Determination of optical and structural properties of lithium silicate ceramics with different ratios of Sm doped
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2022
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Abstract
In this study, the synthesis and luminescence characterization of Samarium (Sm3+) doped lithium metasilicate (Li2SiO3) phosphor ceramic were investigated. It was presented and discussed the results obtained on the luminescence and other optical studies such as X-ray diffraction (XRD), optical absorption and luminescence properties of Li2SiO3:Sm3+ phosphor ceramic. The Li2SiO3 compound was shown a characteristic phase in XRD. The doping in the lithium compound was not having a significant effect on the basic crystal structure of the material. The maximum photoluminescence (PL) emission for Sm3+ doped Li2SiO3 was observed at 554, 583, 641, 725 nm and bore resemblance to the visible region of the spectrum. The glow curves of all synthesized materials have a complex peak structure after being irradiated with a 90Sr–90Y beta source. In addition, the peak between 400 and 600 nm was seen in the radioluminescence (RL) spectrum because of a wide peak thought to be caused by silicate. © 2022 The Society of Powder Technology Japan
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Keywords
Crystal structure , Doping (additives) , Light absorption , Luminescence , Optical properties , Phosphors , Samarium , Samarium compounds , Silicates , Silicon , X ray diffraction , Crystals structures , Lithium silicates , Luminescence properties , Optical absorption properties , Optical study , Photoluminescence emission , Silicate ceramics , Spectra's , Visible region , X- ray diffractions , Lithium compounds