Mechanical, photoluminescent properties and energy transfer mechanism of highly transparent (Y0.99−xGdxSm0.01)2O3 ceramics for scintillator applications

Zhang, Cong; Shi, Yanli; Wang, Xiuling; Qi, Jianqi; Lu, Tiecheng

doi:10.1016/j.jeurceramsoc.2023.10.022

Journal of the European Ceramic Society

2024

DOI: 10.1016/j.jeurceramsoc.2023.10.022

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Mechanical, photoluminescent properties and energy transfer mechanism of highly transparent (Y0.99−xGdxSm0.01)2O3 ceramics for scintillator applications

Cong Zhang,

Yanli Shi,

Xiuling Wang

et al.

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2024

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Influence of non-stoichiometric design concepts on the optical properties of Sm-doped Gd2Zr2O7 transparent ceramics

Zeng,

Zhang,

Teng

et al. 2024

Ceramics International

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Influence of non-stoichiometric design concepts on the optical properties of Sm-doped Gd2Zr2O7 transparent ceramics

Zeng,

Zhang,

Teng

et al. 2024

Ceramics International

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Highly transparent Ce:Nd:YAG ceramic with good light conversion capacity for solar-pumped solid-state lasers

Zheng,

Xie,

Zhou

et al. 2024

Opt. Express

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Developing a high quality ceramic laser gain medium for solar directly pumped solid state lasers is essential, and yet the light conversion efficiency of the gain media for solar pumping remains a challenge. In this study, Ce and Nd ions, co-doped YAG transparent ceramics with theoretical transmittance and stable Ce3+ valent state were developed, and revealed that the absorbed visible light and light conversion efficiency in Ce,Nd:YAG ceramics were 3.98 times and 1.34 times higher than those in widely reported Cr,Nd:YAG ceramics, respectively. A concentration matching principle between Ce3+ and Nd3+ ions in YAG was established, and a higher Nd3+ ion doping concentration with a relatively low Ce3+ concentration was favorable to improve both the light conversion efficiency and emission intensity at 1064 nm of Ce,Nd:YAG ceramics. Energy transfer efficiency from Ce3+ to Nd3+ of the 0.3 at.%Ce,1.5at.%Nd:YAG ceramic reached as high as 61.71% at room temperature. Surprisingly, it was further promoted to 64.31% at a higher temperature of 473 K. More excited electrons at the upper energy level of Ce3+ ion under the high temperature accounted for this novel phenomenon. This study proposes a new design strategy of gain materials for solar directly pumped solid state lasers.

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Designing highly transparent cerium doped Y ₂O ₃ ceramics with high mechanical and thermal properties for UV-shielding in extreme conditions

Zhang,

Qi,

Zhou

et al. 2024

Journal of Advanced Ceramics

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Ultraviolet (UV) radiation poses risks to both human health and organics. In response to the urgent demand for UV-shielding across various applications, extensive endeavors have been dedicated to developing UV-shielding materials, spanning from wideband gap semiconductors to organo-inorganic composite films. However, existing UV J u s t A c c e p t e d shielding materials, though suitable for daily use, fall short of meeting the demands of extreme conditions. In this work, we incorporated CeO2 as a UV absorber into Y2O3 transparent ceramics for UV-shielding. The effect of CeO2 concentration on the optical, mechanical, and thermal properties of Y2O3 ceramics was systematically investigated. The findings indicate that CeO2 serves not only as UV absorber but also as an effective sintering aid for Y2O3 transparent ceramics. 5 at% Ce-doped Y2O3 transparent ceramics exhibit the optimal optical quality, with in-line transmittance ~77% at 800 nm. The introduction of Ce shifted the UV cutoff edge of Y2O3 transparent ceramics from 250 nm to 375 nm, attributed to visible band absorption of Ce 4+ . The shift grants UV shielding capabilities to Y2O3 transparent ceramics, resulting in 100% shielding for UVC (100-280 nm) and UVB (280-320 nm), and ~95% for UVA (320-400 nm). Service stability (optical properties) under various corrosive conditions (acid, alkali, UV irradiation, and high temperature) was investigated, confirming the excellent stability of this transparent ceramic UV-shielding material. A comparison of the performance parameters of transparent ceramics with traditional UV shielding materials such as glasses, films, and coatings was conducted. Our work provides innovative design concepts and an effective solution for UV-shielding materials for extreme conditions.

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Mechanical, photoluminescent properties and energy transfer mechanism of highly transparent (Y0.99−xGdxSm0.01)2O3 ceramics for scintillator applications

Cited by 3 publications

References 50 publications

Influence of non-stoichiometric design concepts on the optical properties of Sm-doped Gd2Zr2O7 transparent ceramics

Influence of non-stoichiometric design concepts on the optical properties of Sm-doped Gd2Zr2O7 transparent ceramics

Highly transparent Ce:Nd:YAG ceramic with good light conversion capacity for solar-pumped solid-state lasers

Designing highly transparent cerium doped Y ₂O ₃ ceramics with high mechanical and thermal properties for UV-shielding in extreme conditions

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Mechanical, photoluminescent properties and energy transfer mechanism of highly transparent (Y0.99−xGdxSm0.01)2O3 ceramics for scintillator applications

Cited by 3 publications

References 50 publications

Influence of non-stoichiometric design concepts on the optical properties of Sm-doped Gd2Zr2O7 transparent ceramics

Influence of non-stoichiometric design concepts on the optical properties of Sm-doped Gd2Zr2O7 transparent ceramics

Highly transparent Ce:Nd:YAG ceramic with good light conversion capacity for solar-pumped solid-state lasers

Designing highly transparent cerium doped Y 2O 3 ceramics with high mechanical and thermal properties for UV-shielding in extreme conditions

Contact Info

Product

Resources

About

Designing highly transparent cerium doped Y ₂O ₃ ceramics with high mechanical and thermal properties for UV-shielding in extreme conditions