Experimental Spectroscopic Data of SnO₂ Powder and Films Investigated Over a Temperature Range of −193 ^°C to 400 ^°C

Powders and films composed of Tin Dioxide (SnO₂) are promising candidates for a variety of high-impact sensing applications; the material remains at high importance for demands of the industries that it would most benefit. Imaging techniques, such as atomic force microscopy (AFM) and scanning electron microscopy (SEM), were used in conjunction with X-ray diffractometer (XRD) and X-ray photoelectron spectroscopy (XPS), to assess the structure and quality of the powder and film samples. Thermal effects associated with the vibrational features were determined by Raman spectroscopy over the temperature range −193 ^°C − 400 ^°C. We have observed a red-shift in the Raman spectra for the powder sample. The SnO₂ powder peak shifts and FWHM features of spectra were consistent for both increasing and decreasing temperatures.