Korean Journal of Materials Research (한국재료학회지)

Materials Research Society of Korea (한국재료학회)
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Preparations of (Yl-xGdx)2O3:Eu3＋ Phosphors Particles by. Solvothermal Synthesis Using the 2-Methoxy Ethanol

2-메톡시에탄올을 사용한 용매열 합성법에 의해 합성되어진 (Yl-xGdx)2O3:Eu3＋ 형광체입자

  • Shin, Su-Cheol (Department of Industrial chemistry, Dankook University) ;
  • Cho, Tae-Hwan (Department of Industrial chemistry, Dankook University)
  • 신수철 (단국대학교 공업화학과) ;
  • 조태환 (단국대학교 공업화학과)
  • Published : 2003.08.01
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Abstract

($Y_{l-x}$ $Gd_{x}$ )$O_2$$_3$: $Eu^{ 3＋}$ red phosphors were prepared with the solvothermal synthesis using the 2-methoxy-ethanol solvents and the emission intensity was investigated that applied with the 254 nm wavelength and the maximum excitation wavelength for energy source. The used solvents for the solvothermal synthesis were made of nitrate salt solutions of Y, Gd and Eu. These solutions dropped in autoclave have be reacted with the solvothermal synthesis at $200^{\circ}C$ for 5hrs and the red phosphors prepared here in were showed the pure cubic phase after annealing at $1000∼1200^{\circ}C$. The brightness of ($Y_{l-x}$ $Gd_{x}$)$_2$$O_3$: $Eu^{3＋}$ phosphors particles was increased as an increase of Gd ratio. The maximum excitation wavelengths of ($Y_{l-x}$ $Gd_{x}$ )$_2$$O_3$: $Eu^{3＋}$ / phosphors particles were increased according to increasing Gd ratio from 253 nm to 259 nm wavelength. The maximum emission intensity of $Gd_2$$O_3$: $Eu^{3＋}$ (Y/Gd = 1/0) phosphors particles under UV 259 nm was found to be higher than the commercial product of $Y_2$$O_3$: $Eu^{3＋}$ phosphors.

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References

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