Please use this identifier to cite or link to this item: http://essuir.sumdu.edu.ua/handle/123456789/37220
Title: Optically Detected Effect of Size on the Oxygen Vacancies Concentration in Cerium Oxide Nanocrystals
Authors: Maksimchuk, P.O.
Masalov, A.A.
Malyukin, Yu.V.
Keywords: Luminescence spectroscopy
Cerium oxide nanoparticles
Oxygen vacancies
Issue Year: 2014
Publisher: Sumy State University
Citation: Proc. NAP 3, 02NAESF05 (2014)
Abstract: In this work effect of the size on the oxygen vacancies concentration in cerium oxide nanocrystals have been investigated by means of luminescence spectroscopy techniques. For determination of changes of oxygen stoichiometry intensity of 5d-4f luminescence of Ce3+ ions were used. It was shown that for CeO2 nanocrystals decrease of the size from 50 nm to 2 nm manifests itself in 8 times increase of the band intensity associated with vacancy-stabilized Ce3+ ions. The same effects have been observed at atmosphere variation from oxidizing to reducing and are connected with significant increase of concentration of oxygen vacancies. Obtained results allow to determine that decrease of the size stimulate formation of oxygen vacancies in cerium oxide nanocrystals.
URI: http://essuir.sumdu.edu.ua/handle/123456789/37220
Type: Article
Appears in Collections:Наукові видання (ЕлІТ)

Views
Other50
Canada1
China1
Germany4
France1
Italy1
United States1
Downloads
Other25
China13
Germany2
Estonia1
Russia1
Ukraine3
United States1


Files in This Item:
File Description SizeFormatDownloads 
maksimchuk_luminescence.pdf473.52 kBAdobe PDF46Download


Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.