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The impact of doping on the gas sensing properties of Metal Oxide Semiconductors (MOSs) is studied in this review work. It gives a detailed comparison of several characteristics (sensor response, sensitivity, selectivity, response time, and recovery time) that influence the performance of MOS-based gas sensors. The changes in MOS materials used for gas sensing induced by dopants or impurities are discussed in this paper. Dopants change the microstructure and morphology, electrical characteristics, electronic structure, crystalline lattice, crystallite size, surface area, and band gap of metal oxide semiconductors, hence improving their properties for gas sensing applications. Dopants can cause MOS flaws by producing oxygen vacancies or creating solid solutions in some conditions. These flaws improve the gas sensing properties, which have been briefly discussed. Finally, the current review paper explains the gas sensing mechanism of pure and doped MOSs for oxidising and reducing gases.
Keywords:
Doping, Metal Oxide Semiconductors, Crystallite size, Surface area, Sensors.
Cite Article:
"Impact of Doping on Gas Sensing Properties of Metal Oxide Semiconductor: A Review", International Journal of Science & Engineering Development Research (www.ijrti.org), ISSN:2455-2631, Vol.8, Issue 10, page no.189 - 196, October-2023, Available :http://www.ijrti.org/papers/IJRTI2310028.pdf
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000205083
ISSN:
2456-3315 | IMPACT FACTOR: 8.14 Calculated By Google Scholar| ESTD YEAR: 2016
An International Scholarly Open Access Journal, Peer-Reviewed, Refereed Journal Impact Factor 8.14 Calculate by Google Scholar and Semantic Scholar | AI-Powered Research Tool, Multidisciplinary, Monthly, Multilanguage Journal Indexing in All Major Database & Metadata, Citation Generator