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<p>Undoped and a series of Pb<sup>2+</sup> ion-doped UV-emitting Ca<sub>2-<i>x</i></sub>Pb<sub><i>x</i></sub>B<sub>2</sub>O<sub>5</sub> (0.0025 ≤ <i>x</i> ≤ 0.03) phosphors were prepared via the solution combustion method, and their prospective luminescence properties were investigated. The formation of the monoclinic phase of Ca<sub>2</sub>B<sub>2</sub>O<sub>5</sub> was confirmed by the powder X-ray diffraction result. The Ca<sub>2-<i>x</i></sub>Pb<sub><i>x</i></sub>B<sub>2</sub>O<sub>5</sub> (0.0025 ≤ <i>x</i> ≤ 0.03) phosphors’ photoluminescence properties were examined using a spectrofluorometer at room temperature. The broadband peaking at 331 nm is the emission peak of Ca<sub>2</sub>B<sub>2</sub>O<sub>5</sub>:Pb<sup>2+</sup> (0.01 mol), which is ascribed to the <sup>3</sup><i>P</i><sub>1</sub>→<sup>1</sup><i>S</i><sub>0</sub> transition. For Ca<sub>2</sub>B<sub>2</sub>O<sub>5</sub>, the relationship between the emission intensity and the Pb<sup>2+</sup> content was thoroughly examined. Finally, utilizing the excitation band at 273 nm and the emission band at 331 nm, the Stokes shift of the prepared material, Ca<sub>2</sub>B<sub>2</sub>O<sub>5</sub>:Pb<sup>2+</sup>, was determined to be 6418 cm<sup>-1</sup>.</p>

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Synthesis and Photoluminescence Properties of Pb2+-Doped Ca2B2O5

  • 期刊论文

  • 发表日期：

    2025年9月12日

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  • İlhan Pekgözlü

摘要

Undoped and a series of Pb2+ ion-doped UV-emitting Ca2-xPbxB2O5 (0.0025 ≤ x ≤ 0.03) phosphors were prepared via the solution combustion method, and their prospective luminescence properties were investigated. The formation of the monoclinic phase of Ca2B2O5 was confirmed by the powder X-ray diffraction result. The Ca2-xPbxB2O5 (0.0025 ≤ x ≤ 0.03) phosphors’ photoluminescence properties were examined using a spectrofluorometer at room temperature. The broadband peaking at 331 nm is the emission peak of Ca2B2O5:Pb2+ (0.01 mol), which is ascribed to the 3P1→1S0 transition. For Ca2B2O5, the relationship between the emission intensity and the Pb2+ content was thoroughly examined. Finally, utilizing the excitation band at 273 nm and the emission band at 331 nm, the Stokes shift of the prepared material, Ca2B2O5:Pb2+, was determined to be 6418 cm-1.