A ratiometric optical thermometer with high sensitivity and superior signal discriminability based on Na3Sc2P3O12: Eu2+, Mn2+ thermochromic phosphor

Zhang, Xinguo; Zhu, Zhenpeng; Guo, Ziying; Sun, Zishan; Chen, Yibo

doi:10.1016/j.cej.2018.09.075

Cited by 251 publications

(78 citation statements)

References 35 publications

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“…Several studies have reported using a CIE diagram a strong color response of some luminescent compounds for thermometry. 38 − 42 In order to, in the future, compare the thermochromic performance of these materials, we, for the first time, suggest to consider the relative sensitivity of the emission color CIE coordinate as figure of merit parameters [ S R ( x ), S R ( y ) calculated using eq 6 ]. These parameters would be the chromatic counterpart of the relative sensitivity, which is an accepted figure of merit for the ratio of intensities between transitions from thermalized levels.…”

Section: Results and Discussionmentioning

confidence: 99%

Thermochromic Luminescent Nanomaterials Based on Mn⁴⁺/Tb³⁺ Codoping for Temperature Imaging with Digital Cameras

Piotrowski

Trejgis

Maciejewska

et al. 2020

ACS Appl. Mater. Interfaces

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A new thermographic nanocrystalline Sr 4 Al 14 O 25 :Mn 4+ ,Tb 3+ phosphor was developed, and the concentrations of both dopants and the synthesis conditions were optimized. The combination of the thermally quenched luminescence from the Mn 4+ ions to the almost temperature-independent emission from Tb 3+ provides a sensitive luminescent thermometer ( S R = 2.8%/°C at 150 °C) with strong emission color variability. In addition, a figure of merit for this luminescence thermochromism was proposed, as the relative sensitivities of the x and y CIE coordinates, which for this phosphor reaches at 150 °C S R ( x ) = 0.6%/°C and S R ( y ) = 0.4%/°C, respectively. Noncontact thermal imaging was demonstrated with this phosphor using a single consumer digital camera and exploiting the ratio of red (R) and green (G) channels of the RGB images, thereby confirming the high application potential of Sr 4 Al 14 O 25 :Mn 4+ ,Tb 3+ nanocrystals for thermal sensing and mapping.

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Section: Results and Discussionmentioning

confidence: 99%

Thermochromic Luminescent Nanomaterials Based on Mn⁴⁺/Tb³⁺ Codoping for Temperature Imaging with Digital Cameras

Piotrowski

Trejgis

Maciejewska

et al. 2020

ACS Appl. Mater. Interfaces

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“…50-0426) without any impurity phases, which, together with no evident peak shift observed in the patterns signifying that the doping of Bi 3+ and Mn 4+ ions did not result in any significant changes to the host's crystallinity. With reference to ICSD-50292, phase data of Ca 14 are more reasonable to substitute Ca 2+ (CN = 6, r = 1.00 Å) and Al 3+ (CN = 4, r = 0.39 Å) ions preferentially in the CAZO host, respectively. Figure 2A displays the emission and excitation spectra of the Bi 3+ ion singly doped CAZO phosphor.…”

Section: Phase Formation and Structure Characteristicsmentioning

confidence: 99%

None‐rare‐earth activated Ca₁₄Al₁₀Zn₆O₃₅:Bi³⁺,Mn⁴⁺ phosphor involving dual luminescent centers for temperature sensing

et al. 2019

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We proposed a new strategy for utilizing rare‐earth–free‐activated self‐referencing optical material with dual activators for temperature sensing, which was synthesized by conventional high‐temperature solid‐state method and was scarcely reported. Originating from the different thermal responses of Mn4+ and Bi3+ ions, a Mn4+/Bi3+‐based dual‐emitting fluorescence intensity ratio (FIR) as dual‐modal temperature signal for temperature sensing has been corroborated as a promising temperature sensing method. Due to the outstanding thermal resistance of activator Mn4+ (anti‐Stokes) benefiting from the unique 3dn electronic configurations and strong field strength of host, together with the energy transfer from Bi3+ to Mn4+ ions and excellent thermal quenching of Bi3+, this temperature‐sensitive phosphor displayed both an extensive detection temperature region ranging from 303 to 563 K and excellent absolute and relative sensitivity of 0.0147 K−1 and 1.21% K−1 respectively, both of which are higher than some foregoing reported optical materials. Furthermore, two well‐separated emission peaks at blue and red regions enabled an excellent signal discriminability and accurate temperature detection under the single‐wavelength excitation of 340 nm. In addition, freedom from rare‐earth ions contributed its possibility to be mass‐produced for meeting the needs of economic rationality, nontoxic and convenient synthesis. It is anticipated that this preliminary study would arouse peoples’ attention on exploring more novel dual activator‐based optical thermometric materials in absence of rare‐earth ions.

