KR100715739B1 - 높은 k 값의 게이트 유전체를 갖는 반도체 장치를제조하는 방법 - Google Patents
높은 k 값의 게이트 유전체를 갖는 반도체 장치를제조하는 방법 Download PDFInfo
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- KR100715739B1 KR100715739B1 KR1020057017441A KR20057017441A KR100715739B1 KR 100715739 B1 KR100715739 B1 KR 100715739B1 KR 1020057017441 A KR1020057017441 A KR 1020057017441A KR 20057017441 A KR20057017441 A KR 20057017441A KR 100715739 B1 KR100715739 B1 KR 100715739B1
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Abstract
Description
Claims (22)
- 기판 위에 높은 k 값의 게이트 유전체 층을 형성하는 공정과,상기 높은 k 값의 게이트 유전체 층으로부터 불순물들을 제거하고 상기 높은 k 값의 게이트 유전체 층의 산소 함유량을 증가시키기 위하여, 상기 높은 k 값의 게이트 유전체 층에 습식 화학 처리(wet chemical treatment)를 적용하는 공정과,상기 적용 공정 후에, 상기 높은 k 값의 게이트 유전체 층 위에 캐핑 층(capping layer)을 형성하는 공정과,상기 캐핑 층을 산화하여 상기 높은 k 값의 게이트 유전체 층 위에 캐핑 유전체 산화물을 형성하는 공정과,상기 캐핑 유전체 산화물 위에 게이트 전극을 형성하는 공정을 포함하는 반도체 장치 제조 방법.
- 제1항에 있어서, 상기 높은 k 값의 게이트 유전체 층은 원자층 화학 기상 증착법에 의해 형성되고, 상기 높은 k 값의 게이트 유전체 층은, 하프늄 산화물, 하프늄 실리콘 산화물, 란탄 산화물, 지르코늄 산화물, 지르코늄 실리콘 산화물, 티타늄 산화물, 탄탈 산화물, 바륨 스트론튬 티타늄 산화물(barium strontium titanium oxide), 바륨 티타늄 산화물, 스트론튬 티타늄 산화물, 이트륨 산화물, 알루미늄 산화물, 납 스칸듐 탄탈 산화물 및 납 아연 니오브산염(lead zinc niobate)으로 구성된 군으로부터 선택된 재료를 포함하는 반도체 장치 제조 방법.
- 제1항에 있어서, 상기 캐핑 층은 실리콘을 포함하는 반도체 장치 제조 방법.
- 제3항에 있어서, 상기 캐핑 층은 약 5개의 단일 층(monolayer)들의 두께보다 작은 두께를 갖는 반도체 장치 제조 방법.
- 제4항에 있어서, 플라즈마 소스에 의해 발생된 이온화된 산소 핵종(ionized oxygen species)에 상기 캐핑 층을 노출시키는 것을 포함하는 플라즈마 화학 기상 증착법(plasma enhanced chemical vapor deposition)을 사용하여 상기 캐핑 층이 산화되는 반도체 장치 제조 방법.
- 제4항에 있어서, 상기 캐핑 층은, 산화제를 포함하는 용액에 상기 캐핑 층을 노출시킴으로써 산화되는 반도체 장치 제조 방법.
- 제6항에 있어서, 상기 산화제는 과산화수소를 포함하는 반도체 장치 제조 방법.
- 제7항에 있어서, 상기 게이트 전극은 폴리실리콘을 포함하는 반도체 장치 제조 방법.
- 삭제
- 기판 위에 높은 k 값의 게이트 유전체 층을 형성하는 공정과,상기 높은 k 값의 게이트 유전체 층으로부터 불순물들을 제거하고 상기 높은 k 값의 게이트 유전체 층의 산소 함유량을 증가시키기 위하여, 상기 높은 k 값의 게이트 유전체 층에 습식 화학 처리를 적용하는 공정과,상기 적용 공정 후에, 상기 높은 k 값의 게이트 유전체 층 위에 약 5개의 단일 층들의 두께보다 작은 두께의 캐핑 층을 형성하는 공정과,상기 캐핑 층을 산화하여 상기 높은 k 값의 게이트 유전체 층 위에 캐핑 유전체 산화물을 형성하는 공정과,상기 캐핑 유전체 산화물 위에 폴리실리콘을 포함하는 층을 형성하는 공정을 포함하는 반도체 장치 제조 방법.
- 제10항에 있어서, 상기 높은 k 값의 게이트 유전체 층은, 원자 층 화학 기상 증착법(atomic layer chemical vapor deposition)에 의해 형성되고, 약 5 옹스트롬과 약 40 옹스트롬 사이의 두께를 갖는 반도체 장치 제조 방법.
- 제11항에 있어서, 상기 높은 k 값의 게이트 유전체 층은 하프늄 산화물, 지르코늄 산화물, 티타늄 산화물 및 알루미늄 산화물로 구성된 군으로부터 선택된 재료를 포함하는 반도체 장치 제조 방법.
- 제12항에 있어서, 상기 캐핑 층은, 실리콘을 포함하고, 플라즈마 소스에 의해 발생된 이온화된 산소 핵종에 상기 캐핑 층을 노출시키는 것을 포함하는 플라즈마 화학 기상 증착법을 사용하여 산화되는 반도체 장치 제조 방법.
