Project information
- Category : Electronics Device, Physics
- Team members : Amit Barman, Aditya Sanyal, Ajeet Paswan and Aparna Sadhukhan
- Project completion date : 10 May, 2025
- Project URL : click here for report, click here for presentation file
Short Details and Specifications
The report provides a detailed explanation of the design process, simulation setup, results, and comparisons with conventional silicon BJTs. Simultaneously, this report also presents the design, simulation, and performance analysis of a BJT-based gas sensor with enhanced selectivity and sensitivity, developed using Silvaco software. The sensor is developed using titanium dioxide (T iO2) material, which plays a pivotal role in the detection of target gases. A novel Adsorption-Desorption model has been proposed to describe the interaction between the gas molecules and the T iO2 surface, allowing for a more accurate prediction of sensor behaviour. The mathematical derivation of the relevant equations governing the sensor's response is also provided, focusing on factors such as adsorption kinetics, charge transfer, and surface reactivity. Simulations conducted on the device demonstrate significant improvements in sensitivity when compared to conventional gas sensors. These enhancements are attributed to the optimized BJT architecture and the tailored T iO2 adsorption characteristics.