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基于库马林的混合本地和电荷转移蓝色发射器的合理设计,用于溶液处理的有机发光二极管

Qi Xie^1,2, Chuanxin Liao^1,2, Hongli Liu^1,2

¹School of Chemical Engineering and Technology, Tianjin University, Tianjin, 300072, China.

Chemistry (Weinheim an der Bergstrasse, Germany)

|May 16, 2024

概括

新的混合本地和电荷转移 (HLCT) 材料被合成为高效的蓝色有机发光二极管 (OLED). 该pPh-6M材料表现出极好的深蓝色电发光,突出了其用于先进显示技术的潜力.

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:

混合局部和电荷转移 (HLCT) 材料通过单元和三元激子利用单元和三元激子.
热的激发激发激发的激发.
对于高效的蓝色有机发光二极管 (OLED).
在单元和三元状态下,电荷转移 (CT) 和局部激发 (LE) 组件之间的平衡对于高效的反向系统间交叉至关重要.

研究的目的:

为高效的蓝色OLED设计和合成新的捐赠-接受器 (D-A) 类型HLCT材料.
研究结构修改对CT和LE组件的影响及其对光物理性质的影响.
为了评估这些材料在溶液处理的合OLED设备中的性能.

主要方法:

三种新型HLCT材料的合理设计和合成:pPh-7P,pPh-7M和pPh-6M,其中包括二胺供体和氨酸受体.
使用光物理测量和密度函数理论 (DFT) 计算,对HLCT特性进行系统的表征.
制造和测试使用合成材料处理溶液的合OLED.

主要成果:

合成的材料 (pPh-7P,pPh-7M,pPh-6M) 显示出基于结构修改的可调CT和LE比例.
pPh-6M显示了深蓝色的电发光,最大发射波长为446nm.
基于pPh-6M的OLED设备实现了最大8755cd/m2的亮度,最大电流效率为5.83cd/A,最大外部量子效率为6.54%.

结论:

该研究成功开发了用于高效蓝色OLED应用的新型HLCT材料.
与其他合成材料相比,pPh-6M具有占主导地位的1LE和3CT组件,表现出优越的OLED性能.
微调分子结构是优化HLCT材料光物理性质和设备性能的关键.

关键词:

蓝色的OLED是蓝色的OLED 库马林衍生物库马林衍生物混合的局部和电荷转移.通过溶液处理处理.和理性的分子设计.

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