SOL–GEL COMBUSTION SYNTHESIS AND LUMINESCENT PROPERTIES OF NANOCRYSTALLINEY3Al5O12:Eu3+PHOSPHORS

Ye Ran Jung, Hyun Kyoung Yang, Byung Kee Moon, Byung Chun Choi, Jung Hyun Jeong (), Jung Hwan Kim, Jong Seong Bae and Eui Duck Jeong
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Ye Ran Jung: Department of Physics, Pukyong National University, Busan 608-737, Korea
Hyun Kyoung Yang: Department of Physics, Pukyong National University, Busan 608-737, Korea
Byung Kee Moon: Department of Physics, Pukyong National University, Busan 608-737, Korea
Byung Chun Choi: Department of Physics, Pukyong National University, Busan 608-737, Korea
Jung Hyun Jeong: Department of Physics, Pukyong National University, Busan 608-737, Korea
Jung Hwan Kim: Department of Physics, Dong Eui University, Busan 614-714, Korea
Jong Seong Bae: Nano Surface Technology Research Laboratory, Korea Basic Science Institute, Busan 609-735, Korea
Eui Duck Jeong: Nano Surface Technology Research Laboratory, Korea Basic Science Institute, Busan 609-735, Korea

Surface Review and Letters (SRL), 2010, vol. 17, issue 01, 73-79

Abstract: NanosizedYAG:Eu3+powder samples were synthesized by using co-precipitation method and combining stoichiometric ratios ofY(NO3)3· 6H2O,Eu(NO3)3· 5H2O,Al(OR)3. After sintering at the temperature of 900°C for 3 h,YAG:Eu3+nanoparticles with single phase were obtained. In comparison with the conventional solid-state reaction process, this sol–gel process not only decreased the temperature required for synthesizingYAG:Eu3+powder, but also reduced their particle size to the nanometer range. The crystallinity, surface morphology and photoluminescent characteristics of phosphors were investigated by using X-ray diffraction (XRD), scanning electron microscopy (SEM) and luminescence spectrophotometer, respectively. The size of the nanocrystalline materials was found to increase from 33.66 to 51.70 nm with the annealing temperature increasing from 900° to 1100°C. The photoluminescence spectra shows the emissions radiated by the transitions from5D0excited states to7FJ(J = 1, 2)states ofEu3+ions. The crystallinity, surface morphology and photoluminescence spectra of phosphors were highly dependent on the sintering temperature.

Keywords: YAG:Eu3+; nanoparticles; sol–gel; phosphors (search for similar items in EconPapers)
Date: 2010
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DOI: 10.1142/S0218625X10013850

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