Diamond composite with embedded YAG:Ce nanoparticles as a source of fast X-ray luminescence in the visible and near-IR range

Sedov, V.; Kuznetsov, S.; Kamenskikh, I.; Martyanov, A.; Vakalov, D.; Savin, S.; Rubtsova, E.; Tarala, V.; Omelkov, S.; Kotlov, A.; Ralchenko, V.; Konov, V.

Статья опубликована в высокорейтинговом журнале

Информация о цитировании статьи получена из Web of Science, Scopus
Статья опубликована в журнале из списка Web of Science и/или Scopus
Дата последнего поиска статьи во внешних источниках: 8 апреля 2021 г.

Авторы: Sedov V., Kuznetsov S., Kamenskikh I., Martyanov A., Vakalov D., Savin S., Rubtsova E., Tarala V., Omelkov S., Kotlov A., Ralchenko V., Konov V.
Журнал: Carbon
Том: 174
Год издания: 2020
Издательство: Pergamon Press Ltd.
Местоположение издательства: United Kingdom
Первая страница: 52
Последняя страница: 58
DOI: 10.1016/j.carbon.2020.12.020
Аннотация: 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.
Добавил в систему: Каменских Ирина Александровна

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Diamond composite with embedded YAG:Ce nanoparticles as a source of fast X-ray luminescence in the visible and near-IR rangeстатья

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