In-situ sol–gel synthesis of luminescent Gd2SiO5:Tb3+ nanophosphors derived from assembling hybrid precursors

Using rare earth coordination polymers with salicylic acid as precursors for the luminescent species Gd2SiO5:Tb3+, composing with the polyacrylamide as dispersing media, nanophosphor of Gd2SiO5 doped with Tb3+ was synthesized by the sol–gel technique. X-ray diffraction and scanning electronic microscope show that these materials have the nanometer size of 40–100 nm. These nanometer materials exhibit strong green emission at 542 nm.