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Efficient Nondoped Pure Blue Organic Light-Emitting Diodes Based on an Anthracene and 9,9-Diphenyl-9,10-dihydroacridine Derivative.
Chemistry - An Asian Journal ( IF 3.5 ) Pub Date : 2019-12-11 , DOI: 10.1002/asia.201901376
Xin He 1 , Shenghong Ren 1 , Hui Liu 1 , Shiyuan Zhao 2 , Futong Liu 1 , Chunya Du 1 , Jiarui Min 2 , Haiquan Zhang 2 , Ping Lu 1
Affiliation  

Organic light-emitting diodes (OLEDs) have been greatly developed in recent years owing to their abundant advantages for full-color displays and general-purpose lightings. Blue emitters not only provide one of the primary colors of the RGB (red, green and blue) display system to reduce the power consumption of OLEDs, but are able able to generate light of all colors, including blue, green, red, and white by energy transfer processes in devices. However, it remains a challenge to achieve high-performance blue electroluminescence, especially for nondoped devices. In this paper, we report a blue light emitting molecule, DPAC-AnPCN, which consists of 9,9-diphenyl-9,10-dihydroacridine and p-benzonitrile substituted anthracene moieties. The asymmetrically decoration on anthracene with different groups on its 9 and 10 positions combines the merits of the respective constructing units and endows DPAC-AnPCN with pure blue emission, high solid-state efficiency, good thermal stability and appropriate HOMO and LUMO energy levels. Furthermore, DPAC-AnPCN can be applied in a nondoped device to effectively reduce the fabrication complexity and cost. The nondoped device exhibits pure blue electroluminescence (EL) locating at 464 nm with CIE coordinates of (0.15, 0.15). Moreover, it maintains high efficiency at relatively high luminescence. The maximum external quantum efficiency (EQE) reaches 6.04 % and still remains 5.31 % at the luminance of 1000 cd m-2 showing a very small efficiency roll-off.

中文翻译:

基于蒽和9,9-二苯基-9,10-二氢ac啶衍生物的高效非掺杂纯蓝色有机发光二极管。

近年来,由于有机发光二极管(OLED)在全色显示器和通用照明方面的丰富优势,因此得到了极大的发展。蓝色发射器不仅提供RGB(红色,绿色和蓝色)显示系统的原色之一以减少OLED的功耗,而且能够产生包括蓝色,绿色,红色和白色在内的所有颜色的光。通过设备中的能量传输过程。然而,实现高性能的蓝色电致发光仍然是一个挑战,特别是对于未掺杂的器件。在本文中,我们报告了一个蓝色发光分子DPAC-AnPCN,它由9,9-二苯基-9,10-二氢ac啶和对苯甲腈取代的蒽部分组成。蒽在9位和10位上具有不同基团的不对称装饰结合了各个结构单元的优点,并赋予DPAC-AnPCN纯蓝色发射,高固态效率,良好的热稳定性以及适当的HOMO和LUMO能级。此外,DPAC-AnPCN可以应用于非掺杂器件中,以有效降低制造复杂性和成本。未掺杂的器件表现出位于464 nm的纯蓝色电致发光(EL),CIE坐标为(0.15,0.15)。而且,它在较高的发光下仍保持较高的效率。最大外部量子效率(EQE)达到6.04%,在1000 cd m-2的亮度下仍保持5.31%,显示出非常小的效率衰减。固态效率高,良好的热稳定性以及适当的HOMO和LUMO能级。此外,DPAC-AnPCN可以应用于非掺杂器件中,以有效降低制造复杂性和成本。未掺杂的器件表现出位于464 nm的纯蓝色电致发光(EL),CIE坐标为(0.15,0.15)。而且,它在较高的发光下仍保持较高的效率。最大外部量子效率(EQE)达到6.04%,在1000 cd m-2的亮度下仍保持5.31%,显示出非常小的效率衰减。固态效率高,良好的热稳定性以及适当的HOMO和LUMO能级。此外,DPAC-AnPCN可以应用于非掺杂器件中,以有效降低制造复杂性和成本。未掺杂的器件表现出位于464 nm的纯蓝色电致发光(EL),CIE坐标为(0.15,0.15)。而且,它在相对高的发光下保持高效率。最大外部量子效率(EQE)达到6.04%,在1000 cd m-2的亮度下仍保持5.31%,显示出非常小的效率衰减。未掺杂的器件表现出位于464 nm的纯蓝色电致发光(EL),CIE坐标为(0.15,0.15)。而且,它在相对高的发光下保持高效率。最大外部量子效率(EQE)达到6.04%,在1000 cd m-2的亮度下仍保持5.31%,显示出非常小的效率衰减。未掺杂的器件表现出位于464 nm的纯蓝色电致发光(EL),CIE坐标为(0.15,0.15)。而且,它在相对高的发光下保持高效率。最大外部量子效率(EQE)达到6.04%,在1000 cd m-2的亮度下仍保持5.31%,显示出非常小的效率衰减。
更新日期:2019-12-11
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