Swetha, B. N and Keshavamurthy, K and Pramod, A G and Devarajulu, G and Roopa, K P and Patwari, D Rajeshree and Kebaili, Imen and ben Ahmed, Samia and Sayyed, M. and Khan, Sultan and Ramesh, P and Sathish, K N and Fatima, Naseem and Annapurna, K and Jagannath, G (2022) Improved photoluminescence and spectroscopic features of Sm3+-doped alkali borate glasses by embedding silver nanoparticles. Journal of Non-Crystalline Solids, 579. Art No-121371. ISSN 0022-3093

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Influence of Ag nanoparticles (NPs) on the improvement in photoluminescence and spectroscopic features of Sm3+-doped alkali borate glass synthesized by the melt quenching process was systematically studied and analyzed. The increasing particle size of Ag NPs with the increase of AgCl concentration (0.1 - 0.5 mol%) causes the surface plasmon resonance peak to shift to a higher wavelength (red-shift) side. Electron microscopic investigation confirmed the presence of silver NPs in the SmLAB-1 glass sample with a median size of 4.57 nm. A significant enhancement in emission was noticed for 0.1 mol% AgCl concentration. Such improved emission was attributed to the enhanced local electric field by metallic NPs in the vicinity of Sm3+ ions and efficient energy transfer between Sm3+ ions and silver NPs. The Judd-Ofelt parameter, Omega(2) decreased as the concentration of Ag NPs increases, indicating increased symmetry and ionicity between the trivalent samarium ions and their ligands. These prepared glass compositions could have applications in solid-state devices such as LEDs and display applications.

Item Type: Article
Subjects: Glass
Divisions: Glass
Depositing User: Bidhan Chaudhuri
Date Deposited: 21 Sep 2023 09:06
Last Modified: 21 Sep 2023 09:06
URI: http://cgcri.csircentral.net/id/eprint/5535

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