Effect of Yb<sup>3+</sup> on the Structural and Visible to Near-Infrared Wavelength Photoluminescence Properties in Sm<sup>3+</sup>-Yb<sup>3+</sup>-Codoped Barium Fluorotellurite Glasses
We report on the Sm<sup>3+</sup> and Sm<sup>3+</sup>:Yb<sup>3+</sup>-doped barium fluorotellurite glasses prepared using the conventional melting and quenching method. The spectroscopic characterisations were investigated with Raman and FTIR to evaluate the glasse...
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2022-05-01
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| Online Access: | https://www.mdpi.com/1996-1944/15/9/3314 |
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| author | Eric Kumi-Barimah Yan Chen Rebekah Tenwick Mohanad Al-Murish Geeta Sherma Animesh Jha |
| author_facet | Eric Kumi-Barimah Yan Chen Rebekah Tenwick Mohanad Al-Murish Geeta Sherma Animesh Jha |
| author_sort | Eric Kumi-Barimah |
| collection | DOAJ |
| description | We report on the Sm<sup>3+</sup> and Sm<sup>3+</sup>:Yb<sup>3+</sup>-doped barium fluorotellurite glasses prepared using the conventional melting and quenching method. The spectroscopic characterisations were investigated with Raman and FTIR to evaluate the glasses’ structural and hydroxyl (-OH) content. The Raman analysis revealed a structural modification in the glass network upon adding and increasing the Yb<sup>3+</sup> concentration from a TeO<sub>3</sub> trigonal pyramid to a TeO<sub>4</sub> trigonal bi-pyramid polyhedral. At the same time, the FTIR measurements showed the existence of -OH groups in the glass. Thus, under the current experimental conditions and nominal composition, the -OH group contents are too large to enable an effective removal. The near-infrared region of the absorption spectra is employed to determine the nephelauxetic ratio and bonding parameters. The average nephelauxetic ratio decreases, and the bonding parameter increases with the increasing Yb<sup>3+</sup> content in the glasses. A room temperature visible and near-infrared photoluminescence ranging from 500 to 1500 nm in wavelength and decay properties were investigated for glasses doped with Sm<sup>3+</sup> and Sm<sup>3+</sup>-Yb<sup>3+</sup> by exciting them with 450 and 980 nm laser sources. Exciting the Sm<sup>3+</sup>- and Sm<sup>3+</sup>-Yb<sup>3+</sup>-doped glasses by 450 nm excitation reveals a new series of photoluminescence emissions at 1200, 1293, and 1418 nm, corresponding to the <sup>6</sup>F<sub>11/2</sub> state to the <sup>6</sup>H<i><sub>J</sub></i> (<i>J</i> = 7/2, 9/2, 11/2) transitions. Under the 976 nm laser excitation, a broad photoluminescence emission from 980 to 1200 nm was detected. A decay lifetime decreased from ~244 to ~43 μs by increasing the Yb<sup>3+</sup> content, ascribing to concentration quenching and the OH content. |
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| institution | Directory Open Access Journal |
| issn | 1996-1944 |
| language | English |
| last_indexed | 2024-03-10T03:57:50Z |
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| spelling | doaj.art-b6ed4972d1f84bb8b8219ffd666d85c42023-11-23T08:41:31ZengMDPI AGMaterials1996-19442022-05-01159331410.3390/ma15093314Effect of Yb<sup>3+</sup> on the Structural and Visible to Near-Infrared Wavelength Photoluminescence Properties in Sm<sup>3+</sup>-Yb<sup>3+</sup>-Codoped Barium Fluorotellurite GlassesEric Kumi-Barimah0Yan Chen1Rebekah Tenwick2Mohanad Al-Murish3Geeta Sherma4Animesh Jha5School of Chemical and Process Engineering, University of Leeds, Clarendon Road, Leeds LS2 9JT, UKSchool of Chemical and Process Engineering, University of Leeds, Clarendon Road, Leeds LS2 9JT, UKSchool of Chemical and Process Engineering, University of Leeds, Clarendon Road, Leeds LS2 9JT, UKSchool of Chemical and Process Engineering, University of Leeds, Clarendon Road, Leeds LS2 9JT, UKSchool of Chemical and Process Engineering, University of Leeds, Clarendon Road, Leeds LS2 9JT, UKSchool