结构简单的高效蓝色荧光器件

发布时间：2018-06-15 01:23

本文选题：热激活延迟荧光 + 有机蓝光二极管　；参考：《科学通报》2017年04期

【摘要】：热激活延迟荧光(thermally activated delayed fluorescence,TADF)材料双[4-(9,9-二甲基-9,10-二氢吖啶)苯基]硫砜(DMAC-DPS)在非掺杂型器件中展示了良好的发光特性.本文首先以DMAC-DPS作为器件的发光层,分别对其厚度以及器件的空穴传输层和电子传输层进行了优化,制备了结构简单的非掺杂型高效蓝光器件,其最大外量子效率是14.3%,最大功率效率是26.8 lm W~(-1).荧光器件在稳定性等方面具备显著的优越性且荧光材料已被广泛采用,因此我们进一步以DMAC-DPS为主体材料,蓝色荧光材料2,5,8,11-四-叔-丁基傒(TBPe)为客体材料制备了高效的TADF材料敏化蓝光器件.器件的最大外量子效率为12.7%,最大功率效率为22.9 lm W~(-1).我们的结果表明分别以TADF材料作为发光材料和主体材料可以制备高效蓝色荧光器件,这为结构简单高效蓝光器件的制备提供了一种新的途径.
[Abstract]:DMAC-DPS), a thermally activated delayed fluorescence (TADF) material, has shown good luminescence properties in undoped devices with [4 ~ (9) N] -dimethyl-9- (10) -dihydroacridine) phenyl] sulfoxide (DMAC-DPS). In this paper, DMAC-DPS is first used as the luminescent layer of the device. The thickness, hole transport layer and electron transport layer of the device are optimized, and the non-doped high-efficiency blue light devices with simple structure are fabricated. The maximum external quantum efficiency is 14.3, and the maximum power efficiency is 26.8 lm WJ ~ (-1). Fluorescent devices have obvious advantages in stability, and fluorescent materials have been widely used, so we further use DMAC-DPS as the main material. The blue fluorescent material (TBPe) was used as the guest material to fabricate the highly efficient TADF-sensitized blue light devices. The maximum external quantum efficiency and power efficiency of the device are 12.7and 22.9 Lm / W ~ (-1), respectively. Our results show that high efficient blue fluorescent devices can be fabricated by using TADF as luminescent material and as host material respectively, which provides a new way for the fabrication of simple and efficient blue light devices.
【作者单位】：西南大学物理科学与技术学院;
【基金】：国家自然科学基金(61177030,11474232)资助
【分类号】：TN383.1

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