title: [Gd-doped natural thenardite: Eu photoluminescence properties of europium].
abstract: The authors prepared Na2SO4: Eu, Gd, and Na2Gd2 (SO4)4: Eu phosphors by heating, the mixed powder of GdF3, EuF3 and natural mirabilite with muffle furnace at 1 000 degrees C for 30 min and continually heating it with microwave at 750 degrees C for 10 min. With increasing the concentrations of Gd ion, the 610 nm emission intensity due to Eu3+ was strengthened. Gd3+ probably formed a bridge between substrate and the activator so that the energy is able to be transferred efficiently. The luminescence intensity, along with colorimetric purity, reaches the top with 21 mol% Gd3+ doping in the thenardite (Na2SO4: Eu) lattices, eventually coming up the quenching effects of concentration.
authors.affiliation: School of Physics and Electronic Engineering, Xinjiang Normal University, Urumqi 830054, China. guzalay.juma@gmail.com
authors.forename: Juman
authors.initials: J
authors.lastname: Guzaliayi
authors.forename: Aidilibike
authors.initials: A
authors.lastname: Tuerxun
authors.forename: Abulizi
authors.initials: A
authors.lastname: Aizitiaili
authors.forename: Sidike
authors.initials: S
authors.lastname: Aierken