Luminescence and structural properties of Gd2SiO5:Eu3+ nanophosphors synthesized from the hydrothermal obtained silica sol

In this paper is given a synthesis of Gd2SiO5 (GSO) host lattice doped with Eu3+ ions using silica sol obtained by hydrothermal method as a main precursor for its nanostructure designing. X-ray diffraction, dynamic light scattering and transmission electron microscopy show that synthesized nanopowder has particle size around 10 nm. These nanosized materials exhibit strong red emission at 614 nm. Lifetime measurements have been performed on two Eu3+ emitting levels, 5D1 and 5D0. 1.37 ms is obtained for the 5D0 emitting level while the 5D1 emission is fast about 10 μs.