On the gas-sensing mechanism of resistive based SnO2QD gas Sensor

Authors

Shambhu Sharan Kumar Sinha, University of Engineering & Management, Kolkata, IndiaFollow
Sunita Sinha, Government Engineering College
Sohom Chakraborty, University of Engineering & Management, Kolkata, India
Nivedita Saha, University of Engineering & Management, Kolkata, India
Suparna Mitra, University of Engineering & Management, Kolkata, India
Ankita Deogharia, University of Engineering & Management, Kolkata, India
Soumi Chattopadhyay, University of Engineering and Management, Kolkata
Dhiraj Mahato, University of Engineering and Management, Kolkata,India
Utsha Saha, University of Engineering and Management, Kolkata,India

Abstract

Tin oxide (SnO2) finds extensive application in metal-oxide-semiconductor systems as a gas-sensing material, owing to its distinct physical and chemical attributes. Among these attributes, grain size stands out as a pivotal factor that significantly shapes the gas- sensing properties. An all encompassing model is introduced, encompassing the complete spectrum of gas-sensing processes involving receptor function, transducer function, and utility factor. The characteristics of the sensor are defined as dependent on factors such as grain size, width of the depletion layer, thickness of the film, density of oxygen vacancies, concentration of gas, pore dimensions, and operational temperature. This model offers a thorough mathematical elucidation of the impact of SnO2's size variations, spanning from partial depletion to volume depletion.

Recommended Citation

Sinha, Shambhu Sharan Kumar; Sinha, Sunita; Chakraborty, Sohom; Saha, Nivedita; Mitra, Suparna; Deogharia, Ankita; Chattopadhyay, Soumi; Mahato, Dhiraj; and Saha, Utsha (2024) "On the gas-sensing mechanism of resistive based SnO2QD gas Sensor," American Journal of Science & Engineering (AJSE): Vol. 4: Iss. 2, Article 3.
Available at: https://research.smartsociety.org/ajse/vol4/iss2/3