Strong upconversion–downshifting green emission from Tb3+ ions in core/shell/shell-structured nanophosphors
Abstract Efficient upconversion (UC)–downshifting (DS), dual-mode-emitting NaGdF4:Yb,Tm/NaGdF4:Tb/NaYF4 core/shell/shell (C/S/S) nanophosphors (NPs) were synthesized. The UC luminescence color changed from blue to sky blue after doping Tb3+ into NaGdF4 shell because Tb3+ emission peak...
| Main Authors: | , , |
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| Format: | Article |
| Language: | English |
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Springer Netherlands
2021
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| Online Access: | https://hdl.handle.net/1721.1/131789 |
| _version_ | 1826191335822983168 |
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| author | Juarez, Xitlali G Ko, Hyungduk Jang, Ho S |
| author2 | Massachusetts Institute of Technology. Department of Materials Science and Engineering |
| author_facet | Massachusetts Institute of Technology. Department of Materials Science and Engineering Juarez, Xitlali G Ko, Hyungduk Jang, Ho S |
| author_sort | Juarez, Xitlali G |
| collection | MIT |
| description | Abstract
Efficient upconversion (UC)–downshifting (DS), dual-mode-emitting NaGdF4:Yb,Tm/NaGdF4:Tb/NaYF4 core/shell/shell (C/S/S) nanophosphors (NPs) were synthesized. The UC luminescence color changed from blue to sky blue after doping Tb3+ into NaGdF4 shell because Tb3+ emission peaks via 5D4 → 7FJ transition were observed with Tm3+ emission peaks via 1D2 → 3F4 and 1G4 → 3H6 transitions through the energy migration UC process of Yb3+ → Tm3+ → Gd3+ → Tb3+. Upon increasing the Tb3+ concentration in the NaGdF4 shell from 5 to 15%, the Commission Internationale de l’Éclairage (CIE) color coordinates changed from (0.2188, 0.2390) to (0.2616, 0.3654). When NaGdF4:Yb(49%),Tm(1%)/NaGdF4:Tb(15%)/NaYF4 NPs were excited using 273 nm ultraviolet light, the C/S/S NPs exhibited bright green light with CIE color coordinates of (0.3354, 0.5090) as a result of energy transfer from Gd3+ to Tb3+. These bright UC–DS, dual-mode-emitting C/S/S NPs could be applied in various applications, including multiplexed imaging and anticounterfeiting. |
| first_indexed | 2024-09-23T08:54:19Z |
| format | Article |
| id | mit-1721.1/131789 |
| institution | Massachusetts Institute of Technology |
| language | English |
| last_indexed | 2024-09-23T08:54:19Z |
| publishDate | 2021 |
| publisher | Springer Netherlands |
| record_format | dspace |
| spelling | mit-1721.1/1317892023-02-17T19:06:30Z Strong upconversion–downshifting green emission from Tb3+ ions in core/shell/shell-structured nanophosphors Juarez, Xitlali G Ko, Hyungduk Jang, Ho S Massachusetts Institute of Technology. Department of Materials Science and Engineering Abstract Efficient upconversion (UC)–downshifting (DS), dual-mode-emitting NaGdF4:Yb,Tm/NaGdF4:Tb/NaYF4 core/shell/shell (C/S/S) nanophosphors (NPs) were synthesized. The UC luminescence color changed from blue to sky blue after doping Tb3+ into NaGdF4 shell because Tb3+ emission peaks via 5D4 → 7FJ transition were observed with Tm3+ emission peaks via 1D2 → 3F4 and 1G4 → 3H6 transitions through the energy migration UC process of Yb3+ → Tm3+ → Gd3+ → Tb3+. Upon increasing the Tb3+ concentration in the NaGdF4 shell from 5 to 15%, the Commission Internationale de l’Éclairage (CIE) color coordinates changed from (0.2188, 0.2390) to (0.2616, 0.3654). When NaGdF4:Yb(49%),Tm(1%)/NaGdF4:Tb(15%)/NaYF4 NPs were excited using 273 nm ultraviolet light, the C/S/S NPs exhibited bright green light with CIE color coordinates of (0.3354, 0.5090) as a result of energy transfer from Gd3+ to Tb3+. These bright UC–DS, dual-mode-emitting C/S/S NPs could be applied in various applications, including multiplexed imaging and anticounterfeiting. 2021-09-20T17:30:16Z 2021-09-20T17:30:16Z 2018-01-23 2020-09-24T20:39:45Z Article http://purl.org/eprint/type/JournalArticle https://hdl.handle.net/1721.1/131789 en https://doi.org/10.1007/s11164-018-3276-5 Article is made available in accordance with the publisher's policy and may be subject to US copyright law. Please refer to the publisher's site for terms of use. Springer Science+Business Media B.V., part of Springer Nature application/pdf Springer Netherlands Springer Netherlands |
| spellingShingle | Juarez, Xitlali G Ko, Hyungduk Jang, Ho S Strong upconversion–downshifting green emission from Tb3+ ions in core/shell/shell-structured nanophosphors |
| title | Strong upconversion–downshifting green emission from Tb3+ ions in core/shell/shell-structured nanophosphors |
| title_full | Strong upconversion–downshifting green emission from Tb3+ ions in core/shell/shell-structured nanophosphors |
| title_fullStr | Strong upconversion–downshifting green emission from Tb3+ ions in core/shell/shell-structured nanophosphors |
| title_full_unstemmed | Strong upconversion–downshifting green emission from Tb3+ ions in core/shell/shell-structured nanophosphors |
| title_short | Strong upconversion–downshifting green emission from Tb3+ ions in core/shell/shell-structured nanophosphors |
| title_sort | strong upconversion downshifting green emission from tb3 ions in core shell shell structured nanophosphors |
| url | https://hdl.handle.net/1721.1/131789 |
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