Size dependent sensitivity of Yb3+,Er3+ up-converting luminescent nano-thermometers

2017 ◽  
Vol 5 (31) ◽  
pp. 7890-7897 ◽  
Author(s):  
L. Marciniak ◽  
K. Prorok ◽  
A. Bednarkiewicz
Keyword(s):  
Luminescence Intensity ◽  
Electronic Transition ◽  
Intensity Ratio ◽  
Temperature Sensing ◽  
Contact Temperature ◽  
Size Dependent ◽  
Co Doped

The non-contact temperature sensing using the luminescence intensity ratio (LIR) between 2H11/2 → 4I15/2 and 4S3/2 → 4I15/2 electronic transition in upconverting Yb3+ and Er3+ co-doped nanocrystals has been known for two decades.

scholarly journals Up-Converting Luminescence and Temperature Sensing of Er3+/Tm3+/Yb3+ Co-Doped NaYF4 Phosphors Operating in Visible and the First Biological Window Range

Nanomaterials ◽  
2021 ◽  
Vol 11 (10) ◽  
pp. 2660
Author(s):  
Jingyun Li ◽  
Yuxiao Wang ◽  
Xueru Zhang ◽  
Liang Li ◽  
Haoyue Hao
Keyword(s):  
Energy Level ◽  
Luminescence Intensity ◽  
Industrial Production ◽  
Intensity Ratio ◽  
Temperature Sensors ◽  
Temperature Sensing ◽  
Optical Thermometry ◽  
Potential Applications ◽  
Sensing Sensitivity ◽  
Co Doped

Accurate and reliable non-contact temperature sensors are imperative for industrial production and scientific research. Here, Er3+/Tm3+/Yb3+ co-doped NaYF4 phosphors were studied as an optical thermometry material. The typical hydrothermal method was used to synthesize hexagonal Er3+/Tm3+/Yb3+ co-doped NaYF4 phosphors and the morphology was approximately rod-like. The up-conversion emissions of the samples were located at 475, 520, 550, 650, 692 and 800 nm. Thermo-responsive emissions from the samples were monitored to evaluate the relative sensing sensitivity. The thermal coupled energy level- and non-thermal coupled energy level-based luminescence intensity ratio thermometry of the sample demonstrated that these two methods can be used to test temperature. Two green emissions (520 and 550 nm), radiated from 2H11/2/4S3/2 levels, were monitored, and the maximum relative sensing sensitivities reached to 0.013 K−1 at 297 K. The emissions located in the first biological window (650, 692 and 800 nm) were monitored and the maximum relative sensing sensitivities reached to 0.027 (R692/650) and 0.028 K−1 (R692/800) at 297 K, respectively. These results indicate that Er3+/Tm3+/Yb3+ co-doped NaYF4 phosphors have potential applications for temperature determination in the visible and the first biological window ranges.

Enhanced up-conversion and temperature-sensing behaviour of Er3+ and Yb3+ co-doped Y2Ti2O7 by incorporation of Li+ ions

2014 ◽  
Vol 16 (41) ◽  
pp. 22665-22676 ◽  
Author(s):  
B. P. Singh ◽  
A. K. Parchur ◽  
R. S. Ningthoujam ◽  
P. V. Ramakrishna ◽  
S. Singh ◽  
...  
Keyword(s):  
Fluorescence Intensity ◽  
Intensity Ratio ◽  
Graphical Representation ◽  
Temperature Sensing ◽  
Fluorescence Intensity Ratio ◽  
Sensing Applications ◽  
Co Doped

Graphical representation of Li+ co-doped Y2Ti2O7:Er3+/Yb3+ phosphor showing up-conversion of green and red bands and probing the fluorescence intensity ratio (FIR) for temperature sensing applications.

A portable all-fiber thermometer based on the fluorescence intensity ratio (FIR) technique in rare earth doped TeO2–WO3–La2O3–Na2O glass

2018 ◽  
Vol 6 (26) ◽  
pp. 7063-7069 ◽  
Author(s):  
Yuyuan Tu ◽  
Shilong Zhao ◽  
Dongyang He ◽  
Ting Wu ◽  
Hui Zhang ◽  
...  
Keyword(s):  
Rare Earth ◽  
Glass Fiber ◽  
Fluorescence Intensity ◽  
Intensity Ratio ◽  
Temperature Sensing ◽  
Fluorescence Intensity Ratio ◽  
Fir Technique ◽  
Rare Earth Doped ◽  
Co Doped ◽  
Sensing Performance

A portable all-fiber thermometer based on the fluorescence intensity ratio technique in Er3+/Yb3+ co-doped TeO2–WO3–La2O3–Na2O (TWLN) glass fiber was designed and its temperature sensing performance was determined.

Bi3+ and Eu3+ co-doped LaB3O6 phosphors for optical temperature sensing based on fluorescence intensity ratio

Optik ◽  
2021 ◽  
pp. 167459
Author(s):  
Xiao Wu ◽  
Lulu Lou ◽  
Haicheng Feng ◽  
Guolin Lv ◽  
Qiang Wang ◽  
...  
Keyword(s):  
Fluorescence Intensity ◽  
Intensity Ratio ◽  
Temperature Sensing ◽  
Fluorescence Intensity Ratio ◽  
Co Doped

Temperature sensing based on the 4F7/2/4S3/2−4I15/2 upconversion luminescence intensity ratio in NaYF4:Er3+/Yb3+ nanocrystals

2019 ◽  
Vol 206 ◽  
pp. 335-341 ◽  
Author(s):  
Leipeng Li ◽  
Feng Qin ◽  
Yuan Zhou ◽  
Yangdong Zheng ◽  
Hua Zhao ◽  
...  
Keyword(s):  
Luminescence Intensity ◽  
Intensity Ratio ◽  
Upconversion Luminescence ◽  
Temperature Sensing

scholarly journals Size dependent optical temperature sensing properties of Y2O3: Tb3+, Eu3+ nanophosphors

RSC Advances ◽  
2019 ◽  
Vol 9 (5) ◽  
pp. 2581-2590 ◽  
Author(s):  
Lixin Peng ◽  
Qingyu Meng ◽  
Wenjun Sun
Keyword(s):  
Size Dependence ◽  
Temperature Sensing ◽  
Precipitation Method ◽  
Homogeneous Precipitation ◽  
Sensing Properties ◽  
Size Dependent ◽  
Homogeneous Precipitation Method ◽  
Co Doped

Using urea as a precipitation agent, Tb3+, Eu3+ co-doped Y2O3 nanophosphors were synthesized by a homogeneous precipitation method. The size dependence-optical temperature sensing properties of nanophosphors have been studied.

The impact of 2H  → 4I emission from Er3+ ions on ratiometric optical temperature sensing with Yb3+/Er3+ co-doped upconversion materials

2021 ◽  
Vol 236 ◽  
pp. 118006
Author(s):  
Xiaojing Xia ◽  
Azzurra Volpi ◽  
Joo Yeon D. Roh ◽  
Michael C. De Siena ◽  
Daniel R. Gamelin ◽  
...  
Keyword(s):  
Temperature Sensing ◽  
The Impact ◽  
Co Doped
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