, it is of great practical significance to design electron transport materials or hole blocking materials with excellent performance.

Images