First, understand what UVC is. UV refers to ultraviolet light. UVC is the C-band of ultraviolet light, with the wavelength between 100-280nm. However, since the wavelength below 200nm is vacuum ultraviolet light, it can be absorbed by air, so the wavelength of UVC that can pass through the atmosphere is between 200-280nm.
UV can destroy the DNA (deoxyribonucleic acid) or RNA (ribonucleic acid) molecular structure of microorganisms, causing bacteria to die or not reproduce, so as to achieve the purpose of sterilization. Among all the ultraviolet rays, UVC, the short wave ultraviolet ray, has the strongest germicidal effect, so it is widely used in germicidal technology.
LED refers to the way to emit UVC. For example, traditional ultraviolet lamps have always used mercury lamps to emit light, and mercury is very dangerous. After Minamata Convention, mercury lamps have been completely prohibited. As a new type of ultraviolet sterilization, UVC LED is the only reliable alternative. Because it is purely physical sterilization and does not contain any harmful substances, the miniaturization of UVC LED elements brings more imagination to the application scenarios, many of which are impossible to achieve with traditional mercury lamps. In addition, UVC LED also has many advantages such as fast startup, more allowable switching times, and battery power supply.
In a word, UVC LED is a new, more efficient and environmentally friendly sterilization technology.