Nanophotonic radiative decay rate engineering for stable, phosphorescent emission of blue light

Novel OLEDs with higher photoluminescence stability Invention Summary: Organic light-emitting diodes (OLEDs) are an emerging display and lighting technology, especially for small-sized displays such as cell phones and watches. Blue phosphorescent OLEDs are very energy efficient but their stability is too low for commercial use. Instead, lower level fluorescent materials are used for the blue components in OLEDs in the market to meet the need. Thus, there is need for new improved produtcs supporting blue phosphorescent OLEDs with higher stability. Rutgers researchers have invented a novel technique to employ extensive radiation rate engineering provided by photonic and plasmonic nanostructure to increase the stability of blue-light-emitting materials. Specifically, the radiative lifetimes of blue phosphorescent organic materials are shortened using the high local density of optical states provided by nanophotonic structures. The novel approach to increase the stability of efficient, blue, triplet-harvesting, light-emitting materials improves the stability of blue phosphorescent OLEDs for  lighting applications by exploiting the radiative decay rate enhancement feature, thereby improving the stability of blue phosphorescent OLEDs. Advantages: Increased stability and efficiency of blue OLEDs. Increased device operational lifetime by increasing the phosphorescence radiative decay rate. Market Applications: Improve the stability of blue phosphorescent OLEDs. Stabilizing phosphorescent OLED emission, stabilizing inorganic phosphor emission. Intellectual Property & Development Status: Patent pending. Available for licensing and/or collaboration.