Lamination process encapsulation for longevity of plastic-based organic light-emitting devices

Abstract We fabricate the long-lived organic light-emitting devices (OLEDs) built on plastic substrate. Using lamination process encapsulation, we apply an adhesive multilayer of polyacrylate-based adhesive (15 μm) and Al (185 μm) as a passivation layer, which provides a barrier property necessary to prevent degradation of the device. We compare the rate of degradation and the electroluminescence (EL) to the device without the passivation layer. Lamination process encapsulation, which did not influence the EL characteristic of the device, enhanced the lifetime significantly. Driven at 27.45 mA/cm2, the encapsulated device results in a half time of 229.4 h from an initial luminance of 1840 cd/m2.