Abstract
The research study reveals metallic co-doping of Zinc(Zn) and Magnesium (Mg) on vanadium pentoxide(V2O5) thin film nanostructures by spray pyrolysis deposition technique. The studyfindings have been made into how the morphological, structural and optical properties of the materials change for the different co-doping percentage of 1%,3%,5%10% of Zn-Mg. X-ray diffraction (XRD)clearly showsan orthorhombic crystalline structure with polycrystalline nature.The dopantZn and Mginfused into the V2O5 matrixand is confirmed by EDAX images. A field emission scan electron microscope was used to examine surface morphology whichreveals that grain structure has beenmodified by increasing the doping content. It is evident from theatomic force microscopy (AFM) images that the effect of Zn and Mg on V2O5 thin filmshave enhanced surface roughness.The transmittance and energy bandgap (Eg) of the film found to be decreased with an increase in doping concentration whereas absorbance varieswith doping levels.The research findings suggest that the Zn-Mg co-doped V2O5 thin films could be a potential source for energy,optical and sensor-based device applications.
Highlights
The advancement in the field of nanomaterialslike transition metal oxides V2O5 and their physiochemical properties has attracted the attention of researchers in recent years[1,2,3,4]
It is important to find new appropriate doping substances that do notchange much of the structure of the V2O5 crystals to obtain V2O5 thin film which hasa wide optical band gap with improved electrical conductivity.Thework is focused on the fabrication and study ofstructural properties ofZnand Mgco-doped for the development of devices on sensors andenergy-basedapplications
At 1% co-dopinguniform and evenly distributed V2O5 observed with very few doping of Mg and Zn.For 3% of codoping, a void was observed and the increased void content was founddifficult to handle.But with moredopantintegration, this structure transforms into a platue like structure which was visible in 5% and is increased compared to 3% co-dopant
Summary
The advancement in the field of nanomaterialslike transition metal oxides V2O5 and their physiochemical properties has attracted the attention of researchers in recent years[1,2,3,4]. Zinc and magnesium were added to enhance the optical, structural, electrical and morphological properties of V2O5thin film.Both Znand Mg ions easilyenter intothe V2O5 crystal lattice and substitute the V2+ position of the crystal because the ionic radius of these transition metals element which aresubstantially lower than that of V2+. The spray pyrolysis thin film deposition method is followed tostudy how a Zn and Mg co-doping allows easy control and replace desired elements within required amountsinthe precursor solution and affects the morphological, microstructuraland optical properties of V2O5 thin films.
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