Abstract
Nanocrystals of BiPO4 and BiPO4: Tb were prepared by a room-temperature co-precipitation method, and then followed by post hydrothermaland high temperature-treatment. X-ray diffraction (XRD) analyses indicated that all the prepared samples are crystalline as a pure low-temperature monoclinic phase of BiPO4. The spectra of BiPO4: Tb powders showed the characteristics of Tb emission at 544 nm corresponding to the transition of 5D4→7F5 under irradiation of 370 nm light. Finally, the processing parameters were further optimized to acquire the BiPO4: Tb + to possess proper crystallinity, surface hydration layers and ethanol species, and thereby to get optimal luminescence performance for the BiPO4: Tb powders.
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