KR100733181B1 - 원자층 증착 방법 - Google Patents
원자층 증착 방법 Download PDFInfo
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- KR100733181B1 KR100733181B1 KR1020067019855A KR20067019855A KR100733181B1 KR 100733181 B1 KR100733181 B1 KR 100733181B1 KR 1020067019855 A KR1020067019855 A KR 1020067019855A KR 20067019855 A KR20067019855 A KR 20067019855A KR 100733181 B1 KR100733181 B1 KR 100733181B1
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- Prior art keywords
- precursor gas
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- 238000000034 method Methods 0.000 title claims description 48
- 238000000231 atomic layer deposition Methods 0.000 title claims description 24
- 239000002243 precursor Substances 0.000 claims abstract description 153
- 239000002356 single layer Substances 0.000 claims abstract description 138
- 239000000758 substrate Substances 0.000 claims abstract description 77
- 238000010926 purge Methods 0.000 claims description 31
- 239000004065 semiconductor Substances 0.000 claims description 17
- 238000000151 deposition Methods 0.000 claims description 16
- 230000008021 deposition Effects 0.000 claims description 11
- 239000010410 layer Substances 0.000 claims description 11
- 230000000977 initiatory effect Effects 0.000 claims description 4
- 230000015572 biosynthetic process Effects 0.000 claims description 2
- 239000000463 material Substances 0.000 abstract description 18
- 239000007789 gas Substances 0.000 description 132
- 210000002381 plasma Anatomy 0.000 description 44
- 238000012545 processing Methods 0.000 description 20
- 238000006243 chemical reaction Methods 0.000 description 5
- 239000010936 titanium Substances 0.000 description 5
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 description 4
- 238000004519 manufacturing process Methods 0.000 description 4
- 229910052719 titanium Inorganic materials 0.000 description 4
- 239000001307 helium Substances 0.000 description 3
- 229910052734 helium Inorganic materials 0.000 description 3
- SWQJXJOGLNCZEY-UHFFFAOYSA-N helium atom Chemical compound [He] SWQJXJOGLNCZEY-UHFFFAOYSA-N 0.000 description 3
- 239000011261 inert gas Substances 0.000 description 2
- 150000002500 ions Chemical class 0.000 description 2
- 229910052751 metal Inorganic materials 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- TWNQGVIAIRXVLR-UHFFFAOYSA-N oxo(oxoalumanyloxy)alumane Chemical compound O=[Al]O[Al]=O TWNQGVIAIRXVLR-UHFFFAOYSA-N 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 230000009467 reduction Effects 0.000 description 2
- 238000003892 spreading Methods 0.000 description 2
- 230000007480 spreading Effects 0.000 description 2
- JLTRXTDYQLMHGR-UHFFFAOYSA-N trimethylaluminium Chemical compound C[Al](C)C JLTRXTDYQLMHGR-UHFFFAOYSA-N 0.000 description 2
- 229910018072 Al 2 O 3 Inorganic materials 0.000 description 1
- ATJFFYVFTNAWJD-UHFFFAOYSA-N Tin Chemical group [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 description 1
- 238000013459 approach Methods 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 239000006227 byproduct Substances 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 125000001309 chloro group Chemical group Cl* 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 239000003989 dielectric material Substances 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 239000012467 final product Substances 0.000 description 1
- 238000007429 general method Methods 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 150000002736 metal compounds Chemical class 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
- 229910052715 tantalum Inorganic materials 0.000 description 1
- GUVRBAGPIYLISA-UHFFFAOYSA-N tantalum atom Chemical compound [Ta] GUVRBAGPIYLISA-UHFFFAOYSA-N 0.000 description 1
- 238000007740 vapor deposition Methods 0.000 description 1
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- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C16/00—Chemical coating by decomposition of gaseous compounds, without leaving reaction products of surface material in the coating, i.e. chemical vapour deposition [CVD] processes
