KR102186873B1 - 반도체 장치 및 그 제조 방법 - Google Patents
반도체 장치 및 그 제조 방법 Download PDFInfo
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- KR102186873B1 KR102186873B1 KR1020147022890A KR20147022890A KR102186873B1 KR 102186873 B1 KR102186873 B1 KR 102186873B1 KR 1020147022890 A KR1020147022890 A KR 1020147022890A KR 20147022890 A KR20147022890 A KR 20147022890A KR 102186873 B1 KR102186873 B1 KR 102186873B1
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- interlayer insulating
- layer
- film
- wiring
- insulating film
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Abstract
Description
도 2는 일 실시형태의 반도체 장치의 제조 공정 중의 주요부 단면도이다.
도 3은 도 2에 계속되는 반도체 장치의 제조 공정 중의 주요부 단면도이다.
도 4는 도 3에 계속되는 반도체 장치의 제조 공정 중의 주요부 단면도이다.
도 5는 도 4에 계속되는 반도체 장치의 제조 공정 중의 주요부 단면도이다.
도 6은 도 5에 계속되는 반도체 장치의 제조 공정 중의 주요부 단면도이다.
도 7은 일 실시 형태의 반도체 장치의 층간 절연막의 CN-강도 분포도이다.
도 8은 도 6에 계속되는 반도체 장치의 제조 공정 중의 주요부 단면도이다.
도 9는 도 8에 계속되는 반도체 장치의 제조 공정 중의 주요부 단면도이다.
도 10은 도 9에 계속되는 반도체 장치의 제조 공정 중의 주요부 단면도이다.
도 11은 도 10에 계속되는 반도체 장치의 제조 공정 중의 주요부 단면도이다.
도 12는 도 11에 계속되는 반도체 장치의 제조 공정 중의 주요부 단면도이다.
도 13은 도 12에 계속되는 반도체 장치의 제조 공정 중의 주요부 단면도이다.
도 14는 일 실시 형태의 반도체 장치의 층간 절연막의 CN-강도비와 TDDB 수명의 관계를 나타내는 그래프이다.
도 15는 제2 실시 형태의 반도체 장치의 제조 방법에 관한 가스 흐름도이다.
도 16은 제2 실시 형태에 관한 층간 절연막의 CN-강도 분포도이다.
도 17은 제2 실시 형태의 반도체 장치의 제조 방법에 관한 가스 흐름도의 변형예이다.
도 18은 제3 실시 형태에 관한 층간 절연막의 CN-강도 분포도이다.
도 19는 제4 실시 형태에 관한 반도체 장치의 주요부 단면도이다.
도 20은 제4 실시 형태에 관한 절연성 배리어막의 CN-강도 분포도이다.
도 21은 제4 실시 형태의 반도체 장치의 제조 방법에 관한 가스 흐름도이다.
도 22는 제4 실시 형태에 관한 절연성 배리어막의 CN-강도 분포도의 변형예이다.
BR1, BR2 : 절연성 배리어막
BR11, BR12, BR21, BR22 : 서브 절연성 배리어층
CU1, CU2 : 동막
CBR1, CBR2 : 도전성 배리어막
DM1, DM2 : 대미지층
ER1, ER2 : 전계 완화층
EST1, EST2 : 에칭 스토퍼막
INS1, INS2, INS3 : 층간 절연막
INS21, INS31, INS32 : 절연막
M1W, M2W : 배선
M1V, M2V : 플래그 전극
NCH, PCH : 채널 영역
NG, PG : 게이트 전극
NGI, PGI : 게이트 절연막
NSD, PSD : 소스 영역 또는 드레인 영역
NW : N형 웰 영역
PR1, PR2, PR3, PR4 : 레지스트막
PW : P형 웰 영역
Qn : N형 MISFET
Qp : P형 MISFET
SUB : P형 반도체 기판
SIL : 실리사이드막
ST : 소자 분리막
VG1, VG2 : 콘택트 홀
WG1, WG2 : 배선 홈
Claims (20)
- 반도체 기판과,
상기 반도체 기판 위에 형성되고, 주면을 가지는 층간 절연막과,
상기 층간 절연막 내부에 매립되고, 서로 인접하는 제1 배선 및 제2 배선과,
