Step by step designing of sensitive luminescent nanothermometers based on Cr3+,Nd3+ co-doped La3−xLuxAl5−yGayO12 nanocrystals

Elżbieciak-Piecka, K.; Matuszewska, C.; Marciniak, Ł.

doi:10.1039/c9nj03167g

Cited by 28 publications

(14 citation statements)

References 41 publications

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“…The high values of the S at temperatures above 400°C result from the low signal intensity. Nevertheless, the obtained S is comparable with the previously described results for other Cr 3+ based luminescent thermometers [18][19][20].…”

supporting

confidence: 90%

“…The energy at which this inter-section occurs, called activation energy, describes how efficient luminescence of transition metal ion will be quenched at elevated temperatures. In the case of Cr 3+ ions, which are one of the most extensively investigated, the 2 E excited state parabola intersects with the 4 T 2 one [11,12,[17][18][19][20]. Therefore at higher temperatures the non-radiative depopulation leads to the quenching of Cr 3+ emission intensity.…”

Section: Resultsmentioning

confidence: 99%

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ZrB2 matrix composites with Cr3+/Nd3+ doped Al2O3 luminescent nanoparticles for non-contact temperature sensing

Naughton-Duszová¹,

Marciniak²,

Dubiel³

et al. 2020

PAC

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The effect of the addition of Cr 3+ /Nd 3+ doped Al 2 O 3 nanoparticles (Al 2 O 3 co-doped with 1% Cr 3+ and 1% Nd 3+ ions) on the mechanical and luminescent properties of ZrB 2 ceramic composites was investigated. ZrB 2 based composites with addition of 8, 16 and 32 wt.% of alumina nanoparticles were prepared by spark plasma sintering (SPS). Microstructure characteristics were studied by scanning electron microscopy (SEM), elastic modulus by ultrasonic wave transition method, hardness and fracture toughness by the Vickers indentation methods. The addition of alumina nanoparticles had positive effect on the mechanical properties of the composites. Thus, the hardness increased from 14.5 to 16.2 GPa and the fracture toughness from 3.91 to 5.89 MPa•m 1/2 in comparison to the values of the monolithic ZrB 2 system. The composite with the highest additive content showed evident luminescent character and the increase of the temperature caused a reduction of luminescent intensity. This is the first report which shows luminescent properties of ZrB 2 composites. Moreover, for the first time, luminescent properties of Cr 3+ ions were used to develop ZrB 2 matrix composites with Cr 3+ /Nd 3+ doped Al 2 O 3 particles with the self-temperature readout functionality via luminescent thermometry.

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confidence: 90%

Section: Resultsmentioning

confidence: 99%

ZrB2 matrix composites with Cr3+/Nd3+ doped Al2O3 luminescent nanoparticles for non-contact temperature sensing

Naughton-Duszová¹,

Marciniak²,

Dubiel³

et al. 2020

PAC

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“…Currently, a number of works are performed aiming the optimization of the host material composition to alter the thermometric performance of the solely Cr 3+ -based LT [6,31,32,37]. Up till now, several approaches for lowering the crystal field strength, involving modification of the host material stoichiometry and the concentration of Cr 3+ dopant ions were described in detail [27,28,38]. It was shown that by gradual substitution of small ions such as Al 3+ by larger ions like Ga 3+ in octahedral sites of the host crystal matrix, the metal-oxygen bond distance gradually increased and should result in a decrease of the crystal field strength acting on incorporated Cr 3+ ions occupying these sites (Dq ∝…”

Section: Introductionmentioning

confidence: 99%

Structurally induced tuning of the relative sensitivity of LaScO3:Cr3+ luminescent thermometers by co-doping lanthanide ions

Elżbieciak-Piecka

Suta

Marciniak

2021

Chemical Engineering Journal

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Ratiometric luminescence thermometry for remote temperature sensing has been constantly gaining an increasing popularity due to its simplicity with yet high precision. Transition metal ions still have an underestimated potential in that area as their luminescence properties can be tuned by targeted modification of the host compound. In this work, we demonstrate that concept in the phosphor LaScO3:Cr 3+ by co-doping with various lanthanide ions that partially substitute the La 3+ ions of the host. It is demonstrated that the incorporated lanthanide ions affect the bond lengths of the [CrO6] 9octahedra in the structure and thus, have a subtle impact on the local crystal field around the Cr 3+ ions. The changes in the crystal field strength lead to a variation in the energy gap between the thermally coupled 2 E(g) and 4 T2(g) states of Cr 3+ . This has an immediate consequence for the potential use of Cr 3+ as a luminescent thermometer and allows to selectively tune the relative thermal sensitivity and performance of this ion by a suitable choice of the co-doped lanthanide ions. 4 T2(g) → 4 A2(g) transition is more prominent in intermediate to weak crystal fields. In contrast to

