多共振Indolo[3,2,1-jk]碳醇基主体用于蓝色光有机发光二极管
Xiang Li1, Peng Yuan1, Jinyu Song1
1School of Flexible Electronics (Future Technologies), Nanjing Tech University, 30 South Puzhu Road, Nanjing 211816, China.
Molecules (Basel, Switzerland)
|July 14, 2023
概括
新的多共振主机,m-ICzPBI和o-ICzPBI,在有机发光二极管 (OLED) 中平衡电荷载体迁移. 这提高了设备的效率并减少了滚动,这对于先进的显示技术至关重要.
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:
- 有机发光二极管 (OLED) 中的电荷载体不平衡导致激子迁移,降低效率.
- 设计多共振宿主是平衡载体迁移率的关键.
研究的目的:
- 为高效的OLEDs开发和研究新的多共振主机.
- 合成m-ICzPBI和o-ICzPBI,其中包含印罗[3,2,1-jk]碳醇 (ICz) 基因.
主要方法:
- 合成具有高分子刚性和热稳定的m-ICzPBI和o-ICzPBI.
- 使用FIrpic作为光发射器和新型主机制造OLED设备 (设备A和B).
- 设备性能的表征,包括外部量子效率 (EQE),功率效率 (PE) 和电流效率 (CE),并分析效率滚动.
主要成果:
- 这些新型宿主表现出极好的热稳定性和分子刚性.
- 使用m-ICzPBI的设备A实现了最大的EQE13.4%,PE为24.8 lm W-1和CE为31.6 cd A-1.1.
- 观察到低效率的回转,其值为8.6% (EQE),10.6 lm W-1 (PE) 和20.3 cd A-1 (CE) 在5000 cd m-2.2时.
结论:
- 开发的多共振主机有效平衡OLED中的电荷载体迁移.
- m-ICzPBI和o-ICzPBI显示出高性能和稳定的OLED应用的巨大潜力.
- 这些主机有助于减少效率滚动,这是实际OLED设备的关键因素.
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