Er3+/Yb3+ codoped phosphor Ba3Y4O9 with intense red upconversion emission and optical temperature sensing behavior

Wu, Hao; Hao, Zhendong; Zhang, Liangliang; Zhang, Xia; Xiao, Yu; Pan, Guohui; Wu, Huajun; Luo, Yongshi; Zhang, Jiahua

doi:10.1039/c7tc05796b

Cited by 118 publications

(51 citation statements)

References 51 publications

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“…[ 101,102 ] However, there is no clear or systematic strategy for selecting appropriate host matrixes as luminescence thermometers with desired thermometric performance, and tremendous efforts have been devoted to figuring it out in the past few years, especially in 4 S 3/2 / 2 H 11/2 TCL‐based thermometers. [ 103–105 ] In this part, the effect of host materials on thermal sensitivity should be demonstrated using same TCLs with similar energy gaps to exclude the impact of ∆E , thus 4 S 3/2 / 2 H 11/2 TCLs of Er 3+ are mainly discussed as an illustrative example. As mentioned above, the crystal‐field Hamiltonian used for calculating Er 3+ energy level diagram could be regarded as a perturbation of the free‐Er 3+ Hamiltonian, leading to a little fluctuation of S r value and energy gap between 4 S 3/2 / 2 H 11/2 in most of host matrices.…”

Section: Influential Factors On Thermal Sensitivitymentioning

confidence: 99%

Rational Design of Ratiometric Luminescence Thermometry Based on Thermally Coupled Levels for Bioapplications

Suo

Zhao

Zhang

et al. 2020

Laser & Photonics Reviews

230

168

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Noninvasive lanthanide‐doped optical thermometers based on fluorescent intensity ratio (FIR) technique have emerged as promising noncontact tools for detecting the inaccessible objects at different scales. Currently, the theoretical and experimental investigations of various influential factors on thermal performances of luminescence thermometers have become one of the hotspots to develop highly sensitive optical thermometers. On the other hand, near‐infrared (NIR) light‐responsive nanothermometers with deep‐tissue penetration have been widely applied for subcutaneous and intracellular thermometry, which could be integrated with optical heating and imaging functions to construct all‐in‐one thermometer‐heater platforms for cancer diagnosis and therapy. In this review, the recent advances in luminescence thermometry based on the thermally coupled levels (TCLs) are elaborately introduced from fundamental aspects to possible biomedical applications, with the perspective and outlook in the emerging challenges of FIR thermometers applied in biomedical science.

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Section: Influential Factors On Thermal Sensitivitymentioning

confidence: 99%

Rational Design of Ratiometric Luminescence Thermometry Based on Thermally Coupled Levels for Bioapplications

Suo

Zhao

Zhang

et al. 2020

Laser & Photonics Reviews

230

168

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“…Two main emissions located at 525 and 545 nm are ascribed to 2 H 11/2 → 4 I 15/2 and 4 S 3/2 → 4 I 15/2 transitions of Er 3+ , respectively . Three weak peaks located at 605, 625, and 650 nm are ascribed to ( 2 D, 2 P) 3/2 → 4 G 11/2, 4 G 11/2 → 4 I 11/2 and 4 F 9/2 → 4 I 15/2 transitions of Er 3+ , respectively . Moreover, it is quite obvious that the Gd 2 (WO 4 ) 3 :Er,Yb@SiO 2 phosphors are more feasible for further research because of their higher luminescent intensity.…”

Section: Resultsmentioning

confidence: 99%

A Thermometer Based on Er‐Sensitized Phosphors Gd₂(WO₄)₃:Er,Yb@SiO₂ in Near‐Infrared and Visible Regions

Wang

Sun

Wei

et al. 2020

Physica Status Solidi (b)

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Currently, the ratiometric temperature sensing based on thermally coupled levels and nonthermally coupled levels dominates the optical thermometers. Herein, Gd2(WO4)3:Er,Yb@SiO2 phosphors are successfully synthesized by the one‐pot coprecipitation method. The themperature sensing properties based on fluorescence intensity ratio (FIR) at 808 nm excitation are investigated in detail. In the visible region, the maximum relative sensitivity (Sr) of 0.0112 K−1 based on thermally coupled energy levels of Er3+ (2H11/2 and 4S3/2) is achieved at 323 K, whereas the maximum of Sr based on nonthermally coupled energy levels of Er3+ (4I13/2) and Yb3+ (2F5/2) in the near‐infrared region is 0.0035 K−1 at the lowest temperature 303 K, indicating that the thermometer can be used in the biological temperature range. Moreover, to determine which kind of thermal sensing method is more reliable, the relative standard deviation (RSD) is calculated. In comparison, it is confirmed that temperature sensing based on thermally coupled levels is more stable.

