Sensitive temperature reading from intensity ratio of Cr3+ and defects’ emissions in MgTiO3:Cr3+

Ćirić, Aleksandar; Periša, Jovana; Medić, Mina; Kuzman, Sanja; Ristić, Zoran; Antić, Željka; Dramićanin, Miroslav D.

doi:10.1016/j.ceramint.2021.08.077

Cited by 16 publications

(8 citation statements)

References 37 publications

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“…The sharp line at 698 nm is considered to be the well-known R-line, and the broad band with several peaks is probably assigned to 4 T 2g → 4 A 2g . [36][37][38][39][40][41][42][43] To prove above assignments of luminescence, PL spectra of sample doped with different concentrations were collected, where the XRD patterns demonstrated that the sample remained pure phase (Figure S3, Supporting Information). At low doping concentration, the sample mainly exhibited a narrow emission band, whereas the sample mainly exhibited a broad band with 4 T 2g → 4 A 2g tran-sition at high doping concentration, exhibiting peaks 2, 3, and 4 merged into a broad band, this variation trend proved that peaks 2, 3, and 4 originated from the same 4 T 2g energy level (Figure 2b).…”

Section: Resultsmentioning

confidence: 99%

Cr³⁺‐Facilitated Ultra‐Sensitive Luminescence Ratiometric Thermometry at Cryogenic Temperature

Wei

Wang

et al. 2023

Laser & Photonics Reviews

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Non‐contact ratiometric luminescence thermometry continues to gain popularity over decades due to its fascinating features of high accuracy, fast response, and simplicity. In this regard, rational design of optical thermometers with ultrahigh relative sensitivity and low temperature resolution has become a cutting‐edge topic. Herein, a luminescence intensity ratio thermometric method depending on the emission line at 698 nm (peak 1) and the emission bands at 713 and 721 nm (peaks 2 and 3) of Li1.97Zn1.0292Ge3O8:0.08%Cr3+ is proposed. As temperature elevates from 50 to 300 K, the 698 nm emission line undergoes an 84‐fold increase while the 713 and 721 nm emission bands show the opposite decline trend. This fascinating feature enables high relative sensitivity of 13.09% K−1 and low temperature resolution of 0.032 K, which are superior to most of the reported optical thermometers. This work is expected to provide more insights for designing excellent and reliable optical thermometers by employing Cr3+ activated luminescent materials.

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Section: Resultsmentioning

confidence: 99%

Cr³⁺‐Facilitated Ultra‐Sensitive Luminescence Ratiometric Thermometry at Cryogenic Temperature

Wei

Wang

et al. 2023

Laser & Photonics Reviews

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“…The emissions at 685 nm, 700 nm, and 730 nm belong to 5 D 0 → 7 F 0,1,2 transitions, respectively. [ 36 ] The excitation spectra in Figure 2e are obtained by monitoring the most intense Sm 2+ emission. The broad bands correspond to the 4f5d levels of Sm 2+ .…”

Section: Resultsmentioning

confidence: 99%

“…By observing only Al 2 O 3 :Sm 2+ temperature‐dependent spectra (Figure S2, Supporting Information and Ref. [36]) a broad peak increases in intensity with temperature. Thus, the overall intensity of 4f5d‐4f emission of Sm 2+ and Eu 3+ emission follows the trend displayed in Figure 4c.…”

Section: Resultsmentioning

confidence: 99%

“…The result of the PEO process was polycrystalline M x O y :D z coating where dopant ion creates luminescence. [7,32,33] In our previous works we have created Ruby (𝛼-Al 2 O 3 :Cr 3+ ), [34] Ti-Sapphire (𝛼-Al 2 O 3 :Ti 3+ ), [35] 𝛾-Al 2 O 3 :Sm 2+ , [36] 𝛾-Al 2 O 3 :Eu 2+ , [37] and various Al 2 O 3 , ZrO 2 , ZnO, TiO 2 , Y 2 O 3 , Gd 2 O 3 , and HfO 2 coatings, [32] with various Ln or TM dopants. However, the creation of luminescent coatings by the addition of a luminescent powder had not been tested, and it was unclear whether such doping would affect the morphology and phase, or if it would incorporate its particles within the coatings or would it dissolve and incorporate its constituents.…”

Section: Introductionmentioning

confidence: 99%

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Multifunctional Al₂O₃:Eu²⁺/Sm^2+,3+ + Y₂O₃:Eu³⁺ Coatings Created by the Plasma Electrolytic Oxidation

