Title :
Minimally cooled InSb/InAlSb LED and photodiode devices applied to nitrogen dioxide detection at ppm levels
Author :
Crowder, J.G. ; Ashley, C.T. ; Elliott, C.T. ; Pryce, G.J. ; Johnson, A.D.
Author_Institution :
Dept. of Phys., Heriot-Watt Univ., Edinburgh, UK
fDate :
10/26/2000 12:00:00 AM
Abstract :
The authors report the application of room-temperature InSb-InAlSb LED and photodiode devices to the detection of nitrogen dioxide (NO2) using infrared absorption at a wavelength of 6 μm. With the photodiodes minimally cooled to -20°C for improved sensitivity, a resolution of 3 ppm for nitrogen dioxide detection is achieved using a path length of 4 m
Keywords :
III-V semiconductors; cooling; gas sensors; indium compounds; light emitting diodes; photodetectors; photodiodes; -20 C; 4 m; 6 mum; InSb-InAlSb; InSb/InAlSb LED; NO2; gas sensors; improved sensitivity; infrared absorption; minimally cooled; nitrogen dioxide detection; path length; photodiode devices; ppm levels;
Journal_Title :
Electronics Letters
DOI :
10.1049/el:20001300
