With AlGaN and AlGaInN, even shorter wavelengths are achievable. Near-UV emitters at wavelengths around 360–395 nm are already cheap and often encountered, connaissance example, as black light lamp replacements connaissance inspection of anti-counterfeiting UV watermarks in documents and bank annotation, and expérience UV curing. Substantially more expensive, shorter-wavelength diodes... https://en-web-directory.com/listings12535704/examiner-ce-rapport-sur-la-led