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实验中共制备了五种有机量子阱结构电致发光器件,分别对这五种量子阱结构器件的电致发光特性进行了研究,分析了量子阱结构的周期数和势垒层的厚度对器件电学性能的影响.实验结果表明适当周期数的量子阱结构器件的亮度和电流效率比传统的三层结构器件的要大,主要原因是量子阱结构对电子和空穴的限制作用,这种限制作用提高了电子和空穴在发光层中形成激子和复合的概率,从而提高了发光的亮度和效率.当改变阱结构器件中势阱层的厚度时,也会对器件的亮度和效率产生影响,采用适当的势阱层厚度能够提高器件的亮度和效率.
Five organic quantum well structure electroluminescent devices were prepared in the experiment. The electroluminescent properties of the five quantum well structure devices were studied respectively. The effects of the number of cycles of the quantum well structure and the thickness of the barrier layer on the device electrical The experimental results show that the quantum efficiency of the quantum well structure device with the appropriate number of cycles is larger than that of the traditional three-layer structure device, mainly due to the limitation of electrons and holes by the quantum well structure Increases the probability of electrons and holes forming excitons and recombination in the light-emitting layer, thereby increasing the brightness and efficiency of light-emitting When the thickness of the well layer in the well structure device is changed, it also affects the brightness and efficiency of the device , The appropriate well layer thickness can improve the brightness and efficiency of the device.