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Nissan installed in 2015 began mass production of deep ultraviolet LED
NIKKISO will begin mass production of deep-UV LEDs with wavelengths from 255 to 350 nm in the spring of 2015. The company expects environmental and environmental fields such as sterilization and skin treatment, detection and chemical decomposition, and resins. There is a need to replace mercury lamps in industrial fields such as hardening and bonding. Nikkiso will produce deep-UV LEDs at its new plant in Baishan City, Ishikawa Prefecture, Japan, with an initial production capacity of 1 million units per year. Nikkiso is a large-scale enterprise that produces industrial pumps and other products. It has long started to develop deep-UV LEDs as a new business. In order to convert the research results of the AlGaN-based LEDs of the Nobel Prize winners in 2014, Akisaki and Amano, into a product, the famous university of Japan founded the venture company Chuangguang Science in 2006. From the beginning of the company, the Japanese machine It was funded by the equipment and was incorporated into a subsidiary in 2012. That is to say, after 2006, Nikkiso was instructed by two seniors of Akasaki and Amano in the form of joint research. The deep ultraviolet LED enlarges the band gap by adding Al to the substrate GaN, and obtains a shorter emission wavelength than the blue LED (having a wavelength of about 450 nm). Deep ultraviolet light can cause dysfunction of DNA having an absorption peak at 260 to 270 nm, and thus can kill most of the bacteria. In addition, it can also be used for resin hardening and inspection and measurement for objects that are difficult to analyze at the original wavelength. At present, there are still very few companies that have already started producing deep-UV LEDs. Nikkiso has begun to provide deep UV LED monitoring functions as an option for artificial dialysis equipment with the highest market share in Japan. The dialysate waste liquid flowing into the pipe of the device is continuously irradiated with deep ultraviolet light, and the change in absorbance is measured to grasp the progress of waste removal. In the medical field, it is also expected to be applied to skin treatment using ultraviolet rays having a wavelength of 308 nm. At present, the standard products of Japanese-made deep-UV LEDs have three kinds of emission wavelengths of 265nm, 285nm and 300nm. The company also intends to provide customized products according to customers' requirements. The output with a wavelength of 285 nm and 300 nm at an input current of 350 mA is 30 mW, and the output with an emission wavelength of 265 nm has an output power of 12 mW at an input current of 350 mA. The luminous efficiency is not disclosed, but the light conversion efficiency is only a percentage. There are still a lot of room for improvement. In addition to the separate devices in the SMD and TO-46 packages, the product offerings are also intended to provide modules such as flow sterilizing modules. Nikkiso also intends to equip the product to one of the company's flagship product wastewater treatment plants.