- 제12항에 있어서, 상기 캐핑 층은, 실리콘을 포함하고, 과산화수소를 포함하는 용액에 상기 캐핑 층을 노출시킴으로써 산화되는 반도체 장치 제조 방법.
- 기판 위에 높은 k 값의 게이트 유전체 층을 형성하는 공정 -상기 높은 k 값의 게이트 유전체 층은, 약 60 옹스트롬보다 작은 두께를 갖고, 하프늄 산화물, 지르코늄 산화물, 티타늄 산화물 및 알루미늄 산화물로 구성된 군으로부터 선택된 재료를 포함함- 과,상기 높은 k 값의 게이트 유전체 층 위에, 약 5개의 단일 층들의 두께보다 작은 두께의 실리콘 함유층을 형성하는 공정과,상기 실리콘 함유층을 산화하여 상기 높은 k 값의 게이트 유전체 층 위에 이산화규소 층을 형성하는 공정과,상기 이산화규소 층 위에 폴리실리콘을 포함하는 층을 형성하는 공정과,상기 폴리실리콘 함유층, 상기 이산화규소 층 및 상기 높은 k 값의 게이트 유전체 층을 에칭하는 공정을 포함하는 반도체 장치 제조 방법.
- 제15항에 있어서, 상기 높은 k 값의 게이트 유전체 층은, 원자 층 화학 기상 증착법에 의해 형성되고, 약 5 옹스트롬과 약 40 옹스트롬 사이의 두께를 갖는 반도체 장치 제조 방법.
- 제16항에 있어서, 플라즈마 소스에 의해 발생된 이온화된 산소 핵종에 상기 실리콘 함유층을 노출시키는 것을 포함하는 플라즈마 화학 기상 증착법을 사용하여 상기 실리콘 함유층이 산화되는 반도체 장치 제조 방법.
- 제16항에 있어서, 상기 실리콘 함유층은 과산화수소를 포함하는 용액에 상기 실리콘 함유층을 노출시킴으로써 산화되는 반도체 장치 제조 방법.
- 제18항에 있어서, 상기 실리콘 함유층은 적어도 약 1 분 동안 약 15℃와 약 40℃ 사이의 온도에서 과산화수소를 포함하는 용액에 노출되는 반도체 장치 제조 방법.
- 제15항에 있어서, 상기 높은 k 값의 게이트 유전체 층 위에 상기 실리콘 함유층을 형성하기 전에, 상기 높은 k 값의 게이트 유전체 층으로부터 불순물들을 제거하고 상기 높은 k 값의 게이트 유전체 층의 산소 함유량을 증가시키기 위해서, 상기 높은 k 값의 게이트 유전체 층에 습식 화학 처리를 적용하는 공정을 더 포함하는 반도체 장치 제조 방법.
- 제1항에 있어서, 상기 습식 화학 처리는 수산화물의 소스를 포함하는 반도체 장치 제조 방법.
- 제10항에 있어서, 상기 습식 화학 처리는 수산화물의 소스를 포함하는 반도체 장치 제조 방법.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US10/391,816 | 2003-03-18 | ||
| US10/391,816 US6696327B1 (en) | 2003-03-18 | 2003-03-18 | Method for making a semiconductor device having a high-k gate dielectric |
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| Publication Number | Publication Date |
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| KR20050108407A KR20050108407A (ko) | 2005-11-16 |
| KR100715739B1 true KR100715739B1 (ko) | 2007-05-09 |
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| US (2) | US6696327B1 (ko) |
| EP (1) | EP1604405A1 (ko) |
| KR (1) | KR100715739B1 (ko) |
| CN (1) | CN100413087C (ko) |
| AU (1) | AU2003299751A1 (ko) |
| TW (1) | TWI230434B (ko) |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| US7132336B1 (en) | 2002-02-12 | 2006-11-07 | Lsi Logic Corporation | Method and apparatus for forming a memory structure having an electron affinity region |
| US6989565B1 (en) * | 2002-04-15 | 2006-01-24 | Lsi Logic Corporation | Memory device having an electron trapping layer in a high-K dielectric gate stack |
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- 2003-12-18 AU AU2003299751A patent/AU2003299751A1/en not_active Abandoned
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- 2003-12-18 CN CNB2003801005816A patent/CN100413087C/zh not_active Expired - Fee Related
- 2003-12-18 KR KR1020057017441A patent/KR100715739B1/ko not_active Expired - Fee Related
- 2003-12-22 TW TW092136431A patent/TWI230434B/zh not_active IP Right Cessation
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| US20040185627A1 (en) | 2004-09-23 |
| TWI230434B (en) | 2005-04-01 |
| US6696327B1 (en) | 2004-02-24 |
| WO2004084311A1 (en) | 2004-09-30 |
| CN1692500A (zh) | 2005-11-02 |
| CN100413087C (zh) | 2008-08-20 |
| AU2003299751A1 (en) | 2004-10-11 |
| EP1604405A1 (en) | 2005-12-14 |
| US6897134B2 (en) | 2005-05-24 |
| KR20050108407A (ko) | 2005-11-16 |
| TW200425392A (en) | 2004-11-16 |
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