한국세라믹학회지 (Journal of the Korean Ceramic Society)

  • 제50권4호
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  • Pages.280-287
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  • 2013
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  • 1229-7801(pISSN)
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  • 2234-0491(eISSN)
한국세라믹학회 (The Korean Ceramic Society)
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The Densification and Photoluminescence Characteristics of Ca-α-SiAlON:Eu2+ Plate Phosphor

  • Park, Young-Jo (Engineering Ceramics Research Group, Korea Institute of Materials Science) ;
  • Lee, Jae-Wook (Engineering Ceramics Research Group, Korea Institute of Materials Science) ;
  • Kim, Jin-Myung (Engineering Ceramics Research Group, Korea Institute of Materials Science) ;
  • Golla, Brahma Raju (Engineering Ceramics Research Group, Korea Institute of Materials Science) ;
  • Yoon, Chang-Bun (Electro Materials and Device Center, Samsung LED) ;
  • Yoon, Chulsoo (Electro Materials and Device Center, Samsung LED)
  • 투고 : 2013.07.01
  • 심사 : 2013.07.23
  • 발행 : 2013.07.31
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초록

Plate-type phosphor is a promising substitute in overcoming the issues related to the powder phosphor paste mixed with resin. In this research, $Ca-{\alpha}-SiAlON:Eu^{2+}$ plate phosphor ($Ca_xSi_{12-(m+n)}Al_{m+n}O_nN_{16-n}:Eu_y$) was investigated for the varied compositions (m,n) of the host crystal with the fixed Eu content (y). Densification was promoted for the compositions with increasing 'm' values for the m=2n relationship. Dictated by the Eu concentration inside the phosphor crystal, photoluminescence intensity was stronger in ${\alpha}2$ specimen (m = 3.0, n = 1.5) containing the second phases when compared to ${\alpha}1$ specimen (m = 1.5, n = 0.75) comprising a single-phase ${\alpha}$-SiAlON. The concentration of Eu in the non-emitting amorphous interfacial glass phase was 2~4 times of the designed Eu concentration inside the ${\alpha}$-SiAlON crystal.

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참고문헌

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피인용 문헌

  1. :Eu and YAG:Ce for White Light-Emitting Diodes vol.99, pp.1, 2016, https://doi.org/10.1111/jace.13948
  2. Sialon from synthesis to applications: an overview vol.9, pp.4, 2013, https://doi.org/10.1080/21870764.2021.1987613