Please use this identifier to cite or link to this item: https://dspace.ncfu.ru/handle/20.500.12258/14782
Title: Diamond composite with embedded YAG:Ce nanoparticles as a source of fast X-ray luminescence in the visible and near-IR range
Authors: Vakalov, D. S.
Вакалов, Д. С.
Tarala, V. A.
Тарала, В. А.
Keywords: Chemical vapor deposition;Yttrium-aluminum garnet;X-ray luminescence;Photoluminescence;Diamond composites;X ray detectors
Issue Date: 2021
Publisher: Elsevier Ltd
Citation: Sedov, V., Kuznetsov, S., Kamenskikh, I., Martyanov, A., Vakalov, D., Savin, S., Rubtsova, E., Tarala, V., Omelkov, S., Kotlov, A., Ralchenko, V., Konov, V. Diamond composite with embedded YAG:Ce nanoparticles as a source of fast X-ray luminescence in the visible and near-IR range // Carbon. - 2021. - Volume 174. - Pages 52-58
Series/Report no.: Carbon
Abstract: The diamond composite materials with embedded yttrium-aluminum garnet doped with cerium (YAG:Ce) nanoparticles have been produced by microwave plasma-assisted chemical vapor deposition (CVD). Nanoparticles were synthesized by co-precipitation from an aqueous solution while CVD diamond served as the transparent matrix with high thermal conductivity, hardness, and resistivity to radiation damage. The composite films show high-intensity X-ray luminescence (XRL) with a broad band peaking around the wavelength of 550 nm (5d → 4f transition in Ce3+ ion), and a narrow peak of silicon-vacancy (Si–V) centers at 738 nm. The characteristic decay time was measured at τCe < 50 ns for cerium emission and at τSiV∼1 ns for Si–V centers. Excitation spectra of both luminescence types measured near yttrium K-edge (17.1 keV) show a strong correlation, attributed to the excitation of Si–V luminescence by photoelectrons ejected from YAG:Ce nanoparticles. The discovered phenomenon suggests a new way to control X-ray visualization by luminescent diamond composites for fast X-ray detectors and screens
URI: http://hdl.handle.net/20.500.12258/14782
Appears in Collections:Статьи, проиндексированные в SCOPUS, WOS

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