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利用荧光材料PT-01,PT-86,PT-05作为黄色荧光客体,蓝色荧光客体以及荧光母体制备了一种基于连续性掺杂结构的全荧光白光有机电致发光器件.其发光层为主体/客体薄层/主体/客体薄层···交替蒸镀的重复单元.通过优化发光层中主体的厚度并检测发光层中单线态激子的分布,将黄、蓝两种客体染料生长在发光层中适当的位置,得到了高效且光谱稳定的全荧光白光器件.其最大电流效率为11.2 cd/A,亮度在159—20590 cd/m2范围内色坐标仅有(±0.004,±0.005)的改变.基于这种连续性掺杂结构制备的器件,其性能不但可以达到传统主-客体共掺结构所制备的器件的性能,而且具有较高的可重复性,更适合产业化大批量生产.
Fluorescent materials PT-01, PT-86, PT-05 as a yellow fluorescent object, a blue fluorescent object and a fluorescent host were prepared based on a continuous doping structure of a fully fluorescent white organic electroluminescent device. The light-emitting layer was Host / guest thin layer / host / guest thin layer · Alternating vapor deposition repeating unit The yellow and blue guest dyes are grown by optimizing the thickness of the host in the light emitting layer and detecting the distribution of singlet excitons in the light emitting layer In the light-emitting layer in the appropriate position, we have obtained an efficient and stable white light full-white device with a maximum current efficiency of 11.2 cd / A and a color coordinate of only ± 0.004, ± 0.005 in the range of 159-20590 cd / m2 ) Based on this continuous doping structure of the device prepared, its performance can not only achieve the performance of the device prepared by the traditional host - guest co-doped structure, but also has high repeatability, more suitable for industrial mass production produce.