Synthesis of Eu<sup>3+</sup>-Doped NaGd<sub>9</sub>Si<sub>6</sub>O<sub>26</sub> Sub-Microcrystals from a NaGdF<sub>4</sub>@SiO<sub>2</sub> Structure
Rare earth silicate phosphors of high quantum efficiency with a stable performance are promising materials in the fields of display and illumination. The grain sizes of products synthesized via the conventional solid-state reaction method are usually too large to satisfy the requirements of color ca...
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MDPI AG
2023-05-01
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| Series: | Molecules |
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| Online Access: | https://www.mdpi.com/1420-3049/28/10/4214 |
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| author | Tianyun Du Xiaojie Xue Xiuxun Han |
| author_facet | Tianyun Du Xiaojie Xue Xiuxun Han |
| author_sort | Tianyun Du |
| collection | DOAJ |
| description | Rare earth silicate phosphors of high quantum efficiency with a stable performance are promising materials in the fields of display and illumination. The grain sizes of products synthesized via the conventional solid-state reaction method are usually too large to satisfy the requirements of color cast and extraction efficiency in high-resolution light-emitting devices (LEDs). We designed a synthetic route and successfully fabricated rare earth silicate NaGd<sub>9</sub>Si<sub>6</sub>O<sub>26</sub> (NGSO) sub-microcrystals with a size ranging from 550 to 1200 nm. The reaction mechanism and optical properties were systematically investigated. The quantum efficiency of Eu<sup>3+</sup>-activated NGSO sub-microcrystals was about 36.6%. The LED encapsulated with these sub-microcrystals showed lower color deviation and higher lumen efficiency and lumen flux compared to that with NGSO fabricated using the conventional solid state reaction method. |
| first_indexed | 2024-03-11T03:26:36Z |
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| id | doaj.art-9709fd451d0f43df9fbb152bc2564a5f |
| institution | Directory Open Access Journal |
| issn | 1420-3049 |
| language | English |
| last_indexed | 2024-03-11T03:26:36Z |
| publishDate | 2023-05-01 |
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| series | Molecules |
| spelling | doaj.art-9709fd451d0f43df9fbb152bc2564a5f2023-11-18T02:40:59ZengMDPI AGMolecules1420-30492023-05-012810421410.3390/molecules28104214Synthesis of Eu<sup>3+</sup>-Doped NaGd<sub>9</sub>Si<sub>6</sub>O<sub>26</sub> Sub-Microcrystals from a NaGdF<sub>4</sub>@SiO<sub>2</sub> StructureTianyun Du0Xiaojie Xue1Xiuxun Han2Institute of Optoelectronic Materials and Devices, Faculty of Materials Metallurgy and Chemistry, Jiangxi University of Science and Technology, Ganzhou 341000, ChinaSchool of Automation Engineering, University of Electronic Science and Technology of China, Chengdu 611731, ChinaInstitute of Optoelectronic Materials and Devices, Faculty of Materials Metallurgy and Chemistry, Jiangxi University of Science and Technology, Ganzhou 341000, ChinaRare earth silicate phosphors of high quantum efficiency with a stable performance are promising materials in the fields of display and illumination. The grain sizes of products synthesized via the conventional solid-state reaction method are usually too large to satisfy the requirements of color cast and extraction efficiency in high-resolution light-emitting devices (LEDs). We designed a synthetic route and successfully fabricated rare earth silicate NaGd<sub>9</sub>Si<sub>6</sub>O<sub>26</sub> (NGSO) sub-microcrystals with a size ranging from 550 to 1200 nm. The reaction mechanism and optical properties were systematically investigated. The quantum efficiency of Eu<sup>3+</sup>-activated NGSO sub-microcrystals was about 36.6%. The LED encapsulated with these sub-microcrystals showed lower color deviation and higher lumen efficiency and lumen flux compared to that with NGSO fabricated using the conventional solid state reaction method.https://www.mdpi.com/1420-3049/28/10/4214rare earth silicate sub-microcrystalsNaGd9Si6O26low color deviation |
| spellingShingle | Tianyun Du Xiaojie Xue Xiuxun Han Synthesis of Eu<sup>3+</sup>-Doped NaGd<sub>9</sub>Si<sub>6</sub>O<sub>26</sub> Sub-Microcrystals from a NaGdF<sub>4</sub>@SiO<sub>2</sub> Structure Molecules rare earth silicate sub-microcrystals NaGd9Si6O26 low color deviation |
| title | Synthesis of Eu<sup>3+</sup>-Doped NaGd<sub>9</sub>Si<sub>6</sub>O<sub>26</sub> Sub-Microcrystals from a NaGdF<sub>4</sub>@SiO<sub>2</sub> Structure |
| title_full | Synthesis of Eu<sup>3+</sup>-Doped NaGd<sub>9</sub>Si<sub>6</sub>O<sub>26</sub> Sub-Microcrystals from a NaGdF<sub>4</sub>@SiO<sub>2</sub> Structure |
| title_fullStr | Synthesis of Eu<sup>3+</sup>-Doped NaGd<sub>9</sub>Si<sub>6</sub>O<sub>26</sub> Sub-Microcrystals from a NaGdF<sub>4</sub>@SiO<sub>2</sub> Structure |
| title_full_unstemmed | Synthesis of Eu<sup>3+</sup>-Doped NaGd<sub>9</sub>Si<sub>6</sub>O<sub>26</sub> Sub-Microcrystals from a NaGdF<sub>4</sub>@SiO<sub>2</sub> Structure |
| title_short | Synthesis of Eu<sup>3+</sup>-Doped NaGd<sub>9</sub>Si<sub>6</sub>O<sub>26</sub> Sub-Microcrystals from a NaGdF<sub>4</sub>@SiO<sub>2</sub> Structure |
| title_sort | synthesis of eu sup 3 sup doped nagd sub 9 sub si sub 6 sub o sub 26 sub sub microcrystals from a nagdf sub 4 sub sio sub 2 sub structure |
| topic | rare earth silicate sub-microcrystals NaGd9Si6O26 low color deviation |
| url | https://www.mdpi.com/1420-3049/28/10/4214 |
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