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Spherical phosphors Lu₂O₃:Eu coated with SiO₂ shells

Spherical phosphors Lu₂O₃:Eu coated with SiO₂ shells

Amorphous SiO₂ coatings of controlled thickness ranging from 10 to 100 nm have been fixed onto submicron-sized Lu₂O₃:Eu spheres for a first time by Stober method. The morphology, nanostructure, and chemical composition of the resultant Lu₂O₃:Eu/SiO₂ coreshell heteroparticles have been studied. A con...

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Main Author: Yermolayeva, Yu.V.
Format: Article
Language:English
Published: НТК «Інститут монокристалів» НАН України 2009
Series:Functional Materials
Subjects:
Technology
Online Access:http://dspace.nbuv.gov.ua/handle/123456789/138948
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spelling irk-123456789-1389482018-06-20T03:03:49Z Spherical phosphors Lu₂O₃:Eu coated with SiO₂ shells Yermolayeva, Yu.V. Technology Amorphous SiO₂ coatings of controlled thickness ranging from 10 to 100 nm have been fixed onto submicron-sized Lu₂O₃:Eu spheres for a first time by Stober method. The morphology, nanostructure, and chemical composition of the resultant Lu₂O₃:Eu/SiO₂ coreshell heteroparticles have been studied. A considerable luminescence decrease was observed for Lu₂O₃:Eu spheres coated with SiO₂ shell as compared to the uncoated phosphors, due to the features of Lu₂O₃:Eu sphere crystallization in a volume bounded by the SiO₂ shell. Вперше аморфні покриття SiO₂ різної товщини у межах 10-100 нм отримано на сферичних субмікрочастинках Lu₂O₃:Eu методом Штобера. Досліджено морфологію, наноструктуру та хімічний склад отриманих гетерочастинок Lu₂O₃:Eu/SiO₂ типу "ядрооболонка". Значне зниження інтенсивності люмінесценції спостерігалося у гетерочастинках Lu₂O₃:Eu/SiO₂ у порівнянні з вихідними частинками Lu₂O₃:Eu, що пов'язано з особливостями кристалізації сфер Lu₂O₃:Eu в обмеженому оболонкою SiO₂ об'ємі. Впервые аморфные покрытия SiO₂контролированной толщины в пределах 10-100 нм получены на сферических субмикрочастицах Lu₂O₃:Eu методом Штобера. Исследованы морфология, наноструктура и химический состав полученных гетерочастиц "ядро-оболочка" Lu₂O₃:Eu/SiO₂. Значительное снижение интенсивности люминесценции наблюдалось в Lu₂O₃:Eu/SiO₂ гетерочастицах по сравнению с исходными Lu₂O₃:Eu частицами, что связано с особенностями кристаллизации Lu₂O₃:Eu сфер в ограниченном оболочкой SiO₂ объеме. 2009 Article Spherical phosphors Lu₂O₃:Eu coated with SiO₂ shells // Yu.V. Yermolayeva // Functional Materials. — 2009. — Т. 16, № 4. — С. 508-512. — Бібліогр.: 15 назв. — англ. 1027-5495 http://dspace.nbuv.gov.ua/handle/123456789/138948 en Functional Materials НТК «Інститут монокристалів» НАН України
institution Digital Library of Periodicals of National Academy of Sciences of Ukraine
collection DSpace DC
language English
topic Technology
Technology
spellingShingle Technology
Technology
Yermolayeva, Yu.V.
Spherical phosphors Lu₂O₃:Eu coated with SiO₂ shells
Functional Materials
description Amorphous SiO₂ coatings of controlled thickness ranging from 10 to 100 nm have been fixed onto submicron-sized Lu₂O₃:Eu spheres for a first time by Stober method. The morphology, nanostructure, and chemical composition of the resultant Lu₂O₃:Eu/SiO₂ coreshell heteroparticles have been studied. A considerable luminescence decrease was observed for Lu₂O₃:Eu spheres coated with SiO₂ shell as compared to the uncoated phosphors, due to the features of Lu₂O₃:Eu sphere crystallization in a volume bounded by the SiO₂ shell.
format Article
author Yermolayeva, Yu.V.
author_facet Yermolayeva, Yu.V.
author_sort Yermolayeva, Yu.V.
title Spherical phosphors Lu₂O₃:Eu coated with SiO₂ shells
title_short Spherical phosphors Lu₂O₃:Eu coated with SiO₂ shells
title_full Spherical phosphors Lu₂O₃:Eu coated with SiO₂ shells
title_fullStr Spherical phosphors Lu₂O₃:Eu coated with SiO₂ shells
title_full_unstemmed Spherical phosphors Lu₂O₃:Eu coated with SiO₂ shells
title_sort spherical phosphors lu₂o₃:eu coated with sio₂ shells
publisher НТК «Інститут монокристалів» НАН України
publishDate 2009
topic_facet Technology
url http://dspace.nbuv.gov.ua/handle/123456789/138948
citation_txt Spherical phosphors Lu₂O₃:Eu coated with SiO₂ shells // Yu.V. Yermolayeva // Functional Materials. — 2009. — Т. 16, № 4. — С. 508-512. — Бібліогр.: 15 назв. — англ.
series Functional Materials
work_keys_str_mv AT yermolayevayuv sphericalphosphorslu2o3eucoatedwithsio2shells
first_indexed 2023-10-18T21:17:58Z
last_indexed 2023-10-18T21:17:58Z
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