Panasonic Environmental Solutions has developed a "deep ultraviolet LED (UV-LED) module" that uses LEDs to generate ultraviolet light in the 270 nm wavelength region. The UV-LED chip is developed by the Japan Institute of Physical Chemistry and has a light source life of 1. More than 10,000 hours. Sales will begin on June 16, 2014.
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Panasonic said that deep ultraviolet light with a wavelength around 270 nm has the ability to remove bacteria, but the mainstream of the light source in the deep ultraviolet range is the cold cathode tube and the mercury lamp. Therefore, the ultraviolet light source is not only large in size, but also requires a frequency converter for lighting, and therefore requires a large installation space. In addition, there is a problem that it is easily broken due to the use of a glass material, contains mercury, generates ozone, and cannot be instantly lit. 
Panasonic's new products solve the above light source problem. The company has significantly reduced the crystal defect density of LED chips and successfully produced deep ultraviolet light with a wavelength of around 270 nm at an output power of 10 mW or more. It has been confirmed that the sterilization effect of 99.9% or more can be achieved by irradiation for 10 minutes.
Panasonic used this deep UV LED to make a sterilization module. The LED is used as a light source to achieve a thin (ie thickness of IE3.25mm), small (15mm × 25mm) design, and also has waterproof performance (IPX4), so it can also be embedded in small household appliances and domestic water equipment for residential equipment. Moreover, the product does not contain mercury, does not produce ozone, and adopts an environmentally-friendly design. 