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含有的多共振热激活延迟光主体材料用于绿色和红色光OLED

Hyukmin Kwon¹, Seokwoo Kang¹, Sangwook Park¹

¹Integrated Engineering, Department of Chemical Engineering, Kyung Hee University, Yongin-si 17104, Republic of Korea.

Materials (Basel, Switzerland)

|May 14, 2025

概括

一种基于的新型宿主材料通过提高效率和减少滚动来增强光有机发光二极管 (PhOLED). 这种分子设计加速了反向系统间交叉过程,以获得更好的性能.

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:

光有机发光二极管 (PhOLED) 对于高效的照明和显示器至关重要.
效率推进和有限的运行稳定性仍然是PhOLED技术的挑战.
多共振热激活延迟光 (MR-TADF) 材料提供了一条通往高效率的道路.

研究的目的:

为绿色和红色PhOLED设计和合成一种含有的MR-TADF新型宿主材料.
为了研究结合对光物理性质和设备性能的影响.
为了减少效率滚动,并提高PhOLEDs的运行稳定性.

主要方法:

含有的MR-TADF宿主材料 (TDBA-SePh) 的分子设计和合成.
光物理性质的表征,包括反向系统间交叉 (RISC) 速率.
使用新型宿主材料制造和测试绿色和红色PhOLED设备.
将设备性能与传统主体材料 (例如mCP) 的比较.

主要成果:

合成的TDBA-SePh材料通过添加有效激活了RISC过程 (3.91 × 10^4 s^-1).
与基于mCP的设备相比,基于TDBA-SePh的绿色和红色PhOLED显示出更高的外部量子效率 (EQE).
观察到显著降低了效率滚动:绿色设备的2.5%,红色设备的4.3%,在1000 cd m^-2.
性能改善归因于加速的RISC和抑制的三倍三倍灭绝 (TTA).

结论:

将纳入MR-TADF的骨干是提高PhOLED性能的一个有效策略.
新型的TDBA-SePh材料显著降低了效率滚动,并提高了设备效率.
这种分子设计方法对开发下一代OLED具有更好的稳定性和性能具有前景.

关键词:

主体物质是宿主物质.多共振热激活延迟光的多共振有机发光二极管是有机发光二极管.光是一种光效应.

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