A three-mode self-referenced optical thermometry based on up-conversion luminescence of Ca2MgWO6:Er3+,Yb3+ phosphors

Jiang, Ya Dong; Ye, Tong; Chen, SunYueZi; Zhang, WenNa; Hu, Fangfang; Wei, Rongfei; Guo, Hai

doi:10.1016/j.cej.2020.127470

Cited by 262 publications

(147 citation statements)

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“…The thermometric properties of luminescence materials, including the excited state lifetime (Jiang et al, 2021), emission shift (Kolesnikov et al, 2019) and luminescence intensity ratio (LIR) (Runowski et al, 2020;Galvão et al, 2021a), have been extensively studied for their non-contact operating mode, fast measurement, and high precision and resolution. Compared to other optical thermometry methods, the LIR technique can avoid the influences of spectral losses and fluctuation of excitation sources, so it is highly reliable, improves measurement accuracy, and is easy to operate (Brites et al, 2016).…”

Section: Introductionmentioning

confidence: 99%

Single Er3+, Yb3+: KGd3F10 Nanoparticles for Nanothermometry

et al. 2021

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Among several optical non-contact thermometry methods, luminescence thermometry is the most versatile approach. Lanthanide-based luminescence nanothermometers may exploit not only downshifting, but also upconversion (UC) mechanisms. UC-based nanothermometers are interesting for biological applications: they efficiently convert near-infrared radiation to visible light, allowing local temperatures to be determined through spectroscopic investigation. Here, we have synthesized highly crystalline Er3+, Yb3+ co-doped upconverting KGd3F10 nanoparticles (NPs) by the EDTA-assisted hydrothermal method. We characterized the structure and morphology of the obtained NPs by transmission electron microscopy, X-ray diffraction, Raman spectroscopy, and dynamic light scattering. Nonlinear spectroscopic studies with the Er3+, Yb3+: KGd3F10 powder showed intense green and red emissions under excitation at 980 and 1,550 nm. Two- and three-photon processes were attributed to the UC mechanisms under excitation at 980 and 1,550 nm. Strong NIR emission centered at 1,530 nm occurred under low 980-nm power densities. Single NPs presented strong green and red emissions under continuous wave excitation at 975.5 nm, so we evaluated their use as primary nanothermometers by employing the Luminescence Intensity Ratio technique. We determined the temperature felt by the dried NPs by integrating the intensity ratio between the thermally coupled 2H11/2→4I15/2 and 4S3/2→4I15/2 levels of Er3+ ions in the colloidal phase and at the single NP level. The best thermal sensitivity of a single Er3+, Yb3+: KGd3F10 NP was 1.17% at the single NP level for the dry state at 300 K, indicating potential application of this material as accurate nanothermometer in the thermal range of biological interest. To the best of our knowledge, this is the first promising thermometry based on single KGd3F10 particles, with potential use as biomarkers in the NIR-II region.

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Section: Introductionmentioning

confidence: 99%

Single Er3+, Yb3+: KGd3F10 Nanoparticles for Nanothermometry

et al. 2021

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“…Ca 2 MgWO 6 (CMW) is a low-cost material with high chemical and physical stability, which can be synthesized by a rather simple synthesis pathway and which can be doped with transition metal ions as soon as with rare earth metal ions [10]. In the past, several phosphors with CMW host have been reported, such as CMW:Eu 3+ [11], CMW:Bi 3+ [12], CMW:Bi 3+ ,Sm 3+ [13], CMW:Bi 3+ ,Eu 3+ [14], CMW:Er 3+ ,Yb 3+ [15], and CMW:Mn 4+ [16]. Xu et al studied CMW:Cr 3+ and CMW:Cr 3+ ,Yb 3+ .…”

Section: Introductionmentioning

confidence: 99%

Optimization of the Synthesis and Energy Transfer of Ca2MgWO6:Cr3+,Nd3+

Anselm

Jüstel

2021

Inorganics

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This work pertains to Cr3+ and Nd3+ co-activated Ca2MgWO6 phosphors synthesized by high temperature solid-state method using oxides and carbonates as raw materials. All luminescent samples according to Ca2MgWO6:Cr3+,Nd3+ include Cr3+ for the absorption of UV and visible radiation (230–800 nm) prior to energy transfer to Nd3+. As a result of the energy transfer between Cr3+ and Nd3+, we observe line emission originating from Nd3+ in the near infrared range additionally to the broad band near infrared emission from Cr3+ assigned to the spin-allowed 4T2 → 4A2 transition. The energy transfer from Cr3+ to Nd3+ is discussed via the variations of the lifetime data of Cr3+ and Nd3+. The strong absorption of Cr3+ in the ultraviolet range and the efficient energy transfer from Cr3+ to Nd3+ indicate that the herein presented material type can serve as a radiation converter for near infrared region light emitting diodes (NIR-LEDs) comprising an UV-A emitting (Al,Ga)N chip.

