KR101024961B1 - 절연막의 형성방법 - Google Patents
절연막의 형성방법 Download PDFInfo
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- KR101024961B1 KR101024961B1 KR1020080135471A KR20080135471A KR101024961B1 KR 101024961 B1 KR101024961 B1 KR 101024961B1 KR 1020080135471 A KR1020080135471 A KR 1020080135471A KR 20080135471 A KR20080135471 A KR 20080135471A KR 101024961 B1 KR101024961 B1 KR 101024961B1
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- South Korea
- Prior art keywords
- silicon
- film
- metal
- nitrogen
- silicon substrate
- Prior art date
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- 238000000034 method Methods 0.000 title claims abstract description 125
- 229910052710 silicon Inorganic materials 0.000 claims abstract description 235
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 claims abstract description 230
- 239000010703 silicon Substances 0.000 claims abstract description 200
- 229910052751 metal Inorganic materials 0.000 claims abstract description 167
- 239000002184 metal Substances 0.000 claims abstract description 165
- 239000000758 substrate Substances 0.000 claims abstract description 117
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims abstract description 101
- 229910052757 nitrogen Inorganic materials 0.000 claims abstract description 67
- 230000001590 oxidative effect Effects 0.000 claims abstract description 45
- 238000004544 sputter deposition Methods 0.000 claims abstract description 41
- 238000005121 nitriding Methods 0.000 claims abstract description 40
- -1 nitride silicate Chemical class 0.000 claims abstract description 33
- 239000012298 atmosphere Substances 0.000 claims abstract description 27
- 238000000151 deposition Methods 0.000 claims abstract description 15
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 74
- 229910052814 silicon oxide Inorganic materials 0.000 claims description 74
- 229910052735 hafnium Inorganic materials 0.000 claims description 36
- 239000007789 gas Substances 0.000 claims description 28
- 125000004433 nitrogen atom Chemical group N* 0.000 claims description 26
- 239000002344 surface layer Substances 0.000 claims description 18
- 125000004430 oxygen atom Chemical group O* 0.000 claims description 14
- 238000005546 reactive sputtering Methods 0.000 claims description 10
- 230000015572 biosynthetic process Effects 0.000 claims description 8
- 229910052726 zirconium Inorganic materials 0.000 claims description 7
- VBJZVLUMGGDVMO-UHFFFAOYSA-N hafnium atom Chemical compound [Hf] VBJZVLUMGGDVMO-UHFFFAOYSA-N 0.000 claims description 6
- QCWXUUIWCKQGHC-UHFFFAOYSA-N Zirconium Chemical compound [Zr] QCWXUUIWCKQGHC-UHFFFAOYSA-N 0.000 claims 2
- 229910052914 metal silicate Inorganic materials 0.000 abstract description 18
- 239000010408 film Substances 0.000 description 349
- 238000007254 oxidation reaction Methods 0.000 description 73
- 230000003647 oxidation Effects 0.000 description 58
- 125000004429 atom Chemical group 0.000 description 44
- 229910052760 oxygen Inorganic materials 0.000 description 42
- 239000001301 oxygen Substances 0.000 description 40
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 37
- BPQQTUXANYXVAA-UHFFFAOYSA-N Orthosilicate Chemical group [O-][Si]([O-])([O-])[O-] BPQQTUXANYXVAA-UHFFFAOYSA-N 0.000 description 20
- 239000000203 mixture Substances 0.000 description 14
- 239000012528 membrane Substances 0.000 description 12
- 238000006243 chemical reaction Methods 0.000 description 10
- 150000004767 nitrides Chemical class 0.000 description 10
- 238000009792 diffusion process Methods 0.000 description 9
- 239000012535 impurity Substances 0.000 description 9
- 238000004519 manufacturing process Methods 0.000 description 9
- 238000004140 cleaning Methods 0.000 description 7
- 238000007796 conventional method Methods 0.000 description 7
- 229910021421 monocrystalline silicon Inorganic materials 0.000 description 7
- 238000012545 processing Methods 0.000 description 7
- 239000002994 raw material Substances 0.000 description 7
- 229910052786 argon Inorganic materials 0.000 description 5
- 239000013078 crystal Substances 0.000 description 5
- 239000000463 material Substances 0.000 description 5
- 229910044991 metal oxide Inorganic materials 0.000 description 5
- 150000004706 metal oxides Chemical class 0.000 description 5
- 239000007800 oxidant agent Substances 0.000 description 5
- 238000004833 X-ray photoelectron spectroscopy Methods 0.000 description 4
- 230000008021 deposition Effects 0.000 description 4
