LAUSR

Mesoporous P2O5 doped magnesium silicate (MS-P) thin films were prepared using the activated sol–gel method and calcinated at different temperatures (200, 300, and 400 °C). The effect of both P2O5 content, and the calcinating temperature on the thin films structure, morphology, FTIR, and UV–Vis optical properties, was examined. The structural results demonstrate that the changing of the P2O5 content ratio and the temperature of preparation have significant effects on crystallization and the internal structure. All films were found to have a relative value of transmittance that reaches or exceeds about 90% in the visible range. The optical band gap shows a blue shift with increasing of the P2O5 content as well as with calcinating temperature increase. The refractive index is nearly constant and uniform in the overall visible zone for all samples. The optical conductivity shows nearly relative values and similar behaviors in all P2O5 contents at all calcinating temperatures, where it is constant at low energies and increases at higher incident photon energies.