Abstract
YPO4 nano/microcrystals with multiform crystal phases and morphologies, such as hexagonal nano/submicroprisms, spherical-like nanoparticles, and nanorods with different length/diameter ratios as well as tetragonal nanospindles, have been synthesized via a facile hydrothermal route. A series of controlled experiments indicate that the pH values in the initial solution, phosphorus sources, and the organic additive trisodium citrate (Cit3−) are responsible for crystal phase and shape determination of final products. It is found that Cit3− as a ligand and shape modifier has the dynamic effect by adjusting the growth rate of different facets under different experimental conditions, resulting in the formation of various geometries of the final products. The possible formation mechanisms for products with diverse architectures have been presented. More importantly, a systematic study on the photoluminescence of Ln3+ (Ln = Tb, Eu, Dy) and V5+ ion-doped samples annealed at 500 °C has been explored in order to obta...
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