Characteristics of The PANI Thin Film Fabricated by The Electrodeposition Method and its Performance as an Alcohol Gas Sensor

Abstract In this study, PANI thin film has been fabricated and applied as an active ingredient for alcohol sensors with different types concentrations of alcohol. The method used is electrodeposition potentiostat ITO the working electrode. was successfully synthesized at a constant potential -0.4 V to +0.8 scan rate 100 mV/s. determining sensor's sensitivity done by measuring change in resistance using Four Point Probe (FPP). Morphological results SEM from showed shape nanoparticles interconnected-sponge structure grain size 35.28 nm. sensor sensing measurements based on variations concentration show that response methanol gas more significant when compared ethanol butanol gases. It proven can detect small (5 ppm). value indicates higher used, sensitivity.