Spectrocopic and Luminescence Properties of Sm3+ doped PBNaG Galsses for Orange LED Application Juniastel Rajagukguk1, Nursaidah1, Fitrilawati2, Jakrapong Kaewkhao3
1Department of Physics, Faculty of Mathematics and Natural Sciences, Universitas Negeri Medan, 20221, Indonesia 3Department of Physics, Faculty of Mathematics and Natural Science, Universitas Padjadjaran 4,5Center of Excellence in Glass Technology and Materials Science, Nakhon Pathom Rajabhat University, Nakhon Pathom, 73000, Thailand
Abstract
Glasses treated with rare earth are very interesting because of their wide application in fields such as laser and optical fibers. Various hosts such as glass, crystal and poly crystalline are treated with soil ions. In this research the medium of glass was made with composition (70-x) P2O5 - 10Bi2O3 - 10Na2O - 10Gd2O3 - xSm2O3 with x = 0; 0.05; 0,1; 0, 5; 1.0; 3.0 (mol%) doped by active ion xSm2O3 All powdered chemical compounds with a total mass of 20 grams are mixed in alumina crucible and prepared by melt-quenching method. The optimum glass sample is cut to size (w x h x d = 1,0 x 0,2 x 1,5) mm3. Physical properties such as density, molar volume, refractive index, Sm3+ ion concentration, molar reactivity and susceptibility for each doping concentration are calculated and reported. The optical properties of glass samples Sm3+ with different concentrations were determined by measuring the absorption and luminance spectrum in the visible region. UV-Vis NIR spectrophotometer analysis showed that there were nine non-homogeneous transition bands in various positions and intensity with hypersensitive transitions at 1233 nm (6H5/2-6F1/2) wavelength. Emission spectrum in glass medium Sm: Phosphate was observed using an excitation wavelength of 550 nm resulting in four emission band transitions namely 4G5/2/6H5/2 (562 nm), 4G5/2/6H7/2 (597 nm), 4G5/2/6H9/2 (644 nm) and 4G5/2/6H11/2 (703 nm), Emission intensity increases at Sm 1.0 mol%.
Keywords: Glass, phosphate, samarium, PBNaG : Sm
Topic: Optical, luminescence, Electronic Materials and applications
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