Nichia’s Latest UV-C LED Disinfection Efficacy Proven to Combat Viruses — LED professional

While traditional UV-C technologies, such as low-pressure mercury vapor lamps, were limited to a 254 nm peak, the most efficient wavelength to disinfect bacteria and viruses is known to be 260 nm due to the peak absorption spectrum of the DNA/RNA. However, NICHIA has demonstrated that 280 nm delivers the highest virucidal power as it has a very strong irradiance, wall-plug efficiency and lifetime, all at practical operating conditions vs. many other unreasonable claims in the market. Indeed, data highlights that the virucidal power of the 280 nm LED is approximately 1.3 times (127%) that of 265 nm LEDs. The 280 nm LED also delivers a lifetime ten times longer than a 265 nm LED.

Generally, the advantageous compact size of LED-based UV-C solutions means that they can be directly integrated within disinfection applications in restricted spaces including industrial applications, water purifiers, air conditioning systems and more.

UV-C light is making a significant contribution to combatting viruses and bacteria, simplifying traditional methods. For example, to obtain a high viricidal effect (i.e. 4-log) when using an alcohol solution for disinfection (containing 77–81% ethanol), surfaces need to be sufficiently wetted with the substance or require significant effort and time, often times beyond 30 seconds. Used in conjunction with such measures, NICHIA’s 280 nm deep UV LED can offer a high viricidal effect while saving time and effort.

NICHIA’s focus on innovation is making a significant contribution to global safety and security. While the company succeeded in 1997 to develop and mass-produce deep UV LEDs, it is continuously looking to improve its products. After many years of accumulated research into the technology of crystal growth and package structures with efficient heat dissipation, NICHIA plans to announce further expansion of its UV-C portfolio soon.

Following the positive Tokushima University studies, NICHIA contributed many prototype hand-held UV irradiation devices to both the Tokushima Prefecture and Tokushima University. This exciting Press Conference and news was captured by media throughout Japan.

Further information about the Tokushima University research and NICHIA’s NCSU334B 280 nm UV-C LED solution is available from the NICHIA website. Additionally, contact your NICHIA representative or info@nichia.com for additional information.