制备了以Al/MoO3为复合阳极的有机电致发光器件,其结构为:Al/MoO3/NPB/Alq3∶C545T(x%)/Alq3/LiF/Al。比较了不同掺杂浓度条件下OLED器件的电致发光特性。当C545T掺杂浓度为8%时,主客体间的能量转移最充分,器件的启亮电压为2.75V,器件在13V时获得最高亮度为27 000cd/m2,发光效率为6.97cd/A。用Fowler-Nordheim隧道效应理论和载流子注入机制,分析了以Al/MoO3为复合阳极的OLED器件性能。 Al / MoO3 / NPB / Alq3:C545T (x%) / Alq3 / LiF / Al was prepared by using Al / MoO3 as the composite anode. The electroluminescent properties of OLED devices under different doping concentrations were compared. When the doping concentration of C545T is 8%, the energy transfer between the host and the guest is the best, with a device starting voltage of 2.75V and a maximum brightness of 27000cd / m2 at 13V and a luminous efficiency of 6.97cd / A. The Fowler-Nordheim tunneling theory and carrier injection mechanism were used to analyze the performance of OLED devices with Al / MoO3 as the composite anode.