Luminescence intensity ratio based wide range contactless temperature sensing properties of Er3+/Yb3+ ions co-doped La2Ti2O7 ceramics

Swami, Ravina; Shandilya, Ankur; Shukla, Anuj; Kumar, P. Senthil; Sreenivas, K.

doi:10.1016/j.jallcom.2023.169610

Cited by 9 publications

(2 citation statements)

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“…Conventional temperature measurement methods are becoming obsolete due to drawbacks such as the inability to measure under extreme conditions, the inability to measure moving objects, and the need for prolonged contact. Therefore, luminescence intensity ratio (LIR) thermometry based on Ln 3+ -doped luminescent materials is widely favored for its advantages of self-referencing, fast response, high temperature resolution, no need for contact, and suitability for extreme conditions. − Current LIR-based temperature sensing techniques are mainly classified into two types: thermally coupled levels (TCLs) temperature measurement and nonthermally coupled levels (NTCLs) temperature measurement. − Regardless of the type of thermometer, the relative sensitivity is the most important parameter to judge its temperature measurement performance. TCLs are those where the energy gap between the two energy levels is in the range of 200 to 2000 cm –1 and where the change in the distribution of particles with temperature is in accordance with Boltzmann’s law.…”

Section: Introductionmentioning

confidence: 99%

Toward Ultra-High Sensitivity Optical Thermometers and Bright Yellow LEDs Based on Phonon-Assisted Energy Transfer in Rare Earth-Doped La₂ZnTiO₆ Double Perovskite

Yu,

Li,

Dai

et al. 2024

Inorg. Chem.

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Double perovskites, a class of ceramic oxides with unique crystal structures and diverse physical properties, show promise for various technological applications including solar cells, photodetectors, and light-emitting diodes (LEDs). Despite limited research on rare earth-doped double perovskites, leveraging their ultrahigh luminous efficiency to achieve bright yellow LED emission and addressing energy transfer challenges between Yb 3+ and Nd 3+ ions in double perovskite La 2 ZnTiO 6 with moderate phonon energy are explored in this work. Through phonon-assisted energy transfer, an ultrasensitive optical thermometer covering a wide temperature range is developed by utilizing the different temperature responses of Er 3+ emission in the visible light region and Nd 3+ emission in the near-infrared region based on the luminescence intensity ratio (LIR). All the results demonstrate that the rare earth (Yb−Er, Yb−Nd, and Yb−Nd−Er)-doped La 2 ZnTiO 6 phosphors can be effectively utilized for ultrabright LED illumination and ultrahigh sensitivity self-calibrated temperature sensing. This research underscores the significance of phonon-assisted energy transfer in improving material properties and provides valuable insights for the advancement of multifunctional materials.

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Section: Introductionmentioning

confidence: 99%

Toward Ultra-High Sensitivity Optical Thermometers and Bright Yellow LEDs Based on Phonon-Assisted Energy Transfer in Rare Earth-Doped La₂ZnTiO₆ Double Perovskite

Yu,

Li,

Dai

et al. 2024

Inorg. Chem.

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“…16 In the literature, studies have focused on single/codoped dilanthanum titanate systems for solid-state lighting and optical thermometry. [17][18][19][20][21][22][23][24][25] To the best of our knowledge, there are no extensive studies on upconversion white light emission for tri-doped La 2 Ti 2 O 7 .…”

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confidence: 99%

Laser-Induced Tunable White Light Emission in Yb³⁺/Er³⁺/Tm³⁺ Ion-Doped La₂Ti₂O₇

Cantürk

Tabanli

Örücü

et al. 2023

ECS J. Solid State Sci. Technol.

