Реферат: Large-sized, high optical quality Gd2O3 single crystals were grown from a solution at T = 1145 °C using Czochralski method. XRD analysis showed that the crystal structure is characterized by a single cubic (bixbyite) phase (c-phase). The absorption spectra and luminescence properties of Gd2O3 doped with Eu3+ and Tb3+ impurity ions were studied. The absorption spectrum of Gd2O3:Eu in the short wavelength region is mainly due to charge transfer transitions from O2− to Eu3+ (240–290 nm), which overlap with the Urbach tail of the host-absorption. Additionally, electronic transitions in Eu3+ (320–540 nm) and Gd3+ (245–315 nm) lanthanide ions contribute to the absorption spectrum. Intraconfigurational radiative f – f transitions in impurity ions are clearly observed upon both UV- and X-ray excitations. However, 6PJ → 8S7/2 radiative transitions in Gd3+ ions are completely unobservable. Based on the obtained spectroscopic data, the energy positions of the ground state of all di- and trivalent lanthanide ions, as well as the energies of intraconfigurational f – f and interconfigurational f – d electronic transitions in Gd2O3 crystals with a cubic structure, are calculated. The proposed electronic energy diagram is used to discuss efficient energy transfer between lanthanide ions.

Библиографическая ссылка: Pustovarov V.A. , Ogorodnikov I.N. , Nikolaev R.E. , Tarasenko M.S. , Tavrunov D.A. , Trifonov V.A. , Naumov N.G.
Locations of the energy levels of lanthanide ions in Gd2O3 single crystals
Optical Materials. 2023. V.143. 114265 :1-8. DOI: 10.1016/j.optmat.2023.114265 WOS Scopus OpenAlex

Даты:

Поступила в редакцию:	19 июн. 2023 г.
Принята к публикации:	15 авг. 2023 г.
Опубликована в печати:	19 авг. 2023 г.
Опубликована online:	19 авг. 2023 г.

Идентификаторы БД:

Web of science:	WOS:001065014700001
Scopus:	2-s2.0-85168141166
OpenAlex:	W4386006391

Цитирование в БД:

БД	Цитирований
OpenAlex	2
Web of science	2

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