An upconversion luminescence and temperature sensor based on Yb3+/Er3+ co-doped GdSr2AlO5
| Autor: | Yuhua Wang, Gangyi Zhang, Shanshan Du, Qinping Qiang |
|---|---|
| Rok vydání: | 2018 |
| Předmět: |
Morphology (linguistics)
Materials science General Chemical Engineering Upconversion luminescence Analytical chemistry Solid-state 02 engineering and technology General Chemistry 010402 general chemistry 021001 nanoscience & nanotechnology 01 natural sciences Photon upconversion 0104 chemical sciences Tetragonal crystal system 0210 nano-technology Co doped Safety signs |
| Zdroj: | RSC Advances. 8:9512-9518 |
| ISSN: | 2046-2069 |
| DOI: | 10.1039/c7ra13759a |
| Popis: | GdSr2AlO5:Yb3+/Er3+ micro-particles were synthesized by a simple solid state method. The structure, morphology, size and upconversion luminescence features have been characterized. These results indicated that GdSr2AlO5 has a contracted tetragonal cell and has irregular block shaped particles with sizes of about 5 μm. During upconversion, green (2H11/2, 4S3/2 → 4I15/2) (527 nm, 549 nm) and red (4F9/2 → 4I15/2) (665 nm) emissions had been observed, both of which occurred via a two-photon population process. In addition, green UC emission characteristics were studied, and it was found that its temperature ranged from 293 K to 473 K and the sensitivity was 0.0054 K−1 at 473 K. This indicated that GdSr2AlO5:Yb3+/Er3+ micro-particles may have potential application in high temperature environments for safety signs. |
| Databáze: | OpenAIRE |
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