Lu <sub>3</sub> Ga <sub>5</sub> O <sub>12</sub> :Eu <sup>3+</sup> Garnet Phosphor for X-ray Delayed Imaging

X-ray-excited persistent luminescence (XEPL) phosphors have garnered considerable attention in flexible X-ray delayed imaging. However, the poor chemical stability of the corresponding phosphors limits their practical applications. In this paper, a garnet phosphor, Lu<sub>3</sub>Ga<sub>5</sub>O<sub>12</sub>:Eu<sup>3+</sup> (LGG:Eu<sup>3+</sup>), with excellent chemical stability and outstanding XEPL performance, is reported. After 50 cycles of X-ray radiation, there is no significant decrease in the luminescence intensity of LGG:Eu<sup>3+</sup>. In addition, the LGG:Eu<sup>3+</sup> afterglow phosphor has shallow traps with a depth of 0.91 eV and an afterglow duration exceeding 50 min. A flexible film composed of LGG:Eu<sup>3+</sup> and polydimethylsiloxane (PDMS) was prepared for X-ray delayed imaging. Our findings prove that LGG:Eu<sup>3+</sup> is a chemically stable XEPL phosphor for flexible X-ray delayed imaging techniques.

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Publication Details

Journal
Inorganic Chemistry
Published
2025-12-12
DOI
https://doi.org/10.1021/acs.inorgchem.5c05123
Primary Topic
Luminescence Properties of Advanced Materials
Type
article
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article

Lu 3 Ga 5 O 12 :Eu 3+ Garnet Phosphor for X-ray Delayed Imaging

Hanyou Hu, Huajun Wu, Quansheng Liu, Zhendong Hao et al.
Inorganic Chemistry
Luminescence Properties of Advanced Materials
article

Lu 3 Ga 5 O 12 :Eu 3+ Garnet Phosphor for X-ray Delayed Imaging

Hanyou Hu, Huajun Wu, Quansheng Liu, Zhendong Hao, Hao Wu, Shang Wang, Liangliang Zhang, Dandan Wang, Qi Tong, Jiajun Xu
article en

Abstract

X-ray-excited persistent luminescence (XEPL) phosphors have garnered considerable attention in flexible X-ray delayed imaging. However, the poor chemical stability of the corresponding phosphors limits their practical applications. In this paper, a garnet phosphor, Lu<sub>3</sub>Ga<sub>5</sub>O<sub>12</sub>:Eu<sup>3+</sup> (LGG:Eu<sup>3+</sup>), with excellent chemical stability and outstanding XEPL performance, is reported. After 50 cycles of X-ray radiation, there is no significant decrease in the luminescence intensity of LGG:Eu<sup>3+</sup>. In addition, the LGG:Eu<sup>3+</sup> afterglow phosphor has shallow traps with a depth of 0.91 eV and an afterglow duration exceeding 50 min. A flexible film composed of LGG:Eu<sup>3+</sup> and polydimethylsiloxane (PDMS) was prepared for X-ray delayed imaging. Our findings prove that LGG:Eu<sup>3+</sup> is a chemically stable XEPL phosphor for flexible X-ray delayed imaging techniques.

Inorganic ChemistryVol. 64(51)
Changchun University of Science and Technology (CN), Ministry of Education of the People's Republic of China (CN), Jilin Normal University (CN), Chinese Academy of Sciences (CN), Changchun Institute of Optics, Fine Mechanics and Physics (CN), Ministry of Education (BD), Lumtec (Taiwan) (TW), University of Chinese Academy of Sciences (CN)
Openalex Percentile: Top 67%
Luminescence Properties of Advanced Materials
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