Korean Journal of Materials Research (한국재료학회지)

Materials Research Society of Korea (한국재료학회)
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Nano Dispersion of Aggregated Y2O3:Eu Red Phosphor and Photoluminescent Properties of Its Nanosol

응집된 Y2O3:Eu Red 형광체의 나노분산 및 나노졸의 형광특성

  • 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))
  • Received : 2016.11.03
  • Accepted : 2016.12.22
  • Published : 2017.02.27
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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.

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