Journal
JOURNAL OF ALLOYS AND COMPOUNDS
Volume 581, Issue -, Pages 484-487Publisher
ELSEVIER SCIENCE SA
DOI: 10.1016/j.jallcom.2013.07.122
Keywords
Nanophosphor; YAG:Dy; Thermographic
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Dy3+ doped yttrium aluminum garnet (YAG) nanophosphors were synthesized by a co-precipitation method for potential thermographic applications in a liquid media dispersed with fluorescent nanoparticles. The doping concentration and annealing temperature on the structural and optical properties of YAG: Dy were investigated. Pure phase YAG: Dy nanophosphors were obtained by annealing the co-precipitated hydroxide products at above 900 degrees C. Maximum photoluminescence intensity was observed from 6%Dy doped YAG samples. The effect of measuring temperature between 20 and 350 degrees C on the photoluminescence spectra of nano YAG: Dy was investigated. A temperature-sensitive change in the peak intensity ratio of 496/457 nm emission lines was demonstrated for such nanophosphors for the first time, suggesting potential applications in temperature monitoring of fuel spray. (C) 2013 Elsevier B. V. All rights reserved.
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