- 238000010438 heat treatment Methods 0.000 description 4
- 229910052734 helium Inorganic materials 0.000 description 4
- FFUAGWLWBBFQJT-UHFFFAOYSA-N hexamethyldisilazane Chemical compound C[Si](C)(C)N[Si](C)(C)C FFUAGWLWBBFQJT-UHFFFAOYSA-N 0.000 description 4
- 229910052754 neon Inorganic materials 0.000 description 4
- MWUXSHHQAYIFBG-UHFFFAOYSA-N Nitric oxide Chemical compound O=[N] MWUXSHHQAYIFBG-UHFFFAOYSA-N 0.000 description 3
- VSZWPYCFIRKVQL-UHFFFAOYSA-N selanylidenegallium;selenium Chemical compound [Se].[Se]=[Ga].[Se]=[Ga] VSZWPYCFIRKVQL-UHFFFAOYSA-N 0.000 description 3
- 239000004065 semiconductor Substances 0.000 description 3
- XKRFYHLGVUSROY-UHFFFAOYSA-N Argon Chemical compound [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 description 2
- 229910052684 Cerium Inorganic materials 0.000 description 2
- MYMOFIZGZYHOMD-UHFFFAOYSA-N Dioxygen Chemical compound O=O MYMOFIZGZYHOMD-UHFFFAOYSA-N 0.000 description 2
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 2
- GQPLMRYTRLFLPF-UHFFFAOYSA-N Nitrous Oxide Chemical compound [O-][N+]#N GQPLMRYTRLFLPF-UHFFFAOYSA-N 0.000 description 2
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 description 2
- 229910004298 SiO 2 Inorganic materials 0.000 description 2
- MCMNRKCIXSYSNV-UHFFFAOYSA-N Zirconium dioxide Chemical compound O=[Zr]=O MCMNRKCIXSYSNV-UHFFFAOYSA-N 0.000 description 2
- 229910052782 aluminium Inorganic materials 0.000 description 2
- 239000012159 carrier gas Substances 0.000 description 2
- 239000000356 contaminant Substances 0.000 description 2
- 230000007423 decrease Effects 0.000 description 2
- 230000006866 deterioration Effects 0.000 description 2
- 229910001873 dinitrogen Inorganic materials 0.000 description 2
- 229910001882 dioxygen Inorganic materials 0.000 description 2
- 230000005284 excitation Effects 0.000 description 2
- 230000002349 favourable effect Effects 0.000 description 2
- 238000005468 ion implantation Methods 0.000 description 2
- 229910052743 krypton Inorganic materials 0.000 description 2
- 238000010030 laminating Methods 0.000 description 2
- 229910052747 lanthanoid Inorganic materials 0.000 description 2
- 229910052746 lanthanum Inorganic materials 0.000 description 2
- 239000010410 layer Substances 0.000 description 2
- 150000002739 metals Chemical class 0.000 description 2
- QJGQUHMNIGDVPM-UHFFFAOYSA-N nitrogen group Chemical group [N] QJGQUHMNIGDVPM-UHFFFAOYSA-N 0.000 description 2
- 229910052698 phosphorus Inorganic materials 0.000 description 2
- 239000011574 phosphorus Substances 0.000 description 2
- 239000012495 reaction gas Substances 0.000 description 2
- 229910052712 strontium Inorganic materials 0.000 description 2
- 229910052715 tantalum Inorganic materials 0.000 description 2
- 239000010409 thin film Substances 0.000 description 2
- 229910052719 titanium Inorganic materials 0.000 description 2
- 229910052724 xenon Inorganic materials 0.000 description 2
- 229910052727 yttrium Inorganic materials 0.000 description 2
- BSYNRYMUTXBXSQ-UHFFFAOYSA-N Aspirin Chemical compound CC(=O)OC1=CC=CC=C1C(O)=O BSYNRYMUTXBXSQ-UHFFFAOYSA-N 0.000 description 1
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- 238000000137 annealing Methods 0.000 description 1
- 239000003990 capacitor Substances 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 238000005229 chemical vapour deposition Methods 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 150000004696 coordination complex Chemical class 0.000 description 1
- 230000000593 degrading effect Effects 0.000 description 1
- 238000007323 disproportionation reaction Methods 0.000 description 1
- 239000002019 doping agent Substances 0.000 description 1
- 238000010292 electrical insulation Methods 0.000 description 1
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 description 1
- 239000010931 gold Substances 0.000 description 1
- 229910052737 gold Inorganic materials 0.000 description 1
- CJNBYAVZURUTKZ-UHFFFAOYSA-N hafnium(IV) oxide Inorganic materials O=[Hf]=O CJNBYAVZURUTKZ-UHFFFAOYSA-N 0.000 description 1
- 239000001257 hydrogen Substances 0.000 description 1
- 229910052739 hydrogen Inorganic materials 0.000 description 1
- 239000011261 inert gas Substances 0.000 description 1
- 150000002602 lanthanoids Chemical class 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000012299 nitrogen atmosphere Substances 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 230000035515 penetration Effects 0.000 description 1
