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采用真空蒸镀的方法,制备了以ITO/2T-NATA(15nm)/NPB(25nm)/Alq3(30nm)/LiF(1nm)/Al(100nm)为基本结构的绿光器件,实验中在NPB(25nm)与Alq3(30nm)有机层界面处加入周期性不同的NPB(10nm)/Alq3(10nm)结构的有机层。通过实验测得的数据,研究了周期性的空穴传输层与发光层结合这种特殊结构对绿光器件发光性能的影响。根据实验结果,发现在有机层界面处,加入周期不同的NPB(10nm)/Alq3(10nm)层虽然会提高器件的起亮电压,但会改善器件的发光效率,而对器件的发光波长与发光区域以及发光亮度影响不大。
A green device based on ITO / 2T-NATA (15nm) / NPB (25nm) / Alq3 (30nm) / LiF (1nm) / Al (100nm) was prepared by vacuum evaporation. (10 nm) / Alq3 (10 nm) structure with different periodicities at the interface of the Alq3 (25 nm) and Alq3 (30 nm) organic layers. Based on the data measured experimentally, the effect of the periodic hole-transporting layer combined with the light-emitting layer on the luminescent properties of green devices was studied. According to the experimental results, it is found that adding NPB (10nm) / Alq3 (10nm) layers with different periods at the organic layer interface will improve the device’s light-emitting efficiency while improving the device’s luminescence efficiency and luminescence The area and the brightness of light has little effect.