Compounds having fluorene structures
By developing compounds containing specific electron transport group structures, the deficiencies of existing OLEDs in terms of efficiency, voltage and lifespan have been solved, and phosphorescent OLED performance with high efficiency, low voltage and long lifespan has been achieved, which is suitable for a variety of temperature conditions.
Patent Information
- Application Number
- CN201680044334.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Priority Date
- 2015-07-29
- Filing Date
- 2016-07-28
- Publication Date
- 2018-03-27
- Estimated Expiration
- 2036-07-28
AI Technical Summary
There is room for improvement in the efficiency, operating voltage and lifetime of existing phosphorescent OLEDs. In particular, the performance of heteroaromatic compounds as matrix materials in fluorescent and phosphorescent OLEDs is not ideal, and it is difficult to maintain stable performance over a wide temperature range.
Develop compounds containing specific electron transport group structures, such as formula (I) and formula (II). These compounds have excellent solubility, film-forming properties and oxidation stability, and are suitable for red, yellow, green and blue phosphorescent OLEDs. , able to provide long life and high efficiency at low operating voltage, and maintain good performance under a variety of temperature conditions.
These compounds significantly improve OLED efficiency and lifetime, reduce operating voltage, and maintain stable performance over a wide temperature range, making them suitable for a variety of electronic device applications.