Fixed Yellow-to-Blue Intensity Ratio of Dy<sup>3+</sup> in KY(CO<sub>3</sub>)<sub>2</sub> Host for Emission Color Tuning
Dy<sup>3+</sup>, Ce<sup>3+</sup> co-doped KY(CO<sub>3</sub>)<sub>2</sub> phosphors with a monoclinic structure were synthesized using the hydrothermal method to create a fixed yellow-to-blue ratio emission. The [YO<sub>8</sub>] polyhedron,...
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MDPI AG
2024-03-01
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| Online Access: | https://www.mdpi.com/1996-1944/17/6/1438 |
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| author | Lei Huang Jian Qian Shijian Sun Dechuan Li |
| author_facet | Lei Huang Jian Qian Shijian Sun Dechuan Li |
| author_sort | Lei Huang |
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| description | Dy<sup>3+</sup>, Ce<sup>3+</sup> co-doped KY(CO<sub>3</sub>)<sub>2</sub> phosphors with a monoclinic structure were synthesized using the hydrothermal method to create a fixed yellow-to-blue ratio emission. The [YO<sub>8</sub>] polyhedron, consisting of a Y atom and eight oxygen atoms, forms a relatively independent microstructure within the KY(CO<sub>3</sub>)<sub>2</sub> host. Y<sup>3+</sup> ions are partially replaced by Ce<sup>3+</sup> or Dy<sup>3+</sup> ions to construct the [CeO<sub>8</sub>] or [DyO<sub>8</sub>] polyhedral fluorescence emission unit. The spectral measurements indicate that Ce<sup>3+</sup> and Dy<sup>3+</sup> can maintain relatively independent fluorescence emission characteristics in the KY(CO<sub>3</sub>)<sub>2</sub> host. The yellow-to-blue intensity ratio of Dy<sup>3+</sup> remains close to 1 and does not change with the variation in the doping concentration of KY(CO<sub>3</sub>)<sub>2</sub>:Dy<sup>3+</sup> and KY(CO<sub>3</sub>)<sub>2</sub>:Dy<sup>3+</sup>,Ce<sup>3+</sup> phosphors. When Ce<sup>3+</sup> and Dy<sup>3+</sup> are co-doped with KY(CO<sub>3</sub>)<sub>2</sub>, the emission intensities of Dy<sup>3+</sup> under 339 nm and 365 nm excitation increase by 8.43 and 2.32 times, respectively, through resonance energy transfer and cross-relaxation. All Ce<sup>3+</sup>-doped KY(CO<sub>3</sub>)<sub>2</sub>:Dy<sup>3+</sup> phosphors can emit white light. Among them, the emitted light of KY(CO<sub>3</sub>)<sub>2</sub>:3%Dy<sup>3+</sup>,5%Ce<sup>3+</sup> is closest to standard daylight. Therefore, a stable [YO<sub>8</sub>] polyhedral structure can be used to achieve more color tuning of light. |
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| institution | Directory Open Access Journal |
| issn | 1996-1944 |
| language | English |
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| spelling | doaj.art-31bfa01aa75b4156acef0f9a0aa4c08c2024-03-27T13:52:50ZengMDPI AGMaterials1996-19442024-03-01176143810.3390/ma17061438Fixed Yellow-to-Blue Intensity Ratio of Dy<sup>3+</sup> in KY(CO<sub>3</sub>)<sub>2</sub> Host for Emission Color TuningLei Huang0Jian Qian1Shijian Sun2Dechuan Li3School of Physics and Electronic Information, Huaibei Normal University, Huaibei 235000, ChinaSchool of Physics and Electronic Information, Huaibei Normal University, Huaibei 235000, ChinaSchool of