Journal
SENSORS
Volume 22, Issue 4, Pages -Publisher
MDPI
DOI: 10.3390/s22041530
Keywords
impedance spectroscopy; gas sensor; fractal; percolation; zinc oxide; porous silicon; adsorption gas sensors
Funding
- Development program of ETU LETI [075-15-2021-1318]
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Approaches are being developed to create composite materials with a fractal-percolation structure on intercalated porous matrices for increasing the sensitivity of gas adsorption sensors. Porous silicon, nickel-containing porous silicon, and zinc oxide have been synthesized as materials for such structures. Impedance spectroscopy analysis shows that the obtained materials exhibit high sensitivity to organic solvent vapors and can be used in gas sensors. A proposed model explains the high sensitivity and inductive nature of impedance at low frequencies by considering the structural features and fractal-percolation properties of the obtained oxide materials.
Approaches are being developed to create composite materials with a fractal-percolation structure based on intercalated porous matrices to increase the sensitivity of adsorption gas sensors. Porous silicon, nickel-containing porous silicon, and zinc oxide have been synthesized as materials for such structures. Using the impedance spectroscopy method, it has been shown that the obtained materials demonstrate high sensitivity to organic solvent vapors and can be used in gas sensors. A model is proposed that explains the high sensitivity and inductive nature of the impedance at low frequencies, considering the structural features and fractal-percolation properties of the obtained oxide materials.
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