- C23C16/22—Chemical coating by decomposition of gaseous compounds, without leaving reaction products of surface material in the coating, i.e. chemical vapour deposition [CVD] processes characterised by the deposition of inorganic material, other than metallic material
- C23C16/30—Deposition of compounds, mixtures or solid solutions, e.g. borides, carbides, nitrides
- C23C16/38—Borides
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- H01L21/18—Manufacture or treatment of semiconductor devices or of parts thereof the devices having potential barriers, e.g. a PN junction, depletion layer or carrier concentration layer the devices having semiconductor bodies comprising elements of Group IV of the Periodic Table or AIIIBV compounds with or without impurities, e.g. doping materials
- H01L21/20—Deposition of semiconductor materials on a substrate, e.g. epitaxial growth solid phase epitaxy
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- C23C16/00—Chemical coating by decomposition of gaseous compounds, without leaving reaction products of surface material in the coating, i.e. chemical vapour deposition [CVD] processes
- C23C16/22—Chemical coating by decomposition of gaseous compounds, without leaving reaction products of surface material in the coating, i.e. chemical vapour deposition [CVD] processes characterised by the deposition of inorganic material, other than metallic material
- C23C16/30—Deposition of compounds, mixtures or solid solutions, e.g. borides, carbides, nitrides
- C23C16/40—Oxides
- C23C16/403—Oxides of aluminium, magnesium or beryllium
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- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C16/00—Chemical coating by decomposition of gaseous compounds, without leaving reaction products of surface material in the coating, i.e. chemical vapour deposition [CVD] processes
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- C23C16/00—Chemical coating by decomposition of gaseous compounds, without leaving reaction products of surface material in the coating, i.e. chemical vapour deposition [CVD] processes
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- C23C16/50—Chemical coating by decomposition of gaseous compounds, without leaving reaction products of surface material in the coating, i.e. chemical vapour deposition [CVD] processes characterised by the method of coating using electric discharges
- C23C16/515—Chemical coating by decomposition of gaseous compounds, without leaving reaction products of surface material in the coating, i.e. chemical vapour deposition [CVD] processes characterised by the method of coating using electric discharges using pulsed discharges
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- H01L21/31683—Inorganic layers composed of oxides or glassy oxides or oxide based glass formed by oxidation of metallic layers, e.g. Al deposited on the body, e.g. formation of multi-layer insulating structures
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Abstract
Description
Claims (28)
- 원자층 증착 방법에 있어서, 상기 방법은- 반도체 기판을 증착 챔버 내에 배치하는 단계와,- 상기 기판 위에 제 1 단층을 형성하기 위해 상기 챔버 내부의 기판으로 제 1 전구체 기체를 흐르게 하는 단계와, 그리고- 상기 제 1 단층을 형성한 이후, 상기 제 1 단층과 조성물이 다른 제 2 단층을 상기 기판 위에 형성하기 위하여 상기 챔버 내부의 플라즈마 조건 하에서 제 2 전구체 기체를 기판으로 흐르게 하는 단계로서, 이때 상기 제 2 전구체 기체는 상기 제 1 전구체 기체와 조성물이 다르며, 상기 챔버 내부의 제 2 전구체 기체의 생성은 상기 챔버로 인가되는 에너지의 제 2 인가된 파워로부터 발생하고, 그리고 상기 에너지의 상기 제 2 인가된 파워를 인가하기 전에 상기 에너지의 정상 상태의 제 1 인가된 파워를 인가하는 단계와, 상기 정상 상태의 제 1 인가된 파워를 제 2 인가된 파워보다 작게 하는 단계와, 그리고 상기 제 1 인가된 파워를 상기 제 2 인가된 파워까지 증가시키는 단계를 더 포함하는 상기 제 2 전구체 기체를 흐르게 하는 단계를 포함하되,상기 제 2 전구체 기체를 흐르게 하는 단계를 시작하기 전에 상기 제 1 인가된 파워를 증가시키는 단계를 시작하는 것을 특징으로 하는 원자층 증착 방법.
- 제 1 항에 있어서, 상기 제 1 인가된 파워를 증가시키는 단계는 연속적인 것을 특징으로 하는 원자층 증착 방법.
- 제 1 항에 있어서, 이때 상기 정상 상태의 제 1 파워는 상기 제 2 전구체 기 체의 흐름으로부터 플라즈마를 생성하기에 불충분한 것을 특징으로 하는 원자층 증착 방법.
- 제 1 항에 있어서, 이때 상기 정상 상태의 제 1 파워는 상기 제 1 전구체 기체의 흐름으로부터 플라즈마를 생성하기에 불충분한 것을 특징으로 하는 원자층 증착 방법.