Ćirić

Stojadinović

Dramićanin

2023

Adv Materials Technologies

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The industrial applications of luminescent coatings for temperature sensing and high‐security QR codes have multiple inherent problems in their application (speed, cost, industrial feasibility) or properties (poor adhesion, chemical, thermal stability, or thermal contact). Luminescent coatings created by the electrochemical Plasma Electrolytic Oxidation (PEO) process have superior properties and can be grown directly within minutes, but are limited to the number of possible luminescent dopants. Having the unlimited possibility for doping on the PEO coatings would provide for superior coatings in all industrially appealing features. Herein, it is shown that adding any luminescent powder results in its partial dissociation and incorporation of its constituents, while it also gets incorporated as a whole. In this manner, alumina coatings are grown with various combinations and concentrations of divalent samarium and europium, and yttrium oxide with trivalent europium ions. These polycrystalline coatings whose microhardness is next to that of the diamond produce intense luminescence in the blue and red regions. Al2O3:Eu2+/Sm2+/3+ + Y2O3:Eu3+ coatings show an excellent temperature sensing performance from the cryogenic up to the high temperatures. Ultimately, the proof‐of‐concept of the luminescent QR code by the electrochemical process is realized creating a highly secure code with unprecedented environmental stability.

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“…The fact that Cr 3+ ions reveal luminescence from the 2 E (g) or 4 T 2(g) excited states is their additional advantage that allows for their application in luminescence thermometry. From this perspective host materials of intermediate crystal field strength are especially attractive, since in such case the thermal coupling between 2 E (g) and 4 T 2(g) occurs and the luminescence intensity ratio (LIR) of 2 E (g) → 4 A 2(g) to 4 T 2(g) → 4 A 2(g) can be described by Boltzmann distribution 48 – 51 .…”

Section: Introductionmentioning

confidence: 99%

Optical heating and luminescence thermometry combined in a Cr3+-doped YAl3(BO3)4

Elżbieciak-Piecka

Marciniak

2022

Sci Rep

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The possibility of optical heating with simultaneous control of the generated light within a single phosphor is particularly attractive from the perspective of multiple applications. This motivates the search for new solutions to enable efficient optical heating. In response to these requirements, based on the high absorption cross-section of Cr3+ ions, the optical heater based on YAl3(BO3)4:Cr3+ exhibiting highly efficient heating is developed. At the same time, the emission intensity ratio of 2E(g) → 4A2(g) and 4T2(g) → 4A2(g) of Cr3+ bands, thanks to the monotonic temperature dependence, enables remote temperature readout of the phosphor using luminescence thermometry technique. The combination of these two functionalities within a single phosphor makes YAl3(BO3)4:Cr3+ a promising, self thermally controlled photothermal agent.

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Sensitive temperature reading from intensity ratio of Cr3+ and defects’ emissions in MgTiO3:Cr3+

Cited by 16 publications

References 37 publications

Cr³⁺‐Facilitated Ultra‐Sensitive Luminescence Ratiometric Thermometry at Cryogenic Temperature

Cr³⁺‐Facilitated Ultra‐Sensitive Luminescence Ratiometric Thermometry at Cryogenic Temperature

Multifunctional Al₂O₃:Eu²⁺/Sm^2+,3+ + Y₂O₃:Eu³⁺ Coatings Created by the Plasma Electrolytic Oxidation

Optical heating and luminescence thermometry combined in a Cr3+-doped YAl3(BO3)4

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Sensitive temperature reading from intensity ratio of Cr3+ and defects’ emissions in MgTiO3:Cr3+

Cited by 16 publications

References 37 publications

Cr3+‐Facilitated Ultra‐Sensitive Luminescence Ratiometric Thermometry at Cryogenic Temperature

Cr3+‐Facilitated Ultra‐Sensitive Luminescence Ratiometric Thermometry at Cryogenic Temperature

Multifunctional Al2O3:Eu2+/Sm2+,3+ + Y2O3:Eu3+ Coatings Created by the Plasma Electrolytic Oxidation

Optical heating and luminescence thermometry combined in a Cr3+-doped YAl3(BO3)4

Contact Info

Product

Resources

About

Cr³⁺‐Facilitated Ultra‐Sensitive Luminescence Ratiometric Thermometry at Cryogenic Temperature

Cr³⁺‐Facilitated Ultra‐Sensitive Luminescence Ratiometric Thermometry at Cryogenic Temperature

Multifunctional Al₂O₃:Eu²⁺/Sm^2+,3+ + Y₂O₃:Eu³⁺ Coatings Created by the Plasma Electrolytic Oxidation