Investigation into the temperature sensing behavior of Yb³⁺ sensitized Er³⁺ doped Y₂O₃, YAG and LaAlO₃ phosphors

Abstract

The sensitivities (S) of Y2O3 (YAG/LaAlO3):Yb3+/Er3+ phosphors increased with increasing average bond covalency and the calculated values were basically in good agreement with our experimental results.

Energy Back Transfer Induced Color Controllable Upconversion Emissions in La2MoO6:Er3+/Yb3+ Nanocrystals for Versatile Applications

“…Wei et al revealed that the maximum sensor sensitivity of Bi 4 Ti 3 O 12 :Er 3+ nanoparticles was around 0.0043 K −1 in the operating temperature range of 115–490 K . Kumar and co‐workers demonstrated that the CaMoO 4 :Er 3+ /Yb 3+ upconverting nanoparticles were suitable for high‐temperature measurement with a maximum sensor sensitivity of around 0.00532 K −1 . Clearly, the sensor sensitivities of the previous developed optical temperature sensors are still not high enough for practical applications.…”

Wide‐range thermometry based on green up‐conversion luminescence of K3LuF6:Yb3+/Er3+ bulk oxyfluoride glass ceramics

“…Fluorescence‐based thermometers have garnered lots of attention in view of their unique advantages, such as good accuracy, high sensitivity, and fast response . Recently, a large number of interests have been sparked on optical thermometry based on fluorescence intensity ratio (FIR) method derived from thermally coupled energy levels (TCEL) .…”

“…Recently, a large number of interests have been sparked on optical thermometry based on fluorescence intensity ratio (FIR) method derived from thermally coupled energy levels (TCEL) . Compared to other fluorescence‐based thermometry (such as fluorescence intensity, fluorescence lifetime, and peak position), optical thermometry using FIR method with better antijamming capability and improved sensitivity is considered as a promising approach for optical thermometers . Operating as “non‐contact”, such optical thermometry is particularly favorable for the temperature measurement in electromagnetically and thermal harsh environment, such as building fire detections, biological imaging systems, and micro/nanoscale temperature measurement …”

“…Fluorescence-based thermometers have garnered lots of attention in view of their unique advantages, such as good accuracy, high sensitivity, and fast response. [1][2][3][4][5][6] Recently, a large number of interests have been sparked on optical thermometry based on fluorescence intensity ratio (FIR) method derived from thermally coupled energy levels (TCEL). [7][8][9] Compared to other fluorescence-based thermometry (such as fluorescence intensity, fluorescence lifetime, and peak position), optical thermometry using FIR method with better antijamming capability and improved sensitivity is considered as a promising approach for optical thermometers.…”

Improving Optical Temperature Sensing Performance of Er3+ Doped Y2O3 Microtubes via Co-doping and Controlling Excitation Power

“…Compared with the fluorides, Y 2 O 3 has the advantages of a high melting point, wide bandgap, high solubility between Y 3+ and Er 3+ , and good transparency in ultraviolet and infrared range 27 . Based on the green emissions from thermally coupled energy levels of 2 H 11/2 and 4 S 3/2 , the optical temperature sensing was studied in Er 3+ -Yb 3+ co-doped Y 2 O 3 bulks and nano-materials 27–32 . However, the aforementioned works have not dealt with excitation powers dependent optical temperature sensitivity, and lack to explore how to improve the optical temperature behaviors.…”