한국결정성장학회지 (Journal of the Korean Crystal Growth and Crystal Technology)

  • 제26권2호
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  • Pages.80-83
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  • 2016
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  • 1225-1429(pISSN)
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  • 2234-5078(eISSN)
한국결정성장학회 (The Korea Association of Crystal Growth)
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고출력 LD 용 형광체 세라믹 플레이트의 두께에 따른 광학 특성

The effect of thickness on luminous properties of ceramic phosphor plate for high-power LD

  • 지은경 (성균관대학교 성균나노과학기술원) ;
  • 이철우 (성균관대학교 신소재공학과) ;
  • 송영현 (성균관대학교 신소재공학과) ;
  • 정병우 (LG전자 소재기술원) ;
  • 정몽권 (효성기술원) ;
  • 윤대호 (성균관대학교 성균나노과학기술원)
  • Ji, Eun Kyung (SKKU Advanced Institute of Nanotechnology (SAINT), Sungkyunkwan University) ;
  • Lee, Chul Woo (School of Advanced Materials Science & Engineering, Sungkyunkwan University) ;
  • Song, Young Hyun (School of Advanced Materials Science & Engineering, Sungkyunkwan University) ;
  • Jeong, Byung Woo (LG Electronics, Material & Device Advanced Research Institute Advanced Optics Team) ;
  • Jung, Mong Kown (Hyosung Corporation, R&D Business Labs) ;
  • Yoon, Dae-Ho (SKKU Advanced Institute of Nanotechnology (SAINT), Sungkyunkwan University)
  • 투고 : 2016.04.08
  • 심사 : 2016.04.20
  • 발행 : 2016.04.30
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초록

본 연구에서는 고출력 자동차 헤드램프용 LD 에 적용 가능한 garnet 구조의 YAG : Ce 형광체 세라믹 플레이트를 제작하고 광학 특성을 분석하였다. 액상법을 이용하여 단분산된 구형 나노 YAG : Ce 입자를 합성하고 이를 $Al_2O_3$와 혼합하여 형광체 세라믹 플레이트를 제작하였다. 형광체 세라믹 플레이트의 두께를 $75{\mu}m$, $100{\mu}m$로 조절하여 두께에 따른 광 변환 효율, 열 소광(Thermal quenching), 휘도 및 색온도의 광학 특성을 비교하였다. 실험 결과, 광 변환 효율의 감소 폭은 모두 25 % 감소하였고, 열 소광, 최대 광 변환 효율 값, 최대 휘도 값은 $100{\mu}m$ 일 때 더 높게 나타났다.

In the present paper, garnet structured $Y_3Al_5O_{12}:Ce^{3+}$ (YAG : Ce) ceramic phosphor plate (CPP) for high power laser diode (LD) was prepared and optical properties were analyzed. We synthesized monodispersed spherical nano-sized YAG : Ce particles by liquid phase method, fabricated phosphor ceramic plate with the addition of $Al_2O_3$. $75{\mu}m$ and $100{\mu}m$ thick YAG : Ce CPPs were compared in terms of the factors of conversion efficacy, thermal quenching, luminance and correlated color temperature (CCT). In conclusion, conversion efficacy decreased by 25 % in both samples and $100{\mu}m$ thick sample provides better optical properties of thermal quenching, maximum light conversion efficacy and maximum luminance value.

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참고문헌

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