KR100455799B1 - 장벽층 제작을 이용한 반도체 공정법 - Google Patents
장벽층 제작을 이용한 반도체 공정법 Download PDFInfo
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Abstract
Description
Claims (32)
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- 기판 위에 반도체 물질의 제 1, 2 전도성 도핑 영역을 서로 이격되게 형성하고;상기 제 2 영역 위에, 상기 반도체 물질로부터 도펀트 물질의 외부 확산에 대한 장벽층을 형성하며;장벽층 형성 이후에, 상기 제 1 영역 위에 Ta2O5를 포함하는 커패시터 유전층을 지닌 커패시터를 절연층을 통해 형성시키고; 그리고상기 제 2 영역에 전기적으로 연결되는 전도 물질을 상기 절연층을 통해 제 2 영역 위에 형성시키는;이상의 단계로 이루어지는 것을 특징으로 하는 반도체 공정법.
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- 기판 위에 반도체 물질의 제 1, 2 전도성 도핑 플러그를 서로 이격되게 형성하고;제 2 도핑 플러그 위에, 또는 제 1, 2 도핑 플러그 위에, 반도체 물질로부터 도펀트 물질의 외부 확산에 대한 장벽층을 형성하며;제 1, 2 도핑 플러그와 장벽층 위에 절연층을 형성하고;제 1 도핑 플러그 위에 커패시터를 형성하며, 이때, 상기 커패시터는 상기 제 1 도핑 플러그와 전기적으로 연결되는 내부 전극을 가지며;상기 내부 전극 위에 Ta2O5를 포함하는 유전층을 형성하고; 그리고상기 제 2 도핑 플러그와 전기적으로 연결되는 전도 물질을 상기 절연층을 통해 상기 제 2 도핑 플러그 위에 형성하는;이상의 단계로 이루어지는 것을 특징으로 하는 반도체 공정법.
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- 절연층 내에 반도체 물질의 제 1, 2 전도성 도핑 플러그를 서로 이격되게 형성하고;제 2 도핑 플러그 위에, 또는 제 1, 2 도핑 플러그 위에, 반도체 물질로부터 도펀트 물질의 외부 확산에 대한 장벽층을 형성하며;제 1, 2 도핑 플러그와 장벽층 위에 도핑 옥사이드 절연층을 형성하고;제 1 도핑 플러그 위의 도핑 옥사이드 절연층 내에 구멍을 형성하며;제 1 도핑 플러그에 전기적으로 연결되는 내부 커패시터 전극을 제 1 도핑 플러그 위의 상기 구멍 내에 형성하고;내부 커패시터 전극 위에 산화 장벽층을 형성하며;산화 장벽층 위에 Ta2O5를 포함하는 커패시터 유전층을 형성하고;Ta2O5를 포함하는 커패시터 유전층 위에 외부 커패시터 전극을 형성하며; 그리고제 2 도핑 플러그와 전기적으로 연결되는 전도 물질을 상기 도핑 옥사이드 절연층을 통해 제 2 도핑 플러그 위에 형성하는;이상의 단계로 구성되는 것을 특징으로 하는 반도체 공정법.
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- 제 1 절연층 내에 반도체 물질의 제 1, 2 전도성 도핑 플러그를 서로 이격되게 형성하고;제 1, 2 도핑 플러그 위에, 반도체 물질로부터 도펀트 물질의 외부 확산에 대한 절연 장벽층을 형성하며;제 1, 2 도핑 플러그와 절연 장벽층 위에 도핑 옥사이드 절연층을 형성하고;제 1 도핑 플러그 위에서 절연 장벽층과 도핑 옥사이드 절연층 내에 구멍을 형성하며;제 2 도핑 플러그 위에서 장벽층의 절연 물질과 도핑 옥사이드 절연층의 절연 물질을 남기면서, 제 1 도핑 플러그와 전기적으로 연결되는 내부 커패시터 전극을 상기 제 1 도핑 플러그 위의 상기 구멍 내에 형성하고;섭씨 900 도 이상의 온도에서 내부 커패시터 전극의 외부면을 질화하여, 상기 외부면 위에 실리콘 나이트라이드 층을 형성하고, 이때 제 2 도핑 플러그 위에 장벽층의 절연 물질과 도핑 옥사이드 절연층의 절연 물질을 남기며, 그리고 상기 질화 단계 중 제 2 도핑 플러그로부터 도핑 절연 옥사이드층으로 도펀트 물질이 확산하는 것을 절연 장벽층을 이용하여 제한하며;실리콘 나이트라이드 위에 Ta2O5를 포함하는 커패시터 유전층을 증착하고;제 2 도핑 플러그 위에 장벽층의 절연 물질과 도핑 옥사이드 절연층의 절연 물질을 남기면서, 섭씨 750 도 이상의 고밀화 분위기에 Ta2O5층을 노출시키고, 그리고 상기 고밀화 단계동안 제 2 도핑 플러그로부터 도핑 절연 옥사이드층으로 도펀트 물질의 외부 확산을 절연 장벽층을 이용하여 제한하며;Ta2O5를 포함하는 커패시터 유전층 위에 외부 커패시터 전극을 형성하고; 그리고외부 커패시터 전극을 형성한 후에, 제 2 도핑 플러그에 전기적으로 연결되는 전도 물질을 도핑 옥사이드 절연층을 통해 형성하는;이상의 단계로 구성되는 것을 특징으로 하는 반도체 공정법.
