Cheaper LEDs can disinfect against COVID-19

Israeli researchers have found a way to significantly cut the cost of COVID-19-killing ultraviolet lights, and they are working on LED-embedded surfaces that clean themselves.

The key finding is that LEDs emitting light with a wavelength of 285 nanometers were almost as efficient in disinfecting the virus as those with a wavelength of 265 nanometers, requiring less than half a minute to destroy more than 99.9% of the coronaviruses.