利用黑阳极提高顶发射OLEDs对比度

Improving The Contrast of Top-emitting Organic Light-emitting Diodes with Black Anode

通过在阳极Al上面交替沉积Ag和V2O5,利用它们对光的吸收,制成了低反射导电的黑阳极,在可见光范围内反射率处在20%~5%的范围内。利用黑阳极制成的高对比度顶发射器件仍具有很好的电学特性,计算表明,在照度140lx下亮度为200cd/m2时,器件对比度为50∶1,而标准器件的对比度为3.2∶1,提高近16倍。

Conductive black layer made of alternating vanadium pentoxide （V200/ silver （Ag） layers are added on the anode in top-emitting organic light-emitting devices for improving contrast. And its optical reflectance within the visible spectral range is between 20%-5%. The contrast of the device utilizing the conductive black layer increases 16 times at 200cd/m2 under 140 lx ambient illumination.