The Preparation of SnO2:F thin films-based transparent heaters by spray pyrolysis deposition technique
This paper presents the preparation of SnO2:F thin films used as transparent heaters deposited on glass substrate by using spray pyrolysis deposition technique. Precursor solution for spraying was prepared by mixing SnCl4 • 5H2O and NH4F in C2H5OH/DI water. Glass substrate temperature for spraying was varied from 250°C to 400°C. The optical, structural, morphological and electrical properties of as-deposited films were characterized by using UV-Vis spectrophotometer, X-ray diffraction technique (XRD), Scanning Electron Microscope (SEM), and four-point probe technique, respectively. The maximum value of transmittance was increased with increasing substrate temperature, over 85% in visible region for substrate temperature of 350°C. XRD results showed tetragonal structure, predominantly with (110), (101), (200), and (211) orientation. Thermal performance is shown by temperature profiles under constant voltage driven from DC power supply. It is found that heating capability of the heaters is highly dependent on glass substrate temperature.