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Synthesis and Luminescence Properties of Pr³⁺-Doped BiPO₄ Polycrystals

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Chornii V., Nedilko S., Bychkov K., Terebilenko K., Slobodyanik M., Boyko V.
Acta Physica Polonica A
|
2018
|
vol. 133
|
issue 4
843-846
EN
The results of synthesis, crystal structure characterization and luminescence properties study of the Pr³⁺-doped bismuth orthophosphate, BiPO₄, polycrystals are reported. It was found that doping of bismuth orthophosphate with praseodymium of concentration more than 1% leads to phase transition of BiPO₄ from so-called "high-temperature monoclinic" to "low-temperature monoclinic" structure. At room temperature studied samples revealed intensive red luminescence caused by radiation electronic transitions in the Pr³⁺ ions under their intrinsic f → f excitation at ³H₄→ ³P₁+¹I₆ absorption transition. Influence of phase transformation as well as multi-phonon and cross-relaxation processes on the luminescence of the Pr³⁺-doped BiPO₄ compounds were discussed.
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