KR100741467B1 - 반도체 장치 및 그 제조방법 - Google Patents
반도체 장치 및 그 제조방법 Download PDFInfo
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- KR100741467B1 KR100741467B1 KR1020060065535A KR20060065535A KR100741467B1 KR 100741467 B1 KR100741467 B1 KR 100741467B1 KR 1020060065535 A KR1020060065535 A KR 1020060065535A KR 20060065535 A KR20060065535 A KR 20060065535A KR 100741467 B1 KR100741467 B1 KR 100741467B1
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- 239000004065 semiconductor Substances 0.000 title claims abstract description 107
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 17
- 239000000758 substrate Substances 0.000 claims abstract description 90
- 238000007254 oxidation reaction Methods 0.000 claims abstract description 74
- 230000003647 oxidation Effects 0.000 claims abstract description 73
- 230000002401 inhibitory effect Effects 0.000 claims abstract description 49
- 239000000463 material Substances 0.000 claims abstract description 30
- 238000005530 etching Methods 0.000 claims abstract description 27
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims description 80
- 238000000034 method Methods 0.000 claims description 75
- 229910052757 nitrogen Inorganic materials 0.000 claims description 40
- 229910052581 Si3N4 Inorganic materials 0.000 claims description 37
- HQVNEWCFYHHQES-UHFFFAOYSA-N silicon nitride Chemical compound N12[Si]34N5[Si]62N3[Si]51N64 HQVNEWCFYHHQES-UHFFFAOYSA-N 0.000 claims description 37
- 229910021420 polycrystalline silicon Inorganic materials 0.000 claims description 31
- 229920005591 polysilicon Polymers 0.000 claims description 31
- 125000006850 spacer group Chemical group 0.000 claims description 31
- 238000005121 nitriding Methods 0.000 claims description 19
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 16
- 229910052814 silicon oxide Inorganic materials 0.000 claims description 16
- 238000002955 isolation Methods 0.000 claims description 15
- 239000003963 antioxidant agent Substances 0.000 claims description 13
- 230000003078 antioxidant effect Effects 0.000 claims description 13
- 239000011810 insulating material Substances 0.000 claims description 11
- 239000000126 substance Substances 0.000 claims description 9
- 239000004020 conductor Substances 0.000 claims description 8
- 238000011049 filling Methods 0.000 claims description 8
- 238000000059 patterning Methods 0.000 claims description 8
- 238000002347 injection Methods 0.000 claims description 5
- 239000007924 injection Substances 0.000 claims description 5
- 230000001590 oxidative effect Effects 0.000 claims description 2
- 239000010410 layer Substances 0.000 description 157
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 18
- 229910052710 silicon Inorganic materials 0.000 description 16
- 239000010703 silicon Substances 0.000 description 16
- 230000000903 blocking effect Effects 0.000 description 15
- 238000001039 wet etching Methods 0.000 description 11
- 238000003860 storage Methods 0.000 description 10
- KRHYYFGTRYWZRS-UHFFFAOYSA-N Fluorane Chemical compound F KRHYYFGTRYWZRS-UHFFFAOYSA-N 0.000 description 9
- 239000003112 inhibitor Substances 0.000 description 8
- 239000007769 metal material Substances 0.000 description 8
- 239000007789 gas Substances 0.000 description 7
