Kiran R, Kamath Nagaraj, Sayyed M I, Almuqrin Aljawhara H, Kamath Sudha D
Department of Physics, Manipal Institute of Technology, Manipal Academy of Higher Education Manipal Karnataka India
Department of Humanities and Management, Manipal Institute of Technology, Manipal Academy of Higher Education Manipal Karnataka India.
RSC Adv. 2025 Jun 12;15(25):20040-20060. doi: 10.1039/d5ra03126e. eCollection 2025 Jun 10.
This article explores the synthesis of rare-earth-doped nanophosphors (RENPs), focusing on selecting optimal host materials like tungstates, vanadates, and aluminates to enhance luminescent properties. The incorporation of rare-earth elements, such as Eu, Tb, Dy, Sm, , significantly improves emission spectra and efficiency by utilizing their unique electronic configurations and interactions with the host lattice. Nanophosphors were synthesized through sol-gel, combustion, and microwave-assisted methods, resulting in materials with tunable photoluminescence, high luminous efficiency, and appropriate chromaticity for wide-bandgap lighting applications. The study further investigates upconversion nanophosphors (UCNPs), demonstrating exceptional attributes like long luminescence lifetimes, high sensitivity, low energy loss, and tunable emission spectra. These characteristics make UCNPs ideal for advanced sensing applications. Additionally, RENPs exhibit great potential in thermoluminescence dosimetry, providing accurate radiation dose measurements with minimal fading and energy-dependent responses, thus advancing both medical and environmental dosimetry.
本文探讨了稀土掺杂纳米磷光体（RENPs）的合成，重点是选择钨酸盐、钒酸盐和铝酸盐等最佳基质材料以增强发光性能。掺入铕、铽、镝、钐等稀土元素，通过利用它们独特的电子构型以及与基质晶格的相互作用，显著改善了发射光谱和效率。通过溶胶 - 凝胶法、燃烧法和微波辅助法合成了纳米磷光体，得到了具有可调谐光致发光、高发光效率和适用于宽带隙照明应用的合适色度的材料。该研究进一步研究了上转换纳米磷光体（UCNPs），展示了诸如长发光寿命、高灵敏度、低能量损失和可调谐发射光谱等优异特性。这些特性使UCNPs成为先进传感应用的理想选择。此外，RENPs在热释光剂量测定方面具有巨大潜力，能够以最小的褪色和能量依赖响应提供准确的辐射剂量测量，从而推动医学和环境剂量测定的发展。
