Er3+/Yb3+-Doped GdVO4 Obtained by the Non-Hydrolytic Sol-Gel Route and Potential Application as Up-Conversion Thermometer

Ferreira, Maria Fernanda Lopes; Sousa, Kalil Z. R. de; Massarotto, Wagner L.; Ricci, Emiliane G.; Faria, Emerson H. de; Ciuffi, Kátia J.; Šević, D.; Rocha, Lucas A.; Nassar, Eduardo J.

doi:10.21577/0103-5053.20200189

Cited by 2 publications

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“…in agreement with the literature. 10,23 The systems presented linearity between 298 and 350 K, indicating that they respond to alterations in temperature in this range.…”

Section: 2photoluminescencementioning

confidence: 92%

“…Er 3+ /Yb 3+ samples in the powder form. The powders were thermally treated at 800 ºC for 4 h. 10 The GdVO 4 : Er 3+ /Yb 3+ samples were characterized on an X-ray diffractometer (Rigaku). Diffractograms were recorded for 2θ ranging from 5 to 80°, at 0.04 °/10 s, under 40 kV and 30 mA (1200 W).…”

Section: Methodsmentioning

confidence: 99%

“…The X-ray diffractograms of all the GdVO 4 : Er 3+ /Yb 3+ samples displayed peaks at 2θ = 18.6, 24.7, 33.3, and 49.2°, in agreement with JCPDS N. 17-260 of the gadolinium vanadate tetragonal phase, spatial group I41/amd (N. 141). 10,11 Fig. 1 illustrates the diffractograms of the GdVO 4 : Er 3+ /Yb 3+ samples doped with different Yb 3+ ion concentrations, as shown in Table 1.…”

Section: 1x-ray Diffractionmentioning

confidence: 99%

“…The GdVO 4 : Er 3+ /Yb 3+ samples containing Er 3+ /Yb 3+ molar ratios of 1:1 and 1:4 presented better linear adjustment, which could indicate that lack of or high Yb 3+ concentrations in uenced energy up-conversion. Figures10a, b, c, and d present the mathematical adjustments for FIR as a function of laser power.FIR as a function of temperature can be theoretically calculated by considering the initial temperature of 298 K (room temperature), as described by Ferreira et al (2020) 10. Figs.11a, b, c, and dpresent FIR as a function of temperature calculated for the different GdVO 4 : Er 3+ /Yb 3+ samples.Linear adjustment gave R 2 values of 0.99035, 0.99478, 0.98876, and 0.99091 for the GdVO 4 : Er 3+ /Yb 3+…”

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confidence: 95%

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Influence of Yb3+ ION Percentage on the Emission of Er3+ ION Doped Into GdVO4 Matrix

Ferreira

Faria

Pontes

et al. 2023

Preprint

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In this study the non-hydrolytic sol gel methodology was used to synthesized gadolinium vanadate particles doped with different molar ratios of the Er3+ and Yb3+ ions. The sol gel synthesis, lanthanide ion chlorides and vanadium alkoxide were used as precursors. The resulting powders were treated at 800 oC and characterized by X-ray diffraction and photoluminescence properties. The X-ray diffractogram displayed peaks attributed to the gadolinium vanadate matrix. Photoluminescence helped to evaluate the Fluorescence Intensity Ratio (FIR), parameter for understanding the nanothermometer property. The FIR of the GdVO4: Er3+/Yb3+ samples containing different molar ratios of the Er3+ and Yb3+ ions increased as a function of laser power, which indicated that the local temperature increased. The excitation spectra obtained at fixed wavelengths of 525 and 555 nm displayed bands at 322, 379, and 489 nm, ascribed to the charge transfer band and Er3+ ion levels. Upon excitation at 322 nm, the emission spectra in the visible region presented intense bands at 525 and 555 nm, due to Er3+ ion emission, and excitation at 322 nm, the emission in the infrared region, 980 and 1550 nm, were observed. The system is a candidate can be employed as temperature sensor.

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“…in agreement with the literature. 10,23 The systems presented linearity between 298 and 350 K, indicating that they respond to alterations in temperature in this range.…”

Section: 2photoluminescencementioning

confidence: 92%

Section: Methodsmentioning

confidence: 99%

Section: 1x-ray Diffractionmentioning

confidence: 99%

mentioning

confidence: 95%

See 2 more Smart Citations

Influence of Yb3+ ION Percentage on the Emission of Er3+ ION Doped Into GdVO4 Matrix

Ferreira

Faria

Pontes

et al. 2023

Preprint

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Influence of Yb3+ percentage on emission of Er3+ doped into GdVO4 matrix

Ferreira,

de Faria,

Pontes

et al. 2024

Journal of Applied Physics

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In this study, we used the non-hydrolytic sol–gel methodology to synthesize gadolinium vanadate particles doped with different Er3+ and Yb3+ molar ratios. Er3+ and Yb3+ chlorides and vanadium alkoxide were used as precursors during the sol–gel synthesis. The resulting powders were treated at 800 °C and characterized by x-ray diffraction and photoluminescence. The x-ray diffractogram displayed peaks attributed to the gadolinium vanadate matrix. Photoluminescence helped to evaluate the Fluorescence Intensity Ratio (FIR), which is important for understanding the nanothermometer property. The FIR of the GdVO4:Er3+/Yb3+ samples containing different Er3+ and Yb3+ molar ratios increased as a function of the laser power, which indicated that the local temperature increased. The excitation spectra obtained at fixed wavelengths of 525 and 555 nm displayed bands at 322, 379, and 489 nm, ascribed to the charge transfer band and Er3+ levels. Upon excitation at 321 nm, the emission spectra in the visible region presented intense bands at 525 and 555 nm, due to Er3+ emission, and excitation at 321 nm led to emission in the infrared region, 980 and 1550 nm. In conclusion, the synthesized system can be employed as a temperature sensor.

show abstract

Er3+/Yb3+-Doped GdVO4 Obtained by the Non-Hydrolytic Sol-Gel Route and Potential Application as Up-Conversion Thermometer

Cited by 2 publications

References 0 publications

Influence of Yb3+ ION Percentage on the Emission of Er3+ ION Doped Into GdVO4 Matrix

Influence of Yb3+ ION Percentage on the Emission of Er3+ ION Doped Into GdVO4 Matrix

Influence of Yb3+ percentage on emission of Er3+ doped into GdVO4 matrix

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