한국세라믹학회지 (Journal of the Korean Ceramic Society)

  • 제53권4호
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  • Pages.381-385
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  • 2016
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  • 1229-7801(pISSN)
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  • 2234-0491(eISSN)
한국세라믹학회 (The Korean Ceramic Society)
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Fabrication of Mixed and Patterned Type of Remote Phosphors by Screen Printing Process and their Optical Properties

  • Kim, Byung-Ho (Optic & Display Material Center, Korea Institute of Ceramic Engineering and Technology) ;
  • Hwang, Jonghee (Optic & Display Material Center, Korea Institute of Ceramic Engineering and Technology) ;
  • Lee, Young Jin (Optic & Display Material Center, Korea Institute of Ceramic Engineering and Technology) ;
  • Kim, Jin-Ho (Optic & Display Material Center, Korea Institute of Ceramic Engineering and Technology) ;
  • Jeon, Dae-Woo (Optic & Display Material Center, Korea Institute of Ceramic Engineering and Technology) ;
  • Lee, Mi Jai (Optic & Display Material Center, Korea Institute of Ceramic Engineering and Technology)
  • 투고 : 2016.05.12
  • 심사 : 2016.06.23
  • 발행 : 2016.07.31
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초록

Recently, white LEDs, especially, warm white LEDs have been intensively investigated due to outstanding optical properties, long term stability and low power consumption. In this study, mixed type and patterned type of remote phosphors were prepared by screen printing process employing green and red phosphor. Each type of remote phosphor exhibited distinctive photoluminescence spectrum. For example, the mixed type of remote phosphor exhibited unique spectrum, while the patterned type showed expectable spectrum depending on the concentration of phosphors. This indicates that a small amount of red phosphor dramatically reduced the green photoluminescence in the case of mixed-type remote phosphor, whereas the effect was negligible in the patterned-type remote phosphor. The possibility of undesirable chemical reaction was further investigated by using scanning electron microscopy and X-ray diffraction.

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참고문헌

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피인용 문헌

  1. Glass Ceramic Phosphors: Towards Long-Lifetime High-Power White Light-Emitting-Diode Applications-A Review vol.12, pp.6, 2016, https://doi.org/10.1002/lpor.201700344