n and p-type Semiconducting Metal Oxides Based Gas Sensors; Influence of Conduction Type on Sensitivity

2009 ◽  
Keyword(s):  
Metal Oxides ◽  
Gas Sensors ◽  
Conduction Type ◽  
Semiconducting Metal Oxides ◽  
P Type

scholarly journals CuxO Nanostructure-Based Gas Sensors for H2S Detection: An Overview

Chemosensors ◽  
2021 ◽  
Vol 9 (6) ◽  
pp. 127
Author(s):  
Sachin Navale ◽  
Mehrdad Shahbaz ◽  
Sanjit Manohar Majhi ◽  
Ali Mirzaei ◽  
Hyoun-Woo Kim ◽  
...  
Keyword(s):  
Metal Oxides ◽  
Gas Sensors ◽  
Noble Metals ◽  
Oil And Gas ◽  
Detection Mechanism ◽  
Reliable Detection ◽  
Electrical Sensing ◽  
Semiconducting Metal Oxides ◽  
H2s Detection

H2S gas is a toxic and hazardous byproduct of the oil and gas industries. It paralyzes the olfactory nerves, with concentrations above 100 ppm, resulting in loss of smell; prolonged inhalation may even cause death. One of the most important semiconducting metal oxides for the detection of H2S is CuxO (x = 1, 2), which is converted to CuxS upon exposure to H2S, leading to a remarkable modulation in the resistance and appearance of an electrical sensing signal. In this review, various morphologies of CuxO in the pristine form, composites of CuxO with other materials, and decoration/doping of noble metals on CuxO nanostructures for the reliable detection of H2S gas are thoroughly discussed. With an emphasis to the detection mechanism of CuxO-based gas sensors, this review presents findings that are of considerable value as a reference.

scholarly journals Trends and Advances in the Characterization of Gas Sensing Materials Based on Semiconducting Oxides

Sensors ◽  
2018 ◽  
Vol 18 (10) ◽  
pp. 3544 ◽  
Author(s):  
David Degler
Keyword(s):  
Metal Oxides ◽  
Gas Sensors ◽  
Gas Sensing ◽  
Academic Research ◽  
Spectroscopic Techniques ◽  
Characterization Methods ◽  
Fundamental Properties ◽  
Electronic Imaging ◽  
Semiconducting Metal Oxides

The understanding of the fundamental properties and processes of chemoresistive gas sensors based on semiconducting metal oxides is driven by the available characterization techniques and sophisticated approaches used to identify structure-function-relationships. This article summarizes trends and advances in the characterization of gas sensing materials based on semiconducting metal oxides, giving a unique overview of the state of the art methodology used in this field. The focus is set on spectroscopic techniques, but the presented concepts apply to other characterization methods, such as electronic, imaging or diffraction-based techniques. The presented concepts are relevant for academic research as well as for improving R&D approaches in industry.

Thin-film gas sensors based on semiconducting metal oxides

1995 ◽  
Vol 23 (2-3) ◽  
pp. 119-125 ◽  
Author(s):  
H Meixner ◽  
J Gerblinger ◽  
U Lampe ◽  
M Fleischer
Keyword(s):  
Thin Film ◽  
Metal Oxides ◽  
Gas Sensors ◽  
Semiconducting Metal Oxides
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