of Chemical and Process Engineering, University of Leeds, Clarendon Road, Leeds LS2 9JT, UKWe report on the Sm<sup>3+</sup> and Sm<sup>3+</sup>:Yb<sup>3+</sup>-doped barium fluorotellurite glasses prepared using the conventional melting and quenching method. The spectroscopic characterisations were investigated with Raman and FTIR to evaluate the glasses’ structural and hydroxyl (-OH) content. The Raman analysis revealed a structural modification in the glass network upon adding and increasing the Yb<sup>3+</sup> concentration from a TeO<sub>3</sub> trigonal pyramid to a TeO<sub>4</sub> trigonal bi-pyramid polyhedral. At the same time, the FTIR measurements showed the existence of -OH groups in the glass. Thus, under the current experimental conditions and nominal composition, the -OH group contents are too large to enable an effective removal. The near-infrared region of the absorption spectra is employed to determine the nephelauxetic ratio and bonding parameters. The average nephelauxetic ratio decreases, and the bonding parameter increases with the increasing Yb<sup>3+</sup> content in the glasses. A room temperature visible and near-infrared photoluminescence ranging from 500 to 1500 nm in wavelength and decay properties were investigated for glasses doped with Sm<sup>3+</sup> and Sm<sup>3+</sup>-Yb<sup>3+</sup> by exciting them with 450 and 980 nm laser sources. Exciting the Sm<sup>3+</sup>- and Sm<sup>3+</sup>-Yb<sup>3+</sup>-doped glasses by 450 nm excitation reveals a new series of photoluminescence emissions at 1200, 1293, and 1418 nm, corresponding to the <sup>6</sup>F<sub>11/2</sub> state to the <sup>6</sup>H<i><sub>J</sub></i> (<i>J</i> = 7/2, 9/2, 11/2) transitions. Under the 976 nm laser excitation, a broad photoluminescence emission from 980 to 1200 nm was detected. A decay lifetime decreased from ~244 to ~43 μs by increasing the Yb<sup>3+</sup> content, ascribing to concentration quenching and the OH content.https://www.mdpi.com/1996-1944/15/9/3314rare-earth ionsbarium fluorotellurite glasseshydroxyl (-OH)bonding parametersphotoluminescence and lifetime |
| spellingShingle | Eric Kumi-Barimah Yan Chen Rebekah Tenwick Mohanad Al-Murish Geeta Sherma Animesh Jha Effect of Yb<sup>3+</sup> on the Structural and Visible to Near-Infrared Wavelength Photoluminescence Properties in Sm<sup>3+</sup>-Yb<sup>3+</sup>-Codoped Barium Fluorotellurite Glasses Materials rare-earth ions barium fluorotellurite glasses hydroxyl (-OH) bonding parameters photoluminescence and lifetime |
| title | Effect of Yb<sup>3+</sup> on the Structural and Visible to Near-Infrared Wavelength Photoluminescence Properties in Sm<sup>3+</sup>-Yb<sup>3+</sup>-Codoped Barium Fluorotellurite Glasses |
| title_full | Effect of Yb<sup>3+</sup> on the Structural and Visible to Near-Infrared Wavelength Photoluminescence Properties in Sm<sup>3+</sup>-Yb<sup>3+</sup>-Codoped Barium Fluorotellurite Glasses |
| title_fullStr | Effect of Yb<sup>3+</sup> on the Structural and Visible to Near-Infrared Wavelength Photoluminescence Properties in Sm<sup>3+</sup>-Yb<sup>3+</sup>-Codoped Barium Fluorotellurite Glasses |
| title_full_unstemmed | Effect of Yb<sup>3+</sup> on the Structural and Visible to Near-Infrared Wavelength Photoluminescence Properties in Sm<sup>3+</sup>-Yb<sup>3+</sup>-Codoped Barium Fluorotellurite Glasses |
| title_short | Effect of Yb<sup>3+</sup> on the Structural and Visible to Near-Infrared Wavelength Photoluminescence Properties in Sm<sup>3+</sup>-Yb<sup>3+</sup>-Codoped Barium Fluorotellurite Glasses |
| title_sort | effect of yb sup 3 sup on the structural and visible to near infrared wavelength photoluminescence properties in sm sup 3 sup yb sup 3 sup codoped barium fluorotellurite glasses |
| topic | rare-earth ions barium fluorotellurite glasses hydroxyl (-OH) bonding parameters photoluminescence and lifetime |
| url | https://www.mdpi.com/1996-1944/15/9/3314 |
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