- 230000001443 photoexcitation Effects 0.000 description 1
- 230000001698 pyrogenic effect Effects 0.000 description 1
- 230000000717 retained effect Effects 0.000 description 1
- 229910021332 silicide Inorganic materials 0.000 description 1
- FVBUAEGBCNSCDD-UHFFFAOYSA-N silicide(4-) Chemical compound [Si-4] FVBUAEGBCNSCDD-UHFFFAOYSA-N 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
- 238000009279 wet oxidation reaction Methods 0.000 description 1
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- H01L21/02142—Forming insulating materials on a substrate characterised by the type of layer, e.g. type of material, porous/non-porous, pre-cursors, mixtures or laminates characterised by the material of the layer the material containing silicon the material containing silicon and at least one metal element, e.g. metal silicate based insulators or metal silicon oxynitrides
- H01L21/02148—Forming insulating materials on a substrate characterised by the type of layer, e.g. type of material, porous/non-porous, pre-cursors, mixtures or laminates characterised by the material of the layer the material containing silicon the material containing silicon and at least one metal element, e.g. metal silicate based insulators or metal silicon oxynitrides the material containing hafnium, e.g. HfSiOx or HfSiON
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- H01L21/02159—Forming insulating materials on a substrate characterised by the type of layer, e.g. type of material, porous/non-porous, pre-cursors, mixtures or laminates characterised by the material of the layer the material containing silicon the material containing silicon and at least one metal element, e.g. metal silicate based insulators or metal silicon oxynitrides the material containing zirconium, e.g. ZrSiOx
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- H01L21/28158—Making the insulator
- H01L21/28167—Making the insulator on single crystalline silicon, e.g. using a liquid, i.e. chemical oxidation
- H01L21/28194—Making the insulator on single crystalline silicon, e.g. using a liquid, i.e. chemical oxidation by deposition, e.g. evaporation, ALD, CVD, sputtering, laser deposition
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- H01L21/02238—Forming insulating materials on a substrate characterised by the process for the formation of the insulating layer formation by a process other than a deposition process formation by oxidation, e.g. oxidation of the substrate of the semiconductor substrate or a semiconductor layer group IV semiconductor silicon in uncombined form, i.e. pure silicon
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- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L21/00—Processes or apparatus adapted for the manufacture or treatment of semiconductor or solid state devices or of parts thereof
- H01L21/02—Manufacture or treatment of semiconductor devices or of parts thereof
- H01L21/02104—Forming layers
- H01L21/02107—Forming insulating materials on a substrate
- H01L21/02296—Forming insulating materials on a substrate characterised by the treatment performed before or after the formation of the layer
- H01L21/02318—Forming insulating materials on a substrate characterised by the treatment performed before or after the formation of the layer post-treatment
- H01L21/02321—Forming insulating materials on a substrate characterised by the treatment performed before or after the formation of the layer post-treatment introduction of substances into an already existing insulating layer
- H01L21/02323—Forming insulating materials on a substrate characterised by the treatment performed before or after the formation of the layer post-treatment introduction of substances into an already existing insulating layer introduction of oxygen
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Abstract
Description
Claims (14)
- 실리콘 기판 위에 질화 금속 실리케이트를 포함한 절연막을 형성하는 방법으로서,상기 실리콘 기판 위에 금속 및 실리콘으로 이루어진 막을, 비산화 분위기 중에서 스퍼터링법을 이용해서 퇴적하는 제1의 공정과,상기 금속 및 실리콘으로 이루어진 막을, 적어도 질소원자를 포함하는 플라즈마를 이용하여 질화해서 질소, 금속 및 실리콘으로 이루어진 막을 형성하는 제2의 공정과,상기 질소, 금속 및 실리콘으로 이루어진 막을, 적어도 산소원자를 포함하는 플라즈마를 이용하고, 아몰퍼스 상태가 유지 가능한 온도에서 산화해서 질화 금속 실리케이트막을 형성하고,상기 실리콘 기체의 표층부를 산화하여 0.5nm이상 2.0nm이하의 실리콘 산화막을형성하는 제3의 공정을 포함한 것을 특징으로 하는 절연막의 형성방법.
- 제 1 항에 있어서,상기 금속은, 적어도 하프늄 및 지르코늄 중 어느 하나를 포함하는 것을 특징으로 하는 절연막의 형성방법.
- 제 1 항에 있어서,상기 제1의 공정의 종료로부터 상기 제2의 공정의 개시까지의 기간 동안, 상기 금속 및 실리콘으로 이루어진 막을, 비산화 분위기 중에서 유지하는 것을 더 포 함한 것을 특징으로 하는 절연막의 형성방법.
