Abstract
Up-converted blue/red dual color emitting Tm3+, Yb3+ co-activated crystalline phosphor derived from LTA zeolites have been fabricated via a facile, highly controllable, and cost-effective method, that is, the combination of ion exchange and thermal treatment in air. Under the 980 nm laser excitation, the Tm3+,Yb3+ co-activated nepheline phosphor powders showed bright blue (480 am) and red(650 nm) emission, which were attributed to the 1G4 → 3H6 and 1G4 → 3F4 transitions of Tm3+ ion, respectively. The blue/red dual color up-conversion emission from this kind of phosphor may have applications in bio-imaging and optogenetics.
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