Physics and Electronic Information, Huaibei Normal University, Huaibei 235000, ChinaSchool of Physics and Electronic Information, Huaibei Normal University, Huaibei 235000, ChinaDy<sup>3+</sup>, Ce<sup>3+</sup> co-doped KY(CO<sub>3</sub>)<sub>2</sub> phosphors with a monoclinic structure were synthesized using the hydrothermal method to create a fixed yellow-to-blue ratio emission. The [YO<sub>8</sub>] polyhedron, consisting of a Y atom and eight oxygen atoms, forms a relatively independent microstructure within the KY(CO<sub>3</sub>)<sub>2</sub> host. Y<sup>3+</sup> ions are partially replaced by Ce<sup>3+</sup> or Dy<sup>3+</sup> ions to construct the [CeO<sub>8</sub>] or [DyO<sub>8</sub>] polyhedral fluorescence emission unit. The spectral measurements indicate that Ce<sup>3+</sup> and Dy<sup>3+</sup> can maintain relatively independent fluorescence emission characteristics in the KY(CO<sub>3</sub>)<sub>2</sub> host. The yellow-to-blue intensity ratio of Dy<sup>3+</sup> remains close to 1 and does not change with the variation in the doping concentration of KY(CO<sub>3</sub>)<sub>2</sub>:Dy<sup>3+</sup> and KY(CO<sub>3</sub>)<sub>2</sub>:Dy<sup>3+</sup>,Ce<sup>3+</sup> phosphors. When Ce<sup>3+</sup> and Dy<sup>3+</sup> are co-doped with KY(CO<sub>3</sub>)<sub>2</sub>, the emission intensities of Dy<sup>3+</sup> under 339 nm and 365 nm excitation increase by 8.43 and 2.32 times, respectively, through resonance energy transfer and cross-relaxation. All Ce<sup>3+</sup>-doped KY(CO<sub>3</sub>)<sub>2</sub>:Dy<sup>3+</sup> phosphors can emit white light. Among them, the emitted light of KY(CO<sub>3</sub>)<sub>2</sub>:3%Dy<sup>3+</sup>,5%Ce<sup>3+</sup> is closest to standard daylight. Therefore, a stable [YO<sub>8</sub>] polyhedral structure can be used to achieve more color tuning of light.https://www.mdpi.com/1996-1944/17/6/1438Dy<sup>3+</sup>color tuningintensity ratiophosphors |
| spellingShingle | Lei Huang Jian Qian Shijian Sun Dechuan Li Fixed Yellow-to-Blue Intensity Ratio of Dy<sup>3+</sup> in KY(CO<sub>3</sub>)<sub>2</sub> Host for Emission Color Tuning Materials Dy<sup>3+</sup> color tuning intensity ratio phosphors |
| title | Fixed Yellow-to-Blue Intensity Ratio of Dy<sup>3+</sup> in KY(CO<sub>3</sub>)<sub>2</sub> Host for Emission Color Tuning |
| title_full | Fixed Yellow-to-Blue Intensity Ratio of Dy<sup>3+</sup> in KY(CO<sub>3</sub>)<sub>2</sub> Host for Emission Color Tuning |
| title_fullStr | Fixed Yellow-to-Blue Intensity Ratio of Dy<sup>3+</sup> in KY(CO<sub>3</sub>)<sub>2</sub> Host for Emission Color Tuning |
| title_full_unstemmed | Fixed Yellow-to-Blue Intensity Ratio of Dy<sup>3+</sup> in KY(CO<sub>3</sub>)<sub>2</sub> Host for Emission Color Tuning |
| title_short | Fixed Yellow-to-Blue Intensity Ratio of Dy<sup>3+</sup> in KY(CO<sub>3</sub>)<sub>2</sub> Host for Emission Color Tuning |
| title_sort | fixed yellow to blue intensity ratio of dy sup 3 sup in ky co sub 3 sub sub 2 sub host for emission color tuning |
| topic | Dy<sup>3+</sup> color tuning intensity ratio phosphors |
| url | https://www.mdpi.com/1996-1944/17/6/1438 |
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