Design of high-contrast blue top-emitting organic light-emitting device with color invariance

Organic light-emitting devices (OLEDs) with high contrast are highly in demand, particularly for outdoor applications. However, lowering the reflectance of OLEDs to enhance the contrast ratio can also reduce its efficiency. This study presents in detailthe design of high-contrast blue top-emitting organic light-emitting devices with relatively high efficiency and weak viewing angle dependence.