Spirina A. V.
1, Solomonov V. I.
1, Makarova A. S.
1, Osipov V. V.
1, Shitov V. A.
1, Maksimov R. N.
1,21Institute of Electrophysics of the Ural Branch of the Russian Academy of Sciences, Yekaterinburg, Russia
2Ural Federal University after the first President of Russia B.N. Yeltsin, Yekaterinburg, Russia
Email: rasuleva@iep.uran.ru, plasma@iep.uran.ru, anniebubnova@mail.ru, osipov@iep.uran.ru, vlad@iep.uran.ru, roman.maksimov196@yandex.ru
The paper presents the research results of the luminescence of transparent mixed ceramics samples with the composition Ery:(ScxY1-x)2O3+2 mol.% ZrO2 at different scandium contents. Excitation of samples by laser diode radiation with a wavelength of 808 nm leads to up-conversion, as a result of which photoluminescence bands at the 4S3/2->4I15/2 (530-575 nm) and 4I11/2->4I15/2 (950-1050 nm) transitions appear in the visible and near IR regions of the spectrum. When excited by an electron beam with a duration of 2 ns with an average electron energy of 170 keV and a current density of 130 A/cm2, along with yellow-green luminescence, there are additional emission bands of erbium ions, corresponding to the 4F9/2->4I15/2 (640-720 nm) and 4S3/2->4I13/2 (840-900 nm) transitions. With increasing scandium content in the samples, a red shift and broadening of the long-wavelength components of all erbium luminescence bands are observed. Using kinetic measurements, the lifetimes of the observed emissive levels have been determined. Keywords pulsed cathodoluminescence, lifetime, up-conversion, erbium.
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