KR101434345B1 - 성막 방법 및 성막 장치 - Google Patents
성막 방법 및 성막 장치 Download PDFInfo
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- KR101434345B1 KR101434345B1 KR1020110074510A KR20110074510A KR101434345B1 KR 101434345 B1 KR101434345 B1 KR 101434345B1 KR 1020110074510 A KR1020110074510 A KR 1020110074510A KR 20110074510 A KR20110074510 A KR 20110074510A KR 101434345 B1 KR101434345 B1 KR 101434345B1
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- 238000012545 processing Methods 0.000 claims abstract description 72
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- 229910052751 metal Inorganic materials 0.000 claims abstract description 30
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- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 25
- 239000010937 tungsten Substances 0.000 claims description 24
- 229910052721 tungsten Inorganic materials 0.000 claims description 24
- 229910052814 silicon oxide Inorganic materials 0.000 claims description 18
- WFKWXMTUELFFGS-UHFFFAOYSA-N tungsten Chemical compound [W] WFKWXMTUELFFGS-UHFFFAOYSA-N 0.000 claims description 18
- 239000006200 vaporizer Substances 0.000 claims description 12
- 238000010438 heat treatment Methods 0.000 claims description 11
- 229910052760 oxygen Inorganic materials 0.000 claims description 10
- -1 tungsten nitride Chemical class 0.000 claims description 7
- NRTOMJZYCJJWKI-UHFFFAOYSA-N Titanium nitride Chemical compound [Ti]#N NRTOMJZYCJJWKI-UHFFFAOYSA-N 0.000 claims description 6
- 239000011261 inert gas Substances 0.000 claims description 6
- 239000000463 material Substances 0.000 claims description 6
- FZHAPNGMFPVSLP-UHFFFAOYSA-N silanamine Chemical compound [SiH3]N FZHAPNGMFPVSLP-UHFFFAOYSA-N 0.000 claims description 5
- 238000009792 diffusion process Methods 0.000 claims description 4
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- 239000010936 titanium Substances 0.000 claims description 3
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- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 claims description 2
- 229910052715 tantalum Inorganic materials 0.000 claims description 2
- GUVRBAGPIYLISA-UHFFFAOYSA-N tantalum atom Chemical compound [Ta] GUVRBAGPIYLISA-UHFFFAOYSA-N 0.000 claims description 2
- MZLGASXMSKOWSE-UHFFFAOYSA-N tantalum nitride Chemical compound [Ta]#N MZLGASXMSKOWSE-UHFFFAOYSA-N 0.000 claims description 2
- 101000735417 Homo sapiens Protein PAPPAS Proteins 0.000 claims 1
- 102100034919 Protein PAPPAS Human genes 0.000 claims 1
- 230000008016 vaporization Effects 0.000 claims 1
- 229910052581 Si3N4 Inorganic materials 0.000 abstract 1
- HQVNEWCFYHHQES-UHFFFAOYSA-N silicon nitride Chemical compound N12[Si]34N5[Si]62N3[Si]51N64 HQVNEWCFYHHQES-UHFFFAOYSA-N 0.000 abstract 1
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- 238000010926 purge Methods 0.000 description 11
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- 239000010703 silicon Substances 0.000 description 11
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- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 6
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- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 2
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- 229910001220 stainless steel Inorganic materials 0.000 description 2
- 239000010935 stainless steel Substances 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- 229910001218 Gallium arsenide Inorganic materials 0.000 description 1
- BIVNKSDKIFWKFA-UHFFFAOYSA-N N-propan-2-yl-N-silylpropan-2-amine Chemical compound CC(C)N([SiH3])C(C)C BIVNKSDKIFWKFA-UHFFFAOYSA-N 0.000 description 1
- ATJFFYVFTNAWJD-UHFFFAOYSA-N Tin Chemical compound [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 description 1
- 239000010953 base metal Substances 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 239000000919 ceramic Substances 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 239000013078 crystal Substances 0.000 description 1
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- 238000001941 electron spectroscopy Methods 0.000 description 1
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- 125000002887 hydroxy group Chemical group [H]O* 0.000 description 1
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- 150000004767 nitrides Chemical class 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
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- 238000012546 transfer Methods 0.000 description 1
- GIRKRMUMWJFNRI-UHFFFAOYSA-N tris(dimethylamino)silicon Chemical compound CN(C)[Si](N(C)C)N(C)C GIRKRMUMWJFNRI-UHFFFAOYSA-N 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
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- H01L21/02263—Forming insulating materials on a substrate characterised by the process for the formation of the insulating layer formation by a deposition process deposition from the gas or vapour phase
- H01L21/02271—Forming insulating materials on a substrate characterised by the process for the formation of the insulating layer formation by a deposition process deposition from the gas or vapour phase deposition by decomposition or reaction of gaseous or vapour phase compounds, i.e. chemical vapour deposition
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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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Abstract
Description
도 1은 관련 기술의, 배치식의 성막 장치를 나타내는 개략도이다.
도 2는 본 발명의 실시 형태에 따른 성막 장치를 나타내는 구성도이다.
도 3은 본 발명의 실시 형태에 따른 성막 방법을 행할 때의 각 밸브의 동작을 나타내는 그래프이다.
도 4는 본 발명의 실시 형태에 따른 성막 방법으로 형성되는 다층 박막의 단면을 나타내는 확대 단면도이다.
도 5는 원료 가스의 홀드 기간과 1사이클당의 성막 레이트와의 관계를 나타내는 그래프이다.
