高效,低滚动,红色",热刺激"有机发光二极管由的重原子效应促进
Xiangyu Dong1,2, Xin Xie1,2, Shaogang Shen1,2
1Key Laboratory of Photochemical Conversion and Optoelectronic Materials, Technical Institute of Physics and Chemistry, Chinese Academy of Sciences, Beijing Beijing 100190, China.
The journal of physical chemistry letters
|September 3, 2024
概括
使用而不是硫的新型红热激子材料被开发为高效的有机发光二极管. 这些材料显示效率下降,解决了OLED技术的一个关键挑战.
科学领域:
- 材料科学 材料科学 材料科学
- 有机电子 有机电子
- 光物理学的光学物理学
背景情况:
- 开发高效的有机发光二极管 (OLED) 以最小的效率滚动至关重要.
- 能源差距法常常限制了适合的红热刺激材料的开发.
研究的目的:
- 设计和合成基于色二醇受体的新型红热激素材料.
- 通过结合重原子效应来克服能量差距定律的局限性.
主要方法:
- 替换硫与在甲核中的,以创建一个甲接受器.
- 合成了两个新的材料:BSe-DtBuTPA和BSe-2PhCz-d24.
- 使用这些新型发射器制造和测试OLED设备.
主要成果:
- 合成的二二醇材料表现出重原子效应和增强的电子吸收能力.
- 由于重原子效应,观察到超快的反向系统间交叉速率 (7.00 × 10^7 和 1.17 × 10^7 s^-1).
- 在OLED设备中,最大的外部量子效率为4.81% (BSe-DtBuTPA,653 nm) 和7.15% (BSe-2PhCz-d24,596 nm).
- 深红色的BSe-DtBuTPA装置显示了可以忽略不计的效率滚动 (18.5%在10000cd/m^2).
结论:
- 将纳入乙受体有效地增强了OLED材料的材料特性.
- 这些新的二二醇材料在OLED应用中显示出高效和稳定的红光发射潜力.
- 开发的材料提供了一个有希望的策略,以减轻有机发光二极管的效率下降.
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