Temperature modulation in semiconductor gas sensing

A review of semiconductor gas sensor literature pertaining to the use of temperature modulation techniques is presented. The temperature dependence of sensor conductance is discussed, along with transient and cyclic modulation techniques for improving sensitivity and selectivity of sensors in the analysis of single gases and multi-component gas mixtures.

Andrew Lee graduated with a Bachelor of Applied Science (Hons.) from the University of Tasmania in 1997, and is currently studying for his PhD in the School of Applied Science at the same institution. His research project examines the applications of temperature modulation of semiconductor gas sensors to quantitative analysis of gas mixtures.

Brian Reedy received his PhD in inorganic chemistry from the University of Sydney in 1991, and currently lectures in chemistry in the School of Applied Science at the University of Tasmania. His main areas of interest are vibrational spectroscopy, inorganic chemistry and semiconductor gas sensors (temperature modulation and characterisation of sensor surface chemistry).

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