Optical temperature sensing behavior of Er3+/Yb3+/Tm3+:Y2O3 nanoparticles based on thermally and non-thermally coupled levels
| Autor: | Shiqing Xu, Guangrun Chen, Shilong Zhao, Huanping Wang, Feifei Huang, Ruoshan Lei |
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| Rok vydání: | 2018 |
| Předmět: |
Diffraction
Materials science Scanning electron microscope business.industry Doping Nanoparticle 02 engineering and technology Atmospheric temperature range 010402 general chemistry 021001 nanoscience & nanotechnology 01 natural sciences Atomic and Molecular Physics and Optics Photon upconversion 0104 chemical sciences Electronic Optical and Magnetic Materials Optics Phase (matter) Electrical and Electronic Engineering Physical and Theoretical Chemistry 0210 nano-technology business Excitation |
| Zdroj: | Optics Communications. 407:57-62 |
| ISSN: | 0030-4018 |
| DOI: | 10.1016/j.optcom.2017.09.014 |
| Popis: | Er 3+ /Yb 3+ /Tm 3+ triply doped Y 2 O 3 nanoparticles have been synthesized by solute combustion method. X-ray diffraction (XRD) and scanning electron microscopy (SEM) demonstrate that the prepared particles are cubic Y 2 O 3 phase with the average size of ∼ 49 nm. The blue (Tm 3+ : 1 G 4 → 3 H 6 ), green (Er 3+ : 2 H 11∕2 , 4 S 3∕2 → 4 I 15∕2 ) and red (Er 3+ : 4 F 9∕2 → 4 I 15∕2 ) upconversion (UC) emissions are observed upon a 980 nm excitation. Applying the fluorescence intensity ratio (FIR) technique, the optical temperature sensing behaviors are studied based on thermally coupled levels ( 2 H 11∕2 and 4 S 3∕2 of Er 3+ ) and non-thermally coupled levels ( 1 G 4(b) (Tm 3+ ) and 2 H 11∕2 (Er 3+ )), respectively. The results show that the absolute sensing sensitivity is much higher in the entire experimental temperature range, when the non-thermally coupled levels with different temperature dependences ( 1 G 4(b) (Tm 3+ ) and 2 H 11∕2 (Er 3+ )) are selected as the thermometric index. The maximum absolute sensitivity is found to be as high as ∼ 1640 × 10 −4 K −1 at 573 K. This demonstrates that an optical temperature sensor with high performance can be designed based on the Er 3+ /Yb 3+ /Tm 3+ :Y 2 O 3 nanoparticles. |
| Databáze: | OpenAIRE |
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