Synthesis and Photo Luminescent Characteristics of SrAl2O4:Eu2+,Dy3+ Phosphor using Polymer Matrix

폴리머 매트릭스를 전구체로 사용한 SrAl2O4:Eu2+,Dy3+ 축광성 형광체의 합성 및 형광 특성

  • 김수종 (한라대학교 신소재화학공학과) ;
  • 권혁실 (한라대학교 신소재화학공학과)
  • Published : 2007.08.01


[ $SrAl_2O_4:Eu^{2+},\;Dy^{3+}$ ] phosphor was synthesized using the impregnation method, and its photoluminescence and long-afterglow properties were investigated, A mixture of $Sr(NO_3)_2,\;Al(NO_3)_2\;9H_2O,\;EuCl_3\;6H_2O,\;DyCl_3\;6H_2O,\;NdCl_3\;6H_2O$ salts were dissolved in distilled water and impregnating into the polymer precursor. After drying, the impregnated mixture was heat treated at $900-1400^{\circ}C$ for 2h in a $N_2-H_2$ reduction atmosphere. The microstructure and crystal structure of the $SrAl_2O_4:Eu^{2+},\;Dy^{3+}$ powders were examined by scanning electron microscopy and X-ray diffraction, respectively. The photoluminescence spectra showed an excitation band along over wide wavelength of 250-450nm, and a broaden emission with a maxima peak at 360nm. In addition, the spectra also showed a good long after glow that decayed over a 1000sec period after 10 min excitation illumination.


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