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

  • 제37권2호
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  • Pages.148-153
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  • 2024
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  • 1226-7945(pISSN)
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  • 2288-3258(eISSN)
한국전기전자재료학회 (The Korean Institute of Electrical and Electronic Material Engineers)
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고압 중수소 어닐링을 통한 SiO2 절연체의 균일성 개선

Enhancement of SiO2 Uniformity by High-Pressure Deuterium Annealing

  • 김용식 (대림대학교 반도체학과) ;
  • 정대한 (충북대학교 전자공학부) ;
  • 박효준 (충북대학교 전자공학부) ;
  • 연주원 (충북대학교 전자공학부) ;
  • 길태현 (충북대학교 전자공학부) ;
  • 박준영 (충북대학교 전자공학부)
  • Yong-Sik Kim (Department of Semiconductor Engineering, Daelim University College) ;
  • Dae-Han Jung (School of Electronics Engineering, Chungbuk National University) ;
  • Hyo-Jun Park (School of Electronics Engineering, Chungbuk National University) ;
  • Ju-Won Yeon (School of Electronics Engineering, Chungbuk National University) ;
  • Tae-Hyun Kil (School of Electronics Engineering, Chungbuk National University) ;
  • Jun-Young Park (School of Electronics Engineering, Chungbuk National University)
  • 투고 : 2023.11.03
  • 심사 : 2023.11.20
  • 발행 : 2024.03.01
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초록

As complementary metal-oxide semiconductor (CMOS) is scaled down to achieve higher chip density, thin-film layers have been deposited iteratively. The poor film uniformity resulting from deposition or chemical mechanical planarization (CMP) significantly affects chip yield. Therefore, the development of novel fabrication processes to enhance film uniformity is required. In this context, high-pressure deuterium annealing (HPDA) is proposed to reduce the surface roughness resulting from the CMP. The HPDA is carried out in a diluted deuterium atmosphere to achieve cost-effectiveness while maintaining high pressure. To confirm the effectiveness of HPDA, time-of-flight secondary-ion mass spectrometry (ToF-SIMS) and atomic force microscopy (AFM) are employed. It is confirmed that the absorbed deuterium gas facilitates the diffusion of silicon atoms, thereby reducing surface roughness.

키워드

과제정보

This research was supported by "Regional Innovation Strategy (RIS)" through the National Research Foundation of Korea (NRF) funded by the Ministry of Education (MOE) (2021RIS-001).

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