Influence of Sintering Parameters on Spectroscopic Properties of BMW: Eu<sup>3+</sup> Ceramic Materials Prepared by HPLT Technique
In this work, Ba<sub>2</sub>MgWO<sub>6</sub>: Eu<sup>3+</sup> (BMW: Eu<sup>3+</sup>) ceramic materials with a double perovskite structure were sintered using the High-Pressure Low-Temperature sintering (HPLT) technique. As part of the research, the inf...
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MDPI AG
2022-10-01
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| Online Access: | https://www.mdpi.com/1996-1944/15/21/7410 |
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| author | Natalia Miniajluk-Gaweł Robert Tomala Bartosz Bondzior Przemysław Jacek Dereń |
| author_facet | Natalia Miniajluk-Gaweł Robert Tomala Bartosz Bondzior Przemysław Jacek Dereń |
| author_sort | Natalia Miniajluk-Gaweł |
| collection | DOAJ |
| description | In this work, Ba<sub>2</sub>MgWO<sub>6</sub>: Eu<sup>3+</sup> (BMW: Eu<sup>3+</sup>) ceramic materials with a double perovskite structure were sintered using the High-Pressure Low-Temperature sintering (HPLT) technique. As part of the research, the influence of pressure (CP), sintering temperature (CT), and sintering time (CTS) on the structure and luminescence of the doped BMW were determined. Structural analysis via XRD and SEM + EDS and spectroscopic analysis via emission and excitation spectra, decay time, and absorption spectra of the obtained ceramics were performed. Dense double perovskite ceramics were obtained with a cubic structure with optimal sintering parameters: T = 500 °C, <i>p</i> = 8 GPa, and t = 1 min. The increase in temperature caused an increased extinction of the luminescence due to the diffusion of carbon into the ceramics. The increase in pressure led to the formation of the amorphous phase, which increased the speed of non-radiative transitions and also led to the extinction of the luminescence. The increase in sintering time from 1 to 3 min enhanced the luminescence output, but when the ceramic was sintered for 5 min, the luminescence was quenched, most likely by increasing the rate of the non-radiative process, as evidenced by reduced decay time. |
| first_indexed | 2024-03-09T18:54:01Z |
| format | Article |
| id | doaj.art-a5589f22afe74ef0b510313fc0ab7dcd |
| institution | Directory Open Access Journal |
| issn | 1996-1944 |
| language | English |
| last_indexed | 2024-03-09T18:54:01Z |
| publishDate | 2022-10-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Materials |
| spelling | doaj.art-a5589f22afe74ef0b510313fc0ab7dcd2023-11-24T05:34:48ZengMDPI AGMaterials1996-19442022-10-011521741010.3390/ma15217410Influence of Sintering Parameters on Spectroscopic Properties of BMW: Eu<sup>3+</sup> Ceramic Materials Prepared by HPLT TechniqueNatalia Miniajluk-Gaweł0Robert Tomala1Bartosz Bondzior2Przemysław Jacek Dereń3Institute of Low Temperature and Structure Research, Polish Academy of Science, Okólna 2, 50-422 Wroclaw, PolandInstitute of Low Temperature and Structure Research, Polish Academy of Science, Okólna 2, 50-422 Wroclaw, PolandInstitute of Low Temperature and Structure Research, Polish Academy of Science, Okólna 2, 50-422 Wroclaw, PolandInstitute of Low Temperature and Structure Research, Polish Academy of Science, Okólna 2, 50-422 Wroclaw, PolandIn this work, Ba<sub>2</sub>MgWO<sub>6</sub>: Eu<sup>3+</sup> (BMW: Eu<sup>3+</sup>) ceramic materials with a double perovskite structure were sintered using the High-Pressure Low-Temperature sintering (HPLT) technique. As part of the research, the influence of pressure (CP), sintering temperature (CT), and sintering time (CTS) on the structure and luminescence of the doped BMW were determined. Structural analysis via XRD and SEM + EDS and spectroscopic analysis via emission and excitation spectra, decay time, and absorption spectra of the obtained ceramics were performed. Dense double perovskite ceramics were obtained with a cubic structure with optimal sintering parameters: T = 500 °C, <i>p</i> = 8 GPa, and t = 1 min. The increase in temperature caused an increased extinction of the luminescence due to the diffusion of carbon into the ceramics. The increase in pressure led to the formation of the amorphous phase, which increased the speed of non-radiative transitions and also led to the extinction of the luminescence. The increase in sintering time from 1 to 3 min enhanced the luminescence output, but when the ceramic was sintered for 5 min, the luminescence was quenched, most likely by increasing the rate of the non-radiative process, as evidenced by reduced decay time.https://www.mdpi.com/1996-1944/15/21/7410double perovskiteEu<sup>3+</sup> ionsceramic materialsHPLT techniqueWLEDs |
| spellingShingle | Natalia Miniajluk-Gaweł Robert Tomala Bartosz Bondzior Przemysław Jacek Dereń Influence of Sintering Parameters on Spectroscopic Properties of BMW: Eu<sup>3+</sup> Ceramic Materials Prepared by HPLT Technique Materials double perovskite Eu<sup>3+</sup> ions ceramic materials HPLT technique WLEDs |
| title | Influence of Sintering Parameters on Spectroscopic Properties of BMW: Eu<sup>3+</sup> Ceramic Materials Prepared by HPLT Technique |
| title_full | Influence of Sintering Parameters on Spectroscopic Properties of BMW: Eu<sup>3+</sup> Ceramic Materials Prepared by HPLT Technique |
| title_fullStr | Influence of Sintering Parameters on Spectroscopic Properties of BMW: Eu<sup>3+</sup> Ceramic Materials Prepared by HPLT Technique |
| title_full_unstemmed | Influence of Sintering Parameters on Spectroscopic Properties of BMW: Eu<sup>3+</sup> Ceramic Materials Prepared by HPLT Technique |
| title_short | Influence of Sintering Parameters on Spectroscopic Properties of BMW: Eu<sup>3+</sup> Ceramic Materials Prepared by HPLT Technique |
| title_sort | influence of sintering parameters on spectroscopic properties of bmw eu sup 3 sup ceramic materials prepared by hplt technique |
| topic | double perovskite Eu<sup>3+</sup> ions ceramic materials HPLT technique WLEDs |
| url | https://www.mdpi.com/1996-1944/15/21/7410 |
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