Ultra Sensitive Metal Oxide Gas Sensing Elements

George Kiriakidis 1,2Kostas Moschovis 1,2Ioannis Kortidis 1

1. PEML IESL (FORTH), 100, N. Plastira str, Heraklion 70013, Greece
2. Physics Dpt, Univ. of Crete, PO Box 1527, Heraklion 71409, Greece


The structure, functionality and sensing response of metal oxide films will be reviewed with emphasis on In and Zn nanostructures as prepared by Sputtering, PLD, and Spray pyrolysis techniques. Optical, structural and electrical characterization techniques as applied for the in-depth analysis of the film response will be elaborated. Sensing response towards gases such as Ozone, NO2 and H2 will be presented utilizing conductometric and Surface Acoustic Waves (SAW) techniques at a range of temperatures and frequencies. It will be shown that sensing responses of the order of a few ppb (6ppb for ozone) at room temperature may be obtained by appropriate control of the film nanostructure.

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Presentation: Invited oral at E-MRS Fall Meeting 2009, Symposium F, by George Kiriakidis
See On-line Journal of E-MRS Fall Meeting 2009

Submitted: 2009-05-11 11:46
Revised:   2009-06-07 00:48
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