高性能白光有机发光二极管的湿法制备及其相关材料研究

发布时间：2018-07-11 21:28

本文选题：白光 + 溶液加工　；参考：《南京邮电大学》2015年硕士论文

【摘要】：WOLED由于具有轻薄、可实现柔性、节能环保、易于大面积制备和生理友好等优势被誉为下一代照明技术,目前已有相关商业化的照明产品面世。本论文针对湿法加工WOLED研究当前存在的部分难题,提出了我们的解决思路,以推动OLED照明的产业化应用。基于PVK基聚合物互补色WOLED研究中普遍存在的发光光谱不稳定现象,我们构筑了本体系所独有的器件结构:ITO/PEDOT:PSS(35 nm)/(PVK:OXD-7:FIrpic(7:3:1)):wt%Ir(bt)2(acac)(55 nm)/TPBI(35 nm)/Ca:Ag,并对客体的掺杂比例进行优化探索,成功制得具有优良光谱稳定性的白光器件,同时器件最大亮度达50000 cd/m2,最大电流效率为25.5 cd/A,且CRI达到了72,属于同类器件中的最高水平。针对溶液加工型WOLED难以获得“双高”效果的问题,采用了光物理性能优良的三苯胺衍生物作主体材料,并将之与高性能新型客体材料及常规磷光客体搭配使用,制备了一系列互补色、三基色和四基色WOLED。性能最好的四基色器件总能量效率达33.6 lm/W,同时具有高达83的CRI和适中的CCT,为该类问题的应对提供了新的解决思路。暖白光对抗黑变激素具有较低的抑制作用,是一种生理友好的理想照明光源。我们针对湿法加工暖白光OLED当前存在的色品质不高且光谱不稳定的情况,利用自主合成的咔唑衍生物小分子作为主体,对制备出高性能的湿法加工暖白光器件进行了有益尝试。我们制备的四基色暖白光器件在100-10000 cd/m2的亮度范围内保持了2500 K以下的低色温和稳定的白光发射,CRI高达83,CIE色坐标也落在了标准暖白光点附近,同时最大流明效率达到了18.0cd/A,与传统白炽灯的水平相当。
[Abstract]:WOLED is known as the next generation lighting technology because of its advantages such as lightness, flexibility, energy saving and environmental protection, easy to be prepared in large area and physiological friendliness, etc. At present, relevant commercial lighting products are available. In order to promote the industrial application of OLED lighting, this paper puts forward our solution to some problems existing in the research of WOLED. Based on the photoluminescence instability in the study of complementary color WOLEDs based on PVK-based polymers, we have constructed the unique device structure of the system: ITO / PEDOT: PSS (35nm) / (PVK: OXD-7: FIRIC (7:3:1): wtIr (bt) _ 2 (acac) (_ 2 (acac) (_ (55 nm) / (35 nm) /% Caw _ Ag.The doping ratio of the object is optimized. A white light device with excellent spectral stability has been successfully fabricated. The maximum luminance of the device is 50000 CD / m ~ (2), the maximum current efficiency is 25.5 CD / A, and the CRI is 72, which belongs to the highest level of the similar devices. In order to solve the problem that it is difficult to obtain "double high" effect in solution processing WOLED, Trianiline derivatives with excellent photophysical properties are used as host materials, which are used in combination with new high performance guest materials and conventional phosphorescent objects. A series of complementary colors, three primary colors and four primary colors WOLED were prepared. The four primary color devices with the best performance have a total energy efficiency of 33.6 lm / W, a CRI of up to 83 and a moderate CCT, which provides a new solution to this kind of problem. Warm white light has low inhibitory effect on melanin, and it is a kind of physiologically friendly ideal lighting source. In order to solve the problem of low color quality and unstable spectrum existing in wet processing of warm white OLED, we have made a beneficial attempt to fabricate high performance wet processing warm white light devices by using small molecules of self-synthesized carbazole derivatives as the main body. Our four-color warm white light device keeps low color temperature below 2500 K in the brightness range of 100-10 000 cd/m2, and the stable white emission CRI is up to 83% CIE color coordinates, which also fall near the standard warm white light point. At the same time, the maximum lumen efficiency reaches 18.0 cdr / A, which is comparable to the level of traditional incandescent lamp.
【学位授予单位】：南京邮电大学
【学位级别】：硕士
【学位授予年份】：2015
【分类号】：TN383.1

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