ISSN:
1662-9779
Source:
Scientific.Net: Materials Science & Technology / Trans Tech Publications Archiv 1984-2008
Topics:
Physics
Notes:
Rare earth doped materials have many familiar applications (TV screens, solid lasers,scintillators…) thanks to their efficient and robust luminescence properties. In recent years,growing interest has been focused on the changes in their optical properties with the size of the hostparticles. In this work, nanomaterials were produced for the first time by using laser pyrolysis. Y,Gd, and Eu nitrates were dissolved in water and used as precursors. Cubic phases of Y2O3:Eu3+ andGd2O3:Eu3+ were obtained with sizes ranging from 3 to 40 nm. The spectroscopic propertiesrevealed a new and nanostructure-specific broad band in the excitation spectrum. The emissionspectrum was found to be characteristic of nanostructured sesquioxides only when excited in thisnew band, which was finally assumed to be a new charge transfer band for the smallestnanoparticles in the sample
Type of Medium:
Electronic Resource
URL:
http://www.tib-hannover.de/fulltexts/2011/0528/02/24/transtech_doi~10.4028%252Fwww.scientific.net%252FSSP.128.157.pdf
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