Title :
278 nm deep ultraviolet LEDs with 11% external quantum efficiency
Author :
Shatalov, Max ; Sun, Wenhong ; Lunev, Alex ; Hu, Xuhong ; Dobrinsky, Alex ; Bilenko, Yuri ; Yang, Jinwei ; Shur, Michael ; Gaska, Remis ; Moe, Craig ; Garrett, Gregory ; Wraback, Michael
Author_Institution :
Sensor Electron. Technol., Inc., Columbia, SC, USA
Abstract :
III-Nitride based deep ultraviolet (DUV) light emitting diodes (LEDs) offer smaller size, wider choice of peak emission wavelengths, lower power consumption and reduced cost compared to mercury vapor lamps and other UV light sources. Increasing efficiency of DUV LEDs accelerates their applications in bio-agent detection, analytical instrumentation, phototherapy, disinfection, biotechnology and sensing. We report on 278 nm DUV LEDs with external quantum efficiency exceeding 10 % achieved by improvements of material quality and light extraction.
Keywords :
light emitting diodes; mercury vapour lamps; ultraviolet sources; UV light sources; bioagent detection; biotechnology; deep ultraviolet light emitting diodes; external quantum efficiency; light extraction; material quality; mercury vapor lamps; peak emission wavelengths; phototherapy; wavelength 278 nm; Instruments; Light emitting diodes;
Conference_Titel :
Device Research Conference (DRC), 2012 70th Annual
Conference_Location :
University Park, TX
Print_ISBN :
978-1-4673-1163-2
DOI :
10.1109/DRC.2012.6257013
