Synthesis and characterization of metal doped nano zinc oxide on titanium dioxide seeded substrate

Abstract

Non-doped ZnO/TiO2 and doped ZnO/TiO2 such as Ag:ZnO/TiO2, Al:ZnO/TiO2, Cu:ZnO/TiO2 and Mg:ZnO/TiO2 nanostructures thin film have been fabricated on glass substrate by using sol-gel spin coating technique for deposition of TiO2 seed layer and solution immersion method for growth of doped ZnO nanostructures. 1 atomic percentage of each metal doped were added in 0.4 M of ZnO solution. The result shows that FESEM images of all samples reveal the morphology as nanorod and doped ZnO/TiO2 samples show a smaller diameter of nanorods sized compared with non- doped ZnO/TiO2 sample. The XRD spectra revealed polycrystalline with a structure belonging to the ZnO hexagonal wurtzite type and the intensity of the (002) peak of Cu doped ZnO/TiO2 has the highest intensity compared to non-doped and the other metal doped samples. The UV-vis absorbance display Ag:ZnO/TiO2 has the highest absorbance and Mg:ZnO/TiO2 indicates the lowest absorbance compared to other sample. Additionally, the UV-vis transmittance spectra show that Ag:ZnO/TiO2 sample are the lowest transparency. Thus, Ag doped ZnO/TiO2 is the best candidates for optical application due to the higher absorbance and the incorporation of Ag into ZnO/TiO2 produce a smaller diameter compared to other samples.Non-doped ZnO/TiO2 and doped ZnO/TiO2 such as Ag:ZnO/TiO2, Al:ZnO/TiO2, Cu:ZnO/TiO2 and Mg:ZnO/TiO2 nanostructures thin film have been fabricated on glass substrate by using sol-gel spin coating technique for deposition of TiO2 seed layer and solution immersion method for growth of doped ZnO nanostructures. 1 atomic percentage of each metal doped were added in 0.4 M of ZnO solution. The result shows that FESEM images of all samples reveal the morphology as nanorod and doped ZnO/TiO2 samples show a smaller diameter of nanorods sized compared with non- doped ZnO/TiO2 sample. The XRD spectra revealed polycrystalline with a structure belonging to the ZnO hexagonal wurtzite type and the intensity of the (002) peak of Cu doped ZnO/TiO2 has the highest intensity compared to non-doped and the other metal doped samples. The UV-vis absorbance display Ag:ZnO/TiO2 has the highest absorbance and Mg:ZnO/TiO2 indicates the lowest absorbance compared to other sample. Additionally, the UV-vis transmittance spectra show th...