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“…Second, the increase in temperature may improve the ETE between the host and the Tb 3+ , resulting in the rapid emission quenching of the mechanism, while Tb 3+ is relatively slow. In addition, the energy transfer from the trap to Tb 3+ will also make up for part of the thermal quenching of Tb 3+ 29 …”

Section: Resultsmentioning

confidence: 99%

High‐temperature persistent luminescence and visual dual‐emitting optical temperature sensing in self‐activated CaNb₂O₆: Tb³⁺ phosphor

et al. 2020

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The long persistent luminescence (PersL) and color adjustable properties in high‐temperature environment are of great significance for luminescent materials in the fields of multiple anti‐counterfeiting, biological imaging, and optical temperature sensing (OTS). In this work, a series of self‐activated CaNb2O6 (CNO): Tb3+ phosphors have been successfully synthesized by solid‐state reaction route, the OTS, and temperature‐dependent PersL of these phosphors is carried out and investigated in detail. Relying on the energy transfer from host to the activator Tb3+ ion, the visual color‐tunable emissions from blue to green were detected with the increase of temperature and the maximum absolute and relative sensitivities reach 0.955% K‐1 and 1.243% K‐1. Moreover, the temperature‐dependent PersL characteristics were investigated systematically, and the initial brightness and the lasting time all reach a maximum value at 323 K in the representative CNO: 1%Tb3+ sample. All the results show that the high‐temperature persistent phosphor has potential applications in OTS and anti‐counterfeiting field.

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A ratiometric optical thermometer with high sensitivity and superior signal discriminability based on Na3Sc2P3O12: Eu2+, Mn2+ thermochromic phosphor

Cited by 251 publications

References 35 publications

Thermochromic Luminescent Nanomaterials Based on Mn⁴⁺/Tb³⁺ Codoping for Temperature Imaging with Digital Cameras

Thermochromic Luminescent Nanomaterials Based on Mn⁴⁺/Tb³⁺ Codoping for Temperature Imaging with Digital Cameras

None‐rare‐earth activated Ca₁₄Al₁₀Zn₆O₃₅:Bi³⁺,Mn⁴⁺ phosphor involving dual luminescent centers for temperature sensing

High‐temperature persistent luminescence and visual dual‐emitting optical temperature sensing in self‐activated CaNb₂O₆: Tb³⁺ phosphor

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A ratiometric optical thermometer with high sensitivity and superior signal discriminability based on Na3Sc2P3O12: Eu2+, Mn2+ thermochromic phosphor

Cited by 251 publications

References 35 publications

Thermochromic Luminescent Nanomaterials Based on Mn4+/Tb3+ Codoping for Temperature Imaging with Digital Cameras

Thermochromic Luminescent Nanomaterials Based on Mn4+/Tb3+ Codoping for Temperature Imaging with Digital Cameras

None‐rare‐earth activated Ca14Al10Zn6O35:Bi3+,Mn4+ phosphor involving dual luminescent centers for temperature sensing

High‐temperature persistent luminescence and visual dual‐emitting optical temperature sensing in self‐activated CaNb2O6: Tb3+ phosphor

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Thermochromic Luminescent Nanomaterials Based on Mn⁴⁺/Tb³⁺ Codoping for Temperature Imaging with Digital Cameras

Thermochromic Luminescent Nanomaterials Based on Mn⁴⁺/Tb³⁺ Codoping for Temperature Imaging with Digital Cameras

None‐rare‐earth activated Ca₁₄Al₁₀Zn₆O₃₅:Bi³⁺,Mn⁴⁺ phosphor involving dual luminescent centers for temperature sensing

High‐temperature persistent luminescence and visual dual‐emitting optical temperature sensing in self‐activated CaNb₂O₆: Tb³⁺ phosphor