The synthesis and photoluminescence mechanism of ZnGa2O4:Mn2+ are pres
ented. Monitored at 450 nm, ZnGa2O4 exhibits an absorption band at 245
nm; monitored at 506 nm ZnGa2O4:Mn2+ exhibits absorption bands at 245
and 283 run. Under 254 nm excitation ZnGa2O4 exhibits a broad-band em
ission extending from 360 to 610 nn, peaking at 450 nm. This emission
is gradually quenched, as a new band emerges, peaking at 506 nm, as Mn
2+ is incorporated into the lattice (Zn1-xMnxGa2O4), where x = 0.006 a
t maximum intensity. Activator sensitization and host-to-activator ene
rgy transfer are suggested.