KR102279757B1 - 확산 방지막의 형성 방법, 상기 확산 방지막을 포함하는 반도체 소자의 금속 배선 및 이의 제조 방법 - Google Patents
확산 방지막의 형성 방법, 상기 확산 방지막을 포함하는 반도체 소자의 금속 배선 및 이의 제조 방법 Download PDFInfo
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- H01L21/76871—Layers specifically deposited to enhance or enable the nucleation of further layers, i.e. seed layers
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Abstract
Description
도 6은 본 발명의 일 실시예에 따른 확산 방지막을 형성하는 원자층 증착법의 플로우 다이어그램을 나타낸 것이다.
도 7은 본 발명의 일 실시예에 따른 확산 방지막의 결정 구조의 XRD 분석 결과를 나타낸 것이다.
도 8은 본 발명의 일 실시예에 따른 확산 방지막의 망간(Mn) 함량에 따른 저항의 변화를 나타낸 것이다.
도 9는 본 발명의 일 실시예에 따른 확산 방지막의 어닐링 처리 온도에 따른 저항의 변화를 나타낸 것이다.
도 10은 본 발명의 일 실시예에 따른 확산 방지막의 어닐링 처리 후 결정 구조의 XRD 분석 결과를 나타낸 것이다.
Claims (14)
- a) 원자층 증착법에 의해 루테늄(Ru)을 증착하는 단계; 및
b) 원자층 증착법에 의해 망간(Mn)을 증착하는 단계;를 포함하되,
상기 단계 a)가 N1회 수행된 후, 상기 단계 b)가 N2회 수행되고, 여기서 N1는 N2보다 크고,
상기 단계 a) 및 단계 b)는 하나의 증착 사이클을 이루며, 상기 증착 사이클이 복수회 반복되고,
상기 망간(Mn)은 상기 루테늄(Ru)에 함입되어 합금을 형성하고, 상기 합금은 나노결정질(nanocrystalline)의 비-주상형(non-columnar) 결정구조를 가지는 루테늄-망간(Ru-Mn) 합금인 것을 특징으로 하는 확산 방지막의 형성 방법.
- 제1항에 있어서,
상기 N1:N2 비는 35:1 내지 35:5인 것을 특징으로 하는 확산 방지막의 형성 방법.
- 제1항에 있어서,
상기 합금에 있어서, 상기 망간의 함유량은 2 at% 초과이고 7 at% 미만인 것을 특징으로 하는 확산 방지막의 형성 방법.
- 삭제
- 제1항 내지 제3항 중 어느 한 항에 따른 방법을 통해 기판 상에 확산 방지막을 형성하는 단계;
기판 상에 형성된 확산 방지막을 어닐링하는 단계; 및
어닐링된 확산 방지막 상에 금속 배선층을 형성하는 단계;를 포함하는 반도체 소자의 금속 배선의 제조 방법.
- 제5항에 있어서,
상기 어닐링은 350 ℃ 내지 550 ℃의 범위 내에서 수행되는 것을 특징으로 하는 반도체 소자의 금속 배선의 제조 방법.
- 제6항에 있어서,
상기 어닐링을 통해 상기 기판과 상기 확산 방지막의 접촉 계면에 망간 산화물이 형성되는 것을 특징으로 하는 반도체 소자의 금속 배선의 제조 방법.
- 제7항에 있어서,
상기 기판이 실리콘 기판인 경우, 상기 망간 산화물은 실리콘-망간 산화물(MnxSiOy)인 것을 특징으로 하는 반도체 소자의 금속 배선의 제조 방법.
- 제5항에 있어서,
상기 금속 배선층은 상기 확산 방지막을 시드(seed)층으로 하여 전해 도금되는 것을 특징으로 하는 반도체 소자의 금속 배선의 제조 방법.
- 제9항에 있어서,
상기 금속 배선층은 구리를 포함하는 것을 특징으로 하는 반도체 소자의 금속 배선의 제조 방법.
- 기판 상에 제1항 내지 제3항 중 어느 한 항에 따른 방법을 통해 형성된 확산 방지막과 상기 확산 방지막 상에 전해 도금된 금속 배선층을 포함하고, 상기 기판과 상기 확산 방지막의 접촉 계면에 망간 산화물이 형성된 반도체 소자의 금속 배선.
- 제11항에 있어서,
상기 망간 산화물은 상기 확산 방지막의 어닐링을 통해 형성되는 것을 특징으로 하는 반도체 소자의 금속 배선.
- 제11항에 있어서,
상기 기판이 실리콘 기판인 경우, 상기 망간 산화물은 실리콘-망간 산화물(MnxSiOy)인 것을 특징으로 하는 반도체 소자의 금속 배선.
- 제11항에 있어서,
상기 금속 배선층은 구리를 포함하는 것을 특징으로 하는 반도체 소자의 금속 배선.
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Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
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| US10163695B1 (en) * | 2017-06-27 | 2018-12-25 | Lam Research Corporation | Self-forming barrier process |
| US10501846B2 (en) | 2017-09-11 | 2019-12-10 | Lam Research Corporation | Electrochemical doping of thin metal layers employing underpotential deposition and thermal treatment |
| US11031285B2 (en) | 2017-10-06 | 2021-06-08 | Invensas Bonding Technologies, Inc. | Diffusion barrier collar for interconnects |
| CN112352065A (zh) * | 2018-06-30 | 2021-02-09 | 朗姆研究公司 | 用于衬里钝化和粘附性改善的金属衬里的锌化和掺杂 |
| TW202021046A (zh) * | 2018-09-14 | 2020-06-01 | 美商應用材料股份有限公司 | 形成具有嵌入式阻障層的穿孔之方法 |
| KR102370705B1 (ko) * | 2020-06-30 | 2022-03-04 | 고려대학교 산학협력단 | 루테늄계 나노선 및 그의 제조 방법 |
| US20230132632A1 (en) * | 2021-10-28 | 2023-05-04 | Adeia Semiconductor Bonding Technologies Inc. | Diffusion barriers and method of forming same |
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| JP2009030167A (ja) * | 2007-07-02 | 2009-02-12 | Ebara Corp | 基板処理方法及び基板処理装置 |
| JP2011001568A (ja) * | 2009-06-16 | 2011-01-06 | Tokyo Electron Ltd | バリヤ層、成膜方法及び処理システム |
| US20110006430A1 (en) * | 2005-06-24 | 2011-01-13 | Stmicroelectronics (Crolles 2) Sas | Copper diffusion barrier |
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| US20070160899A1 (en) * | 2006-01-10 | 2007-07-12 | Cabot Corporation | Alloy catalyst compositions and processes for making and using same |
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|---|---|---|---|---|
| US20110006430A1 (en) * | 2005-06-24 | 2011-01-13 | Stmicroelectronics (Crolles 2) Sas | Copper diffusion barrier |
| JP2009030167A (ja) * | 2007-07-02 | 2009-02-12 | Ebara Corp | 基板処理方法及び基板処理装置 |
| JP2011001568A (ja) * | 2009-06-16 | 2011-01-06 | Tokyo Electron Ltd | バリヤ層、成膜方法及び処理システム |
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