Enhancement of Luminescence Efficiency of Y<sub>2</sub>O<sub>3</sub> Nanophosphor via Core/Shell Structure
We successfully fabricated Y<sub>2</sub>O<sub>3</sub>:RE<sup>3+</sup> (RE = Eu, Tb, and Dy) core and core–shell nanophosphors by the molten salt method and sol–gel processes with Y<sub>2</sub>O<sub>3</sub> core size of the order of 100~150...
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MDPI AG
2021-06-01
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| Series: | Nanomaterials |
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| Online Access: | https://www.mdpi.com/2079-4991/11/6/1563 |
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| author | Jae-Young Hyun Ki-Hyun Kim Jae-Pil Kim Won-Bin Im Kadathala Linganna Ju-Hyeon Choi |
| author_facet | Jae-Young Hyun Ki-Hyun Kim Jae-Pil Kim Won-Bin Im Kadathala Linganna Ju-Hyeon Choi |
| author_sort | Jae-Young Hyun |
| collection | DOAJ |
| description | We successfully fabricated Y<sub>2</sub>O<sub>3</sub>:RE<sup>3+</sup> (RE = Eu, Tb, and Dy) core and core–shell nanophosphors by the molten salt method and sol–gel processes with Y<sub>2</sub>O<sub>3</sub> core size of the order of 100~150 nm. The structural and morphological studies of the RE<sup>3+</sup>-doped Y<sub>2</sub>O<sub>3</sub> nanophosphors are analyzed by using XRD, SEM and TEM techniques, respectively. The concentration and annealing temperature dependent structural and luminescence characteristics were studied for Y<sub>2</sub>O<sub>3</sub>:RE<sup>3+</sup> core and core–shell nanophosphors. It is observed that the XRD peaks became narrower as annealing temperature increased in the core–shell nanophosphor. This indicates that annealing at higher temperature improves the crystallinity which in turn enhances the average crystallite size. The emission intensity and quantum yield of the Eu<sup>3+</sup>-doped Y<sub>2</sub>O<sub>3</sub> core and core–shell nanoparticles increased significantly when annealing temperature is varied from 450 to 550 °C. No considerable variation was noticed in the case of Y<sub>2</sub>O<sub>3</sub>:Tb<sup>3+</sup> and Y<sub>2</sub>O<sub>3</sub>:Dy<sup>3+</sup> core and core–shell nanophosphors. |
| first_indexed | 2024-03-10T10:26:14Z |
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| id | doaj.art-4dc54dcd05b54c5e83b08ac5f8b2a716 |
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| issn | 2079-4991 |
| language | English |
| last_indexed | 2024-03-10T10:26:14Z |
| publishDate | 2021-06-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Nanomaterials |
| spelling | doaj.art-4dc54dcd05b54c5e83b08ac5f8b2a7162023-11-22T00:01:01ZengMDPI AGNanomaterials2079-49912021-06-01116156310.3390/nano11061563Enhancement of Luminescence Efficiency of Y<sub>2</sub>O<sub>3</sub> Nanophosphor via Core/Shell StructureJae-Young Hyun0Ki-Hyun Kim1Jae-Pil Kim2Won-Bin Im3Kadathala Linganna4Ju-Hyeon Choi5Korea Conformity Laboratories, 17-22, Cheomdangwagi-ro 208 beon-gil, Buk-gu, Gwangju 61011, KoreaIntelligent Optical Module Research Center, Korea Photonics Technology Institute, Cheomdanvenchure-ro 108 beon-gil 9, Buk-gu, Gwangju 500-779, KoreaIntelligent Optical Module Research Center, Korea Photonics Technology Institute, Cheomdanvenchure-ro 108 beon-gil 9, Buk-gu, Gwangju 500-779, KoreaDepartment of Materials Science and Engineering, Hanyang University, 222, Wangsimni-ro, Seongdong-gu, Seoul 04763, KoreaIntelligent Optical Module Research Center, Korea Photonics Technology Institute, Cheomdanvenchure-ro 108 beon-gil 9, Buk-gu, Gwangju 500-779, KoreaIntelligent Optical Module Research Center, Korea Photonics Technology Institute, Cheomdanvenchure-ro 108 beon-gil 9, Buk-gu, Gwangju 500-779, KoreaWe successfully fabricated Y<sub>2</sub>O<sub>3</sub>:RE<sup>3+</sup> (RE = Eu, Tb, and Dy) core and core–shell nanophosphors by the molten salt method and sol–gel processes with Y<sub>2</sub>O<sub>3</sub> core size of the order of 100~150 nm. The structural and morphological studies of the RE<sup>3+</sup>-doped Y<sub>2</sub>O<sub>3</sub> nanophosphors are analyzed by using XRD, SEM and TEM techniques, respectively. The concentration and annealing temperature dependent structural and luminescence characteristics were studied for Y<sub>2</sub>O<sub>3</sub>:RE<sup>3+</sup> core and core–shell nanophosphors. It is observed that the XRD peaks became narrower as annealing temperature increased in the core–shell nanophosphor. This indicates that annealing at higher temperature improves the crystallinity which in turn enhances the average crystallite size. The emission intensity and quantum yield of the Eu<sup>3+</sup>-doped Y<sub>2</sub>O<sub>3</sub> core and core–shell nanoparticles increased significantly when annealing temperature is varied from 450 to 550 °C. No considerable variation was noticed in the case of Y<sub>2</sub>O<sub>3</sub>:Tb<sup>3+</sup> and Y<sub>2</sub>O<sub>3</sub>:Dy<sup>3+</sup> core and core–shell nanophosphors.https://www.mdpi.com/2079-4991/11/6/1563Y<sub>2</sub>O<sub>3</sub> nanophosphorcore–shell structureRE ionsluminescence efficiencyquantum yield |
| spellingShingle | Jae-Young Hyun Ki-Hyun Kim Jae-Pil Kim Won-Bin Im Kadathala Linganna Ju-Hyeon Choi Enhancement of Luminescence Efficiency of Y<sub>2</sub>O<sub>3</sub> Nanophosphor via Core/Shell Structure Nanomaterials Y<sub>2</sub>O<sub>3</sub> nanophosphor core–shell structure RE ions luminescence efficiency quantum yield |
| title | Enhancement of Luminescence Efficiency of Y<sub>2</sub>O<sub>3</sub> Nanophosphor via Core/Shell Structure |
| title_full | Enhancement of Luminescence Efficiency of Y<sub>2</sub>O<sub>3</sub> Nanophosphor via Core/Shell Structure |
| title_fullStr | Enhancement of Luminescence Efficiency of Y<sub>2</sub>O<sub>3</sub> Nanophosphor via Core/Shell Structure |
| title_full_unstemmed | Enhancement of Luminescence Efficiency of Y<sub>2</sub>O<sub>3</sub> Nanophosphor via Core/Shell Structure |
| title_short | Enhancement of Luminescence Efficiency of Y<sub>2</sub>O<sub>3</sub> Nanophosphor via Core/Shell Structure |
| title_sort | enhancement of luminescence efficiency of y sub 2 sub o sub 3 sub nanophosphor via core shell structure |
| topic | Y<sub>2</sub>O<sub>3</sub> nanophosphor core–shell structure RE ions luminescence efficiency quantum yield |
| url | https://www.mdpi.com/2079-4991/11/6/1563 |
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