Applied Science and Convergence Technology

한국진공학회 (The Korean Vacuum Society)
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Cation Substitution Induced Enhanced Photoluminescence Properties of Gd2(1-x-y)Y2xMo4O15:2yEu3+ Phosphors for Indoor Lighting

  • Du, Peng (Department of Electronic Engineering, Institute for Wearable Convergence Electronics, Kyung Hee University) ;
  • Yu, Jae Su (Department of Electronic Engineering, Institute for Wearable Convergence Electronics, Kyung Hee University)
  • 투고 : 2018.05.17
  • 심사 : 2018.05.29
  • 발행 : 2018.05.30
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초록

We reported a new method to enhance the photoluminescence (PL) properties of $Eu^{3+}$ ions doped $Gd_2Mo_4O_{15}$ phosphors via cation substitution. With the aid of conventional sol-gel method, a series of $Eu^{3+}$ ions doped $Gd_{2(1-x)}Y_{2x}Mo_4O_{15}$ phosphors were prepared. The prepared samples emitted red light when excited at 393 nm. Moreover, when part of the $Gd^{3+}$ ions was substituted by the $Y^{3+}$ ions, the PL emission intensity of the studied samples was enhanced and the optimal doping concentration for $Y^{3+}$ ions was 30 mol%. The calculated CIE coordinate (0.663,0.337) was situated in the red region. Furthermore, the thermal quenching behaviors of the synthesized $Eu^{3+}$ ions doped $Gd_{2(1-x)}Y_{2x}Mo_4O_{15}$ phosphors were studied. At last, we also packaged a red-emitting light-emitting diode device by integrating the obtained phosphors and a near-ultraviolet chip to verify the applications of the $Eu^{3+}$ ions doped $Gd_{2(1-x)}Y_{2x}Mo_4O_{15}$ phosphors for indoor lighting.

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