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Luminescence Properties of Red Phosphor Gd2-x-yLixEuyO3

적색 형광체 Gd2-x-yLixEuyO3의 발광 특성

  • 조신호 (신라대학교 광전자공학과, 극초단광전자연구소) ;
  • 변송호 (경희대학교 환경응용화학부) ;
  • 김동국 (경북대학교 자연과학대학 화학과) ;
  • 박중철 (신라대학교 나노생체화학공학부 나노소재공학전공)
  • Published : 2002.03.01

Abstract

We present a new toed phosphor, $Gd_{2-x-y}Li_xEu_yO_3$ with superior luminescent Properties compared to the commercially available red phosphor $Y_2O_3:Eu^{3+}$. The phosphor, with a diameter of about $2\mu\textrm{m}$, consists of the psedospherical particles in a regular array. The photoluminescence measurements as a function of the laser power and the Eu mole fraction were performed at zoom temperature The luminescence intensity linearly increases as both the laser power and the Eu mole fraction Increase. As for the dependence on cathodoluminescence, the incorporation of Eu and Li ions into $Gd_2O_3$ lattice brings about an increase in luminescent efficiency. The highest emission intensity for the phosphor occurs at the applied voltage of 500 V, its value is larger than that of $Y_2O_3:Eu^{3+}$ powder by 70%.

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