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- 제 1 절연층 내에 반도체 물질의 제 1, 2 전도성 도핑 영역을 서로 이격되게 형성하고;제 1, 2 도핑 영역 위에, 반도체 물질로부터 도펀트 물질의 외부 확산에 대한 장벽층을 형성하며;제 1, 2 도핑 영역과 장벽층 위에 제 2 절연층을 형성하고;제 1 도핑 영역 위에서 장벽층과 제 2 절연층 내에 구멍을 형성하며;제 2 도핑 영역 위에 장벽층과 제 2 절연층을 남기면서, 제 1 도핑 영역과 전기적으로 연결되는 내부 커패시터 전극을 제 1 도핑 영역 위의 상기 구멍 내에 형성하고;섭씨 900 도 이상의 온도에서 내부 커패시터 전극의 외부면을 질화하여, 상기 외부면 위에 나이트라이드 층을 형성하고, 이때 제 2 도핑 영역 위에 장벽층과 제 2 절연층을 남기며, 그리고 상기 질화 단계 중 제 2 도핑 영역으로부터 제 2 절연층으로 도펀트 물질이 확산하는 것을 장벽층을 이용하여 제한하는;이상의 단계를 포함하는 것을 특징으로 하는 반도체 공정법.
- 제 29 항에 있어서, 상기 반도체 공정법은:나이트라이드층 위에 커패시터 유전층을 증착하고;커패시터 유전층 위에 외부 커패시터 전극을 형성하며;외부 커패시터 전극 형성후, 제 2 도핑 영역과 전기적으로 연결되는 전도 물질을 제 2 절연층을 통해 형성하는;이상의 단계를 추가로 포함하는 것을 특징으로 하는 반도체 공정법.
- 제 30 항에 있어서, 상기 반도체 공정법은:제 2 도핑 영역 위에 장벽층과 제 2 절연층을 남기면서, 섭씨 750 도 이상의 고밀화 분위기에 상기 유전층을 노출시키며, 그리고 상기 고밀화 단계동안 제 2 도핑 영역으로부터 제 2 절연층으로 도펀트 물질의 외부 확산을 장벽층을 이용하여 제한하는;이상의 단계를 추가로 포함하는 것을 특징으로 하는 반도체 공정법.
- 제 1 절연층 내에 반도체 물질의 제 1, 2 전도성 도핑 영역을 서로 이격되게 형성하고;제 1, 2 도핑 영역 위에, 반도체 물질로부터 도펀트 물질의 외부 확산에 대한 장벽층을 형성하며;제 1, 2 도핑 영역과 장벽층 위에 제 2 절연층을 형성하고;제 1 도핑 영역 위에서 장벽층과 제 2 절연층 내에 구멍을 형성하며;제 2 도핑 영역 위에 장벽층과 제 2 절연층을 남기면서, 제 1 도핑 영역과 전기적으로 연결되는 내부 커패시터 전극을 제 1 도핑 영역 위의 상기 구멍 내에 형성하고;내부 커패시터 전극 위에 커패시터 유전층을 증착하며;제 2 도핑 영역 위에 장벽층과 제 2 절연층을 남기면서, 섭씨 750도 이상의 온도로 이루어지는 고밀화 조건에 상기 유전층을 노출시키고, 그리고 상기 고밀화 단계 중 제 2 도핑 영역으로부터 제 2 절연층으로 도펀트 물질의 외부 확산을 장벽층을 이용하여 제한하는;이상의 단계를 포함하는 것을 특징으로 하는 반도체 공정법.
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US08/994,054 US6165833A (en) | 1997-12-19 | 1997-12-19 | Semiconductor processing method of forming a capacitor |
US08/994,054 | 1997-12-19 | ||
US8/994,054 | 1997-12-19 |
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KR20010033186A KR20010033186A (ko) | 2001-04-25 |
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US (2) | US6165833A (ko) |
EP (2) | EP1042802B1 (ko) |
JP (1) | JP3663128B2 (ko) |
KR (1) | KR100455799B1 (ko) |
AT (1) | ATE284075T1 (ko) |
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EP1042802A1 (en) | 2000-10-11 |
ATE284075T1 (de) | 2004-12-15 |
US6165833A (en) | 2000-12-26 |
DE69827974D1 (de) | 2005-01-05 |
US6593183B1 (en) | 2003-07-15 |
JP3663128B2 (ja) | 2005-06-22 |
JP2002512435A (ja) | 2002-04-23 |
AU2005999A (en) | 1999-07-12 |
WO1999033098A1 (en) | 1999-07-01 |
EP1508914A3 (en) | 2005-05-25 |
EP1042802B1 (en) | 2004-12-01 |
KR20010033186A (ko) | 2001-04-25 |
DE69827974T2 (de) | 2005-11-24 |
EP1508914A2 (en) | 2005-02-23 |
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