KR101307780B1 - 반도체 소자의 금속배선 및 그 제조방법 - Google Patents
반도체 소자의 금속배선 및 그 제조방법 Download PDFInfo
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Abstract
Description
도 2는 도 1의 금속배선의 제조방법을 설명하는 단면도들이다.
도 3은 도 1의 금속배선을 제조하는데 사용하는 증착장치의 개략도이다.
도 4는 본 발명에 따른 층간 절연막 및 종래 층간 절연막의 스크래치 지수에 대한 도표이다.
도 5는 본 발명에 따른 층간 절연막의 질화처리의 온도 및 시간에 따른 표면 경도 변화에 대한 도표이다.
110: 층간 절연막 130: 경도 조절부
150: 확산 방지막 170: 금속
190: 보호막 410: 배선창
20: 증착장치
Claims (20)
- 기판 상에 형성된 층간 절연막을 패터닝하여 배선창을 형성하는 단계;
상기 기판이 배치되는 증착장치에 질소를 포함하는 가스를 주입하여 상기 층간 절연막의 표면을 질화처리하는 단계;
상기 증착장치에 상기 질소를 포함하는 가스 및 금속가스를 함께 주입하여 확산 방지막을 형성하는 단계;
상기 배선창을 금속으로 채우는 단계; 및
화학기계적연마(Chemical Mechanical Polishing; CMP) 공정으로 상기 배선창 이외에 형성된 금속을 제거하는 단계를 포함하고,
상기 질소를 포함하는 가스를 주입하여 상기 층간 절연막의 표면을 질화처리하는 단계 및 상기 질소를 포함하는 가스 및 금속가스를 함께 주입하여 확산 방지막을 형성하는 단계는 연속적인 공정인 것을 특징으로 하는 반도체 소자의 금속배선 제조방법.
- 제1항에 있어서, 상기 질소를 포함하는 가스를 주입하여 상기 층간 절연막의 표면을 질화처리하는 단계는,
질소(N2), 암모니아(NH3), 일산화질소(NO), 이산화질소(NO2) 중 적어도 하나의 가스를 주입하는 것을 특징으로 하는 반도체 소자의 금속배선 제조방법.
- 제1항에 있어서, 상기 질소를 포함하는 가스를 주입하여 상기 층간 절연막의 표면을 질화처리하는 단계는,
상기 증착장치의 상부 전극 및 하부 전극에 펄스 플라즈마 전원을 인가하는 단계를 더 포함하는 것을 특징으로 하는 반도체 소자의 금속배선 제조방법.
- 제3항에 있어서,
상기 펄스 플라즈마 전원의 순간 피크 전압차이는 1 kV 내지 10 kV의 범위를 유지하는 것을 특징으로 하는 반도체 소자의 금속배선 제조방법.
- 제1항에 있어서, 상기 질소를 포함하는 가스를 주입하여 상기 층간 절연막의 표면을 질화처리하는 단계는,
상기 기판의 표면을 열처리하는 단계를 더 포함하는 것을 특징으로 하는 반도체 소자의 금속배선 제조방법.
- 제5항에 있어서,
상기 기판의 표면은 100 ℃ 내지 500 ℃의 범위에서 열처리되는 것을 특징으로 하는 반도체 소자의 금속배선 제조방법.
- 제1항에 있어서, 상기 배선창을 금속으로 채우는 단계는,
상기 확산 방지막 상에 금속 씨앗(seed)층을 증착하는 단계; 및
전해도금법을 이용하여 상기 금속 씨앗층 상에 구리를 형성하는 단계를 포함하는 것을 특징으로 하는 반도체 소자의 금속배선 제조방법.
- 제1항에 있어서,
상기 화학기계적연마 공정 이후에 상기 금속배선 상에 보호막을 형성하는 단계를 더 포함하는 것을 특징으로 하는 반도체 소자의 금속배선 제조방법.