- 제 1 항에 있어서, 상기 방법은 제 1 전구체 흐름 동안 정상 상태의 제 1 파워를 인가하는 단계를 포함하는 것을 특징으로 하는 원자층 증착 방법.
- 제 5 항에 있어서, 이때 상기 정상 상태의 제 1 파워는 상기 제 1 전구체 기체의 흐름으로부터 플라즈마를 생성하기에 불충분한 것을 특징으로 하는 원자층 증착 방법.
- 제 1 항에 있어서, 상기 방법은 상기 제 1 전구체 기체 흐름과 제 2 전구체 기체 흐름 중간에 상기 챔버로 비활성 퍼지 기체를 흐르게 하는 단계를 포함하는 것을 특징으로 하는 원자층 증착 방법.
- 제 7 항에 있어서, 상기 방법은 상기 비활성 퍼지 기체의 흐름 동안 상기 정상 상태의 제 1 파워를 인가하는 단계를 포함하는 것을 특징으로 하는 원자층 증착 방법.
- 제 7 항에 있어서, 상기 방법은 상기 제 2 전구체 기체 흐름 이후에 상기 챔버로 비활성 퍼지 기체를 흐르게 하고, 상기 제 1 전구체 기체 흐름과 제 2 전구체 기체 흐름 중간에 상기 비활성 퍼지 기체 흐름 동안 정상 상태의 제 1 파워를 인가하며, 그리고 상기 제 2 전구체 흐름 이후에 상기 비활성 퍼지 기체 흐름 동안 상기 정상 상태의 제 1 파워를 인가하는 단계를 포함하는 것을 특징으로 하는 원자층 증착 방법.
- 제 1 항에 있어서, 이때 상기 플라즈마 조건은 표면 마이크로파 플라즈마를 포함하는 것을 특징으로 하는 원자층 증착 방법.
- 삭제
- 삭제
- 삭제
- 제 1 항에 있어서, 제 2 전구체 기체의 흐름을 중단한 이후에 상기 제 2 인가된 파워로 증가시킨 파워를 상기 정상 상태의 제 1 인가된 파워로 감소시키는 단계를 포함하는 것을 특징으로 하는 원자층 증착 방법.
- 제 1 항에 있어서, 제 2 전구체 기체의 흐름을 중단하기 전에 상기 제 2 인가된 파워로 증가시킨 파워를 상기 정상 상태의 제 1 인가된 파워로 감소시키는 단계를 포함하는 것을 특징으로 하는 원자층 증착 방법.
- 제 1 항에 있어서, 이때 상기 제 1 전구체 기체는 TiCl4를 포함하고, 상기 제 1 단층은 TiClx를 포함하며, 그리고 상기 제 2 전구체 기체는 H2를 포함하는 것을 특징으로 하는 원자층 증착 방법.
- 원자층 증착 방법에 있어서, 상기 방법은- 반도체 기판을 증착 챔버 내에 배치하는 단계와,- 상기 반도체 기판을 갖는 상기 챔버로 베이스 파워 레벨의 에너지를 인가하는 단계와,- 베이스 파워 레벨의 에너지를 인가하는 동안, 상기 챔버 내부의 넌-플라즈마(non-plasma) 조건 하에서 상기 기판 위에 제 1 단층을 형성하도록 상기 챔버 내부의 기판에 제 1 전구체 기체를 흐르게 하는 단계와,- 제 1 단층의 형성 이후, 상기 베이스 파워 레벨의 에너지를 상기 챔버 내부에 플라즈마를 생성할 수 있는 플라즈마 가능 파워 레벨까지 상승시키는 단계와,- 상기 제 1 단층과 조성물이 다른 제 2 단층을 기판 위에 형성하도록 상기 제 1 단층에 대하여 상기 제 2 전구체 기체를 갖는 플라즈마를 형성하기 위하여, 상기 플라즈마 가능 파워 레벨의 에너지가 상기 챔버에 인가되는 동안 상기 챔버 내부의 기판으로 제 2 전구체 기체를 흐르게 하는 단계로서, 상기 제 2 전구체 기체의 흐름이 개시되기 전에 상기 베이스 파워 레벨의 에너지를 상승시키는 단계를 개시하는 상기 제 2 전구체 기체를 흐르게 하는 단계와, 그리고- 상기 제 2 단층이 형성된 이후, 상기 플라즈마 가능 파워 레벨의 에너지를 상기 베이스 파워 레벨로 감소시키며 이후 상기 제 2 단층 위로 또 다른 단층을 증착시키는 단계를 포함하는 것을 특징으로 하는 원자층 증착 방법.
