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INTERNATIONAL JOURNAL OF SCIENTIFIC DEVELOPMENT AND RESEARCH International Peer Reviewed & Refereed Journals, Open Access Journal ISSN Approved Journal No: 2455-2631 | Impact factor: 8.15 | ESTD Year: 2016 open access , Peer-reviewed, and Refereed Journals, Impact factor 8.15 |
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| Paper Title: | Sensitivity of screen printed WO3 thick film chemiresistance gas sensor with alteration in firing temperature |
| Authors Name: | Kaveri B. Bhamare |
| Unique Id: | IJSDR2101042 |
| Published In: | Volume 6 Issue 1, January-2021 |
| Abstract: | The main aim of the study was to find the effect of firing temperature on the nature of tungsten trioxide thick film prepared by screen printing process for gas sensing application. X-Ray diffraction is used to examine the phases formed after firing. XRD result shows a mixture of monoclinic, orthorhombic phases of WO3 in the range 600°C-800°C. The morphology was analyzed by SEM-EDS. The D.C. resistance of the films was measured by half bridge method in air atmosphere in 30°C to 450°C temperature range. The WO3 films showed semiconducting nature. The temperature coefficients of resistance, activation energy, sheet resistivity and surface area to volume ratio of films were assessed at different firing temperatures. Surface area to volume ratio decides the gas sensing property of the film. The cause of the enhancement of gas sensitivity of the sample for target gas with high surface area to volume ratio was also discussed. Gas sensing property ameliorates for greater ratio. Film fired at 600°C has maximum ratio hence found to be suitable for gas sensing. |
| Keywords: | WO3, screen printing, SEM, XRD, resistivity. |
| Cite Article: | "Sensitivity of screen printed WO3 thick film chemiresistance gas sensor with alteration in firing temperature", International Journal of Science & Engineering Development Research (www.ijsdr.org), ISSN:2455-2631, Vol.6, Issue 1, page no.262 - 268, January-2021, Available :http://www.ijsdr.org/papers/IJSDR2101042.pdf |
| Downloads: | 000337067 |
| Publication Details: | Published Paper ID: IJSDR2101042 Registration ID:193585 Published In: Volume 6 Issue 1, January-2021 DOI (Digital Object Identifier): Page No: 262 - 268 Publisher: IJSDR | www.ijsdr.org ISSN Number: 2455-2631 |
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