Up-conversion Persistent Luminescence of a 980 nm Laser Activated Zn3Ga2(GexSn1−x)O8:Yb,Er,Cr Phosphors

Zn 3 Ga 2 (Ge x Sn 1−x )O 8 :Yb,Er,Cr phosphors with different doping ratio of Ge/Sn were prepared by high temperature solid-state method. After excited at 270 nm with a xenon lamp for 15 min, the persistent luminescence (PL) of Zn 3 Ga 2 (Ge x Sn 1−x )O 8 :Yb,Er,Cr phosphor can last more than 60 mi...

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