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- 150000002500 ions Chemical class 0.000 description 7
- 238000005498 polishing Methods 0.000 description 7
- -1 CoWP Inorganic materials 0.000 description 6
- 229910052751 metal Inorganic materials 0.000 description 6
- 239000002184 metal Substances 0.000 description 6
- 229920002120 photoresistant polymer Polymers 0.000 description 6
- 229910021332 silicide Inorganic materials 0.000 description 5
- FVBUAEGBCNSCDD-UHFFFAOYSA-N silicide(4-) Chemical compound [Si-4] FVBUAEGBCNSCDD-UHFFFAOYSA-N 0.000 description 5
- 238000001312 dry etching Methods 0.000 description 4
- 229910052735 hafnium Inorganic materials 0.000 description 4
- 238000009279 wet oxidation reaction Methods 0.000 description 4
- 238000000151 deposition Methods 0.000 description 3
- QPJSUIGXIBEQAC-UHFFFAOYSA-N n-(2,4-dichloro-5-propan-2-yloxyphenyl)acetamide Chemical compound CC(C)OC1=CC(NC(C)=O)=C(Cl)C=C1Cl QPJSUIGXIBEQAC-UHFFFAOYSA-N 0.000 description 3
- ITWBWJFEJCHKSN-UHFFFAOYSA-N 1,4,7-triazonane Chemical compound C1CNCCNCCN1 ITWBWJFEJCHKSN-UHFFFAOYSA-N 0.000 description 2
- 229910018072 Al 2 O 3 Inorganic materials 0.000 description 2
- 229910019044 CoSix Inorganic materials 0.000 description 2
- 229910003855 HfAlO Inorganic materials 0.000 description 2
- 229910004129 HfSiO Inorganic materials 0.000 description 2
- 229910005889 NiSix Inorganic materials 0.000 description 2
- BPQQTUXANYXVAA-UHFFFAOYSA-N Orthosilicate Chemical compound [O-][Si]([O-])([O-])[O-] BPQQTUXANYXVAA-UHFFFAOYSA-N 0.000 description 2
- 229910004479 Ta2N Inorganic materials 0.000 description 2
- ATJFFYVFTNAWJD-UHFFFAOYSA-N Tin Chemical compound [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 description 2
- 238000000137 annealing Methods 0.000 description 2
- 230000005684 electric field Effects 0.000 description 2
- VBJZVLUMGGDVMO-UHFFFAOYSA-N hafnium atom Chemical compound [Hf] VBJZVLUMGGDVMO-UHFFFAOYSA-N 0.000 description 2
- 125000004433 nitrogen atom Chemical group N* 0.000 description 2
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- 238000007669 thermal treatment Methods 0.000 description 1
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Abstract
Description
Claims (20)
- 반도체 기판을 노출하는 제 1 개구부를 구비하고 측벽을 갖는 마스크 패턴을 형성하는 것;상기 노출된 반도체 기판에 상기 제 1 개구부를 통해 산화 억제 물질을 도입하여, 산화 억제 영역을 형성하는 것;상기 마스크 패턴의 측벽을 식각하여, 상기 산화 억제 영역의 크기보다 확대된 제 2 개구부를 형성하는 것; 그리고상기 제 2 개구부 내의 상기 반도체 기판에 게이트 절연막을 형성하는 것을 포함하는 반도체 장치의 제조방법.
- 청구항 1에 있어서,상기 마스크 패턴을 형성하는 것은, 상기 반도체 기판 상에 산화막을 형성하고, 상기 산화막을 패터닝하여 상기 제 1 개구부를 형성하는 것을 포함하는 반도체 장치의 제조방법.
- 청구항 1에 있어서,상기 마스크 패턴을 형성하는 것은:상기 반도체 기판 상의 패드 산화막 및 상기 패드 산화막 상의 폴리실리콘 패턴을 형성하는 것;상기 폴리실리콘 패턴의 측벽을 산화하여 측벽 산화막을 형성하는 것;상기 측벽 산화막의 측벽에 상기 측벽 산화막에 식각 선택비를 갖는 물질을 포함하는 스페이서를 형성하는 것;상기 스페이서 사이를 실리콘 산화막으로 채우는 것; 그리고상기 폴리실리콘 패턴을 선택적으로 제거하는 것을 포함하는 반도체 장치의 제조방법.
- 청구항 3에 있어서,상기 마스크 패턴의 측벽을 식각하는 것은, 상기 측벽 산화막을 제거하는 것을 포함하는 반도체 장치의 제조방법.
- 청구항 1에 있어서,상기 마스크 패턴을 형성하는 것은, 상기 반도체 기판 상에 실리콘 질화막 패턴을 형성하고, 상기 반도체 기판 및 상기 실리콘 질화막 패턴의 상부면에 상기 실리콘 질화막에 식각 선택비를 갖는 절연막을 컨포말하게 형성하는 것을 포함하는 반도체 장치의 제조방법.
- 청구항 5에 있어서,상기 절연막은 중온 산화막인 반도체 장치의 제조방법.
- 청구항 5에 있어서,상기 절연막의 측벽에 상기 절연막에 식각 선택비를 갖는 스페이서를 형성하는 것; 그리고상기 스페이서를 식각 마스크로 상기 절연막을 식각하여 상기 반도체 기판을 노출하는 것을 더 포함하고, 상기 산화막 억제 물질을 주입하는 것은, 상기 스페이서를 주입 마스크로 수행하는 반도체 장치의 제조방법.
- 청구항 7에 있어서,상기 스페이서는 폴리 실리콘막을 포함하는 반도체 장치의 제조방법.
