制备了一种采用多层氧化物复合阴极的透明OLED,器件结构为:ITO/ MoO3( 10 nm) /NPB( 60nm)/Alq3(65 nm)/ Al(1 nm)/ MoO3(1 nm)/Al(X nm) /MoO3(30 nm).所采用的复合阴极结构为MoO3/Al/ MoO3 (MAM),同时在复合阴极(MAM)与电子传输层(Alq3)中间插入一层厚度为1 nm的Al中间层,该薄Al层一方面提高了电极与有机层间界面的平整度,同时增强了电极的导电性；另一方面,在电子传输层与中间层Al薄膜之间形成了良好的欧姆接触,提高了电子的注入能力.改变MAM结构中Al的厚度,获得该透明OLEDs的最佳性能,在Al的厚度为18 nm时器件亮度最高,为2 297 cd/cm2.
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