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“…There are two general methodologies used in the Nd 3+ ‐based temperature sensors, corresponding to the stark splitting and thermal coupling between two energy states (excited or ground states) [32–35] . In recent years, to further enhance the temperature sensitivity and precision of relevant sensing devices, many co‐doping attempts with other Ln 3+ (Eu 3+ and Yb 3+ ) and transition (Cr 3+ , Mn 3+ , Ti 4+ , V 3+ , and Co 2+ ) luminescent ions were also conducted [36–39] . However, relative sensitivity ( S r ) of the current Nd 3+ ‐based sensing performance is still unsatisfactory and has a certain gap with semiconductor quantum dots and other Ln 3+ ‐based materials [23] .…”

Section: Introductionmentioning

confidence: 99%

Rational Design of a Nd³⁺‐Mn⁴⁺ Co‐doped Luminescent Thermometer: Towards High‐Sensitivity Temperature Sensing

Wang

Zhang

et al. 2021

ChemPhotoChem

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High temperature sensitivity is an important development direction for luminescent thermometers, especially in the physiological temperature range. Herein, neodymium(III) and manganese(IV) ions were co‐doped into a yttrium gallium garnet host (YGG) and the relevant dopant concentrations were optimized in detail. The temperature‐dependent spectral survey indicates that when the temperature was above 240 K, the 2Eg→4A2g transition of Mn4+ and the 4F5/2→4I9/2 emission of Nd3+ show strong fluorescence quenching and gradual fluorescence enhancement, respectively. Such an apparent contrast mainly originates from the nonradiative cross‐relaxation between 2Eg (or 4T2g) and 4A2g states of Mn4+ and thermal coupling between the 4F5/2 and 4F3/2 levels of Nd3+, respectively. The obvious difference in fluorescence between the two luminescent ions leads to an excellent temperature sensing performance. The obtained relative sensitivity shows a maximum value at 280 K (7.90 % K−1) and maintains a magnitude above 5.00 % K−1 over the whole physiological temperature range. Moreover, the related temperature uncertainties are below 0.1 K from 298 K to 323 K, and the repeatability capability is larger than 98 %. The findings in this study offer a feasible approach to promote the sensing capability of temperature sensors by rationally designing co‐doping systems.

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Step by step designing of sensitive luminescent nanothermometers based on Cr³⁺,Nd³⁺ co-doped La_3−xLu_xAl_5−yGa_yO₁₂ nanocrystals

Abstract: In this work we present step by step designing of sensitive luminescent thermometers utilizing Cr3+,Nd3+ co-doped La3−xLuxAl5−yGayO12 garnets.

Cited by 28 publications

References 41 publications

ZrB2 matrix composites with Cr3+/Nd3+ doped Al2O3 luminescent nanoparticles for non-contact temperature sensing

ZrB2 matrix composites with Cr3+/Nd3+ doped Al2O3 luminescent nanoparticles for non-contact temperature sensing

Structurally induced tuning of the relative sensitivity of LaScO3:Cr3+ luminescent thermometers by co-doping lanthanide ions

Rational Design of a Nd³⁺‐Mn⁴⁺ Co‐doped Luminescent Thermometer: Towards High‐Sensitivity Temperature Sensing

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Step by step designing of sensitive luminescent nanothermometers based on Cr3+,Nd3+ co-doped La3−xLuxAl5−yGayO12 nanocrystals

Abstract: In this work we present step by step designing of sensitive luminescent thermometers utilizing Cr3+,Nd3+ co-doped La3−xLuxAl5−yGayO12 garnets.

Cited by 28 publications

References 41 publications

ZrB2 matrix composites with Cr3+/Nd3+ doped Al2O3 luminescent nanoparticles for non-contact temperature sensing

ZrB2 matrix composites with Cr3+/Nd3+ doped Al2O3 luminescent nanoparticles for non-contact temperature sensing

Structurally induced tuning of the relative sensitivity of LaScO3:Cr3+ luminescent thermometers by co-doping lanthanide ions

Rational Design of a Nd3+‐Mn4+ Co‐doped Luminescent Thermometer: Towards High‐Sensitivity Temperature Sensing

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Step by step designing of sensitive luminescent nanothermometers based on Cr³⁺,Nd³⁺ co-doped La_3−xLu_xAl_5−yGa_yO₁₂ nanocrystals

Rational Design of a Nd³⁺‐Mn⁴⁺ Co‐doped Luminescent Thermometer: Towards High‐Sensitivity Temperature Sensing