- 청구항 7에 있어서,상기 마스크 패턴의 측벽을 식각하는 것은, 상기 스페이서 및 상기 절연막을 선택적으로 제거하는 것을 포함하는 반도체 장치의 제조방법.
- 청구항 1에 있어서,상기 게이트 절연막을 형성하는 것은 열 산화 공정을 포함하는 반도체 장치의 제조방법.
- 청구항 1에 있어서,상기 제 2 개구부와 상기 제 1 개구부의 크기의 차이는 상기 제 2 개구부의 크기의 10% 이하인 반도체 장치의 제조방법.
- 청구항 1에 있어서,상기 산화 억제 물질을 도입하는 것은, 상기 노출된 반도체 기판의 표면을 질화 처리하는 것을 포함하는 반도체 장치의 제조방법.
- 청구항 1에 있어서,상기 게이트 절연막이 형성된 상기 제 2 개구부에 도전물질을 채워, 게이트 전극을 형성하는 것을 더 포함하는 반도체 장치의 제조방법.
- 청구항 1에 있어서,상기 마스크 패턴을 형성하는 것은:상기 반도체 기판에 예비 마스크 패턴을 형성하는 것;상기 예비 마스크 패턴을 식각 마스크로 상기 반도체 기판을 식각하여 트렌치를 형성하는 것;상기 트렌치에 절연물질을 채워, 소자분리 절연막을 형성하는 것; 그리고상기 예비 마스크 패턴을 제거하는 것을 포함하는 반도체 장치의 제조방법.
- 청구항 14에 있어서,상기 예비 마스크 패턴을 제거하는 것은, 동시에 상기 소자분리 절연막의 측 벽에 예비 마스크 패턴의 물질을 포함하는 스페이서를 형성하는 것을 포함하는 반도체 장치의 제조방법.
- 청구항 14에 있어서,상기 예비 마스크 패턴은 상기 절연물질과 식각 선택비를 갖는 물질을 포함하는 반도체 장치의 제조방법.
- 청구항 16에 있어서,상기 예비 마스크 패턴은 패드 산화막과 상기 패드 산화막 상의 실리콘 질화막을 포함하는 반도체 장치의 제조방법.
- 반도체 기판의 트렌치들에 채워진 소자분리막들;상기 트렌치들 사이의 상기 반도체 기판에 정의되고, 가장자리부에서 보다 중앙부에서 더 높은 농도를 갖는 산화 억제 물질을 포함하는 활성영역; 및상기 활성영역 상의 게이트 절연막을 포함하는 반도체 장치.
- 청구항 18에 있어서,상기 게이트 절연막의 두께는 상기 활성영역의 중앙부에서 보다 가장자리부에서 더 두꺼운 반도체 장치.
- 청구항 18에 있어서,상기 산화 억제 물질은 질소를 포함하는 반도체 장치.
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US11/806,338 US7759263B2 (en) | 2006-07-12 | 2007-05-31 | Methods for fabricating improved gate dielectrics |
US12/801,115 US7879737B2 (en) | 2006-07-12 | 2010-05-24 | Methods for fabricating improved gate dielectrics |
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KR100907181B1 (ko) * | 2007-09-19 | 2009-07-09 | 주식회사 동부하이텍 | 반도체 소자 및 이의 제조방법 |
US8338250B2 (en) * | 2009-01-15 | 2012-12-25 | Macronix International Co., Ltd. | Process for fabricating memory device |
US7960286B2 (en) * | 2009-06-17 | 2011-06-14 | Taiwan Semiconductor Manufacturing Company, Ltd. | Narrow channel width effect modification in a shallow trench isolation device |
WO2014198858A1 (en) * | 2013-06-14 | 2014-12-18 | Novo Nordisk A/S | Drug delivery device with dual layer spring |
US9711645B2 (en) * | 2013-12-26 | 2017-07-18 | International Business Machines Corporation | Method and structure for multigate FinFET device epi-extension junction control by hydrogen treatment |
KR102185277B1 (ko) | 2014-02-25 | 2020-12-01 | 삼성전자 주식회사 | 전송 게이트를 갖는 씨모스 이미지 센서 |
JP2020129654A (ja) * | 2019-01-18 | 2020-08-27 | ヘリオス バイオエレクトロニクス インコーポレイテッド | マルチレベルエッチングの方法、半導体センシングデバイス、および半導体センシングデバイスを製造するための方法 |
CN115188665A (zh) * | 2021-04-01 | 2022-10-14 | 中芯国际集成电路制造(上海)有限公司 | 半导体结构及其形成方法 |
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