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研究了耦合微腔结构的有机发光器件的光学和电致发光性能。通过将被动腔作为底部反射镜的方法,简化了耦合微腔的光学和发光性能的模拟,所得到的结果与实验符合得较好。在相同电流密度下与同样结构的普通OLED相比,耦合腔OLED的光谱强度在502 nm处增强了3.6倍,在550 nm处增强了5.6倍,光谱积分强度增加了0.5倍。普通OLED的最大电流效率和亮度是4.2 cd/A和13 600 cd/m2。而耦合腔OLED则为7.0 cd/A和22 660 cd/m2。这种结构的器件出射光更集中于腔轴方向,有利于设计开发较高效率的有机激光器件。
The optical and electroluminescent properties of organic light-emitting devices coupled with microcavity structures were studied. The simulation of the optical and luminescent properties of the coupled microcavity is simplified by using the passive cavity as the bottom reflector. The obtained results are in good agreement with the experiment. At the same current density, compared with the conventional OLED with the same structure, the spectral intensity of the coupled cavity OLED increased by 3.6 times at 502 nm, 5.6 times at 550 nm, and the integrated intensity of the spectrum increased by 0.5 times. The maximum current efficiency and brightness of normal OLEDs are 4.2 cd / A and 13 600 cd / m2. While the coupling cavity OLED is 7.0 cd / A and 22 660 cd / m2. This structure of the device is more focused on the emission axis of the cavity axis direction is conducive to the design and development of more efficient organic laser devices.