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DC Field | Value | Language |
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dc.contributor.author | Muresan, Laura E. | - |
dc.contributor.author | Cadis, Adrian-Ionut | - |
dc.contributor.author | Perhaita, Ioana | - |
dc.contributor.author | Indrea, Emil | - |
dc.date.accessioned | 2023-09-29T09:23:25Z | - |
dc.date.available | 2023-09-29T09:23:25Z | - |
dc.date.issued | 2014 | - |
dc.identifier.citation | Muresan, L., Cadis, A., Perhaita, I., & Indrea, E. (2014). Morpho-structural and luminescence investigations on yttrium silicate based phosphors prepared with different precipitating agents. Open Chemistry, 12(10), 1023-1031. | en_GB |
dc.identifier.uri | https://www.um.edu.mt/library/oar/handle/123456789/113354 | - |
dc.description.abstract | Yttrium silicate doped with cerium (Y2 SiO5 :Ce) was obtained from Y-Ce-Si based precursors prepared by the simultaneous addition of reagents (SimAdd) technique. The synthesis of the precursors was done in well controlled conditions using ammonium oxalate, ammonium carbonate or urea as precipitating agents. Results regarding the influence of precipitating agents on the morpho structural and photoluminescent characteristics of Y2 SiO5 :Ce are reported. The TG analysis in correlation with EGA, FT-IR and XRD investigations reveals the formation of oxalate, hydroxy-carbonate or hydroxy-nitrate based compounds, the same as the conversion of the precursors to well crystallized yttrium silicate. XRD patterns show that the precursors are amorphous except for the sample prepared with ammonium oxalate. Depending on the precipitation conditions, the phosphors phase composition varies from single phase (X2-Y2 SiO5 ) to a mixture of phases (X2-Y2 SiO5 , X1-Y2 SiO5 ,Y2 O3 ). Under UV excitation, phosphors exhibit the specific blue emission of cerium with an intensity that varies from 175.8% (urea) to 96.0% (ammonium carbonate) and to 78.5% (ammonium oxalate). The emission intensity depends on the phase purity and order degree of the phosphors. | en_GB |
dc.language.iso | en | en_GB |
dc.publisher | Walter de Gruyter GmbH | en_GB |
dc.rights | info:eu-repo/semantics/restrictedAccess | en_GB |
dc.subject | Yttrium | en_GB |
dc.subject | Luminescence | en_GB |
dc.subject | Phosphors | en_GB |
dc.subject | Precipitation (Chemistry) | en_GB |
dc.title | Morpho-structural and luminescence investigations on yttrium silicate based phosphors prepared with different precipitating agents | en_GB |
dc.type | article | en_GB |
dc.rights.holder | The copyright of this work belongs to the author(s)/publisher. The rights of this work are as defined by the appropriate Copyright Legislation or as modified by any successive legislation. Users may access this work and can make use of the information contained in accordance with the Copyright Legislation provided that the author must be properly acknowledged. Further distribution or reproduction in any format is prohibited without the prior permission of the copyright holder. | en_GB |
dc.description.reviewed | peer-reviewed | en_GB |
dc.identifier.doi | 10.2478/s11532-014-0553-z | - |
dc.publication.title | Open Chemistry | en_GB |
Appears in Collections: | Scholarly Works - FacEngMME |
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