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A series of compounds with the general formula (La1−xREx)2Ti2O7 (x = 0.005, 0.015, and 0.025) doped with Yb3+, Er3+, and Tm3+ rare earth ions were prepared by the traditional solid-state reaction at 1350°C for 24 h. The X-ray powder diffraction technique, high-resolution transmission electron microscopy, and photoluminescence spectroscopy technique were used to characterize the structure and optical properties of the compounds. All compounds showed a single-phase orthorhombic structure with a space group Pna21, as confirmed by JCPDS (Cart No: 01-070-1690). The La1.9Yb0.04Er0.01Tm0.05 Ti2O7 nanocrystals exhibited intense tunable white light luminescence signals in the full spectrum, and green and blue emissions were predominant in the Yb3+/Er3+- and Yb3+/Tm3+-doped titanates, respectively. In this study, the influence of concentration and excitation power on the upconversion luminescence, color, and calculated laser-power-induced heating performance of La2Ti2O7 nanophosphors were investigated at room temperature.

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The Rise of Nanotechnology in Pharmaceutical and Healthcare Packaging: Applications and Future Prospective

Bumbudsanpharoke,

Harnkarnsujarit,

Gilchrist

et al. 2024

Packag Technol Sci

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Advanced nanotechnology, an emerging technology of nanoscale materials, has been rapidly expanding in the pharmaceutical and healthcare packaging industries to protect drug performance and ensure consumer safety as the primary goals. The review commences by establishing the fundamental principles of pharmaceutical packaging. It then delves into the diverse applications of nanotechnology for both enteral and parenteral dosage forms. A broad spectrum of nanomaterials is explored, ranging from established options like noble metal and polysaccharide‐based nanoparticles to cutting‐edge materials such as rare earth metal complexes and carbon dots. Furthermore, the review highlights the potent functionalities enabled by nanotechnology. These functionalities encompass anti‐counterfeiting measures utilizing holograms and photoluminescent topcoats, tracking and monitoring capabilities facilitated by radio frequency identification (RFID) tags, and colorimetric indicators for drug integrity. Additionally, the review discusses commercially available products, acknowledges safety considerations and regulatory frameworks, and concludes by outlining the future prospects of nanotechnology in pharmaceutical and healthcare packaging.

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Luminescence intensity ratio based wide range contactless temperature sensing properties of Er3+/Yb3+ ions co-doped La2Ti2O7 ceramics

Cited by 9 publications

References 50 publications

Toward Ultra-High Sensitivity Optical Thermometers and Bright Yellow LEDs Based on Phonon-Assisted Energy Transfer in Rare Earth-Doped La₂ZnTiO₆ Double Perovskite

Toward Ultra-High Sensitivity Optical Thermometers and Bright Yellow LEDs Based on Phonon-Assisted Energy Transfer in Rare Earth-Doped La₂ZnTiO₆ Double Perovskite

Laser-Induced Tunable White Light Emission in Yb³⁺/Er³⁺/Tm³⁺ Ion-Doped La₂Ti₂O₇

The Rise of Nanotechnology in Pharmaceutical and Healthcare Packaging: Applications and Future Prospective

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Luminescence intensity ratio based wide range contactless temperature sensing properties of Er3+/Yb3+ ions co-doped La2Ti2O7 ceramics

Cited by 9 publications

References 50 publications

Toward Ultra-High Sensitivity Optical Thermometers and Bright Yellow LEDs Based on Phonon-Assisted Energy Transfer in Rare Earth-Doped La2ZnTiO6 Double Perovskite

Toward Ultra-High Sensitivity Optical Thermometers and Bright Yellow LEDs Based on Phonon-Assisted Energy Transfer in Rare Earth-Doped La2ZnTiO6 Double Perovskite

Laser-Induced Tunable White Light Emission in Yb3+/Er3+/Tm3+ Ion-Doped La2Ti2O7

The Rise of Nanotechnology in Pharmaceutical and Healthcare Packaging: Applications and Future Prospective

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Product

Resources

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Toward Ultra-High Sensitivity Optical Thermometers and Bright Yellow LEDs Based on Phonon-Assisted Energy Transfer in Rare Earth-Doped La₂ZnTiO₆ Double Perovskite

Toward Ultra-High Sensitivity Optical Thermometers and Bright Yellow LEDs Based on Phonon-Assisted Energy Transfer in Rare Earth-Doped La₂ZnTiO₆ Double Perovskite

Laser-Induced Tunable White Light Emission in Yb³⁺/Er³⁺/Tm³⁺ Ion-Doped La₂Ti₂O₇