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“…However, definitely, in this work, this pair of thermally coupled levels is hard to apply to temperature sensing because of the weak green UC emission. Actually, the thermally coupled red Stark sublevels of Er 3+ 4 F 9/2 manifold can also be employed to measure the temperature with perfect sensitivity …”

Section: Resultsmentioning

confidence: 99%

“…Actually, the thermally coupled red Stark sublevels of Er 3+ 4 F 9/2 manifold can also be employed to measure the temperature with perfect sensitivity. 30,31 Subsequently, in order to investigate the temperature sensing behavior based on the thermally coupled red Stark sublevels, the thermal evolution red UC emission spectra of CaO-Y 2 O 3 : 10% Yb 3+ /4% Er 3+ were measured and are shown in Figure 4. There are several emission peaks existing in the range of 600-700 nm, which belong to the Stark transitions of 4 F 9/2 → 4 I 15/2 transition.…”

Section: The Optical Thermometry Behaviors Of Cao-y 2 O 3 : Yb 3+ /mentioning

confidence: 99%

Multifunctional optical thermometry based on the stark sublevels of Er³⁺ in CaO‐Y₂O₃: Yb³⁺/Er³⁺

et al. 2019

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A conventional high temperature solid state method was utilized to prepare CaO-Y 2 O 3 , which is a potential candidate for manufacturing crucible material to melt titanium and titanium alloys with low cost. Meanwhile, Yb 3+ ions and Er 3+ ions were selected as the sensitizers and activators respectively to dope into CaO-Y 2 O 3 , aimed at providing real-time optical thermometry during the preparation process of titanium alloys realized using fluorescence intensity ratio (FIR) technology. The results reveal that a high measurement precision can be acquired by using the Stark sublevels of Er 3+ 4 F 9/2 to measure the temperature with a maximum absolute error of only about 3 K. In addition, by analyzing the dependence of 4 I 13/2 → 4 I 15/2 transition on pump power of 980 nm excitation wavelength, it was found that the laser-induced thermal effect has almost no influence on the temperature measurement conducted by using the FIR of the Stark sublevels of Er 3+ 4 I 13/2 , which means that a high excitation pump power can be used to obtain strong NIR emission and good signal-to-noise ratio for optical thermometry without the influence of the laser-induced thermal effect. All the results reveal that CaO-Y 2 O 3 : Yb 3+ /Er 3+ is an excellent temperature sensing material with high measurement precision. K E Y W O R D Sfluorescence intensity ratio, optical thermometry, upconversion, Yb 3+ /Er 3+

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Er³⁺/Yb³⁺ codoped phosphor Ba₃Y₄O₉ with intense red upconversion emission and optical temperature sensing behavior

Abstract: Bright red upconversion phosphor Ba3Y4O9:Er3+/Yb3+ and dual-color complementary optical thermometry to maintain relatively high sensitivities over a wide temperature scope.

Cited by 118 publications

References 51 publications

Rational Design of Ratiometric Luminescence Thermometry Based on Thermally Coupled Levels for Bioapplications

Rational Design of Ratiometric Luminescence Thermometry Based on Thermally Coupled Levels for Bioapplications

A Thermometer Based on Er‐Sensitized Phosphors Gd₂(WO₄)₃:Er,Yb@SiO₂ in Near‐Infrared and Visible Regions

Multifunctional optical thermometry based on the stark sublevels of Er³⁺ in CaO‐Y₂O₃: Yb³⁺/Er³⁺

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Er3+/Yb3+ codoped phosphor Ba3Y4O9 with intense red upconversion emission and optical temperature sensing behavior

Abstract: Bright red upconversion phosphor Ba3Y4O9:Er3+/Yb3+ and dual-color complementary optical thermometry to maintain relatively high sensitivities over a wide temperature scope.

Cited by 118 publications

References 51 publications

Rational Design of Ratiometric Luminescence Thermometry Based on Thermally Coupled Levels for Bioapplications

Rational Design of Ratiometric Luminescence Thermometry Based on Thermally Coupled Levels for Bioapplications

A Thermometer Based on Er‐Sensitized Phosphors Gd2(WO4)3:Er,Yb@SiO2 in Near‐Infrared and Visible Regions

Multifunctional optical thermometry based on the stark sublevels of Er3+ in CaO‐Y2O3: Yb3+/Er3+

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Product

Resources

About

Er³⁺/Yb³⁺ codoped phosphor Ba₃Y₄O₉ with intense red upconversion emission and optical temperature sensing behavior

A Thermometer Based on Er‐Sensitized Phosphors Gd₂(WO₄)₃:Er,Yb@SiO₂ in Near‐Infrared and Visible Regions

Multifunctional optical thermometry based on the stark sublevels of Er³⁺ in CaO‐Y₂O₃: Yb³⁺/Er³⁺