期刊
NANOSCALE
卷 11, 期 3, 页码 833-837出版社
ROYAL SOC CHEMISTRY
DOI: 10.1039/c8nr08348g
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- Ghent University's Special Research Fund (BOF) [BOF15/PDO/091]
Here, the very high thermal sensing capability of Er3+,Yb3+ doped LaF3 nanoparticles, where Er3+-to-Yb3+ energy transfer is used, is reported. Also Pr3+,Yb3+ doped LaF3 nanoparticles, with Pr3+-to-Yb3+ energy transfer, showed temperature sensing in the same temperature regime, but with lower performance. The investigated Er3+,Yb3+ doped LaF3 nanoparticles show a remarkably high relative sensitivity S-r of up to 6.6092% K-1 (at 15 K) in the near-infrared (NIR) region, in the cryogenic (15-105 K) temperature region opening a whole new thermometric system suitable for advanced applications in the very low temperature ranges. To date reports on NIR cryogenic sensors have been very scarce.
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