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Comparative Analysis of Luminescence Efficiency in Rare-Earth-Doped Phosphors: Literature/Experimental Review |
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PP: 111-118 |
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doi:10.18576/jrna/110113
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Author(s) |
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Hema sahu,
Rekha Sahu,
N.Pavan Kumar,
Poonam Verma,
Poonam Verma,
Vikas Dubey,
N. Kumar Swamy,
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Abstract |
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| The sharp 4f electronic transitions, great thermal stability, and controllable multicolor emissions of rare-earth doped nano phosphors, especially borate hosts like Na₂Y₂B₂O₂ and Na₂Gd₂B₂O₂, make them intriguing materials for advanced photonic and optoelectronic applications. Efficient red, green, blue, and up conversion luminescence is made possible by a variety of dopants, including Eu³⁺, Tb³⁺, Ce³⁺, Bi³⁺, Tm³⁺, and Yb³⁺. Co-doping techniques improve energy transfer and emission intensity. Sol-gel and solid-state manufacturing techniques enable homogenous nanoparticles with regulated dopant distribution, enhancing thermal robustness and quantum efficiency. Notably, Ce³⁺→Tb³⁺→Eu³⁺ and Yb³⁺→Er³⁺ systems exhibit stepwise energy transfer, generating high-intensity emissions appropriate for display technologies, bioimaging, temperature sensors, and near-UV white LEDs. While graphene-based nanocomposites offer multifunctional improvements in structural and electrical properties, Bi³⁺-activated phosphors offer stable blue emission. When combined, these materials offer outstanding color purity, energy efficiency, and radiation endurance, making them a viable platform for next-generation optoelectronic devices. |
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