Simultaneous Dual-mode Emission and Tunable Multicolor in the Time Domain from Lanthanide-doped Core-shell Microcrystals
The dual-mode emission and multicolor outputs in the time domain from core-shell microcrystals are presented. The core-shell microcrystals, with NaYF<sub>4</sub>:Yb/Er as the core and NaYF<sub>4</sub>:Ce/Tb/Eu as the shell, were successfully fabricated by employing the hydrot...
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| Format: | Article |
| Language: | English |
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MDPI AG
2018-12-01
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| Series: | Nanomaterials |
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| Online Access: | https://www.mdpi.com/2079-4991/8/12/1023 |
| _version_ | 1828515555746775040 |
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| author | Dandan Ju Feng Song Adnan Khan Feifei Song Aihua Zhou Xiaoli Gao Huimin Hu Xu Sang Victor Zadkov |
| author_facet | Dandan Ju Feng Song Adnan Khan Feifei Song Aihua Zhou Xiaoli Gao Huimin Hu Xu Sang Victor Zadkov |
| author_sort | Dandan Ju |
| collection | DOAJ |
| description | The dual-mode emission and multicolor outputs in the time domain from core-shell microcrystals are presented. The core-shell microcrystals, with NaYF<sub>4</sub>:Yb/Er as the core and NaYF<sub>4</sub>:Ce/Tb/Eu as the shell, were successfully fabricated by employing the hydrothermal method, which confines the activator ions into a separate region and minimizes the effect of surface quenching. The material is capable of both upconversion and downshifting emission, and their multicolor outputs in response to 980 nm near-infrared (NIR) excitation laser and 252 nm, and 395 nm ultraviolet (UV) excitation light have been investigated. Furthermore, the tunable color emissions by controlling the Tb<sup>3+</sup>- Eu<sup>3+</sup> ratio in shells and the energy transfer of Ce<sup>3+</sup>→Tb<sup>3+</sup>→ Eu<sup>3+</sup> were discussed in details. In addition, color tuning of core-shell-structured microrods from green to red region in the time domain could be obtained by setting suitable delay time. Due to downshifting multicolor outputs (time-resolved and pump-wavelength-induced downshifting) coupled with the upconversion mode, the core-shell microrods can be potentially applied to displays and high-level security. |
| first_indexed | 2024-12-11T18:14:44Z |
| format | Article |
| id | doaj.art-d2be678a28014689b6c5686ded9e6f33 |
| institution | Directory Open Access Journal |
| issn | 2079-4991 |
| language | English |
| last_indexed | 2024-12-11T18:14:44Z |
| publishDate | 2018-12-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Nanomaterials |
| spelling | doaj.art-d2be678a28014689b6c5686ded9e6f332022-12-22T00:55:27ZengMDPI AGNanomaterials2079-49912018-12-01812102310.3390/nano8121023nano8121023Simultaneous Dual-mode Emission and Tunable Multicolor in the Time Domain from Lanthanide-doped Core-shell MicrocrystalsDandan Ju0Feng Song1Adnan Khan2Feifei Song3Aihua Zhou4Xiaoli Gao5Huimin Hu6Xu Sang7Victor Zadkov8School of Physics & The Key Laboratory of Weak Light Nonlinear Photonics, Ministry of Education, Nankai University, Tianjin 300071, ChinaSchool of Physics & The Key Laboratory of Weak Light Nonlinear Photonics, Ministry of Education, Nankai University, Tianjin 300071, ChinaSchool of Physics & The Key Laboratory of Weak Light Nonlinear Photonics, Ministry of Education, Nankai University, Tianjin 300071, ChinaSchool of Physics & The Key Laboratory of Weak Light Nonlinear Photonics, Ministry of Education, Nankai University, Tianjin 300071, ChinaSchool of Physics & The Key Laboratory of Weak Light Nonlinear Photonics, Ministry of Education, Nankai University, Tianjin 300071, ChinaSchool of Physics & The Key Laboratory of Weak Light Nonlinear Photonics, Ministry of Education, Nankai University, Tianjin 300071, ChinaSchool of Physics & The Key Laboratory of Weak Light Nonlinear Photonics, Ministry of Education, Nankai University, Tianjin 300071, ChinaSchool of Physics & The Key Laboratory of Weak Light Nonlinear Photonics, Ministry of Education, Nankai University, Tianjin 300071, ChinaThe Institute of Spectroscopy of the Russian Academy of Sciences, 142190 Moscow, RussiaThe dual-mode emission and multicolor outputs in the time domain from core-shell microcrystals are presented. The core-shell microcrystals, with NaYF<sub>4</sub>:Yb/Er as the core and NaYF<sub>4</sub>:Ce/Tb/Eu as the shell, were successfully fabricated by employing the hydrothermal method, which confines the activator ions into a separate region and minimizes the effect of surface quenching. The material is capable of both upconversion and downshifting emission, and their multicolor outputs in response to 980 nm near-infrared (NIR) excitation laser and 252 nm, and 395 nm ultraviolet (UV) excitation light have been investigated. Furthermore, the tunable color emissions by controlling the Tb<sup>3+</sup>- Eu<sup>3+</sup> ratio in shells and the energy transfer of Ce<sup>3+</sup>→Tb<sup>3+</sup>→ Eu<sup>3+</sup> were discussed in details. In addition, color tuning of core-shell-structured microrods from green to red region in the time domain could be obtained by setting suitable delay time. Due to downshifting multicolor outputs (time-resolved and pump-wavelength-induced downshifting) coupled with the upconversion mode, the core-shell microrods can be potentially applied to displays and high-level security.https://www.mdpi.com/2079-4991/8/12/1023NaYF4:Yb/Er@NaYF4:Ce/Tb/Eu microrodsdual-mode emissiontime-resolved emission spectramulticolor emission |
| spellingShingle | Dandan Ju Feng Song Adnan Khan Feifei Song Aihua Zhou Xiaoli Gao Huimin Hu Xu Sang Victor Zadkov Simultaneous Dual-mode Emission and Tunable Multicolor in the Time Domain from Lanthanide-doped Core-shell Microcrystals Nanomaterials NaYF4:Yb/Er@NaYF4:Ce/Tb/Eu microrods dual-mode emission time-resolved emission spectra multicolor emission |
| title | Simultaneous Dual-mode Emission and Tunable Multicolor in the Time Domain from Lanthanide-doped Core-shell Microcrystals |
| title_full | Simultaneous Dual-mode Emission and Tunable Multicolor in the Time Domain from Lanthanide-doped Core-shell Microcrystals |
| title_fullStr | Simultaneous Dual-mode Emission and Tunable Multicolor in the Time Domain from Lanthanide-doped Core-shell Microcrystals |
| title_full_unstemmed | Simultaneous Dual-mode Emission and Tunable Multicolor in the Time Domain from Lanthanide-doped Core-shell Microcrystals |
| title_short | Simultaneous Dual-mode Emission and Tunable Multicolor in the Time Domain from Lanthanide-doped Core-shell Microcrystals |
| title_sort | simultaneous dual mode emission and tunable multicolor in the time domain from lanthanide doped core shell microcrystals |
| topic | NaYF4:Yb/Er@NaYF4:Ce/Tb/Eu microrods dual-mode emission time-resolved emission spectra multicolor emission |
| url | https://www.mdpi.com/2079-4991/8/12/1023 |
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