Multifunctional optical thermometry using dual-mode green emission of CaZrO<sub>3</sub>:Er/Yb/Mo perovskite phosphors

Nam, Hyoungsik; Tam, Phuong Dinh; Hai, Nguyen Van; Van, Hoang Nhu

doi:10.1039/d3ra02759g

Cited by 13 publications

(4 citation statements)

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“…CeO 2 :0.04Sm 3+ , 0.04Eu 3+ shows CIE coordinates (0.622, 0.375) close to pure red. 14 Furthermore, these CIE coordinates were used for calculating the color purity of the investigated phosphors, which can be described as eqn (2): 30 where ( x , y ) and ( x i = 0.3333, y i = 0.3333) are the color coordinates of the investigated samples and the white light source, respectively; ( x d , y d ) corresponds to the color coordinates of the dominant wavelength. 31 These values ( x , y ), ( x i , y i ), and ( x d , y d ) were plugged into eqn (2), and the color purity of the resulting phosphors is displayed in Table 2.…”

Section: Resultsmentioning

confidence: 99%

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High-efficiency energy transfer in the strong orange-red-emitting phosphor CeO₂:Sm³⁺, Eu³⁺

Van Hai,

Khanh Linh,

Hien

et al. 2023

RSC Adv.

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Section: Resultsmentioning

confidence: 99%

Section: Morphology and Chemical Element Composition Analysismentioning

confidence: 99%

High-efficiency energy transfer in the strong orange-red-emitting phosphor CeO₂:Sm³⁺, Eu³⁺

Van Hai,

Khanh Linh,

Hien

et al. 2023

RSC Adv.

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“…When the Eu 3 + content is higher by 4 % mol, the emission intensity decreases due to the concentration quenching effect. [38] The CeO 2 :0.04Eu sample with the highest emission intensity was selected to synthesize and characterize CeO 2 :Eu, Li + phosphors.…”

Section: Sem Image Of All Samplesmentioning

confidence: 99%

Judd–Ofelt Intensity Parameters and Optical Properties of Eu/Li Co‐Doped CeO₂ Phosphor

Hai,

Van

2024

ChemistrySelect

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In this work, the intense orange‐red emission of Eu3+ singly and Eu3+/Li+ co‐doped CeO2 phosphors synthesized by solution combustion using urea as fuel was investigated experimentally and theoretycally. X‐ray diffraction and high‐resolution transmission electron microscope analysis confirmed the formation of a single‐phase CeO2 cubic with high crystallinity. Under 360 nm excitation, the phosphors emitted an intense orange–red region of Eu3+ as a function of Li+ doping content. Significantly, it was enhanced 12/10 times by Li+ co‐doping due to the increased crystallinity of the host lattice. The energy transfer proccesse associated with cross‐relaxation is responsible for decreasing the experimental lifetime of Eu3+. The influence of Li+ doping content on the characterization properties of CeO2:Eu, Li phosphors was further explained using Judd‐Ofelt (J−O) theory, from which branching ratios (βr), transition probability (A), radiative lifetime (τcal), and stimulated cross‐section (σe) emission of the phosphors were estimated. The results indicate that an effectively improved crystallinity by Li+ co‐doped CeO2:Eu can significantly enhance its luminescence intensity, making it suitable for optoelectronic and display applications.

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“…Dual-Mode Emission is one kind of technique as we discussed in previous sections by improving sensitivity and colour purity, dual-mode emitting phosphors are more appropriate for use in optoelectronic devices and thermal sensor applications. 168 Secondly, Intensity Ratio Techniques this method can offer more sensitivity and be less reliant on surface emissivity. It measures the ratio of luminescence intensity at two distinct wavelengths.…”

Section: Advantages and Limitationsmentioning

confidence: 99%

Review—Structural and Optical Interpretations on Phosphor-Based Optical Thermometry

Tejas Chennappa,

Kamath

2024

ECS J. Solid State Sci. Technol.

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This comprehensive review article discusses the brief history, development, and applications of phosphor-based optical thermometers, which have become increasingly important in various fields due to their ability to measure temperature remotely and with high precision. The article highlights the importance of choosing the suitable phosphor material for a given application, considering factors such as crystal structure and mode of thermometry. It then delves into the structural importance of phosphors, discussing their luminescent properties. The review focuses particularly on fluorescence-based temperature-dependent techniques, including the fluorescence intensity ratio method, which has garnered significant attention due to its straightforward implementation, affordability, and self-referential nature. The article discusses the mathematical formulations underlying this method, including the Boltzmann distribution and the effective lifetime calculation. The review also explores the concept of dual-mode thermometry, which involves the use of multiple luminescent centers to enhance sensitivity and thermal stability. This approach is particularly useful in applications where single-emitter thermometers are vulnerable to variations in excitation intensity or detector stability. The article highlights the advantages, limitations, and future developments of phosphor-based thermometers, including their ability to measure temperature remotely and with high precision.

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Multifunctional optical thermometry using dual-mode green emission of CaZrO₃:Er/Yb/Mo perovskite phosphors

Abstract: High-sensor sensitivity and high green color purity based on the intense green dual-mode emission of CaZrO3:Er/Yb/Mo perovskite phosphor was successfully synthesized, making it suitable for optoelectronic devices and thermal sensor applications.

Cited by 13 publications

References 60 publications

High-efficiency energy transfer in the strong orange-red-emitting phosphor CeO₂:Sm³⁺, Eu³⁺

High-efficiency energy transfer in the strong orange-red-emitting phosphor CeO₂:Sm³⁺, Eu³⁺

Judd–Ofelt Intensity Parameters and Optical Properties of Eu/Li Co‐Doped CeO₂ Phosphor

Review—Structural and Optical Interpretations on Phosphor-Based Optical Thermometry

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Multifunctional optical thermometry using dual-mode green emission of CaZrO3:Er/Yb/Mo perovskite phosphors

Abstract: High-sensor sensitivity and high green color purity based on the intense green dual-mode emission of CaZrO3:Er/Yb/Mo perovskite phosphor was successfully synthesized, making it suitable for optoelectronic devices and thermal sensor applications.

Cited by 13 publications

References 60 publications

High-efficiency energy transfer in the strong orange-red-emitting phosphor CeO2:Sm3+, Eu3+

High-efficiency energy transfer in the strong orange-red-emitting phosphor CeO2:Sm3+, Eu3+

Judd–Ofelt Intensity Parameters and Optical Properties of Eu/Li Co‐Doped CeO2 Phosphor

Review—Structural and Optical Interpretations on Phosphor-Based Optical Thermometry

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Multifunctional optical thermometry using dual-mode green emission of CaZrO₃:Er/Yb/Mo perovskite phosphors

High-efficiency energy transfer in the strong orange-red-emitting phosphor CeO₂:Sm³⁺, Eu³⁺

High-efficiency energy transfer in the strong orange-red-emitting phosphor CeO₂:Sm³⁺, Eu³⁺

Judd–Ofelt Intensity Parameters and Optical Properties of Eu/Li Co‐Doped CeO₂ Phosphor