Photoresponse of spray pyrolytically synthesized magnesium-doped iron (III) oxide (p-Fe2O3) thin films under solar simulated light illumination

Abstract Stable Mg-doped iron (III) oxide thin film electrodes that exhibit p-type behavior were synthesized by spray pyrolytic methods on indium doped tin oxide-coated glass substrate. The highest photocurrent density of 0.22 mA/cm 2 was observed for Mg-doped p-Fe 2 O 3 samples prepared at the optimal substrate temperature of 390 °C at 0.2 V/SCE. The total spray time for optimized photoconversion efficiency of 0.33% was found to be at 130 s for a spray period of 10 s. X-Ray diffraction (XRD) studies revealed mixed structures (α and γ-Fe 2 O 3 and MgO) for the Mg-doped p-Fe 2 O 3 thin films.