도 6은 1사이클당의 성막 레이트와 텅스텐의 금속 산화막의 막두께와의 관계를 나타내는 그래프이다.
도 7은 금속 함유막과 산화 실리콘막과의 계면 근방에 있어서 금속 함유막이 산화되는 이유를 설명하기 위한 도면이다.
도 8은 1사이클당의 성막 레이트와 티탄 질화막의 금속 산화막의 막두께와의 관계를 나타내는 그래프이다.
Claims (15)
- 피(被)처리체를 수용할 수 있는 처리 용기와,
제1 개폐 밸브를 가져 상기 처리 용기 내에 원료 가스를 공급할 수 있는 원료 가스 공급계와,
제2 개폐 밸브를 가져 상기 처리 용기 내에 반응 가스를 공급할 수 있는 반응 가스 공급계와,
제3 개폐 밸브를 가져 상기 처리 용기 내의 분위기를 진공으로 배기할 수 있는 진공 배기계를 구비한 성막 장치를 이용하여, 표면에 금속 함유막이 형성된 상기 피처리체에 산화 실리콘막으로 이루어지는 박막을 형성하는 성막 방법에 있어서,
상기 진공 배기계의 상기 제3 개폐 밸브를 닫고, 상기 원료 가스 공급계의 상기 제1 개폐 밸브를 소정의 기간 열어 상기 원료 가스를 상기 처리 용기에 공급한 후에 닫고, 상기 제1 개폐 밸브를 소정의 기간 닫은 채 상기 처리 용기 내의 상기 원료 가스를 상기 피처리체의 표면에 흡착시키는 흡착 공정과,
상기 반응 가스 공급계의 상기 제2 개폐 밸브를 열어 상기 반응 가스를 상기 처리 용기에 공급하여 상기 반응 가스를 상기 원료 가스와 반응시킬 때 상기 반응 가스의 확산을 억제시켜 박막을 형성하는 반응 공정을, 사이에 간헐 기간을 두고 교대로 복수회 반복하고,
상기 반응 가스는, O3, O2, N2O, NO로 이루어지는 군으로부터 선택되는 하나 이상의 가스로 이루어지는 성막 방법. - 제1항에 있어서,
상기 간헐 기간에는, 상기 진공 배기계의 상기 제3 개폐 밸브를 열어 상기 처리 용기 내를 배기하는 배기 공정이 행해지는 성막 방법. - 제2항에 있어서,
상기 배기 공정에서는, 상기 처리 용기 내에 불활성 가스가 공급되는 성막 방법. - 제2항에 있어서,
상기 배기 공정에서는, 상기 처리 용기 내로의 모든 가스의 공급을 정지하고, 상기 처리 용기가 배기되는 성막 방법. - 제1항에 있어서,
상기 흡착 공정에 있어서의 상기 원료 가스 공급계의 상기 제1 개폐 밸브가 닫히는 상기 소정의 기간의 길이를 조정함으로써 상기 금속 함유막과 상기 박막과의 계면에 형성되어 있는, 상기 금속 함유막의 금속 산화막의 두께를 컨트롤하는 성막 방법. - 제5항에 있어서,
상기 소정의 기간의 길이가, 당해 소정의 기간 후의 상기 금속 산화막의 막두께가, 자연스럽게 형성되어 있는 상기 금속 산화막의 초기의 막두께 이하가 되는 길이인 성막 방법. - 제1항에 있어서,
상기 흡착 공정과 상기 반응 공정을 복수회 반복할 때의 1회의 사이클에 있어서의 성막 레이트는 0.11㎚/cycle 이상인 성막 방법. - 제1항에 있어서,
상기 원료 가스는, 아미노실란계 유기 소스로 이루어지는 성막 방법. - 제8항에 있어서,
상기 아미노실란계 유기 소스는 3DMAS이고, 상기 흡착 공정과 상기 반응 공정에서의 상기 피처리체의 온도가 550℃ 이상인 성막 방법. - 제8항에 있어서,
상기 아미노실란계 유기 소스는 DIPAS이고, 상기 흡착 공정과 상기 반응 공정에서의 상기 피처리체의 온도가 450℃ 이하인 성막 방법. - 제1항에 있어서,
상기 금속 함유막은, 텅스텐막, 텅스텐 질화막, 티탄막, 티탄 질화막, 탄탈막, 탄탈 질화막으로 이루어지는 군으로부터 선택되는 하나의 막인 성막 방법. - 제1항에 있어서,
상기 원료 가스는, 액체의 원료를 기화기로 기화함으로써 형성되는 성막 방법. - 제12항에 있어서,
상기 기화기가, 상기 액체 원료의 온도로 결정되는 증기압을 조정하여, 기화되는 원료의 양을 제어하는 원료 용기를 포함하는 성막 방법. - 삭제
- 피처리체를 수용할 수 있는 처리 용기와,
상기 피처리체를 보지(保持; holding)하는 보지부와,
상기 피처리체를 가열하는 가열부와,
제1 개폐 밸브를 가져 상기 처리 용기 내에 원료 가스를 공급할 수 있는 원료 가스 공급계와,
제2 개폐 밸브를 가져 상기 처리 용기 내에 반응 가스를 공급할 수 있는 반응 가스 공급계와,
제3 개폐 밸브를 가져 상기 처리 용기 내의 분위기를 진공으로 배기할 수 있는 진공 배기계와,
제1항에 기재된 성막 방법을 실행하도록 장치 전체를 제어하는 장치 제어부를 구비하는 성막 장치.
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