An organic compound, application thereof, and an organic electroluminescence device comprising the same
By designing organic compounds with chiral centers and spirochetes, the problems of wide half-maximum width and low internal quantum efficiency in OLED materials were solved, achieving high-efficiency, long-lifetime circularly polarized light emission and meeting the color purity requirements of ultra-high-definition displays.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- TSINGHUA UNIVERSITY
- Filing Date
- 2023-06-14
- Publication Date
- 2026-07-21
AI Technical Summary
Existing OLED materials have a wide full width at half maximum (FWHM), resulting in insufficient color purity. Improving color purity through optical filters leads to a decrease in brightness and efficiency, making it difficult to meet the requirements of ultra-high-definition displays. Meanwhile, traditional fluorescent materials have low internal quantum efficiency, and phosphorescent materials rely on precious metals, resulting in high costs.
An organic compound with circularly polarized luminescence properties was designed by introducing a chiral center and a spiro atom into the molecule to connect the two benzene rings on both sides to form an asymmetric structure, which significantly reduced the half-width and improved the luminescence efficiency. The circularly polarized luminescence property was enhanced by utilizing a multiple resonance structure.
It achieves high-efficiency, long-life circularly polarized light emission, with a significantly narrowed half-width in the 20-30nm range and an internal quantum efficiency of over 90%, meeting the color purity requirements of ultra-high-definition displays.
Smart Images
Figure CN116836193B_ABST