Influence of interlayer on the performance of stacked white organic light-emitting devices Available to Purchase

Stacked white organic light-emitting devices (WOLEDs) comprising of blue fluorescent and orange phosphorescent emissive units employing tri(8-hydroxyquinoline) aluminum $(Alq3):Mg/MoO3$ as charge generation layer are fabricated. The working mechanism of $Alq3:Mg/MoO3$ is also discussed using a simple method. We demonstrate charge-carrier separation takes place only in $MoO3$ layer. Stacked WOLED with better performance was obtained by adjusting the thickness of $MoO3$⁠. The stacked WOLED with efficiency of 39.2 cd/A has excellent color stability with the Commission Internationale de l’Eclairage coordinates only changing from (0.407, 0.405) to (0.398, 0.397) when luminance increases from 22 to $10000cd/m2$⁠.