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作为高性能黄色单层光有机发光二极管中电子接收单元的二甲基乙

Clément Brouillac¹, Fabien Lucas², Denis Ari¹

¹Univ Rennes, CNRS, ISCR-UMR CNRS 6226, Rennes, F-35000, France.

Small (Weinheim an der Bergstrasse, Germany)

|October 22, 2024

概括

一种新型的dimesitylborane (DMB) 主体材料,SPA-2-FDMB,显著提升了单层光有机发光二极管 (SL-PhOLED). 这种新材料实现了黄色发射装置的创纪录效率,突出显示了DMB.

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:

单层光有机发光二极管 (SL-PhOLED) 提供了简化的设备架构.
开发高性能主体材料对于推进SL-PhOLED技术至关重要.
接受电子的碎片是实现高效SL-PhOLED设备的关键组成部分.

研究的目的:

为SL-PhOLED应用引入和研究一种新的宿主材料SPA-2-FDMB.
探索 dimesitylborane (DMB) 片段作为SL-PhOLED中的接受器单元的潜力.
为了评估使用SPA-2-FDMB的黄色发射SL-PhOLED的性能.

主要方法:

基于捐赠者-螺旋受体架构的分子设计.
合成和SPA-2-FDMB宿主材料的表征.
发出黄色的SL-PhOLED设备的制造和性能测试.

主要成果:

该SPA-2-FDMB宿主材料启用了发出黄色的SL-PhOLED,其外部量子效率为8.1%,电流效率为24.9cd.A-1.1.
该设备表现出2.6V的低值电压.
取得的性能是迄今为止黄色/色发射SL-PhOLED所报告的最高性能.

结论:

模乙 (DMB) 装置显示出用于高性能SL-PhOLED应用的巨大潜力.
在SPA-2-FDMB的分子设计和能量水平对齐 (HOMO/LUMO) 有助于设备的卓越性能.
SPA-2-FDMB代表了简化OLED技术的主机材料的有希望的进步.

关键词:

双极宿主物质是双极宿主物质.一个层的光OLED.螺旋化合物是螺旋化合物中的一种.黄色的排放是黄色的排放.

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