• Title/Summary/Keyword: Cathodoluminance

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The Cathodoluminance Properties of $Y_2SiO_5$:Ce Blue Phosphor with Surface Coatings ($Y_2SiO_5$:Ce 청색 형광체의 표면 코팅에 따른 음극선 발광특성)

  • 음현중;김성우;이임렬
    • Proceedings of the Korean Institute of Electrical and Electronic Material Engineers Conference
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    • 1999.11a
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    • pp.590-593
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    • 1999
  • $Y_2SiO_5$:Ce was considered as blue phosphor for field emission display because it had an excellent resistance against brightness saturation. But unfortunately It hadn't a sufficient brightness to be applied to FED. In this experiment It-$In_2O_3$, MgO and $SiO_2$ were coated onto $Y_2SiO_5$:Ce phosphor in order to improve the cathodoluminance(CL properties. The coating structures were identified to be the crystalline phases of $In_2O_3$ and MgO respectively. They had fine particle-like shape and were distributed on the surface of $Y_2SiO_5$:Ce phosphor. It was found that the CL efficiency of $Y_2SiO_5$:Ce phosphors were decreased after coatings with In20:j and MgO in voltage range from 500 V to 5 kV. But the brightness of $Y_2SiO_5$:Ce phosphor was increased after coating of 5 0 2 . And also the aging test showed that $In_2O_3$ coating improved the life time of $Y_2SiO_5$:Ce phosphor.

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The Cathodoluminance Properties of ${Y_2}{SiO_5}:Ce$ Blue Phosphor with Surface Coatings (${Y_2}{SiO_5}:Ce$ 청색 형광체의 표면 코팅에 따른 음극선 발광특성)

  • Kim, Seong-U;Lee, Im-Ryeol
    • Korean Journal of Materials Research
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    • v.10 no.8
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    • pp.558-563
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    • 2000
  • $Y_2SiO_5:Ce$ phosphor was coated with $In_2O_3$, $Al_2O_3$ and $SiO_2$ and then their cathodoluminance(CL)proper-ties required in field emission display were investigated. It was found that luminance efficiency and aging p개perty of $Y_2SiO_5:Ce$ phosphor was decreased with $In_2O_3$coating. For the case of coating, the luminance intensity was in blue phosphor was dramatically increased with $SiO_2$ coating. And also the aging property of $Y_2SiO_5:Ce$ Phosphor coated with $SiO_2$ was significantly improved compared to non-coated sample.

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