Institute of Physics, University of Tartu, 142 Riia street, 51014 Tartu, Estonia.
J Phys Condens Matter. 2013 Mar 13;25(10):105403. doi: 10.1088/0953-8984/25/10/105403. Epub 2013 Feb 6.
Studies on the crystal structure and luminescence properties have been performed for the NaPr(1-x)Ce(x)P(4)O(12) polyphosphate series. Excitation and emission spectra of Pr(3+) and Ce(3+) luminescence from NaPrP(4)O(12):Ce(3+) clearly reveal an efficient Pr(3+ ) → Ce(3+) energy transfer via migration over the Pr(3+)-sub-lattice and a nonradiative resonant transfer to the Ce(3+) ions. Analysis on scintillation characteristics of the NaPr(1-x)Ce(x)P(4)O(12) series shows a maximum light yield of 11,000 ± 1000 ph MeV(-1) for NaPr(0.99)Ce(0.01)P(4)O(12), proving the studied polyphosphates to be promising for application in the detection of x-ray and gamma quanta.
研究了 NaPr(1-x)Ce(x)P(4)O(12) 多磷酸盐系列的晶体结构和发光性能。Pr(3+)和 Ce(3+)的激发和发射光谱清楚地表明，通过在 Pr(3+)亚晶格上的迁移，Pr(3+)→Ce(3+)能量转移是有效的，并且通过非辐射共振转移到 Ce(3+)离子。对 NaPr(1-x)Ce(x)P(4)O(12)系列闪烁特性的分析表明，NaPr(0.99)Ce(0.01)P(4)O(12)的最大光产率为 11000±1000ph MeV(-1)，证明所研究的多磷酸盐在 x 射线和伽马量子的检测中有应用潜力。
