Journal of the Korean Institute of Electrical and Electronic Material Engineers (한국전기전자재료학회논문지)

The Korean Institute of Electrical and Electronic Material Engineers (한국전기전자재료학회)
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Thermodynamic Process Design of CaF2 Single Crystal Growth for Optical Applications

광학응용 CaF2 단결정성장을 위한 열역학적 공정설계

  • Seong-Min Jeong (Semiconductor Materials Center, Korea Institute of Ceramic Engineering and Technology) ;
  • Hae-Jin Jeon (Semiconductor Materials Center, Korea Institute of Ceramic Engineering and Technology) ;
  • Yun-Ji Shin (Semiconductor Materials Center, Korea Institute of Ceramic Engineering and Technology) ;
  • Hyoung-Seuk Choi (Semiconductor Materials Center, Korea Institute of Ceramic Engineering and Technology) ;
  • Si-Young Bae (Semiconductor Materials Center, Korea Institute of Ceramic Engineering and Technology)
  • 정성민 (한국세라믹기술원 반도체소재센터) ;
  • 전해진 (한국세라믹기술원 반도체소재센터) ;
  • 신윤지 (한국세라믹기술원 반도체소재센터) ;
  • 최형석 (한국세라믹기술원 반도체소재센터) ;
  • 배시영 (한국세라믹기술원 반도체소재센터)
  • Received : 2023.01.04
  • Accepted : 2023.01.21
  • Published : 2023.03.01
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Abstract

Calcium fluoride (CaF2) single crystal is applied to numerous industrial applications, especially for optical uses. To have excellent optical transmission properties, however, CaF2 crystals should be carefully fabricated through liquid-phase crystal growth techniques. In this study, as one of the early stage research activities to grow CaF2 crystals with a good transmittance at the ultraviolet wavelength range, computational thermodynamic models were provided to deepen the understanding of the crystal growing processes of CaF2 under various conditions. To remove point defects and oxygen impurities in the grown CaF2 crystals, the system was thermodynamically evaluated to get optimal process conditions. From the reviews of previous experimental studies, computational thermodynamic approaches were found to be an effective and powerful tool to understand the meaning of the crystal growth processes and to obtain optimal process conditions.

Keywords

Acknowledgement

이 논문은 정부(과학기술정보통신부)의 재원으로 한국연구재단-나노·소재기술개발사업의 지원을 받아 수행된 연구임(2021M3H4A3A01055832).

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