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<p>In this present work single-phase blue white emitting CdWO<sub>4</sub>:Dy<sup>3+</sup> phosphors have been synthesized in different solvents using hydrothermal/solvothermal method at a temperature as low as 150 ˚C for 5&#xa0;h. The use of different synthetic solvent has drastic effect on crystallinity, particle size, morphology, band gap, and photoluminescence properties. Under 285&#xa0;nm UV light irradiation, the synthesized phosphors produced blue-white light emission due to the partial energy transfer from the host CdWO<sub>4</sub> to the dopant Dy<sup>3+</sup>. The excitation and emission intensities decrease with the reduction of crystallinity, likely due to increased in the concentration of defects that act as recombination centre for photo-excited electron and hole. The study of CIE and CCT revealed cool-white light emission with CCT exceeding 10,000&#xa0;K. It is believed that the synthesized phosphors can have potential application for indoor lighting.</p>

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Blue-white light emitting CdWO4:Dy3+ phosphor: Effect of synthetic solvents on crystal structure, morphology and photoluminescence characteristics

  • 期刊论文

  • 发表日期：

    2026年5月29日

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  • Naorem Premjit Singh,
  • Naorem Ramananda Singh

摘要

In this present work single-phase blue white emitting CdWO4:Dy3+ phosphors have been synthesized in different solvents using hydrothermal/solvothermal method at a temperature as low as 150 ˚C for 5 h. The use of different synthetic solvent has drastic effect on crystallinity, particle size, morphology, band gap, and photoluminescence properties. Under 285 nm UV light irradiation, the synthesized phosphors produced blue-white light emission due to the partial energy transfer from the host CdWO4 to the dopant Dy3+. The excitation and emission intensities decrease with the reduction of crystallinity, likely due to increased in the concentration of defects that act as recombination centre for photo-excited electron and hole. The study of CIE and CCT revealed cool-white light emission with CCT exceeding 10,000 K. It is believed that the synthesized phosphors can have potential application for indoor lighting.