Researchers achieve breakthrough in development of ultraviolet light-emitting diodes
IT ALL STARTS HERE — Andy Allerman is the Sandia scientist who grew the new UV LED materials. (Photo by Randy Montoya)
NEW UV LEDs — Sandia researcher Mary Crawford tests the output of an ultraviolet light-emitting diode developed by a team that set new records. (Photo by Randy Montoya)
Researchers at Sandia National Laboratories developing ultraviolet (UV) light-emitting diodes (LEDs) recently demonstrated two deep UV semiconductor optical devices that set records for wavelength/power output. One emits at a wavelength of 290 nanometers (nm) and produces 1.3 milliwatts of output power, and the other emits at a wavelength of 275 nm and produces 0.4 milliwatts of power.
"Emission wavelengths of 275 to 290 nm with such high power outputs is a major breakthrough in UV LEDs development," says Bob Biefeld, manager of Sandias Chemical Processing Science Department. "Only a handful of research groups around the world have come anywhere close."
Chris Burroughs | Sandia National Laboratories
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