Crystal IS Says Ultraviolet LEDs Can Replace Mercury-based Lamps
Crystal IS, Inc., a developer of ultraviolet light emitting diodes (UVC LEDs), has revealed devices demonstrating world record efficiency, power and lifetime at the optimal germicidal wavelength, 250nm.
In recently-published testing results, Crystal IS demonstrated that its LEDs have the performance necessary to replace widely used mercury-based disinfection lamps. The diodes are fabricated on a proprietary Aluminum Nitride (AlN) substrate.
“Previous efforts to develop practical LEDs at this wavelength have proven to be very difficult,” said Crystal IS Chief Technology Officer Leo Schowalter. “Most workers in the field have used conventional substrates, such as sapphire as the starting material, and have struggled to produce commercially viable lifetime and power results. Today we are demonstrating that we have overcome many of those issues.”
The UVC LEDs developed by Crystal IS operate at the optimal germicidal wavelength, and their proven efficacy, coupled with low power requirements, small size, and longer lifespan, make the diodes ideal for use in water and air sterilization products. Initial applications will include residential and office point-of-use systems such as water coolers and counter-top systems providing cleantech alternatives to bottled water. The technology roadmap also includes large-scale applications in industrial and municipal purification, where long-lasting, energy-efficient LEDs are ideal replacements for existing mercury-based light sources.
“We are now moving into our next stage of evolution as we shift our focus from research orientation to technology improvement and commercialization,” said Steven Berger, Ph.D., chief executive officer. “We are expanding our investor and partner base to take a prime position in this emerging market.”