Site occupancy and luminescence properties of Eu3+ in double salt silicate Na3LuSi3O9

Eu3+ luminescence is helpful to probe the local structure of luminescent centers in a host lattice. In order to analyze the site occupancy and luminescence properties of Eu3+ in double salt silicate Na3LuSi3O9, Na3LuSi3O9:Eu3+ phosphors were prepared using a high temperature solid-state reaction method, and their luminescence spectra and decay curves under UV excitation were determined. According to the characteristic emission of O2- - Eu3+ charge transfer bands, 5D0-7F0, 5D0-7F1 and 5D0-7F2 transitions of Eu3+ in Na3LuSi3O9, the site occupancy of Eu3+ in the host Na3LuSi3O9 was clarified, which will be of benefit to the development of new luminescence materials based on the double salts silicates host Na3LuSi3O9.