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<p>NaLi<sub>2</sub>PO<sub>4</sub> materials codoped with varied impurity(ies) concentration(s) of Tb<sup>3+</sup> and Sm<sup>3+</sup> were prepared via solid state diffusion method and their luminescence properties were investigated. PXRD studies confirmed formation of the NaLi<sub>2</sub>PO<sub>4</sub>:Sm<sup>3+</sup> 1.0&#xa0;mol%, Tb<sup>3+</sup> 0.1&#xa0;mol% material in orthorhombic phase. Morphological and luminescence studies were carried out using FESEM, PL and TL techniques. TL studies showed that the phosphor material annealed at 600&#xa0;°C exhibits maximum sensitivity. Dosimetry properties, such as, 1.28 times more sensitivity than commercial TLD-900 phosphor, wide dose range (100.0&#xa0;mGy–10.0&#xa0;kGy), moderate fading and excellent reusability, etc. show that NaLi<sub>2</sub>PO<sub>4</sub>:Sm<sup>3+</sup> 1.0&#xa0;mol%, Tb<sup>3+</sup> 0.1&#xa0;mol% is promising candidate for dosimetry of high-energy radiations.</p>

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Thermoluminescence (TL) and photoluminescence (PL) of Tb3+ and Sm3+ co-doped NaLi2PO4 phosphors prepared by solid state diffusion method

  • 期刊论文

  • 发表日期：

    2025年9月13日

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  • Bhuli Bai,
  • P. D. Sahare,
  • Lucky Sharma,
  • Aditya Sahare

摘要

NaLi2PO4 materials codoped with varied impurity(ies) concentration(s) of Tb3+ and Sm3+ were prepared via solid state diffusion method and their luminescence properties were investigated. PXRD studies confirmed formation of the NaLi2PO4:Sm3+ 1.0 mol%, Tb3+ 0.1 mol% material in orthorhombic phase. Morphological and luminescence studies were carried out using FESEM, PL and TL techniques. TL studies showed that the phosphor material annealed at 600 °C exhibits maximum sensitivity. Dosimetry properties, such as, 1.28 times more sensitivity than commercial TLD-900 phosphor, wide dose range (100.0 mGy–10.0 kGy), moderate fading and excellent reusability, etc. show that NaLi2PO4:Sm3+ 1.0 mol%, Tb3+ 0.1 mol% is promising candidate for dosimetry of high-energy radiations.