Bright upconversion luminescence performance of Yb3+/Tm3+/Gd3+/Er3+ doped AWO4 (A=Sr or Ca) phosphor for optical temperature sensor

Zhang, Yuhong; Guo, Yibin; Zheng, Xingke; Wang, Pengcheng; Liu, Huan

doi:10.1016/j.physb.2022.414467

Cited by 9 publications

(3 citation statements)

References 45 publications

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“…Rare earth (RE) ions co-doped upconversion (UC) materials have the ability to convert infrared light into visible light, making them attractive for many applications, such as solid-state lasers [1], waveguide amplifiers [2], display devices [3], solar cells [4], biological imaging [5], biological sensing [6], detectors [7], and temperature sensors [8]. To obtain an efficient UC process, it is necessary to use a host matrix with low phonon energy and an optimized co-dopant concentration to avoid non-radiative transitions [9,10].…”

Section: Introductionmentioning

confidence: 99%

Efficient green upconversion emission in transparent Teo2-Geo2 glass-ceramic obtained by billet extrusion

Leśniak,

Jiménez,

Starzyk

et al. 2024

Metrology and Measurement Systems

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Transparent Yb3+/Er3+glass-ceramic was successfully obtained by the extrusion method. The extrusion of oxyfluoride tellurite-germanate glass co-doped with Yb3+and Er3+ions at 520°C resulted in the formation of Ba0:75Er0:25F2:25 nanocrystals, leading to an increase in the upconversion (UC) emission intensity of 35 times in glass-ceramic with respect to the glass. The glass to glass-ceramic transition was confirmed by X-ray diffraction (XRD) and Transmission electron microscope (TEM). Also, the structural changes that occurred during crystallization were assessed using Fourier-transform infrared (FTIR) spectroscopy. Furthermore, the pump power and temperature UC emission dependence of glass and glass-ceramic under 976 nm laser excitation were investigated in detail. The assessments showed that i) two-phonons are involved in the UC process and ii) the temperature has a significant influence over it. The Yb3+/Er3+ codoped glass-ceramic shows relatively high Sa and Sr values in a wide temperature range from 300 to 573 K, presenting the maximal Sa value of 3:50 x 10–3 at 573 K and the maximal Sr value of 6:30 x 10–3at 364 K. These results suggest that the glass-ceramic is a good candidate for optical applications such as luminescent thermometry.

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Section: Introductionmentioning

confidence: 99%

Efficient green upconversion emission in transparent Teo2-Geo2 glass-ceramic obtained by billet extrusion

Leśniak,

Jiménez,

Starzyk

et al. 2024

Metrology and Measurement Systems

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“…In previous studies, tungstate oxide with a tetragonal structure of scheelite was a very important matrix material. Due to its good physical and chemical stability, a large number of researchers have studied its upconversion, lighting, and temperature sensitivity [6][7][8][9][10]. Under high hydrostatic pressure, scheelite with a tetragonal structure undergoes structural phase transition, which has been extensively discussed in reference [11].…”

Section: Introductionmentioning

confidence: 99%

Computational and experimental investigations on structural, electronic and optical properties of scheelite compounds

Zheng,

Du,

et al. 2024

Phys. Scr.

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Oxide of tungstate has consistently been pursued for use in optoelectronic applications. This study details the synthesis of AWO4 (A=Ba, Sr and Ca) using a high-temperature solid-state method. Additionally, theoretical calculations highlight its electronic structure, density of states, photoelectric properties, and vibrational modes. The X-ray diffraction of AWO4 (A=Ba, Sr and Ca) was meticulously introduced by the utilization of Rietveld for refinement. The refined lattice parameters substantially verified AWO4 (A=Ba, Sr and Ca) as a tetragonal system of scheelite with the spatial group of I41/a, and demonstrated significant alteration with the discrepancy in the radius of alkaline earth metal (A-site) ions. The electronic configuration and optical attributes of AWO4 (A=Ba, Sr and Ca) possessing scheelite-like structure were explored using density functional theory (DFT) based computational techniques. The theoretical blueprint was derived by optimizing the structure based on defects. The postulated optical bandgap energy confirms the occurrence of direct electronic transitions at Brillouin region G points. Calculations suggested the direct band gaps of BaWO4, SrWO4, and CaWO4 at 4.385, 3.123 and 3.813 eV. This was attributed to the energy levels produced by O and A-site atoms in the valence band, and W and O atoms in the conduction band. An examination of the polarization effect and uneven electronic charge distribution between [CaO8]6- and [WO4]2- clusters brought about by structural defects in AWO4 (A=Ba, Sr and Ca) was performed. Moreover, advanced investigations have been conducted on the elastic constants and mechanical durability of AWO4 (A=Ba, Sr and Ca). This research extensively calculated the elastic moduli of various matrices utilizing DFT. The critical Pugh's ratio value was found to be>1.75, it indicated that AWO4 (A=Ba, Sr and Ca) has significant potential as a resilient material.

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“…By contrast, as an essential member of oxide family, tungstates AWO 4 (A = Ca, Sr, and Ba) with the scheelite crystal structure present remarkable optical properties along with excellent thermal and chemical stability, which makes them potential candidates for UC studies. [12][13][14][15][16][17][18][19] For instance, bright green UC emission is successfully realized in Yb 3+ and Er 3+ codoped BaWO 4 phosphors. 20 Nevertheless, the UC performance of BaWO 4 :Yb 3+ /Er 3+ still needs to be modified and improved to satisfy more application demands.…”

Section: Introductionmentioning

confidence: 99%

Upconversion enhancement through engineering the local crystal field in Yb³⁺ and Er³⁺ codoped BaWO₄ along with excellent temperature sensing performance

Xiang,

Liu,

Yang

et al. 2023

J. Mater. Chem. C

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Bright upconversion luminescence performance of Yb3+/Tm3+/Gd3+/Er3+ doped AWO4 (A=Sr or Ca) phosphor for optical temperature sensor

Cited by 9 publications

References 45 publications

Efficient green upconversion emission in transparent Teo2-Geo2 glass-ceramic obtained by billet extrusion

Efficient green upconversion emission in transparent Teo2-Geo2 glass-ceramic obtained by billet extrusion

Computational and experimental investigations on structural, electronic and optical properties of scheelite compounds

Upconversion enhancement through engineering the local crystal field in Yb³⁺ and Er³⁺ codoped BaWO₄ along with excellent temperature sensing performance

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Bright upconversion luminescence performance of Yb3+/Tm3+/Gd3+/Er3+ doped AWO4 (A=Sr or Ca) phosphor for optical temperature sensor

Cited by 9 publications

References 45 publications

Efficient green upconversion emission in transparent Teo2-Geo2 glass-ceramic obtained by billet extrusion

Efficient green upconversion emission in transparent Teo2-Geo2 glass-ceramic obtained by billet extrusion

Computational and experimental investigations on structural, electronic and optical properties of scheelite compounds

Upconversion enhancement through engineering the local crystal field in Yb3+ and Er3+ codoped BaWO4 along with excellent temperature sensing performance

Contact Info

Product

Resources

About

Upconversion enhancement through engineering the local crystal field in Yb³⁺ and Er³⁺ codoped BaWO₄ along with excellent temperature sensing performance