- 제1항에 있어서,
상기 모든 단계들을 적어도 두 번 이상 반복하여 다층의 금속배선을 형성하는 것을 특징으로 하는 반도체 소자의 금속배선 제조방법.
- 배선창이 형성된 층간 절연막;
상기 층간 절연막의 상부 및 상기 배선창과 마주보는 상기 층간 절연막의 표면이 질화처리된 경도(hardness) 조절부;
상기 배선창과 마주보는 상기 층간 절연막의 표면에 형성된 경도 조절부 상에 형성된 확산 방지막; 및
상기 배선창을 채우고 있는 금속을 포함하는 반도체 소자의 금속배선.
- 제10항에 있어서,
상기 금속은 구리(Cu)를 포함하는 것을 특징으로 하는 반도체 소자의 금속배선.
- 제10항에 있어서,
상기 층간 절연막은 실리콘산화물(SiO2)을 포함하는 것을 특징으로 하는 반도체 소자의 금속배선.
- 제12항에 있어서,
상기 층간 절연막은 테트라에틸옥시실리케이트(tetraethoxysilicate; TEOS), 고밀도 플라즈마 옥사이드(high density plasma oxide; HDP-Oxide), 보로포스포실리케이트 글래스(borophosphosilicate glass; BPSG) 중 하나로 이루어진 것을 특징으로 하는 반도체 소자의 금속배선.
- 제10항에 있어서,
상기 경도 조절부는 실리콘질화물(SiNx) 또는 실리콘산화질화물(SiOyNz)을 포함하는 것을 특징으로 하는 반도체 소자의 금속배선.
- 제10항에 있어서,
상기 경도 조절부의 질소 농도는 1 % 내지 75 % 사이인 것을 특징으로 하는 반도체 소자의 금속배선.
- 제10항에 있어서,
상기 경도 조절부의 유전상수는 상기 층간 절연막에 비해 5 % 내지 15 % 낮은 것을 특징으로 하는 반도체 소자의 금속배선.
- 제10항에 있어서,
상기 확산 방지막은 질화텅스텐(WN), 질화탄탈륨(TaN), 질화티타늄(TiN) 중 하나를 포함하는 것을 특징으로 하는 반도체 소자의 금속배선.
- 제10항에 있어서,
다층의 구조를 갖는 것을 특징으로 하는 반도체 소자의 금속배선.
- 제10항에 있어서,
상기 금속 상에 형성된 보호막을 더 포함하는 것을 특징으로 하는 반도체 소자의 금속배선.
- 제19항에 있어서,
상기 보호막은 실리콘질화물(SiNx)을 포함하는 것을 특징으로 하는 반도체 소자의 금속배선.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR1020120015689A KR101307780B1 (ko) | 2012-02-16 | 2012-02-16 | 반도체 소자의 금속배선 및 그 제조방법 |
| US13/659,345 US20130214411A1 (en) | 2012-02-16 | 2012-10-24 | Metal interconnect of semiconductor device and method of manufacturing the same |
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| Application Number | Priority Date | Filing Date | Title |
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| KR1020120015689A KR101307780B1 (ko) | 2012-02-16 | 2012-02-16 | 반도체 소자의 금속배선 및 그 제조방법 |
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| KR20130094442A KR20130094442A (ko) | 2013-08-26 |
| KR101307780B1 true KR101307780B1 (ko) | 2013-09-12 |
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| US9786605B1 (en) | 2016-05-27 | 2017-10-10 | International Business Machines Corporation | Advanced through substrate via metallization in three dimensional semiconductor integration |
| US10312181B2 (en) | 2016-05-27 | 2019-06-04 | International Business Machines Corporation | Advanced through substrate via metallization in three dimensional semiconductor integration |
| US10396012B2 (en) | 2016-05-27 | 2019-08-27 | International Business Machines Corporation | Advanced through substrate via metallization in three dimensional semiconductor integration |
| US9721788B1 (en) | 2016-07-22 | 2017-08-01 | International Business Machines Corporation | Simultaneous formation of liner and metal conductor |
| US9728399B1 (en) | 2016-07-22 | 2017-08-08 | International Business Machines Corporation | Simultaneous formation of liner and metal conductor |
| US9646931B1 (en) | 2016-07-22 | 2017-05-09 | International Business Machines Corporation | Formation of liner and metal conductor |
