KR20190042108A - 콘택 집적 및 선택적 실리사이드 형성 방법들 - Google Patents
콘택 집적 및 선택적 실리사이드 형성 방법들 Download PDFInfo
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Abstract
Description
도 1은 본원에 설명된 일 구현에 따른 방법의 작동들을 예시한다.
도 2는 본원에 설명된 일 구현에 따른 방법의 작동들을 예시한다.
이해를 용이하게 하기 위해, 가능한 경우, 도면들에 공통된 동일한 요소들을 지시하는 데에 동일한 참조 번호들이 사용되었다. 일 구현의 요소들 및 특징들이 추가의 언급 없이 다른 구현들에 유익하게 포함될 수 있다는 것이 고려된다.
Claims (15)
- 실리사이드 형성 방법으로서,
소스/드레인(S/D) 영역들을 노출시키기 위해 콘택 트렌치 식각 프로세스를 수행하는 단계;
상기 노출된 S/D 영역들에 대해 세정 프로세스를 수행하는 단계;
에피택셜 게르마늄 증착을 상기 S/D 영역들 상에 수행하는 단계; 및
상기 에피택셜 증착된 게르마늄을 약 550 ℃ 미만의 온도에서 규소 함유 전구체 및 티타늄 함유 전구체에 노출시킴으로써 상기 S/D 영역들 상에 실리사이드 형성 프로세스를 수행하는 단계를 포함하는, 실리사이드 형성 방법. - 제1항에 있어서,
상기 에피택셜 증착된 게르마늄은 갈륨으로 도핑되는, 실리사이드 형성 방법. - 제1항에 있어서,
상기 티타늄 함유 전구체는 TiCl4, TiBr4, 및 TiI4로 이루어진 군으로부터 선택되는, 실리사이드 형성 방법. - 제3항에 있어서,
상기 티타늄 함유 전구체는 TiCl4인, 실리사이드 형성 방법. - 제1항에 있어서,
상기 규소 함유 전구체는 SiH4, Si2H6, Si3H8, 및 Si4H10으로 이루어진 군으로부터 선택되는, 실리사이드 형성 방법. - 제5항에 있어서,
상기 규소 함유 전구체는 SiH4인, 실리사이드 형성 방법. - 제1항에 있어서,
상기 티타늄 함유 전구체 및 상기 규소 함유 전구체는 상기 실리사이드 형성 프로세스 동안 공동 유동되는, 실리사이드 형성 방법. - 제1항에 있어서,
상기 티타늄 함유 전구체 및 상기 규소 함유 전구체는 상기 실리사이드 형성 프로세스 동안 교번하는 방식으로 펄싱되는, 실리사이드 형성 방법. - 제1항에 있어서,
상기 실리사이드 형성 프로세스는 약 500 ℃ 미만의 열 화학 기상 증착에 의해 수행되는, 실리사이드 형성 방법. - 제1항에 있어서,
상기 실리사이드 형성 프로세스 동안 상기 S/D 영역들을 염소 함유 전구체에 노출시키는 단계를 더 포함하고, 상기 염소 함유 전구체는 SiCl4, SiCl3H, SiCl2H2, SiCl2, SiClH4, HCl, Cl2, GeCl4, GeCl2, 및 이들의 조합들 및 혼합물들로 구성되는 군으로부터 선택되는, 실리사이드 형성 방법. - 실리사이드 형성 방법으로서,
소스/드레인(S/D) 영역들을 노출시키기 위해 콘택 트렌치 식각 프로세스를 수행하는 단계 ― 상기 노출된 S/D 영역들은 IV족 물질들을 포함함 ―;
상기 노출된 S/D 영역들에 대해 산화물 제거 프로세스를 수행하는 단계;
에피택셜 게르마늄 증착을 상기 S/D 영역들 상에 수행하는 단계; 및
티타늄, 규소, 및 게르마늄을 포함하는 실리사이드 물질 합금 ― 게르마늄은 합금에 10% 미만의 농도로 존재함 ― 을 형성하기 위해, 상기 에피택셜 증착된 게르마늄을 약 500 ℃ 미만의 온도에서 규소 함유 전구체 및 티타늄 함유 전구체에 노출시킴으로써 상기 S/D 영역들 상에 열 화학 기상 증착 실리사이드 형성 프로세스를 수행하는 단계를 포함하는, 실리사이드 형성 방법. - 제11항에 있어서,
상기 S/D 영역들은 nMOS 유형 디바이스들로서 구성되는, 실리사이드 형성 방법. - 제11항에 있어서,
