一种磷光主体材料及其制备方法和应用
By employing phenyl-substituted dibenzofuran groups and carbazole as the parent core phosphorescent host material in phosphorescent organic electroluminescent devices, and combining six-membered nitrogen heterocycles and bridging groups, the problems of thermal stability and carrier mobility of the host material were solved, achieving device performance with low driving voltage, high efficiency and long lifetime.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- JILIN OPTICAL & ELECTRONICS MATERIALS CO LTD
- Filing Date
- 2024-02-04
- Publication Date
- 2026-07-17
AI Technical Summary
In existing phosphorescent organic electroluminescent devices, it is difficult to simultaneously satisfy the requirements of high triplet energy level, good carrier mobility, thermal stability and film formation stability in the selection of host materials, resulting in high driving voltage, low luminous efficiency and short device lifetime.
Phosphorescent host materials were synthesized by using phenyl-substituted dibenzofuran groups and carbazole as the parent core, introducing a six-membered nitrogen heterocycle, and then performing a Suzuki coupling reaction to enhance electron-hole recombination and improve carrier mobility. Furthermore, the molecular structure was optimized by bridging groups to enhance thermal stability and film-forming properties.
Lowering the driving voltage of the device improves luminous efficiency, extends device lifespan, enhances the conductivity and thermal stability of the material, and improves the overall performance of the device.
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Figure CN117946087B_ABST