L3- Luminescent Lanthanide Lab, Department of Chemistry, Ghent University, Krijgslaan 281-S3, B-9000 Ghent, Belgium.
Nanoscale. 2019 Jan 17;11(3):833-837. doi: 10.1039/c8nr08348g.
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.
在这里，我们报道了掺铒、掺镱氟化镧纳米粒子的超高热感性能，其中利用了铒离子到镱离子的能量转移。此外，具有镨离子到镱离子能量转移的掺镨、掺镱氟化镧纳米粒子也在相同的温度范围内表现出温度传感，但性能较低。所研究的掺铒、掺镱氟化镧纳米粒子在近红外（NIR）区域显示出非常高的相对灵敏度 Sr，高达 6.6092% K-1（在 15 K 时），在低温（15-105 K）温度范围内开辟了一个全新的测温系统，适用于极低温度范围内的先进应用。迄今为止，关于近红外低温传感器的报道非常稀少。
