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- W3213364532 abstract "Colloidal nanocrystal scintillators hold great potential in fabricating large-area, flexible X-ray detectors for high-resolution X-ray imaging of highly curved, irregularly shaped objects. The synthesis of high-efficiency, high-stability nanoscintillators is of great importance for the development of X-ray imaging detectors. In this study, we develop a class of cerium (Ce 3+ )-sensitized core-shell nanoscintillators that are suitable for achieving flexible X-ray luminescence imaging. We demonstrate that an epitaxial growth of NaGdF 4 :Ce(60%) on the surface of NaGdF 4 :Eu(15%) nanoscintillators as a sensitization layer allows for enhancing X-ray-induced radioluminescence. We reveal that the enhancement of X-ray luminescence in nanoscintillators could be attributed to the synergistic effect of high-Z composition-induced X-ray absorption, Ce 3+ sensitization, and surface passivation to relieve energy quenching. By incorporating the nanoscintillators into a flexible elastomer of polydimethylsiloxane (PDMS), we demonstrate its utility in high-resolution flexible X-ray luminescence imaging. • A class of Ce 3+ -sensitized nanoscintillators with efficient X-ray luminescence were synthesized. • An energy transfer mechanism for X-ray luminescence in NaGdF 4 :Eu@NaGdF 4 :Ce core-shell nanoscintillators was proposed. • High-resolution flexible X-ray luminescence imaging was achieved by embedding nanoscintillators into a PDMS elastomer." @default.
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- W3213364532 date "2022-02-01" @default.
- W3213364532 modified "2023-10-16" @default.
- W3213364532 title "Flexible X-ray luminescence imaging enabled by cerium-sensitized nanoscintillators" @default.
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- W3213364532 doi "https://doi.org/10.1016/j.jlumin.2021.118589" @default.
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