Haneef Shah; Shahbaz Afzal; Mohammad Usman; Kamran Shahzad; Imosobomeh Lucky Ikhioya
Abstract
In this study, we synthesized La0.1Er0.2Te0.2 nanoparticle using 0.2 mol of Er(NO3)3·5H2O, 0.1 mol of La(NO3)3·6H2O, and 0.2 mol of Te(NO3)4 through hydrothermal and doctor ...
Read More
In this study, we synthesized La0.1Er0.2Te0.2 nanoparticle using 0.2 mol of Er(NO3)3·5H2O, 0.1 mol of La(NO3)3·6H2O, and 0.2 mol of Te(NO3)4 through hydrothermal and doctor blade methods. The La0.1Er0.2Te0.2 material reveals a hexagonal structure corresponding to a 2theta angle of 13.263o. 15.375o. 16.943o. 18.924o. 25.788o. and 27.356o for La0.1Er0.2Te0.2 unannealed and 13.302o, 15.489o, 16.960o, 19.055o, 25.862o, and 27.373o for annealed samples. The XRD pattern showed that the crystallinity increased with higher annealing temperature. Unannealed La0.1Er0.2Te0.2 had glow-like nanoparticles. The La0.1Er0.2Te0.2 nanoparticles showed high absorbance in the visible area of the spectra with 0.648 a.u. The absorbance of the material decreased as the annealing temperature increased. The higher the annealing temperature, the lower the absorbance of the material. The unannealed nanoparticle has a bandgap energy of 3.50 eV. The annealing nanoparticles have a bandgap of 3.27 to 2.26 eV. The higher the annealing temperature, the lower the bandgap of the material
