Nafiseh Shirvani, Zohreh Chamanzadeh, Mostafa Zahedifar,
Volume 32, Issue 3 (10-2024)
Abstract
In this research, pure and doped with Dy3+ and Gd3+ ions, as impurity of La2(WO4)3 nanoparticles, were successfully synthesis using hydrothermal method and the effect of annealing temperature, type and concentration of dopant on their structural and optical properties were investigated and used as down converter material in dye sensitized solar cell. The samples were characterized by X-ray diffraction, field emission scanning electron microscopy (equipped with spectra energy dispersive analysis of X-ray), transmission electron microscopy, ultraviolet-visible spectrometer and photoluminescence spectrometer. The X-ray diffraction results showed that the nanoparticles are polycrystal with monoclinic structure. Optical studies show that these nanoparticles can absorb ultraviolet light and emit visible light in the wavelength ranging from 360 nm to 500 nm. The presence of a thin layer of La2(WO4)3:Dy nanoparticles on the dye sensitized solar cell increased the efficiency by 10.6%.
