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Improving the thermal management of UVC LEDs
출처
COMPOUND SEMICONDUCTOR
발행일
2017-10-31
분야분류
IT소재부품, 해외동향, 전자정보디바이스, LED, IT부품정보, IT부품정보 네트워크, 부품, GreenIT,
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OVER THE YEARS mankind has come up with a variety of methods for sterilising objects, surfaces and consumables; from heating, to the use of chemicals, to dehydration. It has long been understood that natural sunlight can act as a sterilising agent, albeit a relatively weak one. Experiments in the late 19th century demonstrated that water left for a long period in sufficiently direct sunlight would remain free of bacterial growth. It was later discovered that the cause of this sterilising effect was the ultraviolet C-band (UVC) light present in natural sunlight. Today we can generate UVC artificially, and with a much greater intensity than is present in ordinary sunlight. Such UVC-emitting devices can provide a highly effective means of sterilising different materials. All UVC disinfection devices, regardless of their size or specific technology, work on the same basic principle: UVC devices emit light in the ‘germicidal range’ of 200 nm to 280 nm, a spectral domain that literally ‘breaks apart’ the genomes of bacteria, rendering the bacteria inert and therefore sterilising any surface the UVC light irradiates.