CaGdF5 based heterogeneous core@shell upconversion nanoparticles for sensitive temperature measurement

doi:10.1039/d3ra00716b

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	CaGdF5 based heterogeneous core@shell upconversion nanoparticles for sensitive temperature measurement
	X. Y. Xie, W. Wang, H. R. Chen, R. Yang, H. Wu, D. C. Gan, B. Li, X. G. Kong, Q. Q. Li and Y. L. Chang
	2023
发表期刊	Rsc Advances
卷号	13 期号:13 页码:8535-8539
摘要	Lanthanide-doped upconversion nanoparticles (UCNPs) have attracted great attention in temperature sensing because of their widespread thermal quenching effect (TQE), a phenomenon in which luminescence intensity decreases as the temperature increases. However, enhancing the TQE of activated ions without changing the dopants or the host is still challenging. Herein, Yb3+ and Er3+ codoped UCNPs in a cubic CaGdF5 host were synthesized by a coprecipitation method for optical temperature sensing. Compared with the homogeneous shell (CaGdF5), those heterogeneous (CaF2) shelled UCNPs exhibited stronger upconversion luminescence (UCL) due to the significantly reduced multiphonon nonradiative relaxation. Further, we investigated the effects of homogeneous and heterogeneous shells on TQE. The relationship between the intensity ratio of the green emission bands of Er3+ ions (H-2(11/2) -> I-4(15/2) and S-4(3/2) -> I-4(15/2)) and temperature are obtained for these two core@shell UCNPs. The results demonstrated that the UCNPs with CaF2 shells are more sensitive to temperature in the 200-300 K. The maximum thermal sensitivity of CaGdF5:Yb,Er@CaF2 could reach 2.2% K-1 at 200 K. These results indicate that the heterogeneous core@shell UCNPs are promising for use as optical temperature sensors.
DOI	10.1039/d3ra00716b
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收录类别	sci ; ei
语种	英语
引用统计
文献类型	期刊论文
条目标识符	http://ir.ciomp.ac.cn/handle/181722/68048
专题	中国科学院长春光学精密机械与物理研究所
推荐引用方式 GB/T 7714	X. Y. Xie, W. Wang, H. R. Chen, R. Yang, H. Wu, D. C. Gan, B. Li, X. G. Kong, Q. Q. Li and Y. L. Chang. CaGdF5 based heterogeneous core@shell upconversion nanoparticles for sensitive temperature measurement[J]. Rsc Advances,2023,13(13):8535-8539.
APA	X. Y. Xie, W. Wang, H. R. Chen, R. Yang, H. Wu, D. C. Gan, B. Li, X. G. Kong, Q. Q. Li and Y. L. Chang.(2023).CaGdF5 based heterogeneous core@shell upconversion nanoparticles for sensitive temperature measurement.Rsc Advances,13(13),8535-8539.
MLA	X. Y. Xie, W. Wang, H. R. Chen, R. Yang, H. Wu, D. C. Gan, B. Li, X. G. Kong, Q. Q. Li and Y. L. Chang."CaGdF5 based heterogeneous core@shell upconversion nanoparticles for sensitive temperature measurement".Rsc Advances 13.13(2023):8535-8539.

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