- 제 17 항에 있어서, 이때 상기 베이스 파워 레벨의 에너지를 상승시키는 단계는 연속적인 것을 특징으로 하는 원자층 증착 방법.
- 제 17 항에 있어서, 상기 방법은 상기 제 1 전구체 기체 흐름과 제 2 전구체 기체 흐름 중간에 상기 챔버로 비활성 퍼지 기체를 흐르게 하는 단계를 포함하는 것을 특징으로 하는 원자층 증착 방법.
- 제 19 항에 있어서, 상기 방법은 상기 비활성 퍼지 기체 흐름 동안 베이스 파워 레벨의 에너지를 인가하는 단계를 포함하는 것을 특징으로 하는 원자층 증착 방법.
- 제 19 항에 있어서, 상기 방법은- 상기 제 2 전구체 기체 흐름 이후 상기 챔버로 비활성 퍼지 기체를 흐르게 하는 단계와,- 상기 제 1 전구체 기체 흐름과 제 2 전구체 기체 흐름 중간에 상기 비활성 퍼지 기체 흐름 동안 베이스 파워 레벨의 에너지를 인가하는 단계와, 그리고- 상기 제 2 전구체 흐름 이후 상기 비활성 퍼지 기체 흐름 동안 상기 베이스 파워 레벨의 에너지를 인가하는 단계를 포함하는 것을 특징으로 하는 원자층 증착 방법.
- 제 17 항에 있어서, 이때 상기 플라즈마는 표면 마이크로파 플라즈마를 포함하는 것을 특징으로 하는 원자층 증착 방법.
- 삭제
- 삭제
- 삭제
- 제 17 항에 있어서, 상기 방법은 상기 제 2 전구체 기체 흐름을 중단한 이후에 상기 플라즈마 가능 파워 레벨의 에너지를 감소시키는 단계를 개시하는 것을 포함하는 것을 특징으로 하는 원자층 증착 방법.
- 제 17 항에 있어서, 상기 방법은 상기 제 2 전구체 기체 흐름을 중단하기 전에 상기 플라즈마 가능 파워 레벨의 에너지를 감소시키는 단계를 개시하는 단계를 포함하는 것을 특징으로 하는 원자층 증착 방법.
- 제 17 항에 있어서, 이때 상기 제 1 전구체 기체는 TiCl4를 포함하고, 상기 제 1 단층은 TiClx를 포함하며, 그리고 상기 제 2 전구체 기체는 H2를 포함하는 것을 특징으로 하는 원자층 증착 방법.
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KR100704086B1 (ko) | 2007-04-06 |
US7115529B2 (en) | 2006-10-03 |
EP1561239B1 (en) | 2011-04-27 |
KR20060105006A (ko) | 2006-10-09 |
JP2006505696A (ja) | 2006-02-16 |
ATE507579T1 (de) | 2011-05-15 |
US7402518B2 (en) | 2008-07-22 |
CN1739188A (zh) | 2006-02-22 |
CN100483636C (zh) | 2009-04-29 |
US20060029738A1 (en) | 2006-02-09 |
US7022605B2 (en) | 2006-04-04 |
KR100719644B1 (ko) | 2007-05-18 |
US20060172534A1 (en) | 2006-08-03 |
KR20050074581A (ko) | 2005-07-18 |
DE60336920D1 (de) | 2011-06-09 |
EP1561239A2 (en) | 2005-08-10 |
US7576012B2 (en) | 2009-08-18 |
AU2003290815A8 (en) | 2004-06-03 |
US20040092132A1 (en) | 2004-05-13 |
KR20060110378A (ko) | 2006-10-24 |
TW200424350A (en) | 2004-11-16 |
TWI257438B (en) | 2006-07-01 |
US20050260854A1 (en) | 2005-11-24 |
AU2003290815A1 (en) | 2004-06-03 |
WO2004044963B1 (en) | 2004-12-23 |
WO2004044963A2 (en) | 2004-05-27 |
WO2004044963A3 (en) | 2004-11-25 |
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