Non-Linear Optical Properties of Er<sup>3+</sup>–Yb<sup>3+</sup>-Doped NaGdF<sub>4</sub> Nanostructured Glass–Ceramics
Transparent oxyfluoride glass–ceramics containing NaGdF<sub>4</sub> nanocrystals were prepared by melt-quenching and doped with Er<sup>3+</sup> (0.5 mol%) and different amounts of Yb<sup>3+</sup> (0–2 mol%). The selected dopant concentration the crystallization th...
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MDPI AG
2020-07-01
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| Series: | Nanomaterials |
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| Online Access: | https://www.mdpi.com/2079-4991/10/7/1425 |
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| author | José J. Velázquez Giulio Gorni Rolindes Balda Joaquin Fernández Laura Pascual Alicia Durán Maria J. Pascual |
| author_facet | José J. Velázquez Giulio Gorni Rolindes Balda Joaquin Fernández Laura Pascual Alicia Durán Maria J. Pascual |
| author_sort | José J. Velázquez |
| collection | DOAJ |
| description | Transparent oxyfluoride glass–ceramics containing NaGdF<sub>4</sub> nanocrystals were prepared by melt-quenching and doped with Er<sup>3+</sup> (0.5 mol%) and different amounts of Yb<sup>3+</sup> (0–2 mol%). The selected dopant concentration the crystallization thermal treatments were chosen to obtain the most efficient visible up-conversion emissions, together with near infrared emissions. The crystal size increased with dopant content and treatment time. NaGdF<sub>4</sub> NCs with a size ranging 9–30 nm were obtained after heat treatments at T<sub>g</sub> + 20–80 °C as confirmed by X-ray diffraction and high-resolution transmission electron microscopy. Energy dispersive X-ray analysis shows the incorporation of rare earth ions into the NaGdF<sub>4</sub> nanocrystals. Near-infrared emission spectra, together with the up-conversion emissions were measured. The optical characterization of the glass–ceramics clearly shows that Er<sup>3+</sup> and Yb<sup>3+</sup> ions are incorporated in the crystalline phase. Moreover, visible up-conversion emissions could be tuned by controlling the nanocrystals size through appropriated heat treatment, making possible a correlation between structural and optical properties. |
| first_indexed | 2024-03-10T18:19:56Z |
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| id | doaj.art-8ea2fa45b6a94dbe9515dfcc209212da |
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| issn | 2079-4991 |
| language | English |
| last_indexed | 2024-03-10T18:19:56Z |
| publishDate | 2020-07-01 |
| publisher | MDPI AG |
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| series | Nanomaterials |
| spelling | doaj.art-8ea2fa45b6a94dbe9515dfcc209212da2023-11-20T07:25:57ZengMDPI AGNanomaterials2079-49912020-07-01107142510.3390/nano10071425Non-Linear Optical Properties of Er<sup>3+</sup>–Yb<sup>3+</sup>-Doped NaGdF<sub>4</sub> Nanostructured Glass–CeramicsJosé J. Velázquez0Giulio Gorni1Rolindes Balda2Joaquin Fernández3Laura Pascual4Alicia Durán5Maria J. Pascual6Centre for Functional and Surface Functionalized Glass (FunGlass), Alexander Dubček University of Trenčín, 911 50 Trenčín, SlovakiaInstituto de Cerámica y Vidrio, ICV-CSIC, 28049 Madrid, SpainApplied Physic Department I, Superior School of Engineering, Basque Country University, 48013 Bilbao, SpainDonostia International Physics Center (DIPC), 20018 San Sebastian, SpainInstituto de Catálisis y Petroleoquímica-CSIC, 28049 Madrid, SpainInstituto de Cerámica y Vidrio, ICV-CSIC, 28049 Madrid, SpainInstituto de Cerámica y Vidrio, ICV-CSIC, 28049 Madrid, SpainTransparent oxyfluoride glass–ceramics containing NaGdF<sub>4</sub> nanocrystals were prepared by melt-quenching and doped with Er<sup>3+</sup> (0.5 mol%) and different amounts of Yb<sup>3+</sup> (0–2 mol%). The selected dopant concentration the crystallization thermal treatments were chosen to obtain the most efficient visible up-conversion emissions, together with near infrared emissions. The crystal size increased with dopant content and treatment time. NaGdF<sub>4</sub> NCs with a size ranging 9–30 nm were obtained after heat treatments at T<sub>g</sub> + 20–80 °C as confirmed by X-ray diffraction and high-resolution transmission electron microscopy. Energy dispersive X-ray analysis shows the incorporation of rare earth ions into the NaGdF<sub>4</sub> nanocrystals. Near-infrared emission spectra, together with the up-conversion emissions were measured. The optical characterization of the glass–ceramics clearly shows that Er<sup>3+</sup> and Yb<sup>3+</sup> ions are incorporated in the crystalline phase. Moreover, visible up-conversion emissions could be tuned by controlling the nanocrystals size through appropriated heat treatment, making possible a correlation between structural and optical properties.https://www.mdpi.com/2079-4991/10/7/1425oxyfluoride glass–ceramiccrystallizationrare-earthnonlinear optical properties |
| spellingShingle | José J. Velázquez Giulio Gorni Rolindes Balda Joaquin Fernández Laura Pascual Alicia Durán Maria J. Pascual Non-Linear Optical Properties of Er<sup>3+</sup>–Yb<sup>3+</sup>-Doped NaGdF<sub>4</sub> Nanostructured Glass–Ceramics Nanomaterials oxyfluoride glass–ceramic crystallization rare-earth nonlinear optical properties |
| title | Non-Linear Optical Properties of Er<sup>3+</sup>–Yb<sup>3+</sup>-Doped NaGdF<sub>4</sub> Nanostructured Glass–Ceramics |
| title_full | Non-Linear Optical Properties of Er<sup>3+</sup>–Yb<sup>3+</sup>-Doped NaGdF<sub>4</sub> Nanostructured Glass–Ceramics |
| title_fullStr | Non-Linear Optical Properties of Er<sup>3+</sup>–Yb<sup>3+</sup>-Doped NaGdF<sub>4</sub> Nanostructured Glass–Ceramics |
| title_full_unstemmed | Non-Linear Optical Properties of Er<sup>3+</sup>–Yb<sup>3+</sup>-Doped NaGdF<sub>4</sub> Nanostructured Glass–Ceramics |
| title_short | Non-Linear Optical Properties of Er<sup>3+</sup>–Yb<sup>3+</sup>-Doped NaGdF<sub>4</sub> Nanostructured Glass–Ceramics |
| title_sort | non linear optical properties of er sup 3 sup yb sup 3 sup doped nagdf sub 4 sub nanostructured glass ceramics |
| topic | oxyfluoride glass–ceramic crystallization rare-earth nonlinear optical properties |
| url | https://www.mdpi.com/2079-4991/10/7/1425 |
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