Study on optical temperature sensing properties of β-NaYF4:Tm3+/Yb3+ nanoparticles
- Department of Physics, Dalian Maritime University, Dalian, Liaoning 116026 (China)
- College of Life Science, Dalian Nationalities University, Dalian, Liaoning 116600 (China)
Highlights: • The sensitivity is higher than previous reported other rare-earth doped materials. • The maximum sensitivity of the samples is 2103.67/T{sup 2}. • The FIR is linear with excitation current (1.2–2.0 A). - Abstract: As an optical temperature sensor, rare earth ions (Tm{sup 3+}/Yb{sup 3+}) co-doped β-NaYF{sub 4} upconversion nanoparticles (UCNPs) were synthesized via a thermal decomposition method. Fluorescence intensity ratio (FIR) between the 700 nm ({sup 3}F{sub 2,3}→{sup 3}H{sub 6}) and 800 nm ({sup 3}H{sub 4}→{sup 3}H{sub 6}) corresponding to the emission spectra of Tm{sup 3+} was studied in the temperature range of 300–498 K under 980 nm excitation as a function of optical thermometry. It was found that the temperature sensing sensitivity of Tm{sup 3+}/Yb{sup 3+} co-doped β-NaYF{sub 4} UCNPs was higher than that of other rare-earth doped materials which were reported previously by using FIR technique in terms of sensitivity. β-NaYF{sub 4}:Tm{sup 3+}/Yb{sup 3+} UCNPs were promising to be a temperature sensor with the high sensitivity and resolution, especially with the superior property of well separated emission bands (700 nm and 800 nm).
- OSTI ID:
- 22805245
- Journal Information:
- Materials Research Bulletin, Journal Name: Materials Research Bulletin Vol. 106; ISSN MRBUAC; ISSN 0025-5408
- Country of Publication:
- United States
- Language:
- English
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