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Deep UV LEDs Have Highest Output Power

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Dowa announces 90mW LEDs with a peak wavelength of 310 nm for resin curing and medical applications

Dowa Electronics Materials has successfully developed a deep ultraviolet LED chip, which it says feature the world’s highest output power of 90mW, with a peak wavelength of 310 nm, and dimensions of 1 mm × 1 mm.

Deep ultraviolet lights with a wavelength of 310 nm are used for curing and skin therapy. Replacing conventional mercury and excimer lamps with these LEDs enables equipment to be smaller and mercury-free. With the advantages of long life time and power saving, this product is expected to find new applications.

Combining a high-quality AlN template with unique crystal growth technology, Dowa has been prepared for a mass production for deep ultraviolet LED chips, which boast the world’s highest output power in the disinfection wavelength of 280 nm.

For the wavelength of 310 nm, combining this technology and the fine-structured sapphire substrate developed by Oji Holdings Corporation, Dowa proceeded to improve luminous efficiency, enabling a 20 percent higher output power compared to current products, resulting in an output power of 90 mW, the highest in the world for the wavelength of 310 nm.

It will begin to mass-produce the newly developed deep ultraviolet LEDs with the wavelength of 310 nm in April 2018.


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