Top-emitting deep-UV LED reaches 6.5% wall-plug efficiency
Research

UV / IR

Top-emitting deep-UV LED reaches 6.5% wall-plug efficiency

Researchers at Japan's NICT report the first deep-ultraviolet LEDs that emit through the top of the chip, not the substrate. Ring-shaped micro-electrodes and hafnium oxide nanostructures let the 275 nm chip turn up to 6.5% of its electrical input into UV light (wall-plug efficiency), 1.35 times a…

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