KR101605338B1 - 토폴로지컬 절연체를 이용한 네거티브 커패시터를 구비하는 트랜지스터 및 그 제조 방법 - Google Patents
토폴로지컬 절연체를 이용한 네거티브 커패시터를 구비하는 트랜지스터 및 그 제조 방법 Download PDFInfo
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Abstract
Description
도 2a는 페르미 에너지 준위에 따른 토폴로지컬 절연체의 양자적 커패시턴스를 나타낸 그래프이다.
도 2b는 텔루르화 비스무트에 칼슘을 도핑할 경우 페르미 준위의 변화를 나타낸 그래프이다.
도 3은 본 발명의 일 실시예에 따른 토폴로지컬 절연체를 이용한 네거티브 커패시터를 구비하는 트랜지스터의 개략도이다.
도 4는 본 발명의 다른 실시예에 따른 토폴로지컬 절연체를 이용한 네거티브 커패시터를 구비하는 트랜지스터의 개략도이다.
도 5는 본 발명의 일 실시예에 따른 토폴로지컬 절연체를 이용한 네거티브 커패시터를 구비하는 트랜지스터의 제조 방법을 도시한 순서도이다.
30 : 제2 도핑 영역 40 : 고유전율 금속 스택
41 : 유전체 막 42 : 금속 막
50 : 제2 실리콘 기판 60 : 네거티브 커패시터
61 : 질화티타늄 막 62 : 토폴로지컬 절연체 막
63 : 금 전극 S : 소스
D : 드레인 G : 게이트
Claims (10)
- 실리콘 기판 위에 형성되고 소스 단자가 연결되는 제1 도핑 영역;
상기 실리콘 기판 위에 형성되고 드레인 단자가 연결되는 제2 도핑 영역;
상기 실리콘 기판 위에 형성되는 고유전율 금속 스택; 및
일 측면이 상기 고유전율 금속 스택과 직렬로 연결되고 타 측면이 게이트 단자로 연결되며 토폴로지컬 절연체 막을 포함하는 네거티브 커패시터를 포함하되,
상기 네거티브 커패시터는 질화티타늄 막, 상기 질화티타늄 막 위에 증착되는 상기 토폴로지컬 절연체 막 및 상기 토폴로지컬 절연체 막 위에 증착되는 금 전극을 포함하고,
상기 질화티타늄 막은 실리콘 기판 위에 80nm 두께로 DC 마그네트론 스퍼터링법으로 증착되어 형성되고, 상기 토폴로지컬 절연체 막은 셀렌화비스무트, 텔루르화비스무트 및 텔루르화안티몬 중 적어도 하나로 이루어지고 칼슘이 도핑되며, 상기 금 전극은 상기 토폴로지컬 절연체 막 위에 열증착법으로 증착되는 것을 특징으로 하는 트랜지스터.
- 제 1항에 있어서,
상기 고유전율 금속 스택은 상기 실리콘 기판 위에 산화하프늄 막이 원자층 증착법에 의하여 적층되어 형성되는 것을 특징으로 하는 트랜지스터.
- 제 2항에 있어서,
상기 네거티브 커패시터는 상기 산화하프늄 막 위에 원자층 증착법에 의하여 증착되어 형성되는 것을 특징으로 하는 트랜지스터.
- 삭제
- 삭제
- 제1 실리콘 기판 위에 고유전율 금속 스택을 형성하는 단계;
상기 고유전율 금속 스택 및 제2 실리콘 기판 중 적어도 하나의 위에 질화티타늄 막을 형성하는 단계;
토폴로지컬 절연체 막을 상기 질화티타늄 막 위에 형성하는 단계; 및
금 전극을 상기 토폴로지컬 절연체 막 위에 형성하는 단계를 포함하되,
상기 토폴로지컬 절연체 막은 셀렌화비스무트, 텔루르화비스무트 및 텔루르화안티몬 중 적어도 하나로 이루어지고 칼슘이 도핑되는 것을 특징으로 하는 트랜지스터의 제조 방법.는 트랜지스터의 제조 방법.
- 제 6항에 있어서.
상기 고유전율 금속 스택은 상기 제1 실리콘 기판 위에 산화하프늄 막이 원자층 증착법에 의하여 적층되어 형성되는 것을 특징으로 하는 트랜지스터의 제조 방법.
- 제 6항에 있어서.
상기 질화티타늄 막은 고유전율 금속 스택 및 제2 실리콘 기판 중 적어도 하나의 위에 80nm 두께로 DC 마그네트론 스퍼터링법으로 증착되어 형성되는 것을 특징으로 하는 트랜지스터의 제조 방법.
- 삭제
- 제 6항에 있어서.
상기 금 전극은 상기 토폴로지컬 절연체 막 위에 열증착법으로 증착되는 것을 특징으로 하는 트랜지스터의 제조 방법.
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Cited By (2)
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KR20190083507A (ko) | 2018-01-04 | 2019-07-12 | 연세대학교 산학협력단 | 격자진동을 제어할 수 있는 위상절연체 구조물과 그것을 포함하는 트랜지스터 및 솔라셀 |
WO2023081966A1 (en) * | 2021-11-11 | 2023-05-19 | Monash University | Negative capacitance topological quantum field-effect transistor |
Citations (1)
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JP2002353422A (ja) * | 2001-03-27 | 2002-12-06 | Sharp Corp | 高誘電率材料を有するmfmosキャパシタおよびその製造方法 |
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JP2002353422A (ja) * | 2001-03-27 | 2002-12-06 | Sharp Corp | 高誘電率材料を有するmfmosキャパシタおよびその製造方法 |
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KR20190083507A (ko) | 2018-01-04 | 2019-07-12 | 연세대학교 산학협력단 | 격자진동을 제어할 수 있는 위상절연체 구조물과 그것을 포함하는 트랜지스터 및 솔라셀 |
WO2023081966A1 (en) * | 2021-11-11 | 2023-05-19 | Monash University | Negative capacitance topological quantum field-effect transistor |
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