Title :
Fe2O3-PdO doped SnO2 based room temperature operable LPG sensor
Author :
Dhongade, Vipul ; More, Pooja ; Aiyer, R.C. ; Bamsaoud, Salim F.
Author_Institution :
Dept. of Electron. Sci., Savitribai Phule Pune Univ.Pune, Pune, India
Abstract :
The present paper reports room temperature operable LPG sensor based on Fe2O3-PdOdoped SnO2 thin films. Thin films were deposited by spin coating and were fired at an optimized temperature of 550°C. Single step thermal decomposition is used to get SnO2 films. The obtained films showed response from 100 to 2520 ppm of LPG. The films were characterized by XRD and UV-Vis spectroscopy. The average particle size is 13±lnm. UV-Vis absorption peak observed at 304.2nm corresponds to the band gap of -4.07 eV. The sensitivity of LPG sensor (SnO2+PdO(1%)+Fe2O3(5%) was found to be 1.88% per ppm. The response and recovery time was found to be 13 and 25 sec respectively at room temperature.
Keywords :
X-ray diffraction; energy gap; firing (materials); gas sensors; iron compounds; palladium compounds; particle size; petroleum; pyrolysis; semiconductor growth; semiconductor thin films; spin coating; tin compounds; ultraviolet spectra; visible spectra; wide band gap semiconductors; SnO2:Fe2O3,PdO; UV-Vis absorption peak; UV-Vis spectroscopy; XRD; average particle size; band gap; firing; optimized temperature; recovery time; response time; room temperature operable LPG sensor; single step thermal decomposition; spin coating; temperature 293 K to 298 K; temperature 550 degC; thin films; time 13 s; time 25 s; wavelength 304.2 nm; Actuators; Films; Gas detectors; Sensor phenomena and characterization; Temperature; Temperature sensors; LPG (Liquefied Petroleum Gas); room temperature; thin film; tin dioxide;
Conference_Titel :
Physics and Technology of Sensors (ISPTS), 2015 2nd International Symposium on
Conference_Location :
Pune
DOI :
10.1109/ISPTS.2015.7220077
