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http://dx.doi.org/10.3740/MRSK.2017.27.2.100

Nano Dispersion of Aggregated Y2O3:Eu Red Phosphor and Photoluminescent Properties of Its Nanosol  

Lee, Hyun Jin (Eco-composite Materials Center, Korea Institute of Ceramic Engineering & Technology (KICET))
Ban, Se Min (Eco-composite Materials Center, Korea Institute of Ceramic Engineering & Technology (KICET))
Jung, Kyeong-Youl (Department of Chemical Engineering, Kongju National University)
Choi, Byung-Ki (CQV Co)
Kang, Kwang-Jung (CQV Co)
Kim, Dae Sung (Eco-composite Materials Center, Korea Institute of Ceramic Engineering & Technology (KICET))
Publication Information
Korean Journal of Materials Research / v.27, no.2, 2017 , pp. 100-106 More about this Journal
Abstract
Nanosized and aggregated $Y_2O_3:Eu$ Red phosphors were prepared by template method from metal salt impregnated into crystalline cellulose. The particle size and photoluminescent property of $Y_2O_3:Eu$ red phosphors were controlled by variation of the calcination temperature and time. Dispersed nanosol was also obtained from the aggregated $Y_2O_3:Eu$ Red phosphor under bead mill wet process. The dispersion property of the $Y_2O_3:Eu$ nanosol was optimized by controlling the bead size, bead content ratio and milling time. The median particle size ($D_{50}$) of $Y_2O_3:Eu$ nanosol was found to be around 100 nm, and to be below 90 nm after centrifuging. In spite of the low photoluminescent properties of $Y_2O_3:Eu$ nanosol, it was observed that the photoluminescent property recovered after re-calcination. The dispersion and photoluminescent properties of $Y_2O_3:Eu$ nanosol were investigated using a particle size analyzer, FE-SEM, and a fluorescence spectrometer.
Keywords
$Y_2O_3:Eu$; red phosphor; nanosol; bead mill wet process; photoluminescence;
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