Photoluminescence of Mn2+‐Activated ZnGa2 O 4

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Abstract
The synthesis and photoluminescence mechanism of are presented. Monitored at 450 nm, exhibits an absorption band at 245 nm; monitored at 506 nm exhibits absorption bands at 245 and 283 nm. Under 254 nm excitation exhibits a broad‐band emission extending from 360 to 610 nm, peaking at 450 nm. This emission is gradually quenched, as a new band emerges, peaking at 506 nm, as Mn2+ is incorporated into the lattice , where at maximum intensity. Activator sensitization and host‐to‐activator energy transfer are suggested.

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