CO2 detector based on organo-siloxane supramolecular polymer

The sensor was made by thick and thin film technology. An alumina substrate 6times6times0.5 mm was used. On the substrate was screen-printed an interdigitated electrode array by Au conductive ink. The sensitive layer the organo-siloxane supramolecular polymers was dissolved in chloroform and was deposed by spin coating on the substrate over electrode in the 200 nm thickness. The sensor was tested in 100 and 1000 ppm concentration CO₂ and for 30 minutes gas exposure were obtained the voltage values of 92 mV and 970 mV for 100 ppm and 1000 ppm CO₂. The detector is composed by the sensor and electronic device of signal conditioning.