Deep Ultraviolet Light-Emitting Diodes

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Abstract

A review is given of the current state-of-the-art in nitride-based UV light-emitting diodes. We begin with a summary of applications for these compact light sources and then detail recent improvements in the quality of epitaxial wafers and optimization of the structure design that have enabled increases in the DUV LED device area while retaining reasonable quantum efficiency at low current densities.