Dual-mode optical temperature sensing behavior of double-perovskite CaGdMgSbO6:Mn4+/Sm3+ phosphors
| Autor: | Junxiang Huang, Jinsheng Liao, Haokun Yan, Liyun Kong, Chaoyang Tu, Jianhua Chen, Minghua Wang, Xinyi Wang |
|---|---|
| Rok vydání: | 2020 |
| Předmět: |
Materials science
Temperature sensing Doping Biophysics Analytical chemistry Phosphor 02 engineering and technology General Chemistry Atmospheric temperature range 010402 general chemistry 021001 nanoscience & nanotechnology Condensed Matter Physics 01 natural sciences Biochemistry Atomic and Molecular Physics and Optics 0104 chemical sciences Ion Activator (phosphor) 0210 nano-technology Luminescence Powder diffraction |
| Zdroj: | Journal of Luminescence. 226:117492 |
| ISSN: | 0022-2313 |
| DOI: | 10.1016/j.jlumin.2020.117492 |
| Popis: | Mn4+ and Sm3+ singly doped and Mn4+/Sm3+ codoped CaGdMgSbO6 (abbreviated as CGMS) phosphors with double perovskite structure have been successfully prepared by the solid-state reaction. X-ray powder diffraction and luminescence spectra were used to analysis their crystal phases and optical properties. Especially, temperature-dependent luminescence spectra and luminescence decay curves of the CGMS:Mn4+/Sm3+ phosphor were measured at a large temperature range of 298–573 K Mn4+ and Sm3+ possess different trends of luminescence change where the luminescence intensity of Mn4+ ions decreases much more rapidly compared to that of Sm3+ ions as the temperature increases. Accordingly, based on the fluorescence intensity ratio (FIR) between the two activator Mn4+ and Sm3+ as well as the luminescence lifetime of Mn4+, the optimal relative sensitivity of temperature sensing in the CGMS:Mn4+/Sm3+ sample could reach 1.54% K−1 at 473 K and 1.23% K−1 at 523 K, respectively. All these indicate that this CGMS:Mn4+/Sm3+ material is a promising candidate for dual-mode high-sensitivity optical temperature sensing. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|
Full Text from ScienceDirect