상기 제1 배선과 상기 제2 배선 사이에 위치하고, 상기 층간 절연막의 상기 주면에 형성된, 암모니아 플라즈마 처리에 의해 손상된 대미지층과,
상기 대미지층의 아래쪽에 있어서 상기 층간 절연막에 형성된 전계 완화층을 가지고,
상기 제1 배선과 상기 제2 배선은 주로 동막으로 이루어지고,
상기 대미지층과 상기 전계 완화층은 질소를 함유하는 층이고, 상기 전계 완화층은 상기 층간 절연막의 표면 전계를 완화시키기 위해 상기 대미지층보다 질소 농도가 더 높아지도록 형성된 반도체 장치. - 제1항에 있어서,
상기 층간 절연막은 비유전율이 3.0 이하인 절연막으로 이루어지는 반도체 장치. - 제2항에 있어서,
상기 층간 절연막은 SiCOH막으로 이루어지는 반도체 장치. - 제1항에 있어서,
상기 대미지층은 상기 층간 절연막의 상기 주면으로부터 깊이 4nm까지의 범위에 존재하는 반도체 장치. - 제1항에 있어서,
상기 전계 완화층은 질소 농도의 피크 영역을 가지는 반도체 장치. - 제5항에 있어서,
상기 질소 농도의 피크 영역은 상기 층간 절연막의 상기 주면으로부터 5 내지 20nm의 범위에 위치하는 반도체 장치. - 제1항에 있어서,
상기 전계 완화층은 상기 층간 절연막의 상기 주면을 기준으로 하여 상기 제1 배선의 두께의 1/2보다 얕은 위치에 구비되어 있는 반도체 장치. - 반도체 기판과,
상기 반도체 기판 위에 형성되고, 제1 주면을 가지는 층간 절연막과,
상기 층간 절연막 내부에 매립되고, 서로 인접하는 제1 배선 및 제2 배선과,
상기 제1 배선과 상기 제2 배선 사이에 위치하고, 상기 층간 절연막의 상기 제1 주면에 형성된, 암모니아 플라즈마 처리에 의해 손상된 대미지층과,
상기 제1 배선, 상기 제2 배선 및 상기 대미지층과 접촉하고, 상기 제1 배선, 상기 제2 배선 및 상기 층간 절연막을 피복하는 절연성 배리어막을 가지고,
상기 제1 배선과 상기 제2 배선은 주로 동막으로 이루어지고,
상기 절연성 배리어막은 질소를 함유하는 절연막이며, 상기 대미지층과 접촉하는 제1 표면과 상기 제1 표면과 반대측의 제2 표면을 가지고, 상기 제1 표면의 질소 농도보다 높은 질소 농도를 가지는 제1 영역을 구비하고, 상기 질소 농도가 높은 제1 영역은 상기 제2 표면측에 위치하고,
상기 대미지층의 아래쪽에 있어서 상기 층간 절연막 내부에 전계 완화층을 가지고, 상기 전계 완화층은 상기 층간 절연막의 표면 전계를 완화시키기 위해 상기 대미지층보다 질소 농도가 더 높아지도록 형성된 반도체 장치. - 삭제
- 제8항에 있어서,
상기 절연성 배리어막의 질소 농도는 상기 제1 표면으로부터 상기 제2 표면을 향하여 늘어나고 있는 반도체 장치. - 제8항에 있어서,
상기 층간 절연막은 비유전율이 3.0 이하인 절연막으로 이루어지는 반도체 장치. - 제11항에 있어서,
상기 층간 절연막은 SiCOH막으로 이루어지는 반도체 장치. - 삭제
- 삭제
- (a) 반도체 기판을 준비하는 공정,
(b) 상기 반도체 기판 위에 제1 주면을 가지며 또 소정의 막 두께를 가지는 층간 절연막을 형성하는 공정,
(c) 상기 층간 절연막의 상기 제1 주면에 제1 배선 홈 및 제2 배선 홈을 형성하는 공정,
(d) 상기 제1 배선 홈 내부 및 제2 배선 홈 내부에 선택적으로 동막을 구비하여 제1 배선 및 제2 배선을 형성하는 공정,
(e) 상기 제1 배선, 상기 제2 배선 및 상기 층간 절연막의 상기 제1 주면에 암모니아를 함유하는 플라스마 처리를 실시하는 공정을 가지고,
상기 공정(b)에 있어서 상기 층간 절연막에는 상기 제1 주면보다 깊은 위치에 전계 완화층이 구비되고,
상기 공정(e)에 있어서 상기 층간 절연막의 상기 제1 주면에는 암모니아 플라즈마 처리에 의해 손상된 대미지층이 형성되고,
상기 전계 완화층은 상기 층간 절연막의 표면 전계를 완화시키기 위해 상기 대미지층보다 질소 농도가 더 높아지도록 형성된 반도체 장치의 제조 방법. - 제15항에 있어서,
상기 전계 완화층과 상기 대미지층은 상기 층간 절연막보다 질소 농도가 큰 층인 반도체 장치의 제조 방법. - 제16항에 있어서,
상기 전계 완화층은 상기 층간 절연막을 형성한 후, 상기 층간 절연막 내부에 질소를 이온 주입함으로써 형성하는 반도체 장치의 제조 방법. - 제16항에 있어서,
상기 층간 절연막은 SiCOH막으로 이루어지며, 상기 SiCOH막은 유기 실란 가스 및 산화 가스를 사용한 CVD법으로 형성하고,
