Panasonic maximum power ultraviolet LED sterilization lamp miniaturization

Japan Institute of physical chemistry and Matsushita Electric announced that with the wavelength of 282nm UV LED, the world's largest power 10.6mW room temperature continuous luminescence has been confirmed. Thereby, the miniaturization of germicidal lamp for killing Escherichia coli, etc. can be realized. Prior to the 280nm wavelength region, the maximum power for the University of South Carolina research group 8mW. The UV LED added a few percent indium (In) in the N (Al), gallium (Ga) and nitrogen (as) semiconductors. The addition of In increases the hole concentration of P type semiconductor, and the power is increased by about 5 times. In addition, by adding the composition ratio of Al to more than 50%, and the method of injecting Si into the vector well layer, the internal quantum efficiency of the original in the wavelength region of 280nm is increased to (above) more than 80%. The results have been from July 6, 2008 to 9 in the Izu Shuzenji organized the "Second International Symposium on nitride semiconductor crystal growth (ISGN-2)" issued.

Source: Nikkei BP