KR100781541B1 - PFET에는 임베디드 SiGe, NFET에는 레이즈드소스/드레인 구조 형성 - Google Patents
PFET에는 임베디드 SiGe, NFET에는 레이즈드소스/드레인 구조 형성 Download PDFInfo
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Abstract
Description
Claims (15)
- a) 기판의 NFET 영역 상에 NFET 게이트 구조를 제공하고 PFET 영역 상에 PFET 게이트 구조를 제공하고b) 상기 NFET 게이트에 인접하여 NFET SDE 영역(Source/Drain Extension; 소스/드레인 확장 영역)을 제공하고, 상기 PFET 게이트에 인접하여 PFET SDE 영역을 제공하고,c) 상기 PFET 게이트 구조에 포함된 PFET 제2 스페이서에 인접한 기판의 상기 PFET 영역에 리세스를 형성하고,d) 상기 리세스 내에 PFET 임베디드(embedded) 소스/드레인 스트레서를 형성하고,e) 상기 NFET SDE 영역 상에 NFET 소스/드레인 에피텍셜 Si층을 형성하고, 상기 PFET 임베디드 소스/드레인 스트레서 상에 PFET 소스/드레인 에피텍셜 Si층을 형성하고,f) 상기 NFET 게이트 구조에 인접한 NFET 영역 및 상기 NFET 소스/드레인 에피텍셜 Si층에 N형 이온을 주입하는 NFET 소스/드레인 이온주입을 수행하여 레이즈드(raised) NFET 소스/드레인을 형성하는 것을 포함하는 반도체 소자의 제조 방법.
- 제 1항에 있어서,상기 NFET 게이트 구조는 NFET 게이트 절연막, NFET 게이트, 질화막을 포함하는 NFET 게이트 캡층, NFET 제1 스페이서 및 NFET 제2 스페이서를 포함하고,상기 PFET 게이트 구조는 PNFET 게이트 절연막, PFET 게이트, 질화막을 포함하는 PFET 게이트 캡층, PFET 제1 스페이서 및 PFET 제2 스페이서를 포함하고,상기 PFET 영역 및 상기 NFET 영역 사이에 소자 분리 영역이 제공되는 반도체 소자의 제조 방법.
- 제 1항에 있어서,리세스를 형성하는 것은NFET 영역 상에 절연층을 형성하고,PFET 영역 상에 리세스를 형성하고,상기 절연층을 제거하는 것을 더 포함하는 반도체 소자의 제조 방법.
- 제 1항에 있어서,상기 NFET 소스/드레인 에피텍셜 Si층의 두께는 PFET 소스/드레인 에피텍셜 Si층의 두께보다 5-20% 더 두꺼운 반도체 소자의 제조 방법.
- 제 2항에 있어서,상기 NFET 소스/드레인 에피텍셜 Si층을 형성한 후에,PFET 캡층 및 NFET 캡층을 식각 및 제거하고, 상기 제2 PFET 스페이서 및 상기 제2 NFET 스페이서를 적어도 일부 제거하여, 리듀스드 제2 PFET 스페이서 및 리듀스드 제2 NFET 스페이서를 형성하는 것을 더 포함하는 반도체 소자의 제조 방법.
- 제 1항에 있어서,상기 NFET 소스/드레인 이온 주입은,PFET 영역 상에 PFET 마스크를 형성하고,상기 NFET 게이트 구조에 인접한 NFET 영역 및 NFET 소스/드레인 에피텍셜 Si층에 N형 이온을 주입하여 레이즈드 NFET 소스/드레인을 형성하고,상기 PFET 마스크를 제거하는 것에 의해 수행되는 반도체 소자의 제조 방법.
- 제 1항에 있어서,상기 NFET SDE 영역 및 상기 PFET 임베디드 소스/드레인 스트레서 상에 실리사이드 영역을 형성하는 것을 더 포함하는 반도체 소자의 제조 방법.
- 제 1항에 있어서,상기 NFET SDE 영역 및 상기 PFET 임베디드 소스/드레인 스트레서 상에 실리사이드 영역을 형성하고,상기 기판, NFET 게이트 구조 및 PFET 게이트 구조 상에 스트레서막을 형성하는 것을 더 포함하는 반도체 소자의 제조 방법.
- 제 1항에 있어서,상기 PFET 임베디드 소스/드레인 스트레서를 형성하는 것은 붕소를 인시츄(in-situ)로 도핑하는 SiGe 에피텍시 공정을 사용하는 반도체 소자의 제조 방법.
