Enhancing the Luminescence of La<sub>3</sub>Mg<sub>2</sub>NbO<sub>9</sub>:Mn<sup>4+</sup> Phosphor through H<sub>3</sub>BO<sub>3</sub> and Charge Compensator Co-Doping for Use in Plant Growth Lamps
Mn<sup>4+</sup>-doped red-light-emitting phosphors have become a research hotspot that can effectively enhance photosynthesis and promote morphogenesis in plants. Herein, the red phosphor La<sub>3</sub>Mg<sub>2</sub>NbO<sub>9</sub>:Mn<sup>4+</...
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| Format: | Article |
| Language: | English |
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MDPI AG
2024-03-01
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| Series: | Molecules |
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| Online Access: | https://www.mdpi.com/1420-3049/29/6/1402 |
| _version_ | 1797239848379088896 |
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| author | Zaifa Yang Ruoxuan Wang Shuyu Yang Hongxia Bu Jingfen Zhao |
| author_facet | Zaifa Yang Ruoxuan Wang Shuyu Yang Hongxia Bu Jingfen Zhao |
| author_sort | Zaifa Yang |
| collection | DOAJ |
| description | Mn<sup>4+</sup>-doped red-light-emitting phosphors have become a research hotspot that can effectively enhance photosynthesis and promote morphogenesis in plants. Herein, the red phosphor La<sub>3</sub>Mg<sub>2</sub>NbO<sub>9</sub>:Mn<sup>4+</sup> was synthesized through the solid-state reaction method. The effects of adding H<sub>3</sub>BO<sub>3</sub> and a charge compensator R<sup>+</sup> (R = Li, Na, K) on the crystal structure, morphology, quantum efficiency, and luminous performance of the La<sub>3</sub>Mg<sub>2</sub>NbO<sub>9</sub>:Mn<sup>4+</sup> phosphor were systematically analyzed, respectively. The results showed that adding H<sub>3</sub>BO<sub>3</sub> flux and a charge compensator improved the quantum efficiency and luminescence intensity. The emission intensity of the phosphor was enhanced about 5.9 times when Li<sup>+</sup> was used as the charge compensator, while it was enhanced about 240% with the addition of H<sub>3</sub>BO<sub>3</sub> flux. Remarkably, it was also found that the addition of H<sub>3</sub>BO<sub>3</sub> flux and a charge compensator simultaneously improved the thermal stability at 423 K from 47.3% to 68.9%. The prototype red LED fabricated using the La<sub>3</sub>Mg<sub>2</sub>NbO<sub>9</sub>:Mn<sup>4+</sup>,H<sub>3</sub>BO<sub>3</sub>,Li<sup>+</sup> phosphor exhibited a perfect overlap with the phytochrome absorption band for plant growth. All of these results indicate that the La<sub>3</sub>Mg<sub>2</sub>NbO<sub>9</sub>:Mn<sup>4+</sup>,H<sub>3</sub>BO<sub>3</sub>,Li<sup>+</sup> phosphor has great potential for use in agricultural plant lighting. |
| first_indexed | 2024-04-24T17:58:03Z |
| format | Article |
| id | doaj.art-2d19a7d16904479383ba5d91b4e1d0f2 |
| institution | Directory Open Access Journal |
| issn | 1420-3049 |
| language | English |
| last_indexed | 2024-04-24T17:58:03Z |
| publishDate | 2024-03-01 |
| publisher | MDPI AG |
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| series | Molecules |
| spelling | doaj.art-2d19a7d16904479383ba5d91b4e1d0f22024-03-27T13:57:17ZengMDPI AGMolecules1420-30492024-03-01296140210.3390/molecules29061402Enhancing the Luminescence of La<sub>3</sub>Mg<sub>2</sub>NbO<sub>9</sub>:Mn<sup>4+</sup> Phosphor through H<sub>3</sub>BO<sub>3</sub> and Charge Compensator Co-Doping for Use in Plant Growth LampsZaifa Yang0Ruoxuan Wang1Shuyu Yang2Hongxia Bu3Jingfen Zhao4College of Physics and Electronic Engineering, Qilu Normal University, Jinan 250200, ChinaCollege of Physics and Electronic Engineering, Qilu Normal University, Jinan 250200, ChinaCollege of Physics and Electronic Engineering, Qilu Normal University, Jinan 