Abstract
Uniform and well-dispersed ellipsoidal BaWO4:Dy3+ particles have been prepared via a simple hydrothermal method. The as-obtained particles are non-aggregated with narrow size distribution and are composed of closely packed nanoparticles. During the hydrothermal process, the chelating agent trisodium citrate plays an important role for the formation of BaWO4:Dy3+ hierarchical ellipsoidal particles. The BaWO4:Dy3+ phosphor shows intense yellow emission corresponding to 4F9/2-6H13/2 transition of the Dy3+ ions under ultraviolet light excitation, which may find potential applications in fields of fluorescent lamps, display systems, and optoelectronic devices.
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