基于扭曲咔唑-苯并呋喃[2,3-b]吡嗪荧光发射器的深蓝光和混合白光有机发光二极管。
Deep-Blue and Hybrid-White Organic Light Emitting Diodes Based on a Twisting Carbazole-Benzofuro[2,3-b]Pyrazine Fluorescent Emitter.
机构信息
Jiangsu Key Laboratory for Carbon-Based Functional Materials & Devices, Institute of Functional Nano & Soft Materials (FUNSOM), Soochow University, Suzhou 215123, China.
Institute of Organic Optoelectronics, Jiangsu Industrial Technology Research Institute (JITRI), 1198 Fenhu Dadao, Wujiang, Suzhou 215123, China.
出版信息
Molecules. 2019 Jan 19;24(2):353. doi: 10.3390/molecules24020353.
A novel deep-blue fluorescent emitter was designed and synthesized. The external quantum efficiency (η) of the blue-emitting, doped, organic light-emitting diode (OLED) was as high as 4.34%. The device also exhibited an excellent color purity with Commission Internationale de l'Eclairage (CIE) coordinates of x = 0.15 and y = 0.05. In addition, the triplet energy had a value of 2.7 eV, which is rare for an emitter with deep-blue emission, which makes it a preferred choice for high-performance white OLEDs. By optimizing the device architectures, the color of hybrid-white OLEDs could be tunable from warm white to cool white using the aforementioned material as a bifunctional material. That is, the η of the hybrid warm-white OLED is 20.1% with a CIE x and y of 0.46 and 0.48 and the η of the hybrid cool-white OLED is 9% with a CIE x and y of 0.34 and 0.33.
设计并合成了一种新型深蓝色荧光发射器。掺杂有机发光二极管（OLED）的蓝色发射外部量子效率（η）高达 4.34%。该器件还表现出优异的颜色纯度，色坐标为 x = 0.15，y = 0.05。此外，三重态能量值为 2.7eV，对于深蓝光发射的发射器来说很少见，这使其成为高性能白色 OLED 的首选。通过优化器件结构，可以使用上述材料作为双功能材料，将混合白色 OLED 的颜色从暖白色调谐到冷白色。也就是说，混合暖白色 OLED 的 η 为 20.1%，色坐标为 x = 0.46，y = 0.48，混合冷白色 OLED 的 η 为 9%，色坐标为 x = 0.34，y = 0.33。
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