Meniak Khajuria, Sajad A. Bhat, Rohit Raina, Pankaj Biswas
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Upconversion luminescence and Judd–Ofelt analysis of Er3+ doped NaSrVO4 inorganic phosphor
The development of nano-phosphors containing upconverting luminescent materials has demonstrated their potential applications in photovoltaics. In this context, this article explores the upconversion capabilities of NaSrVO4 phosphor when activated by Er3+ ions. The NaSr(1-x)VO4:xEr3+ (0.01 ≤ x ≤ 0.04) phosphors were synthesized using a facile combustion method with urea as the fuel. Phase purity, investigated through powder X-ray diffraction, confirms the formation of a single-phase (monoclinic) material with a P21/n space group. The morphological and elemental composition of the phosphor were analyzed using transmission electron microscopy and X-ray photoelectron spectroscopy. The dopant, erbium, was found to be in the + 3 oxidation state. The direct bandgap of the synthesized phosphor is 3.69 eV for the doped sample. Upconversion photoluminescence was systematically studied, and the impact of dopant (Er3+) concentration on luminescent properties was extensively analyzed. The emission color of the synthesized phosphor falls within the green region of the spectrum and exhibits good color purity. Overall, the results suggest the potential application of the synthesized phosphor in the field of optoelectronic materials.
期刊介绍：
The Journal of Materials Science: Materials in Electronics is an established refereed companion to the Journal of Materials Science. It publishes papers on materials and their applications in modern electronics, covering the ground between fundamental science, such as semiconductor physics, and work concerned specifically with applications. It explores the growth and preparation of new materials, as well as their processing, fabrication, bonding and encapsulation, together with the reliability, failure analysis, quality assurance and characterization related to the whole range of applications in electronics. The Journal presents papers in newly developing fields such as low dimensional structures and devices, optoelectronics including III-V compounds, glasses and linear/non-linear crystal materials and lasers, high Tc superconductors, conducting polymers, thick film materials and new contact technologies, as well as the established electronics device and circuit materials.
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