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研究过渡层结构对有机薄膜电致发光器件性能的影响。分别以铟、锡的氧化物 ( indium- tin- oxide,ITO)为阳极 ,以镁银合金 ( Mg:Ag)为阴极 ,用真空热蒸发法制备了结构为 ITO/ Cu Pc/ TPD/ Alq3/ Mg:Ag和 ITO/ TPD/ Alq3/ Mg:Ag的两类器件 ,并测定了器件的衰减曲线、发光光谱以及亮度—电压特性曲线。结果显示 :铜酞菁过渡层的使用虽然改善了器件的稳定性 ,但是却增大了器件的启亮电压 ,而且器件最大发光强度和最大光视效能也降低了。结果表明 :在高稳定性和高亮度、高光视效能不可兼得的时候 ,需要通过选择过渡层材料 ,优化制备工艺 ,获得一个最佳平衡值
The effect of transition layer structure on the performance of organic thin film electroluminescent device was studied. The structures of ITO / Cu Pc / TPD / Alq3 / ITO were prepared by vacuum thermal evaporation using indium tin oxide (ITO) as anode and magnesium silver alloy (Mg: Ag) as cathode. Mg: Ag and ITO / TPD / Alq3 / Mg: Ag. The decay curve, the luminescence spectrum and the brightness-voltage curve of the devices were also measured. The results show that although the use of copper phthalocyanine transition layer improves the stability of the device, it increases the turn-on voltage of the device, and the maximum luminous intensity and the maximum luminous efficacy of the device are also reduced. The results show that: in the high stability and high brightness, high optical performance can not have both, you need to select the transition layer material, optimize the preparation process, to obtain an optimal balance