Abstract
In modern world, gas sensors play important role in many fields of technology used for air pollution, breath analysis, public safety and many others. Gas sensor based semiconductor metal oxide is mostly used in these applications because of low cost, ease-to-use, high sensitivity and lower power consumption. This paper gives an overview about the semiconductor metal oxide and reviews why using it as sensing of gases in electrical applications and then it addresses to the work mechanism of a sensor to sensing H2S gas.
Highlights
The applications based on gas sensor technology play an important role in our life, such as the detection of toxic gas, the quality of air and control of environmental [1-8].Received: July 17, 2020; Accepted: August 3, 2020Many types of sensors have been used to detection of gas but the type that based on resistivity is most used because the low cost prepared and ease operation [9-16]
Semiconducting (MO) - based gas sensor has attracted the researchers comparing with the conventional techniques because it advantages such as low cost and sensitivity and fast responsible and detection
Because of the electronic unique properties of semiconductor metal oxide nanoparticles, it used in various applications such as gas sensor, lithium battery and solar cell
Summary
The applications based on gas sensor technology play an important role in our life, such as the detection of toxic gas, the quality of air and control of environmental [1-8]. Semiconducting (MO) - based gas sensor has attracted the researchers comparing with the conventional techniques because it advantages such as low cost and sensitivity and fast responsible and detection. Because of the electronic unique properties of semiconductor metal oxide nanoparticles, it used in various applications such as gas sensor, lithium battery and solar cell. Many semiconductor metal oxides were used as gas sensor because have electric properties such as In2O3, TiO2 and SnO2. This review aimed to study the mechanisms of gas sensing using semiconductor metal oxide (MOS) and appear the effect of temperature and role of particle size in efficiency of sensing
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