Role of the Eu3+ Distribution on the Properties of b-Ca3(PO4)2 Phosphors: Structural, Luminescent, and 151Eu Mössbauer Spectroscopy Study of Ca9.5–1.5xMgEux(PO4)7

Deyneko, D.V.; Spassky, D.A.; Morozov, V.A.; Aksenov, S.M.; Kubrin, S.P.; Molokeev, M.S.; Lazoryak, B.I.

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: 29 апреля 2021 г.

Авторы: Deyneko Dina V., Spassky Dmitry A., Morozov Vladimir A., Aksenov Sergey M., Kubrin Stanislav P., Molokeev Maxim S., Lazoryak Bogdan I.
Журнал: Inorganic Chemistry
Том: 60
Год издания: 2021
Издательство: American Chemical Society
Местоположение издательства: United States
Первая страница: 3961
Последняя страница: 3971
DOI: 10.1021/acs.inorgchem.0c03813
Аннотация: The series of β-Ca3(PO4)2-type phosphors Ca9.5−1.5xMgEux(PO4)7 were synthesized by a solid-state route. Observation of the proper Eu3+ ion distribution in the Ca9.5Mg-(PO4)7 host matrix was made by a direct method using 151Eu Mössbauer spectroscopy in combination with X-ray analysis and dielectric and luminescent spectroscopy. The photoluminescence properties were studied in detail. The samples exhibit an exceptionally narrow-band red emission according to the dominant 5D0 → 7F2 transition and fulfill the industrial requirements for high-energy-efficiency red phosphors. The contribution of Eu3+ ions in different crystal sites to the luminescent properties is discussed in detail. The difference of the excitation of Eu3+ in the M1 and M2 sites was revealed by photoluminescence excitation spectra in accordance with structure refinement. The temperature dependence of the luminescence intensity was studied. Different tendencies in the thermal behavior of emission lines allow one to consider the studied compounds as phosphors suitable for luminescence thermometry. The measured quantum yield for Ca9.5−1.5xMgEux(PO4)7 shows excellent results and reaches 63%.
Добавил в систему: Дейнеко Дина Валерьевна

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Role of the Eu3+ Distribution on the Properties of b-Ca3(PO4)2 Phosphors: Structural, Luminescent, and 151Eu Mössbauer Spectroscopy Study of Ca9.5–1.5xMgEux(PO4)7статья

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