New optical ceramics: High-entropy sesquioxide X2O3 multi-wavelength emission phosphor transparent ceramics

Zhang, Guangran; Milisavljevic, Iva; Grzeszkiewicz, Karina; Stachowiak, P.; Hreniak, D.; Wu, Yiquan

doi:10.1016/j.jeurceramsoc.2021.01.027

Cited by 21 publications

(19 citation statements)

References 34 publications

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“…Phonon scattering leads to a decrease in thermal conductivity. As in the previously mentioned high‐entropy transparent (Lu 0.2 Gd 0.2 Y 0.2 Yb 0.2 Dy 0.2 ) 2 O 3 sesquioxide, 27% decrease in thermal conductivity (3.5 W/mK) at room temperature was seen when compared to single species sesquioxide prepared under the same condition 10 . Similar situation was also reported in (Y 0.2 Yb 0.2 Lu 0.2 Eu 0.2 Er 0.2 ) 3 Al 5 O 12 ceramic, measured thermal conductivity is 3.81 W/mK at 300 K, 18 % lower than that of Yb 3 Al 5 O 12 143 .…”

Section: Advantages Of High‐entropy Transparent Ceramicssupporting

confidence: 72%

“…With a Tm 3+ /Yb 3+ pair engineered into these high‐entropy transparent sesquioxide ceramics, the functionality of up‐conversion emission could be realized 9 . Another high‐entropy transparent (Lu 0.2 Gd 0.2 Y 0.2 Yb 0.2 Dy 0.2 ) 2 O 3 ceramic was also developed to demonstrate the feasibility and flexibility of designing this stable high‐entropy material 10 . It is believed that with careful design, high‐entropy transparent sesquioxide ceramics could be good candidates for applications including lasers with broader emission bands and shorter pulses, scintillators with faster responses, and magneto‐optical materials compatible with commercially available single crystals.…”

Section: X2o3 Sesquioxide Ceramicsmentioning

confidence: 99%

“…Zhang et al. fabricated (Lu 0.2 Gd 0.2 Y 0.2 Yb 0.2 Dy 0.2 ) 2 O 3 and (Lu 0.2 Y 0.395 Gd 0.2 Yb 0.2 Tm 0.05 ) 2 O 3 high‐entropy transparent sesquioxide ceramics by vacuum sintering 9,10 . The latter was the first reported optical functional high‐entropy ceramic material to show up‐conversion properties.…”

Section: Introductionmentioning

confidence: 99%

“…(B) (La 0.2 Nd 0.2 Sm 0.2 Gd 0.2 Yb 0.2 ) 2 Zr 2 O 7 fluorite‐deficient and ordered pyrochlore ceramics 8 . (C) (Lu 0.2 Gd 0.2 Y 0.2 Yb 0.2 Dy 0.2 )2O 3 and (Lu 0.2 Y 0.395 Gd 0.2 Yb 0.2 Tm 0.05 ) 2 O 3 sesquioxide ceramics 9,10 . Reproduced with permission…”

Section: Introductionmentioning

confidence: 99%

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High‐entropy transparent ceramics: Review of potential candidates and recently studied cases

Zhang

2021

Int J Applied Ceramic Tech

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High‐entropy ceramics have been widely explored and extensively studied since the first demonstration of the configuration entropy stabilized reversible transitions between multiple and single phases by Rost et al. in 2015. Most of the current research on high‐entropy ceramics has focused on properties like thermal conductivity, thermoelectricity, structures, and others. Some recent studies have extended the high‐entropy concept to the field of transparent ceramics. We reviewed these papers and proposed four potential ceramics groups for high‐entropy transparent ceramics including fluoride ceramics, fluorite‐deficient and/or ordered pyrochlore A2B2O7 ceramics, garnet ceramics, and sesquioxide ceramics. In this article, we review ceramic powder synthesis, the fabrication of transparent ceramics, high‐entropy ceramics, and limited cases of high‐entropy transparent ceramics for each category. High‐entropy transparent ceramics with diverse compositions and structures will provide more possibilities for functional transparent ceramics in the future.

