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Issue 3, 2019
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Er3+-to-Yb3+ and Pr3+-to-Yb3+ energy transfer for highly efficient near-infrared cryogenic optical temperature sensing

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Abstract

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 Sr 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.

Graphical abstract: Er3+-to-Yb3+ and Pr3+-to-Yb3+ energy transfer for highly efficient near-infrared cryogenic optical temperature sensing

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Article information


Submitted
15 Oct 2018
Accepted
10 Dec 2018
First published
10 Dec 2018

Nanoscale, 2019,11, 833-837
Article type
Communication

Er3+-to-Yb3+ and Pr3+-to-Yb3+ energy transfer for highly efficient near-infrared cryogenic optical temperature sensing

A. M. Kaczmarek, M. K. Kaczmarek and R. Van Deun, Nanoscale, 2019, 11, 833
DOI: 10.1039/C8NR08348G

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