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The development of new UV-emitting LEDs is gaining significant interest, especially for bactericidal and virucidal applications. Researchers at IRIG have achieved a major breakthrough by miniaturizing a UV LED on a micrometer scale using gallium nitride nanowires.
New ultraviolet (UV) light-emitting diodes (LEDs) have been commercially available for only a few years and are actually used for various applications such as fluorescence, polymerization, catalysis, skin disease treatment and UV disinfection. Researchers at IRIG have recently succeeded in miniaturizing this type of LED at micrometer scale to fabricate UV microLEDs, based on nanowire with a diameter 100 times smaller than a hair.
This new device paves the way for new applications, such as UV pixel displays for biological detection and on-demand photolithography, or the fabrication of flexible UV-LEDs.
 Grenier V, Finot S, Valera L, Eymery J., Jacopin G. and Durand CUV-A to UV-B electroluminescence of core-shell GaN/AlGaN wire heterostructures
Applied Physics Letters 2022 Valera L, Grenier V, Finot S, Bougerol C, Eymery J., Jacopin G. and Durand C M-plane AlGaN digital alloy for microwire UV-B LEDsApplied Physics Letters 2023
CEA is a French government-funded technological research organisation in four main areas: low-carbon energies, defense and security, information technologies and health technologies. A prominent player in the European Research Area, it is involved in setting up collaborative projects with many partners around the world.