Colloidal KLu3F10:Tb3+ persistent luminescence nanocrystal based flexible detectors for 3D X-ray imaging

Xie, Fei; Chen, Dongxun; Zhang, Yi; Lv, Xulong; Chen, Xin; Sun, Kangning; Liang, Yanjie

doi:10.1039/d3tc03409g

J. Mater. Chem. C

2023

DOI: 10.1039/d3tc03409g

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Colloidal KLu₃F₁₀:Tb³⁺ persistent luminescence nanocrystal based flexible detectors for 3D X-ray imaging

Fei Xie,

Dongxun Chen,

Yi Zhang

et al.

Abstract: Scintillator-based X-ray detection and imaging have demonstrated significant potential in the domains of industrial safety inspection and medical diagnosis. However, developing X-ray detectors capable of effectively imaging three-dimensional objects with...

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2024

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Cited by 4 publications

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Heterovalent Co‐Doped LiLuF₄ Composite Flexible Films as Persistent Luminescence Scintillator for X‐Ray High‐Resolution Extension Imaging

Lu,

Xu,

et al. 2024

Advanced Optical Materials

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Scintillators with high light yield, spatial resolution, and detection sensitivity are desirable for X‐ray imaging. Howerer, it remains challenging to improve the light yield and radiation detection capability of alkali metal rare‐earth fluoride (ALnF4). Herein, a type of Cu2+ ion heterovalent co‐doped LiLuF4:Tb,Cu microcrystalline scintillation material with high light yield, persistent, and thermostimulated luminescence is obtained by defect engineering. The heterovalent codoping strategy not only increases the radioluminescence (RL) intensity, but also introduces more carrier traps in the material to enhance the long‐afterglow and thermoluminescence intensity of LiLuF4:Tb microcrystals. After doping of 3 mol% Cu2+ ions, the RL efficiency is increased by 88.61%, and the X‐ray detection limit of LiLuF4:Tb,Cu reaches 2.7928 nGy·s‒1. This detectivity is considerably lower than the medical imaging requirements (5.5 µGy·s‒1). Furthermore, a large‐area flexible scintillation film of dimensions 30 × 30 cm2 is prepared to achieve high spatial resolution X‐ray imaging of 22 LP mm−1@MTF(modulation transfer function) = 0.2. Besides, this flexible film enables X‐ray imaging of curved objects and stores optical information for >48 h. This work provides a paradigm for improving the RL intensity and X‐ray detection sensitivity of alkali rare‐earth fluorides by crystal defect engineering, and enriches X‐ray high resolution extended imaging applications.

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Heterovalent Co‐Doped LiLuF₄ Composite Flexible Films as Persistent Luminescence Scintillator for X‐Ray High‐Resolution Extension Imaging

Lu,

Xu,

et al. 2024

Advanced Optical Materials

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Inorganic metal oxide material BaSiO3:Eu2+ for convenient 3D X-ray imaging

Shen,

Zhang,

Jin

et al. 2024

Journal of Luminescence

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Charge carrier trapping management in Bi3+ and lanthanides doped Li(Sc,Lu)GeO4 for x-ray imaging, anti-counterfeiting, and force recording

Lyu,

Dorenbos

2024

Applied Physics Reviews

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Discovering energy storage materials with rationally controlled trapping and de-trapping of electrons and holes upon x-rays, UV-light, or mechanical force stimulation is challenging. Such materials enable promising applications in various fields, for instance in multimode anti-counterfeiting, x-ray imaging, and non-real-time force recording. In this work, photoluminescence spectroscopy, the refined chemical shift model, and thermoluminescence studies will be combined to establish the vacuum referred binding energy (VRBE) diagrams for the LiSc1−xLuxGeO4 family of compounds containing the energy level locations of Bi2+, Bi3+, and the lanthanides. The established VRBE diagrams are used to rationally develop Bi3+ and lanthanides doped LiSc1−xLuxGeO4 storage phosphors and to understand trapping and de-trapping processes of charge carriers with various physical excitation means. The thermoluminescence intensity of x-ray irradiated LiSc0.25Lu0.75GeO4:0.001Bi3+,0.001Eu3+ is about two times higher than that of the state-of-the-art x-ray storage phosphor BaFBr(I):Eu2+. Particularly, a force induced charge carrier storage phenomenon appears in Eu3+ co-doped LiSc1−xLuxGeO4. Proof-of-concept non-real-time force recording, anti-counterfeiting, and x-ray imaging applications will be demonstrated. This work not only deepens our understanding of the capturing and de-trapping processes of electrons and holes with various physical excitation sources, but can also trigger scientists to rationally discover new storage phosphors by exploiting the VRBEs of bismuth and lanthanide levels.

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Colloidal KLu₃F₁₀:Tb³⁺ persistent luminescence nanocrystal based flexible detectors for 3D X-ray imaging

Abstract: Scintillator-based X-ray detection and imaging have demonstrated significant potential in the domains of industrial safety inspection and medical diagnosis. However, developing X-ray detectors capable of effectively imaging three-dimensional objects with...

Cited by 4 publications

References 55 publications

Heterovalent Co‐Doped LiLuF₄ Composite Flexible Films as Persistent Luminescence Scintillator for X‐Ray High‐Resolution Extension Imaging

Heterovalent Co‐Doped LiLuF₄ Composite Flexible Films as Persistent Luminescence Scintillator for X‐Ray High‐Resolution Extension Imaging

Inorganic metal oxide material BaSiO3:Eu2+ for convenient 3D X-ray imaging

Charge carrier trapping management in Bi3+ and lanthanides doped Li(Sc,Lu)GeO4 for x-ray imaging, anti-counterfeiting, and force recording

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Colloidal KLu3F10:Tb3+ persistent luminescence nanocrystal based flexible detectors for 3D X-ray imaging

Abstract: Scintillator-based X-ray detection and imaging have demonstrated significant potential in the domains of industrial safety inspection and medical diagnosis. However, developing X-ray detectors capable of effectively imaging three-dimensional objects with...

Cited by 4 publications

References 55 publications

Heterovalent Co‐Doped LiLuF4 Composite Flexible Films as Persistent Luminescence Scintillator for X‐Ray High‐Resolution Extension Imaging

Heterovalent Co‐Doped LiLuF4 Composite Flexible Films as Persistent Luminescence Scintillator for X‐Ray High‐Resolution Extension Imaging

Inorganic metal oxide material BaSiO3:Eu2+ for convenient 3D X-ray imaging

Charge carrier trapping management in Bi3+ and lanthanides doped Li(Sc,Lu)GeO4 for x-ray imaging, anti-counterfeiting, and force recording

Contact Info

Product

Resources

About

Colloidal KLu₃F₁₀:Tb³⁺ persistent luminescence nanocrystal based flexible detectors for 3D X-ray imaging

Heterovalent Co‐Doped LiLuF₄ Composite Flexible Films as Persistent Luminescence Scintillator for X‐Ray High‐Resolution Extension Imaging

Heterovalent Co‐Doped LiLuF₄ Composite Flexible Films as Persistent Luminescence Scintillator for X‐Ray High‐Resolution Extension Imaging