Investigation of the Carbon Monoxide Gas Sensing Characteristics of Tin Oxide Mixed Cerium Oxide Thin Films
| Autor: | I.A. Bakhtiari, M.F. Al-Kuhaili, S.M.A. Durrani, Muhammad B. Haider |
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| Jazyk: | angličtina |
| Rok vydání: | 2012 |
| Předmět: |
Cerium oxide
Materials science thin film Inorganic chemistry Analytical chemistry chemistry.chemical_element Microscopy Atomic Force lcsh:Chemical technology Biochemistry Article Analytical Chemistry chemistry.chemical_compound X-ray photoelectron spectroscopy semiconductor gas sensor XPS lcsh:TP1-1185 Electrical and Electronic Engineering Thin film Instrumentation Carbon Monoxide CO sensor Photoelectron Spectroscopy Tin Compounds Cerium Tin oxide Atomic and Molecular Physics and Optics AFM CeO2 SnO2 Carbon film chemistry Physical vapor deposition Gases Porosity Carbon monoxide |
| Zdroj: | Sensors, Vol 12, Iss 3, Pp 2598-2609 (2012) Sensors; Volume 12; Issue 3; Pages: 2598-2609 Sensors (Basel, Switzerland) |
| ISSN: | 1424-8220 |
| Popis: | Thin films of tin oxide mixed cerium oxide were grown on unheated substrates by physical vapor deposition. The films were annealed in air at 500 °C for two hours, and were characterized using X-ray photoelectron spectroscopy, atomic force microscopy and optical spectrophotometry. X-ray photoelectron spectroscopy and atomic force microscopy results reveal that the films were highly porous and porosity of our films was found to be in the range of 11.6–21.7%. The films were investigated for the detection of carbon monoxide, and were found to be highly sensitive. We found that 430 °C was the optimum operating temperature for sensing CO gas at concentrations as low as 5 ppm. Our sensors exhibited fast response and recovery times of 26 s and 30 s, respectively. |
| Databáze: | OpenAIRE |
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