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

fYear

2012

fDate

18-20 June 2012

Firstpage

255

Lastpage

256

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;

fLanguage

English

Publisher

ieee

Conference_Titel

Device Research Conference (DRC), 2012 70th Annual

Conference_Location

University Park, TX

ISSN

1548-3770

Print_ISBN

978-1-4673-1163-2

Type

conf

DOI

10.1109/DRC.2012.6257013

Filename

6257013