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Rational Molecular Design for Deep-Blue Thermally Activated Delayed Fluorescence Emitters

机译:深蓝色热活化延迟荧光发射体的合理分子设计

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摘要

By simple modification of the functional groups on the donor unit, the thermally activated delayed fluorescence (TADF) properties of emitters can easily be manipulated. A series of deep blue to blue emissive TADF derivatives is developed, capable of deep-blue emissions from 403 to 460 nm in toluene. Deep-blue organic light-emitting diodes (OLEDs) based on this series of TADF emitters are fabricated, resulting in an electroluminescence peak at 428 nm and a high external quantum efficiency of up to 10.3%. One deep-blue OLED has achieved the commission internationale de l'eclairage (CIE) coordinates of (0.156, 0.063), which is among the best reported TADF performances for deep-blue OLEDs with CIEy 0.07.
机译:通过简单修饰供体单元上的官能团,可以轻松操纵发射体的热活化延迟荧光(TADF)特性。开发了一系列深蓝色至蓝色发光的TADF衍生物,能够在甲苯中从403至460 nm发射深蓝色。制造了基于这一系列TADF发射器的深蓝色有机发光二极管(OLED),从而在428 nm处产生了电致发光峰,并具有高达10.3%的高外部量子效率。一种深蓝色OLED已达到(0.156,0.063)的国际照明委员会(CIE)坐标,这是CIEy <0.07的深蓝色OLED的TADF性能的最佳报道。

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