Microcavity top-emitting organic light-emitting devices integrated with diffusers for simultaneous enhancement of efficiencies and viewing characteristics

Abstract

We show that integrating diffuser films with microcavity top-emitting organic light-emitting devices (OLEDs) provide a convenient approach for simultaneously achieving large quantum- efficiency enhancement (1.38 times compared to top-emitting devices without diffusers and 2.1 times compared to conventional bottom-emitting devices) and improving viewing characteristics (more saturated/stable colors over angles, emission patterns more Lambertian, pixel sharpness remained) of top-emitting microcavity OLEDs for display applications. Most importantly, the fabrication of the diffuser films is simple and effective. These features may make it attractive for use in enhancing OLED performances in various applications.