Exploration of up-conversion thermal enhancement mechanism and application on temperature sensing of Sc2W3O12: Yb3+, Er3+ materials

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Upconverting NIR-to-NIR LuVO4:Nd3+/Yb3+ Nanophosphors for High-Sensitivity Optical Thermometry

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Summary: This study successfully applied LuVO4:Nd3+/Yb3+ nanophosphors for temperature measurements and investigated the effects of different dispersion systems and Yb3+ doping concentrations on the thermometric performance.

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Thermal enhancement of upconversion in lanthanide-doped Gd2Ti2O7 crystals via fast evaporation in a sol-gel procedure

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Lanthanide ions doped nonhygroscopic La2Mo3O12 microcrystals based on multimode luminescence for optical thermometry

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How to Obtain Anti-Thermal-Quenching Inorganic Luminescent Materials for Light-Emitting Diode Applications

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Excitation-wavelength-dependent anti-thermal quenching of upconversion luminescence in hexagonal NaGdF4:Nd3+/Yb3+/Er3+ nanocrystals

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Summary: This study demonstrates that the temperature effect on UC luminescence in NaGdF4:Nd3+/Yb3+/Er3+ nanocrystals is strongly dependent on the exciting wavelength. The UC luminescence shows good resistance to thermal quenching when excited using 808 nm radiation. The research provides a novel strategy for anti-thermal quenching of upconversion luminescence with potential applications in dynamic UC anti-counterfeiting, NIR-I-responsive thermometers, and nanoheating.

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Article Chemistry, Physical

Giant Enhancement in Upconversion Luminescence of ?-Ba2ScAlO5:Yb3+/Er3+ Phosphor by the Intermediate Band through

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Summary: In this study, an effective enhancement in red upconversion luminescence intensity was achieved through Ca2+ doping, and the existence of an intermediate band was verified. The proposed energy transfer mechanism and temperature-dependent properties suggest the potential for biomedical temperature-sensing applications.

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Fluorescence intensity ratio technique and its reliability

Vishab Kesarwani et al.

Summary: The article investigates the optical absorption and upconversion properties of Er3+/Yb3+ doped/codoped glasses. The intensity parameters are calculated from the absorption spectrum to predict the relevant properties. The study shows that the glasses exhibit highly pure green emission and low thermal quenching with respect to temperature changes.

METHODS AND APPLICATIONS IN FLUORESCENCE (2022)

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Article Chemistry, Physical

Thermally stable upconverting Na3Zr2(SiO4)2PO4: Er3+/Yb3+phosphors for displays and optical thermometry

Manisha Prasad et al.

Summary: This article presents the analysis of advanced Er3+/Yb3+: Na3Zr2(SiO4)(2)PO4 (NASICON) monoclinic phosphors prepared by solid state reaction technique as upconverting materials. The structural parameters, surface morphology, and optical characteristics of the synthesized phosphors are analyzed. The codoping of Yb3+ ions in the Er3+ doped phosphors exhibit fascinating results under 980 nm continuous wave diode laser excitation, which can be used for thermometry based on fluorescence intensity ratio (FIR).

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Oxygen vacancy content drives self-reduction and anti-thermal quenching

Yuxing Bai et al.

Summary: This study proposes an effective synthesis strategy to achieve excellent performances of yellow-emitting phosphors by modulating the contents of lattice defects. The research demonstrates that oxygen vacancies are responsible for the self-reduction process and anti-thermal quenching. By optimizing the oxygen vacancy content, the high-temperature behaviors of the targeted phosphor are improved, which verifies the positive response of properties to defect control. The fabricated WLED shows a good color rendering index, indicating the potential application of the prepared sample.

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Luminescence Ratiometric Nanothermometry Regulated by Tailoring Annihilators of Triplet-Triplet Annihilation Upconversion Nanomicelles

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ANGEWANDTE CHEMIE-INTERNATIONAL EDITION (2021)

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Synthesis of Core-Shell ScF3 Nanoparticles for Thermal Enhancement of Upconversion

Biyun Ren et al.

Summary: Lanthanide-doped ScF3 nanoparticles were synthesized and studied for their thermal enhancement of upconversion, showing a significant increase in emission within a certain temperature range and high temperature sensitivity. The development of new methods may inspire the creation of thermally enhanced upconversion nanoparticles with high emission intensities.

CHEMISTRY OF MATERIALS (2021)

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A review on fluorescence intensity ratio thermometer based on rare-earth and transition metal ions doped inorganic luminescent materials

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Supersensitive Sm2+-Activated Al2O3 Thermometric Coatings for High-Resolution Multiple Temperature Read-Outs from Luminescence

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Integrating Positive and Negative Thermal Quenching Effect for Ultrasensitive Ratiometric Temperature Sensing and Anti-counterfeiting

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Thermal enhancement of up-conversion luminescence in Lu2W2.5Mo0.5O12: Er3+, Yb3+ phosphors

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Summary: Lu2W2.5Mo0.5O12: Er3+/Yb3+ phosphors were synthesized using a high temperature solid-state method and exhibited thermal enhancement of upconversion luminescence under 980 nm laser excitation. At elevated temperatures, the green luminescence intensity of the samples increased significantly, accompanied by higher absolute sensitivities. The green monochromaticity of the samples also improved with increasing temperature, showing potential for application as optical thermometers in high temperature environments.

CERAMICS INTERNATIONAL (2021)

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Luminescent Yttrium Oxide Nanosheets for Temperature Sensing

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Defect-Induced Self-Reduction and Anti-Thermal Quenching in NaZn(PO3)3:Mn2+ Red Phosphor

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MOF-Nanocomposite Mixed-Matrix Membrane for Dual-Luminescence Ratiometric Temperature Sensing

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Anti-thermal-quenching red-emitting GdNbO4:Pr3+ phosphor based on metal-to-metal charge transfer for optical thermometry application

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Negative thermal expansion triggered anomalous thermal upconversion luminescence behaviors in Er3+/Yb3+-codoped Y2Mo3O12 microparticles for highly sensitive thermometry

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Summary: This study designed Er3+/Yb3+-codoped Y2Mo3O12 microparticles with thermally enhanced upconversion emission. It was found that the optimal Yb3+ ion content in the host is 13 mol%, with a two-photon excitation process involved in the upconversion mechanism. The NTE effect triggered an increase in upconversion emission intensity with temperature, making the materials suitable for thermal measurement.

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Exploration of up-conversion thermal enhancement mechanism and application on temperature sensing of Sc2W3O12: Yb3+, Er3+ materials

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