| US9870993B1 (en) | 2016-07-22 | 2018-01-16 | International Business Machines Corporation | Simultaneous formation of liner and metal conductor |
| US11195748B2 (en) | 2017-09-27 | 2021-12-07 | Invensas Corporation | Interconnect structures and methods for forming same |
| KR102550099B1 (ko) | 2018-08-23 | 2023-06-30 | 삼성전자주식회사 | 가변 저항 메모리 소자 |
| KR102490356B1 (ko) * | 2018-11-20 | 2023-01-25 | 주식회사 원익아이피에스 | 기판 처리 장치의 내부재 처리 방법 |
| KR20250034611A (ko) * | 2023-09-04 | 2025-03-11 | 한화세미텍 주식회사 | 기판 처리 장치 및 방법 |
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| KR20070024865A (ko) * | 2005-08-31 | 2007-03-08 | 삼성전자주식회사 | 반도체 장치의 금속 배선 형성 방법 |
| KR20070081270A (ko) * | 2006-02-10 | 2007-08-16 | 주식회사 하이닉스반도체 | 반도체 소자의 제조방법 |
| KR20070087814A (ko) * | 2005-12-16 | 2007-08-29 | 동부일렉트로닉스 주식회사 | 반도체 소자의 구리 금속 배선 형성 방법 |
| KR20090086041A (ko) * | 2008-02-05 | 2009-08-10 | 니뽄 가이시 가부시키가이샤 | 플라즈마 반응기 |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5983828A (en) * | 1995-10-13 | 1999-11-16 | Mattson Technology, Inc. | Apparatus and method for pulsed plasma processing of a semiconductor substrate |
| US5893752A (en) * | 1997-12-22 | 1999-04-13 | Motorola, Inc. | Process for forming a semiconductor device |
| US7838428B2 (en) * | 2006-03-23 | 2010-11-23 | International Business Machines Corporation | Method of repairing process induced dielectric damage by the use of GCIB surface treatment using gas clusters of organic molecular species |
| US8336204B2 (en) * | 2009-07-27 | 2012-12-25 | International Business Machines Corporation | Formation of alloy liner by reaction of diffusion barrier and seed layer for interconnect application |
| US8420531B2 (en) * | 2011-06-21 | 2013-04-16 | International Business Machines Corporation | Enhanced diffusion barrier for interconnect structures |
| US8564132B2 (en) * | 2011-08-17 | 2013-10-22 | International Business Machines Corporation | Tungsten metallization: structure and fabrication of same |
-
2012
- 2012-02-16 KR KR1020120015689A patent/KR101307780B1/ko not_active Expired - Fee Related
- 2012-10-24 US US13/659,345 patent/US20130214411A1/en not_active Abandoned
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20070024865A (ko) * | 2005-08-31 | 2007-03-08 | 삼성전자주식회사 | 반도체 장치의 금속 배선 형성 방법 |
| KR20070087814A (ko) * | 2005-12-16 | 2007-08-29 | 동부일렉트로닉스 주식회사 | 반도체 소자의 구리 금속 배선 형성 방법 |
| KR20070081270A (ko) * | 2006-02-10 | 2007-08-16 | 주식회사 하이닉스반도체 | 반도체 소자의 제조방법 |
| KR20090086041A (ko) * | 2008-02-05 | 2009-08-10 | 니뽄 가이시 가부시키가이샤 | 플라즈마 반응기 |
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| Publication number | Publication date |
|---|---|
| KR20130094442A (ko) | 2013-08-26 |
| US20130214411A1 (en) | 2013-08-22 |
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