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Minimally cooled InSb/InAlSb LED and photodiode devices applied to nitrogen dioxide detection at ppm levels

  • J. G. Crowder
  • , T. Ashley
  • , C. T. Elliott
  • , G. J. Pryce
  • , A. D. Johnson

Research output: Contribution to journal › Article › peer-review

Abstract

The application of room temperature indium LED and photodiode devices, to the detection of nitrogen dioxide, using infrared absorption, is reported. 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. The potential applications of the photodiodes include air pollution monitoring and measuring emissions from power flues and vehicle exhausts.

Original languageEnglish
Pages (from-to)1867-1869
Number of pages3
JournalElectronics Letters
Volume36
Issue number22
DOIs
Publication statusPublished - 26 Oct 2000

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