Сибирский федеральный университет

Тип публикации: статья из журнала

Год издания: 2020

Идентификатор DOI: 10.1016/j.optmat.2020.109843

Ключевые слова: Coherent scattering; Continuous wave lasers; Laser beams; Luminescence; Nanoparticles; Vaporization; Absolute quantum yields; Chromaticity coordinates; Coherent scattering region; Crystal-field-split; Hypersensitive transitions; Laser vaporization; Luminescence spectrum; Nanophosphors; Europium compounds, Photoluminescence of Eu3+; Monoclinic Y2O3:Eu nanophosphor; Laser vaporization

Аннотация: Europium doped Y2O3spherical nanoparticles with the diameter ~10 nmobtained via cw laser vaporization are shown to crystallize in monoclinic symmetry class (C2/m space group). The size of nanoparticles established via HRTEM coincides with coherent scattering region established by XRD. Luminescence spectrum in the vicinity of ultranarrow transition demonstrates three peaks consistent with three inequivalent positions of Eu3+ ion in monoclinic Y2O3 lattice. Hypersensitive transition dominates in the spectrum, admitting the lack of inversion symmetry at Cs sites occupied by Eu3+. The spectrum of hypersensitive transition is expanded to the red part of spectrum due intense transitions terminating at higher-lying components of crystal-field-split 7F2 energy level. Obtaining chromaticity coordinates (0.669, 0.331)and absolute quantum yield (~21%) is possible using red phosphor based on monoclinic Y2O3:Eu3+. © 2020 Elsevier B.V.

Журнал: Optical Materials

Выпуск журнала: Vol. 104

Номера страниц: 109843

ISSN журнала: 09253467

Издатель: Elsevier B.V.

• Kostyukov A.I. (Novosibirsk State University, Pirogova Str. 2, Novosibirsk, 630090, Russian Federation)
• Snytnikov V.N. (Novosibirsk State University, Pirogova Str. 2, Novosibirsk, 630090, Russian Federation, Boreskov Institute of CatalysisSB RAS, Lavrentieva Ave. 5, Novosibirsk, 630090, Russian Federation, Boreskov Institute of CatalysisSB RAS, Lavrentieva Ave. 5, Novosibirsk, 630090, Russian Federation)
• Snytnikov V.N. (Novosibirsk State University, Pirogova Str. 2, Novosibirsk, 630090, Russian Federation, Boreskov Institute of CatalysisSB RAS, Lavrentieva Ave. 5, Novosibirsk, 630090, Russian Federation, Boreskov Institute of CatalysisSB RAS, Lavrentieva Ave. 5, Novosibirsk, 630090, Russian Federation)
• Ishchenko A.V. (Novosibirsk State University, Pirogova Str. 2, Novosibirsk, 630090, Russian Federation, Boreskov Institute of CatalysisSB RAS, Lavrentieva Ave. 5, Novosibirsk, 630090, Russian Federation)
• Rakhmanova M.I. (Novosibirsk State University, Pirogova Str. 2, Novosibirsk, 630090, Russian Federation, Nikolaev Institute of Inorganic Chemistry SB RAS, Akad. Lavrentiev Ave. 3, Novosibirsk, 630090, Russian Federation)
• Molokeev M.S. (Kirensky Institute of Physics Federal Research Center KSC SB RAS, Krasnoyarsk, 660036, Russian Federation, Siberian Federal University, Krasnoyarsk, 660041, Russian Federation, Department of Physics, Far Eastern State Transport University, Khabarovsk, 680021, Russian Federation)
• Krylov A.S. (Kirensky Institute of Physics Federal Research Center KSC SB RAS, Krasnoyarsk, 660036, Russian Federation)
• Aleksandrovsky A.S. (Kirensky Institute of Physics Federal Research Center KSC SB RAS, Krasnoyarsk, 660036, Russian Federation, Department of Photonics and Laser Technology, Siberian Federal University, Krasnoyarsk, 660041, Russian Federation)

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