Comparative Investigating of Absorption and Sensitivity Parameters in Ammonia Gas Sensors Based on Conducting Polymers

In this work, we have investigated and compared three important parameters: resistance, absorbance, and sensitivity of the sensitive layer in the ammonia gas sensor made of conductive polymers. Using a simulation based on the Langmuir absorption model, we have examined the changes in resistance, absorbance, and sensitivity of both the pure conducting polymer and the layer doped with carbon nanotubes. We analyzed the results using Matlab software. The findings demonstrate that the addition of carbon nanotubes reduces the resistance and enhances the absorbance and sensitivity.