Investigations on The Effect of Cd Dopant on The Properties of 2D Nanostructured Vanadium Oxide Thin Films

Abstract

AbstractThe structural, morphologic, and photosensitive characteristics of pure and Cd‐doped V2O5 thin films grown by spray pyrolysis are investigated in this work. To stabilize the precursor, glycine is added during preparation. The choice of Cadmium (Cd) as a dopant is made with Vanadium's ionic radius compatibility in consideration. X‐ray Diffraction (XRD) measurements show that the orthorhombic structure does not alter with the addition of Cd dopant. The morphological studies reveal that the surface roughness of synthesized V2O5 increases with dopant concentration. Investigation of field emission scanning electron microscope (FESEM) images indicate that as the dopant concentration increases, the produced film's particle size reduces and hence It is suitable for gas sensing applications. UV–vis spectroscopy is employed to investigate the influence of doping on the absorbance, transmittance, and optical energy gap of the deposited thin film. The material can be taken into account for photovoltaic applications, as the investigations demonstrate an improved transmittance rate, lower absorption rate, and an increase in the optical bandgap in the visible spectra.