한국재료학회지 (Korean Journal of Materials Research)

  • 제22권12호
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  • Pages.669-674
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  • 2012
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  • 1225-0562(pISSN)
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  • 2287-7258(eISSN)
한국재료학회 (Materials Research Society of Korea)
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유리조성에 따른 백색 LED용 색변환 유리의 광특성

Effect of Glass Composition on the Optical Properties of Color Conversion Glasses for White LED

  • 허철민 (한국세라믹기술원 광.디스플레이소재팀) ;
  • 황종희 (한국세라믹기술원 광.디스플레이소재팀) ;
  • 임태영 (한국세라믹기술원 광.디스플레이소재팀) ;
  • 김진호 (한국세라믹기술원 광.디스플레이소재팀) ;
  • 이미재 (한국세라믹기술원 광.디스플레이소재팀) ;
  • 유종성 ((주) 파티클로지) ;
  • 박태호 ((주) 파티클로지) ;
  • 문주호 (연세대학교 대학원 신소재 공학부)
  • Huh, Cheolmin (Korea Institute of Ceramic Engineering &Technology (KICET)) ;
  • Hwang, Jonghee (Korea Institute of Ceramic Engineering &Technology (KICET)) ;
  • Lim, Tae-Young (Korea Institute of Ceramic Engineering &Technology (KICET)) ;
  • Kim, Jin-Ho (Korea Institute of Ceramic Engineering &Technology (KICET)) ;
  • Lee, MiJai (Korea Institute of Ceramic Engineering &Technology (KICET)) ;
  • Yoo, Jong-Sung (Particlogy Co., Limited) ;
  • Park, Tae-Ho (Particlogy Co., Limited) ;
  • Moon, Jooho (Department of Materials Science and Engineering, Yonsei University)
  • 투고 : 2012.10.29
  • 심사 : 2012.12.03
  • 발행 : 2012.12.27
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초록

Yellow phosphor dispersed color conversion glasses are promising phosphor materials for white LED applications because of their good thermal durability, chemical stability, and anti-ultraviolet property. Six color conversion glasses were prepared with high Tg and low Tg specimens of glass. Luminous efficacy, luminance, CIE (Commission Internationale de l'Eclairage) chromaticity, CCT (Correlated Color Temperature), and CRI (Color Rendering Index) of the color conversion glasses were analyzed according to the PL spectrum. Color conversion glasses with high Tg glass frit, sintered at higher temperature, showed better luminous properties than did color conversion glasses with low Tg glass frit. The characteristics of the color conversion glass depended on the glass composition rather than on the sintering temperature. The XRD peaks of the YAG phosphor disappeared in the color conversion glass with major components of $B_2O_3$-ZnO-$SiO_2$-CaO and, in the XRD results, new crystalline peaks of $BaSi_2O_5$ appeared in the color conversion glass with major components of $Bi_2O_3$-ZnO-$B_2O_3$-MgO. The characteristics of CIE chromaticity, CCT, and the CRI of low Tg color conversion glasses showed worse color properties than those of high Tg color conversion glasses. However, these color characteristics of low Tg glasses were improved by thickness variation. So color conversion glasses with good characteristics of both luminous and color properties were attained.

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피인용 문헌

  1. Glasses on the Optical Properties of Color Conversion Glass vol.24, pp.12, 2014, https://doi.org/10.3740/MRSK.2014.24.12.710
  2. Effect of Glass Refractive Index on Light Extraction Efficiency of Light-Emitting Diodes vol.97, pp.9, 2014, https://doi.org/10.1111/jace.13040
  3. Effect of transmittance on luminescence properties of phosphor-in-glass for LED packaging vol.23, pp.3, 2015, https://doi.org/10.1364/OE.23.000A43