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In the work, heterostructure and heteropore size based on SnO2 are fabricated by the 2-D colloidal crystal template method, and the effects of morphological richness and pore size of ordered… Click to show full abstract
In the work, heterostructure and heteropore size based on SnO2 are fabricated by the 2-D colloidal crystal template method, and the effects of morphological richness and pore size of ordered porous films on gas-sensitive properties were systematically investigated. The sensor based on ordered porous films possesses excellent fast response, stability, and detection limit down to 1 ppm to ethanol. To explain the sensing mechanism, a novel multiphysics field-coupled analysis method, such as electrical and hydrodynamic, was used to quantify the gas adsorption on the gas-sensitive film surface and the internal current density distribution. The results demonstrate that the simulation can explain the experimental phenomena well.
Journal Title: IEEE Transactions on Instrumentation and Measurement
Year Published: 2022
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