상기 S/D 영역들은 pMOS 유형 디바이스들로서 구성되는, 실리사이드 형성 방법. - 실리사이드 형성 방법으로서,
pMOS 유형 및 nMOS 유형 소스/드레인(S/D) 영역들을 노출시키기 위해 콘택 트렌치 식각 프로세스를 수행하는 단계;
상기 노출된 S/D 영역들에 대해 제1 세정 프로세스를 수행하는 단계;
pMOS 유형 S/D 영역들을 마스킹하는 단계;
상기 pMOS 유형 S/D 영역들 상에 에피택셜 게르마늄 증착을 수행하는 단계;
마스크를 상기 pMOS 유형 S/D 영역들로부터 제거하는 단계;
nMOS 유형 S/D 영역들을 마스킹하는 단계;
상기 nMOS 유형 S/D 영역들 상에 에피택셜 게르마늄 증착을 수행하는 단계;
마스크를 상기 nMOS 유형 S/D 영역들로부터 제거하는 단계;
상기 S/D 영역들에 대해 제2 세정 프로세스를 수행하는 단계; 및
상기 에피택셜 증착된 게르마늄을 약 550 ℃ 미만의 온도에서 규소 함유 전구체 및 티타늄 함유 전구체에 노출시킴으로써 상기 S/D 영역들 상에 실리사이드 형성 프로세스를 수행하는 단계를 포함하는, 실리사이드 형성 방법. - 제14항에 있어서,
상기 실리사이드 형성 프로세스는 티타늄, 규소, 및 게르마늄을 포함하는 실리사이드 물질 합금을 형성하고, 게르마늄은 10% 미만의 농도로 합금에 존재하는, 실리사이드 형성 방법.
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EP (1) | EP3513435A4 (ko) |
KR (2) | KR102259187B1 (ko) |
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KR102259187B1 (ko) * | 2016-09-15 | 2021-06-01 | 어플라이드 머티어리얼스, 인코포레이티드 | 콘택 집적 및 선택적 실리사이드 형성 방법들 |
KR20220099143A (ko) | 2021-01-04 | 2022-07-13 | 삼성전자주식회사 | 반도체 장치 |
US20220416032A1 (en) * | 2021-06-25 | 2022-12-29 | Intel Corporation | Co-deposition of titanium and silicon for improved silicon germanium source and drain contacts |
US20250054812A1 (en) * | 2023-08-10 | 2025-02-13 | Applied Materials, Inc. | Selective bottom-up metal fill/cap on junction silicide by selective metal removal |
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EP3513435A4 (en) | 2020-04-22 |
US10103028B2 (en) | 2018-10-16 |
US10964544B2 (en) | 2021-03-30 |
TW202213449A (zh) | 2022-04-01 |
KR102302000B1 (ko) | 2021-09-14 |
TWI773584B (zh) | 2022-08-01 |
TW201824338A (zh) | 2018-07-01 |
TWI749054B (zh) | 2021-12-11 |
US20180076041A1 (en) | 2018-03-15 |
EP3513435A2 (en) | 2019-07-24 |
WO2018052473A3 (en) | 2018-07-26 |
KR102259187B1 (ko) | 2021-06-01 |
KR20210064429A (ko) | 2021-06-02 |
WO2018052473A2 (en) | 2018-03-22 |
US20190051531A1 (en) | 2019-02-14 |
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