O2 AND CO2 GAS SENSING BY PURE SNO2 POLYCRYSTALINE THIN FILMS

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MAHDIZADEH ROKHI M.; ESHGHI H.

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Journal: IRANIAN JOURNAL OF SURFACE SCIENCE AND ENGINEERING Year:2011 | Volume:- | Issue:11 Page(s): 33-38

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Title

O2 AND CO2 GAS SENSING BY PURE SNO2 POLYCRYSTALINE THIN FILMS

Author(s)

MAHDIZADEH ROKHI M. | ESHGHI H. | Issue Writer Certificate

Keywords

THIN FILMSQ3

TIN OXIDEQ2

SPRAY PYROLYSISQ3

GAS SENSORQ3

OXYGENQ3

CARBON DIOXIDEQ2

Abstract

In this research we have studied three samples of pure SnO2 THIN FILMS which are deposited by SPRAY PYROLYSIS method on glass substrate. OXYGEN and carbondioxide GAS SENSOR were employed. The transmittance spectra of the samples showed that the thickness of the layers were within the nanometer scales (200-150 nm), and XRD spectra showed that as the samples become thiner the preference orientation varies from (200) to (110). The this variation of orientations was due to the variation of their thicknesses. Also crystallites sizes were decreased from 31 to 22.5 nm. The sensitivity of the samples to 2000 ppm of these gases showed that the optimum operational temperature in these samples was about 170oC and 180oC for OXYGEN and carbondioxide respectively. In addition we found that the sample with lowest thickness (150 nm) and crystallite sizes (~22.5 nm) with preferential orientation of (110) had more sensitivity to O2 compare to CO2 gas.

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APA: Copy

MAHDIZADEH ROKHI, M., & ESHGHI, H.. (2011). O₂ AND CO₂ GAS SENSING BY PURE SNO₂ POLYCRYSTALINE THIN FILMS. IRANIAN JOURNAL OF SURFACE SCIENCE AND ENGINEERING, -(11), 33-38. SID. https://sid.ir/paper/120997/en

Vancouver: Copy

MAHDIZADEH ROKHI M., ESHGHI H.. O₂ AND CO₂ GAS SENSING BY PURE SNO₂ POLYCRYSTALINE THIN FILMS. IRANIAN JOURNAL OF SURFACE SCIENCE AND ENGINEERING[Internet]. 2011;-(11):33-38. Available from: https://sid.ir/paper/120997/en

IEEE: Copy

M. MAHDIZADEH ROKHI, and H. ESHGHI, “O₂ AND CO₂ GAS SENSING BY PURE SNO₂ POLYCRYSTALINE THIN FILMS,” IRANIAN JOURNAL OF SURFACE SCIENCE AND ENGINEERING, vol. -, no. 11, pp. 33–38, 2011, [Online]. Available: https://sid.ir/paper/120997/en

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