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“…In the past few years, UC materials have also been found to own outstanding temperature sensing properties which can afford a contactless thermometry in many special industries, such as coal mining, metal smelting, petrochemicals, biomedicine, and so on 10,11 . In particular, the fluorescence intensity ratio ( FIR ) between two thermally coupled energy levels of trivalent rare earth ions is considered to be a promising technology to provide fast and accurate optical thermometry, due to its rapid response capability, high spatial resolution, strong anti‐jamming ability, etc 12‐17 . Up to date, numerous trivalent rare earth ions are used for ratiometric thermometry, such as Er 3+ , Ho 3+ , Tm 3+ , Nd 3+ , and Eu 3+ 18‐25 .…”

Section: Introductionmentioning

confidence: 99%

“…10,11 In particular, the fluorescence intensity ratio (FIR) between two thermally coupled energy levels of trivalent rare earth ions is considered to be a promising technology to provide fast and accurate optical thermometry, due to its rapid response capability, high spatial resolution, strong anti-jamming ability, etc. [12][13][14][15][16][17] Up to date, numerous trivalent rare earth ions are used for ratiometric thermometry, such as Er 3+ , Ho 3+ , Tm 3+ , Nd 3+ , and Eu 3+ . [18][19][20][21][22][23][24][25] Among these ions, Er 3+ is the most widely used activator for temperature sensing which has been realized in an enormous variety of materials, due to the excellent thermal coupling between the green emitting levels 2 H 11/2 and 4 S 3/2 of Er 3+ as well as their strong UC intensity under the excitation of 980 nm excitation with the sensitization of Yb 3+ .…”

Section: Introductionmentioning

confidence: 99%

Multipath optical thermometry realized in CaSc₂O₄: Yb³⁺/Er³⁺ with high sensitivity and superior resolution

Xiang

Xia

et al. 2021

J Am Ceram Soc

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Design and fabrication of contactless optical thermometer with rapid and accurate performance has become a research hotspot in recent years. Herein, CaSc2O4: Yb3+/Er3+ is employed as the intermediary for temperature sensing under the excitation of 980 nm, which is proven to afford an ultra‐sensitive and high‐resolution optical thermometry in multiple ways based on the fluorescence intensity ratio (FIR) technology. The optimal thermal sensing behaviors are realized by the FIR of Er3+:2H11/2 → 4I15/2 to 4S3/2 → 4I15/2 transition, which has a relative sensitivity of 1184/T2 and a minimal resolution of 0.03 K along with a maximal absolute error of 0.96 K. Besides that, the FIR between the thermally coupled Stark sublevels of Er3+:4F9/2 manifold (FIRR) as well as that of Er3+: 4I13/2 manifold (FIRN) can also provide excellent optical thermometry. The relative sensitivity of FIRR‐based and FIRN‐based optical thermometers are calculated to be 402/T2 and 366/T2, respectively, with a same minimal resolution of 0.09 K, which possess the potential to be used for biomedicine due to the inherent advantage of their operating wavelengths located in the biological window. The results demonstrate that CaSc2O4: Yb3+/Er3+ is a promising candidate for temperature sensing with multipath, high sensitivity, and superior resolution.

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A three-mode self-referenced optical thermometry based on up-conversion luminescence of Ca2MgWO6:Er3+,Yb3+ phosphors

Cited by 262 publications

References 50 publications

Single Er3+, Yb3+: KGd3F10 Nanoparticles for Nanothermometry

Single Er3+, Yb3+: KGd3F10 Nanoparticles for Nanothermometry

Optimization of the Synthesis and Energy Transfer of Ca2MgWO6:Cr3+,Nd3+

Multipath optical thermometry realized in CaSc₂O₄: Yb³⁺/Er³⁺ with high sensitivity and superior resolution

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A three-mode self-referenced optical thermometry based on up-conversion luminescence of Ca2MgWO6:Er3+,Yb3+ phosphors

Cited by 262 publications

References 50 publications

Single Er3+, Yb3+: KGd3F10 Nanoparticles for Nanothermometry

Single Er3+, Yb3+: KGd3F10 Nanoparticles for Nanothermometry

Optimization of the Synthesis and Energy Transfer of Ca2MgWO6:Cr3+,Nd3+

Multipath optical thermometry realized in CaSc2O4: Yb3+/Er3+ with high sensitivity and superior resolution

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Multipath optical thermometry realized in CaSc₂O₄: Yb³⁺/Er³⁺ with high sensitivity and superior resolution