Japan-based Nitride Semiconductors has rolled out a portfolio of ultra-high power, ultra-violet LEDs which produces 3200mW at 380 nm. According to the company, the output of this LED at this wavelength exceeds all other commercial devices based on a single chip.
 
Nitride Semiconductors has also launched a range of longer wavelength cousins, such as the NS400L-6SVR, which delivers an output of 3200mW at 400nm.
 
The new range of chips combines an operating voltage of 4V with very high efficiencies. For example, driven at 800 mA, the NS380L-5SVR produces 700 mW at 380 nm, equating to an external quantum efficiency of 35 percent. Meanwhile, the 400 nm-emitting equivalent, the NS400L-5SVR, delivers an external quantum efficiency of 38.7 percent when driven at 1000 mA, and emitting 1200mW.
 
Nitride Semiconductors’ ultraviolet LEDs are 2.2 mm square - they are claimed to be the biggest on the market.