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<p>A sustainable, cost-effective, and waste-free synthesis approach was developed for narrow-band blue-emitting Ba<sub>0.95</sub>MgAl<sub>10</sub>O<sub>17</sub>:0.05Eu<sup>2+</sup> (BAM:Eu<sup>2+</sup>) nanophosphors using a green solution-combustion method at 600°C. An innovative complex formation route eliminated hazardous NO<sub>x</sub> emissions, ensuring an eco-friendly process. Optimized conditions led to a single-phase BAM structure (P63/mmc β-Alumina), suppressing secondary phases. XRD analysis confirmed high crystallinity with an average crystallite size of ~ 90&#xa0;nm, while SEM imaging revealed a flake-shaped morphology. Photoluminescence studies under 300&#xa0;nm excitation exhibited a dominant 450&#xa0;nm emission due to the 4f<sup>6</sup>5d<sup>1</sup> → 4f<sup>7</sup>(<sup>8</sup>S<sub>7/2</sub>) transition of Eu<sup>2+</sup> ions, with CIE coordinates (0.149, 0.081) in the blue region. The superior optical performance and eco-friendly synthesis make these nanophosphors ideal for LCDs, FEDs, PDPs, electroluminescent lamps, and nanodevices, offering a scalable solution for next-generation display technologies.</p>

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Eco-friendly and cost-effective synthesis approach with no waste generation in developing narrow-band and efficient blue-emitting Eu2+doped BaMgAl10O17 nanophosphor

  • 期刊论文

  • 发表日期：

    2025年6月30日

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  • P. Chandar Rao,
  • K. A. K. Durga Prasad,
  • A. S. Sai Prasad,
  • N. Maramu,
  • C. J. Sreelatha,
  • D. Haranath

摘要

A sustainable, cost-effective, and waste-free synthesis approach was developed for narrow-band blue-emitting Ba0.95MgAl10O17:0.05Eu2+ (BAM:Eu2+) nanophosphors using a green solution-combustion method at 600°C. An innovative complex formation route eliminated hazardous NOx emissions, ensuring an eco-friendly process. Optimized conditions led to a single-phase BAM structure (P63/mmc β-Alumina), suppressing secondary phases. XRD analysis confirmed high crystallinity with an average crystallite size of ~ 90 nm, while SEM imaging revealed a flake-shaped morphology. Photoluminescence studies under 300 nm excitation exhibited a dominant 450 nm emission due to the 4f65d1 → 4f7(8S7/2) transition of Eu2+ ions, with CIE coordinates (0.149, 0.081) in the blue region. The superior optical performance and eco-friendly synthesis make these nanophosphors ideal for LCDs, FEDs, PDPs, electroluminescent lamps, and nanodevices, offering a scalable solution for next-generation display technologies.