Benzophenanthroline derivatives and their applications

A technology of benzophenanthroline and derivatives is applied in the field of organic electroluminescence devices, which can solve the problem that the molecular energy gap and triplet energy level cannot be effectively improved, the host bipolar characteristics cannot be realized, and the lack of electron donating groups can be solved. and other problems, to achieve the effects of high carrier transport and luminous efficiency, high melting point and high luminous efficiency
CN108727366BActive Publication Date: 2021-04-30BEIJING ETERNAL MATERIAL TECH +1
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
BEIJING ETERNAL MATERIAL TECH
Publication Date
2021-04-30

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Abstract

The invention discloses a benzophenanthroline derivative and the application of the derivative in the technical field of preparing organic electroluminescence display and lighting. The invention also provides an organic electroluminescence device, which comprises The benzophenanthroline derivatives. Compared with the existing organic electroluminescent device, the organic electroluminescent device of the present invention has better luminous performance, can be driven at a lower voltage, has lower power consumption, and has a longer service life.
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Description

technical field

[0001] The invention belongs to the field of organic electroluminescence, and the invention relates to a novel benzophenanthroline derivative and an organic electroluminescent device using the benzophenanthroline derivative. Background technique

[0002] In 1998, Professor Ma Yuguang of Jilin University doped poly-N-vinylcarbazole (PVK) with an osmium complex [Os(CN) 2 (PPh 3 ) 2 bpy] prepared an electrophosphorescent device (Synthetic Metals, 1998, 94:245-248). In the same year, Thomson and Forrest cooperated to dope the phosphorescent material platinum octaethylporphyrin (PtOEP) in 8-hydroxyquinoline aluminum (Alq3) as the light-emitting layer of the electroluminescent device, so that the internal quantum efficiency and external quantum efficiency were improved respectively. to 23%, 4% (Nature, 1998, 395: 151-154; Appl. Phys. Lett., 1999, 75: 4-6). Since then, organic light-emitting devices based on phosphorescent metal complexes have developed rapidly....

Claims

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