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Item type:Publication, THE DEVELOPMENT OF SM3+ DOPED BARIUM TITANIUM BISMUTH BORATE GLASS FOR ORANGE EMISSION MATERIAL APPLICATION(2025-01-01); Kim, Hong JooSM<sup>3+</sup>–doped borate glasses were synthesized using the melt–quenching method, and luminescence characteristics were systematically investigated. Initially, the glass composition was modified by varying the Bi<inf>2</inf>O<inf>3</inf> content while maintaining the SM<sup>3+</sup> concentration at 1.00 mol%. Optical absorption measurements revealed that BiBaTB1Sm glasses exhibited a prominent peak at 401 nm in the visible region, which was selected as the excitation wavelength for photoluminescence analysis. The emission spectra demonstrated a maximum intensity at 598 nm under 401 nm excitation. Notably, the glass sample without Bi<inf>2</inf>O<inf>3</inf> showed stronger emission compared to the Bi<inf>2</inf>O<inf>3</inf>-doped counterparts. In a separate study, the SM<sup>3+</sup> concentration was varied (0.0, 0.1, 0.5, 1.0, and 2.0 mol%) to examine its effect on luminescence properties. luminescence intensity enhanced as the Sm content increased to 0.5 mol% before decreasing at higher concentrations due to the concentration quenching effect. Additionally, fluorescence decay time measurements indicated a reduction in lifetime with increasing SM<sup>3+</sup> content, attributed to energy transfer via cross-relaxation mechanisms. The CIE diagram confirmed that Sm<inf>2</inf>O<inf>3</inf>-doped glass emitted orange light. These findings suggest that SM<sup>3+</sup>-doped borate glasses hold promise for applications in orange-emitting photonic devices.