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<p>Dy<sup>3+</sup> doped lithium cadmium orthophosphate (LCP=Li<sub>2</sub>Cd<sub>2</sub>(PO<sub>4</sub>)<sub>2</sub>) nanopowders (NPs) were synthesized using the Solid-State Reaction (SSR) method. The XRD analysis revealed the orthorhombic crystal structure with Pnma space group. The W-H plot and Scherrer’s methods were used to calculate the average crystallite size for both pure and Dy<sup>3+</sup> doped LCP NPs. The elemental composition was verified by EDS analysis and the clustered irregular stone-like structure was identified using FE-SEM analysis. Raman and FT-IR analyses were used to identify the (PO<sub>4</sub>)<sup>3−</sup>vibrational modes. The optical bandgap values of the pure and Dy<sup>3+</sup> doped LCP samples were found to be between 5.19 and 5 0.52&#xa0;eV using the DRS analysis. Using the PL spectra, samples show yellow emission at 573&#xa0;nm (<sup>4</sup>F<sub>9/2</sub>→ <sup>6</sup>H<sub>13/2</sub>) when excited at 347&#xa0;nm (<sup>6</sup>H<sub>15/2</sub>→ <sup>6</sup>P<sub>7/2</sub>) and concentration quenching, lifetime analysis, CCT, CP and photoluminescence quantum yield ≈ 02%. PL studies and photometric analysis are used to determine the yellowish emission of prepared samples. As by concluding results, the samples can be suitable for yellowish light emitting solid state lighting devices.</p>

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Orthorhombic crystal structured Dy3+ doped Li2Cd2(PO4)2 nanopowders for yellowish light emitting solid state lighting applications

  • 期刊论文

  • 发表日期：

    2026年6月20日

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  • Shaik Azad Basha,
  • K. Srinivasarao,
  • K. Daniel,
  • B. V. Naveen Kumar,
  • Y. Nirmal Rajeev,
  • Sandhya Cole

摘要

Dy3+ doped lithium cadmium orthophosphate (LCP=Li2Cd2(PO4)2) nanopowders (NPs) were synthesized using the Solid-State Reaction (SSR) method. The XRD analysis revealed the orthorhombic crystal structure with Pnma space group. The W-H plot and Scherrer’s methods were used to calculate the average crystallite size for both pure and Dy3+ doped LCP NPs. The elemental composition was verified by EDS analysis and the clustered irregular stone-like structure was identified using FE-SEM analysis. Raman and FT-IR analyses were used to identify the (PO4)3−vibrational modes. The optical bandgap values of the pure and Dy3+ doped LCP samples were found to be between 5.19 and 5 0.52 eV using the DRS analysis. Using the PL spectra, samples show yellow emission at 573 nm (4F9/2→ 6H13/2) when excited at 347 nm (6H15/2→ 6P7/2) and concentration quenching, lifetime analysis, CCT, CP and photoluminescence quantum yield ≈ 02%. PL studies and photometric analysis are used to determine the yellowish emission of prepared samples. As by concluding results, the samples can be suitable for yellowish light emitting solid state lighting devices.