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Abstract <p>The urea-assisted solution combustion method has created Ca<sub>0.5</sub>Bi<sub>3</sub>P<sub>2</sub>O<sub>10</sub> nanophosphor activated by Er<sup>3+</sup> ions. X-ray Diffraction patterns showed a triclinic phase with the P-1 space group after the developed Er<sup>3+</sup>-doped Ca<sub>0.5</sub>Bi<sub>3</sub>P<sub>2</sub>O<sub>10</sub> phosphor was refined using the Rietveld method. The size is characterized using electron microscopy methods, specifically transmission electron microscopy and scanning electron microscopy, and surface-related characteristics of the produced nanopowder. An energy-dispersive spectroscopy device verifies the homogeneous distribution of different components in the nanocrystalline sample. The estimated value of the band gap (E<sub>g</sub>) for Ca<sub>0.5</sub>Bi<sub>2.85</sub>Er<sub>0.15</sub>P<sub>2</sub>O<sub>10</sub> and Ca<sub>0.5</sub>Bi<sub>3</sub>P<sub>2</sub>O<sub>10</sub> is 3.82&#xa0;eV and 3.87&#xa0;eV, respectively. After excitation at 377&#xa0;nm, the Er<sup>3+</sup>: Ca<sub>0.5</sub>Bi<sub>3</sub>P<sub>2</sub>O<sub>10</sub>, <sup>4</sup>H<sub>11/2</sub> → <sup>4</sup>I<sub>15/2</sub> transition in the nanophosphor produces bright green emission. Dipole-dipole interlinkages with Dexter’s idea are responsible for the concentration quenching that occurs after 5&#xa0;mol % composition of trivalent Erbium ions. The non-radiative rates (92.54&#xa0;s<sup>− 1</sup>), quantum efficiency (55.28%), radiative lifetime (0.4831 ms), and colorimetric factors, such as Commission Internationale de I’Eclairage (CIE) x (= 0.2334), y (= 0.6062), and correlated color temperature values, provide Ca<sub>0.5</sub>Bi<sub>2.85</sub>Er<sub>0.15</sub>P<sub>2</sub>O<sub>10</sub> as an effective green radiating nanomaterial for Red-Green-Blue nanophosphors used in solid-state and latent fingerprinting applications (LFP).</p> Graphical abstract <p></p>

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Er3+ Nanophosphors for advanced illuminating and latent fingerprinting applications: a crystal structure and photoluminescent analysis of green light emitting Ca0.5Bi3P2O10

  • 期刊论文

  • 发表日期：

    2026年4月28日

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  • Diksha Solanki,
  • Poonam Devi,
  • Neeraj Sehrawat,
  • Neelam Kumari,
  • Rajesh Kumar Malik

摘要

Abstract

The urea-assisted solution combustion method has created Ca0.5Bi3P2O10 nanophosphor activated by Er3+ ions. X-ray Diffraction patterns showed a triclinic phase with the P-1 space group after the developed Er3+-doped Ca0.5Bi3P2O10 phosphor was refined using the Rietveld method. The size is characterized using electron microscopy methods, specifically transmission electron microscopy and scanning electron microscopy, and surface-related characteristics of the produced nanopowder. An energy-dispersive spectroscopy device verifies the homogeneous distribution of different components in the nanocrystalline sample. The estimated value of the band gap (Eg) for Ca0.5Bi2.85Er0.15P2O10 and Ca0.5Bi3P2O10 is 3.82 eV and 3.87 eV, respectively. After excitation at 377 nm, the Er3+: Ca0.5Bi3P2O10, 4H11/2 → 4I15/2 transition in the nanophosphor produces bright green emission. Dipole-dipole interlinkages with Dexter’s idea are responsible for the concentration quenching that occurs after 5 mol % composition of trivalent Erbium ions. The non-radiative rates (92.54 s− 1), quantum efficiency (55.28%), radiative lifetime (0.4831 ms), and colorimetric factors, such as Commission Internationale de I’Eclairage (CIE) x (= 0.2334), y (= 0.6062), and correlated color temperature values, provide Ca0.5Bi2.85Er0.15P2O10 as an effective green radiating nanomaterial for Red-Green-Blue nanophosphors used in solid-state and latent fingerprinting applications (LFP).

Graphical abstract