On the selectivity of nanostructured semiconductor gas sensors

P. Heszler, R. Ionescu, E. Llobet, L. F. Reyes, J. M. Smulko, L. B. Kish, C. G. Granqvist

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34 Citations (Scopus)


Different methods are presented for improving chemical selectivity and sensitivity of semiconductor gas sensors consisting of nanostructured thin films. Pure and doped WO3 nanoparticles, forming nanoporous layers, are used as test material. The chemical selectivity is increased by applying different operating temperatures, using temperature modulation and pattern recognition methods, and by a fluctuation enhanced spectroscopy technique. The selectivity improvement of a fluctuation enhanced sensor is compared to that of a classical resistive sensor.

Original languageEnglish
Pages (from-to)4331-4335
Number of pages5
JournalPhysica Status Solidi (B) Basic Research
Issue number11
Publication statusPublished - Nov 1 2007

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics

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    Heszler, P., Ionescu, R., Llobet, E., Reyes, L. F., Smulko, J. M., Kish, L. B., & Granqvist, C. G. (2007). On the selectivity of nanostructured semiconductor gas sensors. Physica Status Solidi (B) Basic Research, 244(11), 4331-4335. https://doi.org/10.1002/pssb.200776183