What is UVC LED Technology?

UVC light, part of the ultraviolet spectrum with wavelengths between 200 and 280 nanometers, has long been known for its germicidal properties. Traditionally, UVC was generated using mercury vapor lamps, but recent advancements have shifted focus to light-emitting diodes (LEDs). UVC LEDs are semiconductor devices that produce UVC light when an electric current passes through them.

This technology is particularly effective for surface disinfection, where it targets microorganisms on objects like countertops, medical equipment, and electronic devices. According to recent reviews, UVC LEDs provide decontamination results comparable to or better than mercury lamps in many scenarios.

How Does UVC LED Surface Disinfection Work?

The disinfection process relies on UVC light's ability to disrupt the DNA and RNA of pathogens, preventing them from reproducing and causing infections. When UVC photons penetrate microbial cells, they create thymine dimers in DNA strands, leading to cell death or inactivation.

For surfaces, devices emit UVC light directly onto the target area. The effectiveness depends on factors like exposure time, distance, intensity (dose), and the type of pathogen. Studies show that UVC can inactivate a wide range of bacteria, viruses, and fungi without leaving residues, unlike chemical disinfectants. For instance, experiments demonstrate reduced bacterial colonies on exposed surfaces with increasing exposure times.