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Correction Due to Nonthermally Coupled Emission Bands and Its Implications on the Performance of Y2O3:Yb3+ /Er3+ Single-Particle Thermometers
The Journal of Physical Chemistry C ( IF 3.3 ) Pub Date : 2023-05-16 , DOI: 10.1021/acs.jpcc.3c00522
Allison R. Pessoa 1 , Jefferson A. O. Galindo 1 , Luiz F. dos Santos 2 , Rogéria R. Gonçalves 2 , Stefan A. Maier 3, 4, 5 , Leonardo de S. Menezes 1, 5, 6 , Anderson M. Amaral 1
The Journal of Physical Chemistry C ( IF 3.3 ) Pub Date : 2023-05-16 , DOI: 10.1021/acs.jpcc.3c00522
Allison R. Pessoa 1 , Jefferson A. O. Galindo 1 , Luiz F. dos Santos 2 , Rogéria R. Gonçalves 2 , Stefan A. Maier 3, 4, 5 , Leonardo de S. Menezes 1, 5, 6 , Anderson M. Amaral 1
Affiliation
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Lanthanide-doped single dielectric nanoparticles have been exploited toward the realization of temperature sensing in the nanoscale with high spatial, temporal, and thermal resolution. However, due to the relatively small number of emitters when compared with suspensions or powders, the luminescence readouts in individual nanocrystals usually require higher excitation power densities to keep an acceptable signal-to-noise ratio. Since in numerous cases these thermometers work by exploiting upconversion excitation pathways, higher excitation powers can lead to higher-order photon emissions that can overlap with the luminescent bands used to perform the temperature measurements. This work shows that the performance and the characterization of ∼400 nm Y2O3: Yb3+/Er3+ single-particle thermometers vary depending on the excitation irradiance if higher-order spectrally overlapping bands are not properly taken into account. We apply a recently developed method to separate these bands based on their different power-law, without the need for multiple wavelength excitation, resulting in a correction procedure that reduces the temperature readout uncertainty from 0.6 to 0.3 K in the specific case of the thermometer investigated in this work. Additionally, power-excitation-related thermal artifacts on the order of 10 °C were detected and corrected with the presented method.
中文翻译：
非热耦合发射带校正及其对 Y2O3:Yb3+ /Er3+ 单粒子温度计性能的影响
镧系元素掺杂的单介电纳米粒子已被用于实现具有高空间、时间和热分辨率的纳米级温度传感。然而，由于与悬浮液或粉末相比发射器数量相对较少，因此单个纳米晶体中的发光读数通常需要更高的激发功率密度才能保持可接受的信噪比。由于在许多情况下，这些温度计通过利用上转换激发路径来工作，因此更高的激发功率会导致更高阶的光子发射，这些光子发射可能与用于执行温度测量的发光带重叠。这项工作表明，~400 nm Y 2 O 3 : Yb 3+的性能和表征如果没有适当考虑高阶光谱重叠带，/Er 3+单粒子温度计会根据激发辐照度而变化。我们应用最近开发的方法根据不同的幂律分离这些波段，无需多波长激发，从而产生一个校正程序，在所研究的温度计的特定情况下，将温度读数的不确定性从 0.6 降低到 0.3 K在这项工作中。此外，使用所提出的方法检测并校正了 10 °C 数量级的与功率激励相关的热伪影。
更新日期：2023-05-16
中文翻译：
非热耦合发射带校正及其对 Y2O3:Yb3+ /Er3+ 单粒子温度计性能的影响
镧系元素掺杂的单介电纳米粒子已被用于实现具有高空间、时间和热分辨率的纳米级温度传感。然而，由于与悬浮液或粉末相比发射器数量相对较少，因此单个纳米晶体中的发光读数通常需要更高的激发功率密度才能保持可接受的信噪比。由于在许多情况下，这些温度计通过利用上转换激发路径来工作，因此更高的激发功率会导致更高阶的光子发射，这些光子发射可能与用于执行温度测量的发光带重叠。这项工作表明，~400 nm Y 2 O 3 : Yb 3+的性能和表征如果没有适当考虑高阶光谱重叠带，/Er 3+单粒子温度计会根据激发辐照度而变化。我们应用最近开发的方法根据不同的幂律分离这些波段，无需多波长激发，从而产生一个校正程序，在所研究的温度计的特定情况下，将温度读数的不确定性从 0.6 降低到 0.3 K在这项工作中。此外，使用所提出的方法检测并校正了 10 °C 数量级的与功率激励相关的热伪影。
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