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Section: Advantages Of High‐entropy Transparent Ceramicssupporting

confidence: 72%

Section: X2o3 Sesquioxide Ceramicsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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High‐entropy transparent ceramics: Review of potential candidates and recently studied cases

Zhang

2021

Int J Applied Ceramic Tech

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“…Figure 1(d) depicts the photoluminescence (PL) spectra of DCNPs excited at 900 nm, indicating that the whole samples of DCNPs emitted a broad downconversion infrared emission corresponding to 2 F 5/2 ⟶ 2 F 7/2 transitions of trivalent ytterbium ions. [24] e DCNPs possessed a strongest down-conversion infrared emission when the ytterbium ion doping concentration was 5%. Additionally, the infrared emission was multimodal at possible 976 nm, 986 nm, 993 nm, and 1025 nm.…”

Section: Morphology and Structure Analysis Of Dcnpsmentioning

confidence: 99%

A Feasible and Facile Method for the Anticounterfeiting of Down Fiber

Jin

Gao

Yang

2021

Advances in Materials Science and Engineering

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In order to prevent counterfeiting of down fiber from consumers, rare earth fluorescent materials are developed in the field of material identification and anticounterfeiting. Herein, the development of verifiable down fiber based on infrared excitation-infrared emission was described. A novel method was approached to prepare security down fiber, which involved modification of down-conversion nanoparticles (DCNPs) by sulfonic groups and self-assembly onto down fiber through electrostatic force. DCNPs were successfully prepared from ytterbium-deposited NaYF4 nanoparticles using a complexation precipitation approach, in which the trivalent ytterbium ions served as the luminescent center. Sulfonic down-conversion nanoparticles (SO3-SiO2@DCNPs) were fabricated by the hydrolysis of 3-mercaptopropyl triethoxysilane (MPTES) and next oxidation to enhance the combination of the DCNPs with down fiber. The synthesis of DCNPs and SO3-SiO2@DCNPs and its pendant to down were confirmed by XRD, SEM, XPS, FT-IR, Zeta potential meter, and PL, which revealed the presence of DCNPs in the size average 86 nm. The obtained DCNPs and security down fiber were launching an invisible red-shifted emission of 930∼1080 nm (corresponding to the 2F5/2 ⟶ 2F7/2 transitions in Yb3+). After washing, the infrared emission of security down fiber was evaluated and proved to be effective with fine results, which showed its potential application in the field of security.

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Structural and Optical Properties of High Entropy (La,Lu,Y,Gd,Ce)AlO₃ Perovskite Thin Films

Corey

Zhang

et al. 2022

Advanced Science

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Mixtures of Ce-doped rare-earth aluminum perovskites are drawing a significant amount of attention as potential scintillating devices. However, the synthesis of complex perovskite systems leads to many challenges. Designing the A-site cations with an equiatomic ratio allows for the stabilization of a single-crystal phase driven by an entropic regime. This work describes the synthesis of a highly epitaxial thin film of configurationally disordered rare-earth aluminum perovskite oxide (La 0.2 Lu 0.2 Y 0.2 Gd 0.2 Ce 0.2 )AlO 3 and characterizes the structural and optical properties. The thin films exhibit three equivalent epitaxial domains having an orthorhombic structure resulting from monoclinic distortion of the perovskite cubic cell. An excitation of 286.5 nm from Gd 3+ and energy transfer to Ce 3+ with 405 nm emission are observed, which represents the potential for high-energy conversion. These experimental results also offer the pathway to tunable optical properties of high-entropy rare-earth epitaxial perovskite films for a range of applications.

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New optical ceramics: High-entropy sesquioxide X2O3 multi-wavelength emission phosphor transparent ceramics

Cited by 21 publications

References 34 publications

High‐entropy transparent ceramics: Review of potential candidates and recently studied cases

High‐entropy transparent ceramics: Review of potential candidates and recently studied cases

A Feasible and Facile Method for the Anticounterfeiting of Down Fiber

Structural and Optical Properties of High Entropy (La,Lu,Y,Gd,Ce)AlO₃ Perovskite Thin Films

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New optical ceramics: High-entropy sesquioxide X2O3 multi-wavelength emission phosphor transparent ceramics

Cited by 21 publications

References 34 publications

High‐entropy transparent ceramics: Review of potential candidates and recently studied cases

High‐entropy transparent ceramics: Review of potential candidates and recently studied cases

A Feasible and Facile Method for the Anticounterfeiting of Down Fiber

Structural and Optical Properties of High Entropy (La,Lu,Y,Gd,Ce)AlO3 Perovskite Thin Films

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Product

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Structural and Optical Properties of High Entropy (La,Lu,Y,Gd,Ce)AlO₃ Perovskite Thin Films