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

I.A.  Pronin; N.D. Yakushova; I.A. Averin; V.A. Moshnikov; B.V. Donkova; D.Tz. Dimitrov; A.Ts. Georgieva; S.S. Nalimova

Research Article

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

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@ARTICLE{10.4108/eai.22-1-2019.156516,
    author={I.A.  Pronin and N.D. Yakushova and I.A. Averin and V.A. Moshnikov and B.V. Donkova and D.Tz. Dimitrov and A.Ts. Georgieva and S.S. Nalimova},
    title={A percolation model of semiconductor gas sensors with a hierarchical pore structure},
    journal={EAI Endorsed Transactions on Energy Web},
    volume={6},
    number={22},
    publisher={EAI},
    journal_a={EW},
    year={2019},
    month={2},
    keywords={gas sensor, percolation, sol-gel method, fractals, hierarchical structures},
    doi={10.4108/eai.22-1-2019.156516}
}

I.A. Pronin
N.D. Yakushova
I.A. Averin
V.A. Moshnikov
B.V. Donkova
D.Tz. Dimitrov
A.Ts. Georgieva
S.S. Nalimova
Year: 2019
A percolation model of semiconductor gas sensors with a hierarchical pore structure
EW
EAI
DOI: 10.4108/eai.22-1-2019.156516

I.A. Pronin¹^,*, N.D. Yakushova¹, I.A. Averin¹, V.A. Moshnikov², B.V. Donkova³, D.Tz. Dimitrov³, A.Ts. Georgieva⁴, S.S. Nalimova²

1: Department of Nano- and Microelectronics, Penza State University, Penza 440026, Russia
2: Department of Micro- and Nanoelectronics, Saint-Petersburg Electrotechnical University, Saint-Petersburg 197376, Russia
3: Laboratory of Nanoparticle Science and Technology, Department of General and Inorganic Chemistry, Faculty of Chemistry and Pharmacy, University of Sofia, Sofia 1164, Bulgaria
4: Department of Materials Science & Engineering, University of Florida, Gainesville, FL 32611, USA

*Contact email: Pronin_i90@mail.ru

Abstract

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.

Keywords: gas sensor, percolation, sol-gel method, fractals, hierarchical structures

Received: 1st Apr 2018
Accepted: 28th Jan 2019
Published: 5th Feb 2019
Publisher: EAI

: http://dx.doi.org/10.4108/eai.22-1-2019.156516

Copyright © 2019 I.A. Pronin et al., licensed to EAI. This is an open access article distributed under the terms of the Creative Commons Attribution licence (http://creativecommons.org/licenses/by/3.0/), which permits unlimited use, distribution and reproduction in any medium so long as the original work is properly cited.