新型有机发光二极管的设计与优化
发布时间：2019-06-04 23:54
【摘要】：有机发光二极管中关于材料的研究已经取得了巨大的成果,但是对于器件工艺以及设计思路的研究还很匮乏。本文重点进行器件制备工艺和设计思路的研究,并基于蓝色荧光配合物和绿色磷光配合物分别设计并制备单发光层、双发光层和过渡金属配合物敏化型的器件,进而研究所得器件的发光过程。分别以蓝色荧光配合物BCzVBi和绿色磷光配合物(tfmppy)2Ir(tpip)制备的器件,经过优化发光材料的掺杂浓度和各功能层厚度,最终获得高性能。所得最优化器件的具体性能参数分别为:最大外量子效率8.0%/25.3%、最大电流效率11.99/102.29 cd/A、最大功率效率10.91/88.67 lm/W和最大亮度36060/96268 cd/m2。在蓝色荧光器件中掺杂发光材料的TcTa和26DCzPPy层分别起到主导发光层和辅助发光层的作用,从而拓宽了复合区间。而在绿色磷光器件中,敏化剂分子作为电子深束缚中心促进了载流子的平衡。通过对材料的光致发光光谱及三重态能级进行研究发现,敏化剂分子并未起到主体材料26DCzPPy到发光材料(tfmppy)2Ir(tpip)之间能量传递的阶梯作用。
[Abstract]:Great achievements have been made in the research of materials in organic light-emitting diode (OLED), but the research on device technology and design ideas is still scarce. In this paper, the fabrication process and design idea of the device are studied, and the single luminous layer, double luminous layer and transition metal complex sensitized devices are designed and fabricated based on the blue fluorescence complex and the green phosphorescence complex, respectively. Furthermore, the luminous process of the device is studied. The devices prepared by blue fluorescent complex BCzVBi and green phosphorescence complex (tfmppy) 2Ir (tpip) were prepared by optimizing the doping concentration of luminous materials and the thickness of each functional layer. The specific performance parameters of the optimized device are as follows: the maximum external quantum efficiency is 8.0% 鈮，
本文编号：2493095
[Abstract]:Great achievements have been made in the research of materials in organic light-emitting diode (OLED), but the research on device technology and design ideas is still scarce. In this paper, the fabrication process and design idea of the device are studied, and the single luminous layer, double luminous layer and transition metal complex sensitized devices are designed and fabricated based on the blue fluorescence complex and the green phosphorescence complex, respectively. Furthermore, the luminous process of the device is studied. The devices prepared by blue fluorescent complex BCzVBi and green phosphorescence complex (tfmppy) 2Ir (tpip) were prepared by optimizing the doping concentration of luminous materials and the thickness of each functional layer. The specific performance parameters of the optimized device are as follows: the maximum external quantum efficiency is 8.0% 鈮，
本文编号：2493095
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