Resistance-Time Characteristics of MEH-PPV/Si Device for Gas Sensing Applications


In this work, MEH-PPV/Si and MEH-PPV/PS at different current densities have been synthesized for NO2 gas sensor. The sensitivity and speed response at different operating temperatures (RT, 100°C, 200°C). The study showed that the maximum sensitivity to NO2 gas for MEH-PPV/Si sensor is 16% at RT, and the maximum sensitivity to NO2 gas is 74% at 200°C. Results show that MEH-PPV/PS has better sensitivity toward nitrogen dioxide gas compared to MEH-PPV/Si.