scholarly journals Finite Element Analysis of Film Stack Architecture for Complementary Metal-Oxide–Semiconductor Image Sensors

Sensors ◽  
2017 ◽  
Vol 17 (5) ◽  
pp. 1004 ◽  
Author(s):  
Kuo-Tsai Wu ◽  
Sheng-Jye Hwang ◽  
Huei-Huang Lee
Keyword(s):  
Finite Element Analysis ◽  
Finite Element ◽  
Metal Oxide ◽  
Complementary Metal Oxide Semiconductor ◽  
Image Sensors ◽  
Metal Oxide Semiconductor ◽  
Oxide Semiconductor ◽  
Element Analysis

scholarly journals Simulation of gas sensing mechanism of porous metal oxide semiconductor sensor based on finite element analysis

2021 ◽  
Vol 11 (1) ◽  
Author(s):  
Songlin Li ◽  
Min Zhang ◽  
Hai Wang
Keyword(s):  
Finite Element Analysis ◽  
Finite Element ◽  
Metal Oxide ◽  
Gas Sensors ◽  
Metal Oxide Semiconductor ◽  
Oxide Semiconductor ◽  
Comsol Multiphysics ◽  
Sensor Signal ◽  
Element Analysis ◽  
Oxygen Ions

AbstractIn recent years, finite element analysis is increasingly adopted to simulate the mechanism of metal oxide semiconductor (MOS) resistive gas sensors. In this article, the chemical reaction engineering module in the COMSOL Multiphysics tool is used to describe the dynamic equilibrium process of oxygen ions in the sensor. The boundary conditions of temperature transfer, conductivity model, and mass transfer are applied to simulate the convection, diffusion, and penetration processes. The response of the sensor at different temperatures (445 K–521 K) and different target gas concentrations (1–500 ppm) is simulated. In this paper, the dynamic model of oxygen ions is used creatively as a bridge between gas concentration and sensor response instead of the traditional direct parameter fitting method. The simulated result of the surface oxygen ion control and permeability control model of the MOS gas sensor shows a good agreement with the real sensor. For explaining the principle of metal oxide semiconductor gas sensors simulations has been performed on COMSOL Multiphysics software. The proposed method in this paper is based on the underlying transfer logic of the sensor signal, it is expected to predict the sensor signal and assist the sensor design.

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