The photoluminescence, afterglow and up conversion photostimulated luminescence of Eu3+ doped Mg2SnO4 phosphors

The Mg2SnO4:Eu3+ phosphor with reddish photoluminescence, green afterglow and photostimulated luminescence is obtained by the solid state method. The host related afterglow is greatly enhanced by doping of Eu3+ and it can last nearly 6 h when the Eu3+ concentration is 1 mol%. The photostimulated luminescence is found to be weakened by doping of Eu3+. It was revealed that all the shallow traps and a part of the deep traps are involved in afterglow. The majority of deep traps are responsible for photostimulated luminescence. The impact of doping Eu3+ on the afterglow and photostimulated luminescence is investigated and we propose a feasible interpretation.