KR20100110392A - 박막 트랜지스터의 제조 방법, 박막 트랜지스터 - Google Patents
박막 트랜지스터의 제조 방법, 박막 트랜지스터 Download PDFInfo
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- H01L29/40—Electrodes ; Multistep manufacturing processes therefor
- H01L29/43—Electrodes ; Multistep manufacturing processes therefor characterised by the materials of which they are formed
- H01L29/45—Ohmic electrodes
- H01L29/456—Ohmic electrodes on silicon
- H01L29/458—Ohmic electrodes on silicon for thin film silicon, e.g. source or drain electrode
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- H01L23/532—Arrangements for conducting electric current within the device in operation from one component to another, i.e. interconnections, e.g. wires, lead frames including external interconnections consisting of a multilayer structure of conductive and insulating layers inseparably formed on the semiconductor body characterised by the materials
- H01L23/53204—Conductive materials
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- H01L23/53228—Conductive materials based on metals, e.g. alloys, metal silicides the principal metal being copper
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- H01L23/532—Arrangements for conducting electric current within the device in operation from one component to another, i.e. interconnections, e.g. wires, lead frames including external interconnections consisting of a multilayer structure of conductive and insulating layers inseparably formed on the semiconductor body characterised by the materials
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Abstract
Description
도 1(b) 는 본 발명의 트랜지스터 제조 방법을 설명하기 위한 도면이다.
도 1(c) 는 본 발명의 트랜지스터 제조 방법을 설명하기 위한 도면이다.
도 1(d) 는 본 발명의 트랜지스터 제조 방법을 설명하기 위한 도면이다.
도 1(e) 는 본 발명의 트랜지스터 제조 방법을 설명하기 위한 도면이다.
도 1(f) 는 본 발명의 트랜지스터 제조 방법을 설명하기 위한 도면이다.
도 1(g) 는 본 발명의 트랜지스터 제조 방법을 설명하기 위한 도면이다.
도 1(h) 는 본 발명의 트랜지스터 제조 방법을 설명하기 위한 도면이다.
도 1(i) 는 본 발명의 트랜지스터 제조 방법을 설명하기 위한 도면이다.
도 2 는 금속 배선막을 설명하기 위한 도면이다.
도 3 은 본 발명의 트랜지스터를 제조하는 성막 장치를 설명하기 위한 도면이다.
[부호의 설명]
5 트랜지스터
10 처리 대상물
12 게이트 전극
16 실리콘층
18 n 형 실리콘층
20a, 20b 금속 배선막
27 소스 전극막
28 드레인 전극막
31 소스 영역
32 드레인 영역
51 밀착층
52 금속 저저항층
111 구리 합금 타겟
112 순구리 타겟
Claims (10)
- 처리 대상물 상에 게이트 전극을 형성하는 공정과,
상기 게이트 전극 상에 게이트 절연층을 형성하는 공정과,
상기 게이트 절연층 상에 반도체층을 형성하는 공정과,
상기 반도체층 상에 오믹 컨택트층을 형성하는 공정과,
상기 오믹 컨택트층 상에 금속 배선막을 형성하는 공정과,
상기 오믹 컨택트층과 상기 금속 배선막을 패터닝하여 제 1, 제 2 오믹 컨택트층과 소스 전극과 드레인 전극을 형성하는 공정을 갖는 역스태거형 박막 트랜지스터의 제조 방법으로서,
상기 금속 배선막을 형성하는 공정은, 진공 분위기 중에서, Al 과 구리를 함유하는 구리 합금 타겟을, 스퍼터링 가스와 산화성 가스를 함유하는 가스를 도입하여 스퍼터링하고, 상기 오믹 컨택트층 상에 구리와 Al 과 산소를 함유하는 밀착층을 형성하는 공정을 포함하는, 박막 트랜지스터의 제조 방법. - 제 1 항에 있어서,
Al 을, 상기 구리 합금 타겟에 5 원자% 이상 30 원자% 이하의 비율로 함유시키는, 박막 트랜지스터의 제조 방법. - 제 1 항 또는 제 2 항에 있어서,
상기 금속 배선막을 형성하는 공정은, 상기 밀착층을 형성한 후, 상기 밀착층보다 구리의 함유율이 높고, 상기 밀착층보다 저저항인 금속 저저항층을 상기 밀착층 상에 형성하는 공정을 포함하는, 박막 트랜지스터의 제조 방법. - 제 1 항 내지 제 3 항 중 어느 한 항에 있어서,
상기 산화성 가스에는 O2 가스를 사용하고, 상기 O2 가스는 상기 스퍼터링 가스 100 체적부에 대해, 0.1 체적부 이상 15 체적부 이하의 범위로 함유시키는, 박막 트랜지스터의 제조 방법. - 제 1 항 내지 제 3 항 중 어느 한 항에 있어서,
상기 산화성 가스에는 CO2 가스를 사용하고, 상기 CO2 가스는 상기 스퍼터링 가스 100 체적부에 대해, 0.2 체적부 이상 30 체적부 이하의 범위로 함유시키는, 박막 트랜지스터의 제조 방법. - 제 1 항 내지 제 3 항 중 어느 한 항에 있어서,
상기 산화성 가스에는 H2O 가스를 사용하고, 상기 H2O 가스는 상기 스퍼터링 가스 100 체적부에 대해, 0.1 체적부 이상 15 체적부 이하의 범위로 함유시키는, 박막 트랜지스터의 제조 방법. - 처리 대상물 상에 형성된 게이트 전극과,
상기 게이트 전극 상에 형성된 게이트 절연층과,
상기 게이트 절연층 상에 형성된 반도체층과,
상기 반도체층 상에 형성되고 분리되어 있는 제 1, 제 2 오믹 컨택트층과,
상기 제 1, 제 2 오믹 컨택트층 상에 각각 형성된 소스 전극과 드레인 전극을 갖는 역스태거형 박막 트랜지스터로서,
상기 소스 전극과 상기 드레인 전극은, 상기 제 1, 제 2 오믹 컨택트층과의 접촉면에, Al 과 산소를 함유하는 구리 합금을 포함하는 밀착층을 갖는, 박막 트랜지스터. - 제 7 항에 있어서,
상기 제 1, 제 2 오믹 컨택트층은 n 형 반도체층인, 박막 트랜지스터. - 제 7 항 또는 제 8 항에 있어서,
상기 밀착층보다 구리의 함유율이 높고, 상기 밀착층보다 저저항인 금속 저저항층이 상기 밀착층 상에 배치된, 박막 트랜지스터. - 제 7 항 내지 제 9 항 중 어느 한 항에 있어서,
상기 밀착층에 함유되는 금속 중 Al 은 5 원자% 이상 30 원자% 이하의 비율로 함유된, 박막 트랜지스터.
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