- a) 기판의 NFET 영역 상의 NFET 게이트 구조 및 PFET 영역 상의 PFET 게이트 구조를 제공하고,(1) 상기 NFET 게이트 구조는 NFET 게이트 절연막, NFET 게이트, NFET 게이트 캡층, NFET 제1 스페이서, NFET 제2 스페이서를 포함하고,(2) 상기 PFET 게이트 구조는 PFET 게이트 절연막, PFET 게이트, PFET 게이트 캡층, PFET 제1 스페이서 및 PFET 제2 스페이서를 포함하고,b) 상기 NFET 게이트에 인접하여 NFET SDE 영역을 제공하고, 상기 PFET 게이트에 인접하여 PFET SDE 영역을 제공하고,c) 상기 PFET 제2 스페이서에 인접한 기판의 상기 PFET 영역에 리세스를 형성하고,d) 붕소가 인시츄로 도핑되는 SiGe 에피텍시 공정을 사용하여 PFET 임베디드 소스/드레인 스트레서를 형성하고,e) 상기 NFET SDE 영역 상에 NFET 소스/드레인 에피텍셜 Si층을 형성하고, 상기 PFET 임베디드 소스/드레인 스트레서 상에 PFET 소스/드레인 에피텍셜 Si층을 형성하고,(1) 상기 NFET 소스/드레인 에피텍셜 Si층의 두께는 상기 PFET 소스/드레인 에피텍셜 Si층의 두께보다 더 두껍고,f) 상기 PFET 게이트 캡층 및 상기 NFET 게이트 캡층을 식각 및 제거하고, 상기 제2 PFET 스페이서 및 상기 제2 NFET 스페이서를 적어도 일부 제거하고,g) 리듀스드 제2 PFET 스페이서 및 리듀스드 제2 NFET 스페이서를 형성하고,h) 상기 NFET 게이트 구조에 인접한 NFET 영역 및 상기 NFET 소스/드레인 에피텍셜 Si층 내에 N형 이온을 주입하는 NFET 소스/드레인 이온주입을 수행하여 NFET 레이즈드 소스/드레인을 형성하고,i) NFET 레이즈드 소스/드레인 영역 및 PFET 임베디드 소스/드레인 스트레서 상에 실리사이드 영역을 형성하는 것을 포함하는 반도체 소자의 제조 방법.
- 제 10항에 있어서,상기 기판, NFET 게이트 구조 및 PFET 게이트 구조 상에 스트레서막을 형성하는 것을 더 포함하는 반도체 소자의 제조 방법.
- a) 기판의 NFET 영역 상의 NFET 게이트 구조 및 기판의 PFET 영역 상의 PFET 게이트 구조;b) 상기 NFET 게이트에 인접한 상기 NFET 영역의 NFET SDE 영역 및 상기 PFET 게이트에 인접한 PFET SDE 영역;c)상기 PFET 게이트 구조에 인접한 상기 기판의 상기 PFET 영역 내의 리세스;d) 상기 리세스 내에 형성되며 도핑된 SiGe를 포함하는 PFET 임베디드 소스/드레인 스트레서;e) 상기 NFET SDE 영역 상의 NFET 소스/드레인 에피텍셜 Si층;f) 상기 NFET 영역의 상기 NFET 게이트 구조에 인접하고 상기 NFET SDE 영역 내로 확장된 NFET 소스/드레인 영역을 포함하며, 레이즈드 NFET 소스/드레인은 NFET 소스/드레인 영역 및 NFET 소스/드레인 에피텍셜 Si층을 포함하는 반도체 소자.
- 제 12항에 있어서,NFET 레이즈드 소스/드레인 영역 및 PFET 임베디드 소스/드레인 스트레서 상에 형성된 실리사이드 영역을 더 포함하는 반도체 소자.
- 제 12항에 있어서,NFET 레이즈드 소스/드레인 영역 및 PFET 임베디드 소스/드레인 스트레서 상에 형성된 실리사이드 영역; 및상기 기판, NFET 게이트 구조 및 PFET 게이트 구조 상에 형성된 스트레서막을 더 포함하는 반도체 소자.
- 제 12항에 있어서,상기 NFET 게이트 구조는 NFET 게이트 절연막, NFET 게이트, NFET 제1 스페이서 및 NFET 제1 스페이서 상의 리듀스드 제2 NFET 스페이서를 포함하고,상기 PFET 게이트 구조는 PFET 게이트 절연막, PFET 게이트, PFET 제1 스페이서 및 PFET 제1 스페이서 상의 리듀스드 제2 PFET 스페이서를 포함하는 반도체 소자.
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KR20070064231A (ko) | 2007-06-20 |
US7718500B2 (en) | 2010-05-18 |
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SG133479A1 (en) | 2007-07-30 |
US20100219485A1 (en) | 2010-09-02 |
US8288825B2 (en) | 2012-10-16 |
SG153817A1 (en) | 2009-07-29 |
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