Calculation of the pyroelectric coefficient and the Debye radius of SnO2–Fe2O3 pyroelectric composite deposited via spray pyrolysis
The Debye radius (rD) is a useful parameter that describes the performance of a semiconductor material to be used as sensors and transducers. Tin oxide-Ferrous oxide (SnO2-Fe2O3) composite films were fabricated on glass substrates with varying temperatures of 300, 325, and 350°C. Scanning electron microscopy showed an onset of crystallite formation for films deposited at temperatures higher than 300°C. X-ray diffractometry showed an increase in crystallite size with increasing deposition temperatures. Fitting the voltage response with sigmoidal functions as well as its linearization led to the calculation of rD and the pyroelectric coefficient pV.