Up-conversion phosphors BaLa2ZnO5 co-doped with Tm3+/Yb3+ were synthesized by high temperature solid-state reaction method.
The crystal structure of BaLa2ZnO5 and the changes of cell parameters and volume of BaLa2ZnO5 after doping Tm3+ and Yb3+ have been discussed.
Up-conversion luminescence properties and energy transfer between Tm3+ and Yb3+ in BaLa2ZnO5 have been discussed in detail.