Effect of Mn doping on the structure, morphology, composition, and optical properties of ZnO nanoparticles synthesized via a simple approach
摘要
Manganese-doped zinc oxide nanoparticles were successfully synthesized by Solvothermal method from precursors such as zinc acetate dihydrate and manganese acetate (II) hydrate using microwave radiation. The prepared samples were annealed at 500 °C and exported to X-ray diffraction, to define its crystal structure, size, lattice parameters, cell volumes, stress, microstrain, the locality of the atoms and its dislocation density. Transmission electron microscopy confirms the size of the particle, which is in accordance with size of the particle obtained in XRD. The particle size of the sample was estimated to be 50–60 nm by TEM analysis. The diffraction pattern confirms the hexagonal structure of prepared particle through SAED. SEM with EDX studies were undergone to detect the morphology of the prepared samples, which was spherical in shape. The composition of elements present in the samples were analyzed by energy dispersive spectroscopy. FTIR gives the ZnO vibration characteristic intense peak at about 500 cm−1. The photoluminescence spectroscopy was adopted to figure out the emission peak at 475 nm and 543 nm. UV–Visible spectroscopy reveals that the Mn-doped ZnO nanoparticles show decreased band gap energy from 3 to 2.5 eV in comparison to pure ZnO nanoparticles.