250200, ChinaCollege of Physics and Electronic Engineering, Qilu Normal University, Jinan 250200, ChinaCollege of Physics and Electronic Engineering, Qilu Normal University, Jinan 250200, ChinaMn<sup>4+</sup>-doped red-light-emitting phosphors have become a research hotspot that can effectively enhance photosynthesis and promote morphogenesis in plants. Herein, the red phosphor La<sub>3</sub>Mg<sub>2</sub>NbO<sub>9</sub>:Mn<sup>4+</sup> was synthesized through the solid-state reaction method. The effects of adding H<sub>3</sub>BO<sub>3</sub> and a charge compensator R<sup>+</sup> (R = Li, Na, K) on the crystal structure, morphology, quantum efficiency, and luminous performance of the La<sub>3</sub>Mg<sub>2</sub>NbO<sub>9</sub>:Mn<sup>4+</sup> phosphor were systematically analyzed, respectively. The results showed that adding H<sub>3</sub>BO<sub>3</sub> flux and a charge compensator improved the quantum efficiency and luminescence intensity. The emission intensity of the phosphor was enhanced about 5.9 times when Li<sup>+</sup> was used as the charge compensator, while it was enhanced about 240% with the addition of H<sub>3</sub>BO<sub>3</sub> flux. Remarkably, it was also found that the addition of H<sub>3</sub>BO<sub>3</sub> flux and a charge compensator simultaneously improved the thermal stability at 423 K from 47.3% to 68.9%. The prototype red LED fabricated using the La<sub>3</sub>Mg<sub>2</sub>NbO<sub>9</sub>:Mn<sup>4+</sup>,H<sub>3</sub>BO<sub>3</sub>,Li<sup>+</sup> phosphor exhibited a perfect overlap with the phytochrome absorption band for plant growth. All of these results indicate that the La<sub>3</sub>Mg<sub>2</sub>NbO<sub>9</sub>:Mn<sup>4+</sup>,H<sub>3</sub>BO<sub>3</sub>,Li<sup>+</sup> phosphor has great potential for use in agricultural plant lighting.https://www.mdpi.com/1420-3049/29/6/1402phosphorcharge compensatorH<sub>3</sub>BO<sub>3</sub>plant growth lamp |
| spellingShingle | Zaifa Yang Ruoxuan Wang Shuyu Yang Hongxia Bu Jingfen Zhao Enhancing the Luminescence of La<sub>3</sub>Mg<sub>2</sub>NbO<sub>9</sub>:Mn<sup>4+</sup> Phosphor through H<sub>3</sub>BO<sub>3</sub> and Charge Compensator Co-Doping for Use in Plant Growth Lamps Molecules phosphor charge compensator H<sub>3</sub>BO<sub>3</sub> plant growth lamp |
| title | Enhancing the Luminescence of La<sub>3</sub>Mg<sub>2</sub>NbO<sub>9</sub>:Mn<sup>4+</sup> Phosphor through H<sub>3</sub>BO<sub>3</sub> and Charge Compensator Co-Doping for Use in Plant Growth Lamps |
| title_full | Enhancing the Luminescence of La<sub>3</sub>Mg<sub>2</sub>NbO<sub>9</sub>:Mn<sup>4+</sup> Phosphor through H<sub>3</sub>BO<sub>3</sub> and Charge Compensator Co-Doping for Use in Plant Growth Lamps |
| title_fullStr | Enhancing the Luminescence of La<sub>3</sub>Mg<sub>2</sub>NbO<sub>9</sub>:Mn<sup>4+</sup> Phosphor through H<sub>3</sub>BO<sub>3</sub> and Charge Compensator Co-Doping for Use in Plant Growth Lamps |
| title_full_unstemmed | Enhancing the Luminescence of La<sub>3</sub>Mg<sub>2</sub>NbO<sub>9</sub>:Mn<sup>4+</sup> Phosphor through H<sub>3</sub>BO<sub>3</sub> and Charge Compensator Co-Doping for Use in Plant Growth Lamps |
| title_short | Enhancing the Luminescence of La<sub>3</sub>Mg<sub>2</sub>NbO<sub>9</sub>:Mn<sup>4+</sup> Phosphor through H<sub>3</sub>BO<sub>3</sub> and Charge Compensator Co-Doping for Use in Plant Growth Lamps |
| title_sort | enhancing the luminescence of la sub 3 sub mg sub 2 sub nbo sub 9 sub mn sup 4 sup phosphor through h sub 3 sub bo sub 3 sub and charge compensator co doping for use in plant growth lamps |
| topic | phosphor charge compensator H<sub>3</sub>BO<sub>3</sub> plant growth lamp |
| url | https://www.mdpi.com/1420-3049/29/6/1402 |
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