상기 SiCOH막 형성 공정의 도중에 암모니아 가스를 첨가함으로써 상기 SiCOH막 내부에 상기 전계 완화층을 형성하는 반도체 장치의 제조 방법. - 제15항에 있어서,
상기 층간 절연막은 SiCOH막으로 이루어지며, 상기 SiCOH막은 유기 실란 가스 및 산화 가스를 사용한 CVD법으로 형성하고,
상기 SiCOH막 형성 공정의 도중에 산소계 가스의 유량을 증가시킴으로써 상기 SiCOH막 내부에 상기 전계 완화층을 형성하는 반도체 장치의 제조 방법. - 제15항에 있어서,
상기 공정(e) 후에,
(f) 상기 층간 절연막 위에 상기 제1 배선, 상기 제2 배선 및 상기 대미지층과 접하는 제1 표면과 상기 제1 표면과 반대측의 제2 표면을 가지는 절연성 배리어막을 형성하는 공정을 더 가지고,
상기 절연성 배리어막의 상기 제2 표면의 질소 농도는 상기 제1 표면의 질소 농도보다 큰 반도체 장치의 제조 방법.
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| US10679936B2 (en) | 2017-09-28 | 2020-06-09 | Taiwan Semiconductor Manufacturing Co., Ltd. | MIM structure |
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| DE102019120765B4 (de) * | 2018-09-27 | 2024-02-22 | Taiwan Semiconductor Manufacturing Co., Ltd. | Verfahren zum bilden eines halbleiterbauelements |
| US11164954B2 (en) * | 2019-06-10 | 2021-11-02 | Globalfoundries U.S. Inc. | Gate capping layers of semiconductor devices |
| US11699618B2 (en) * | 2020-01-24 | 2023-07-11 | Taiwan Semiconductor Manufacturing Co., Ltd. | Low-k dielectric damage prevention |
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| KR20230102294A (ko) | 2021-12-30 | 2023-07-07 | 삼성전자주식회사 | 반도체 장치 및 데이터 저장 시스템 |
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| CN111952281B (zh) | 2024-05-03 |
| US20160172298A1 (en) | 2016-06-16 |
| KR20160083654A (ko) | 2016-07-12 |
| TW201901902A (zh) | 2019-01-01 |
| TW201519393A (zh) | 2015-05-16 |
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| EP3809451B1 (en) | 2025-04-09 |
| JPWO2015068251A1 (ja) | 2017-03-09 |
| US9559052B2 (en) | 2017-01-31 |
| CN104919576A (zh) | 2015-09-16 |
| CN111952281A (zh) | 2020-11-17 |
| KR20210145856A (ko) | 2021-12-02 |
| US20150228586A1 (en) | 2015-08-13 |
| EP3067920A4 (en) | 2017-08-09 |
| US20170110399A1 (en) | 2017-04-20 |
| CN104919576B (zh) | 2020-09-04 |
| TWI669795B (zh) | 2019-08-21 |
| KR102332952B1 (ko) | 2021-12-01 |
| KR20200138419A (ko) | 2020-12-09 |
| US9281276B2 (en) | 2016-03-08 |
| KR102480116B1 (ko) | 2022-12-23 |
| EP3809451A1 (en) | 2021-04-21 |
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