A percolation model of semiconductor gas sensors with a hierarchical pore structure

A percolation model of gas sensors is proposed, on the basis of which the effect of material porosity, pore size and pore size distribution on the gas detection threshold is analyzed. It is shown that micropores exert the greatest influence on gas sensitive properties. An increase in the percolation...

Full description

Saved in:
Bibliographic Details
Published in:EAI endorsed transactions on energy web 2019-03, Vol.6 (22), p.156516
Main Authors: Pronin, I.A., Yakushova, N.D., Averin, I.A., Moshnikov, V.A., Donkova, B.V., Dimitrov, D.Tz, Georgieva, A.Ts, Nalimova, S.S.
Format: Article
Language:English
Subjects:
Chemical precipitation
fractals
gas sensor
Gas sensors
Gases
hierarchical structures
Organic chemistry
Percolation
Pore size
Pore size distribution
Porosity
Sensors
sol-gel method
Structural hierarchy
Citations: Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:A percolation model of gas sensors is proposed, on the basis of which the effect of material porosity, pore size and pore size distribution on the gas detection threshold is analyzed. It is shown that micropores exert the greatest influence on gas sensitive properties. An increase in the percolation threshold leads to an increase in the detection threshold of reducing gases. The developed percolation model is used to explain high sensitivity values of sensor structures obtained by the chemical co-precipitation method.
ISSN:2032-944X
2032-944X
DOI:10.4108/eai.22-1-2019.156516