- 제 1 항에 있어서,상기 제 2의 공정에서, 적어도 질소 원자를 포함한 플라즈마를 이용해서 상기 금속 및 실리콘으로 이루어진 막을 질화하는 것을 더 포함한 것을 특징으로 하는 절연막의 형성방법.
- 제 1 항에 있어서,상기 제 3의 공정에서, 적어도 산소 원자를 포함한 플라즈마를 이용해서 상기 질소, 금속 및 실리콘으로 이루어진 막을 산화하는 것을 더 포함한 것을 특징으로 하는 절연막의 형성방법.
- 제 5 항에 있어서,상기 제 3의 공정에서, 마이크로파 플라즈마원을 이용해서 상기 질소, 금속 및 실리콘으로 이루어진 막을 산화하는 것을 더 포함한 것을 특징으로 하는 절연막의 형성방법.
- 제 1 항에 있어서,상기 제 3의 공정에서 상기 질소, 금속 및 실리콘으로 이루어진 막 아래의 상기 실리콘 기판의 표면을 산화해서 실리콘 산화막을 형성하는 것을 더 포함한 것을 특징으로 하는 절연막의 형성방법.
- 제 1 항에 있어서,상기 제1의 공정은, 상기 금속 및 실리콘으로 이루어진 막을 상기 실리콘 기체위에 퇴적하기 전에, 상기 실리콘 기판의 표면을 산화해서 0.5nm이상 2.0nm이하의실리콘 산화막을 형성하는 공정을 포함하고, 상기 실리콘 산화을 형성한 후, 상기 실리콘 산화막 위에 금속 및 실리콘으로 이루어진 막을 비산화 분위기 중에서 스퍼터링법에 의해 퇴적하는 것을 더 포함한 것을 특징으로 하는 절연막의 형성방법.
- 실리콘 기판 위에 질화 금속 실리케이트를 포함한 절연막을 형성하는 방법으로서,상기 실리콘 기판 위에 질소, 금속 및 실리콘으로 이루어진 막을, 비산화 분위기 중에서, 적어도 질소 원자를 포함한 가스를 이용한 리엑티브 스퍼터링법에 의해 퇴적하는 제1의 공정과,상기 질소, 금속 및 실리콘으로 이루어진 막을, 적어도 산소 원자를 포함하는 플라즈마를 이용하고, 아몰퍼스 상태가 유지 가능한 온도에서 산화해서 질화 금속 실리케이트막을 형성하고,상기 질소, 금속 및 실리콘으로 이루어진 막 아래의 상기 실리콘 기체의 표층부를 산화하여 0.5nm 이상 2.0nm이하의 실리콘 산화막을 형성하는 제2의 공정을 포함한 것을 특징으로 하는 절연막의 형성방법.
- 제 9 항에 있어서,상기 금속은, 적어도 하프늄 및 지르코늄 중 어느 하나를 포함하는 것을 특징으로 하는 절연막의 형성방법.
- 제 9 항에 있어서,상기 제 2의 공정에서, 적어도 산소 원자를 포함한 플라즈마를 이용해서 상기 질소, 금속 및 실리콘으로 이루어진 막을 산화하는 것을 더 포함한 것을 특징으로 하는 절연막의 형성방법.
- 제 11 항에 있어서,상기 제2의 공정에서, 마이크로파 플라즈마원을 이용해서 상기 질소, 금속 및 실리콘으로 이루어진 막을 산화하는 것을 더 포함한 것을 특징으로 하는 절연막의 형성방법.
- 삭제
- 제 9항 내지 제 12항 중 어느 하나의 항에 있어서,상기 제1의 공정에서, 상기 실리콘 기체의 표층부를 산화하여 0.5nm 이상 2.0nm이하의 실리콘 산화막을 형성하고, 상기 실리콘 산화막의 위에 상기 질소, 금속 및 실리콘으로 이루어진 막을 퇴적하는 것을 특징으로 하는 절연막의 형성방법.
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CN102007583B (zh) * | 2008-10-31 | 2013-02-13 | 佳能安内华股份有限公司 | 介电膜的制造方法、半导体装置的制造方法以及介电膜 |
JP4584356B2 (ja) * | 2008-12-26 | 2010-11-17 | キヤノンアネルバ株式会社 | 基板処理方法、基板処理装置、mos−fetの製造方法、不揮発メモリの製造方法、およびコンピュータ読み取り可能な記録媒体 |
JP5247619B2 (ja) * | 2009-07-28 | 2013-07-24 | キヤノンアネルバ株式会社 | 誘電体膜、誘電体膜を用いた半導体装置の製造方法及び半導体製造装置 |
JP5061354B2 (ja) * | 2009-09-25 | 2012-10-31 | 防衛省技術研究本部長 | 絶縁膜形成方法及び絶縁膜形成装置 |
CN102074469B (zh) * | 2009-11-25 | 2012-04-11 | 中国科学院微电子研究所 | 一种用于pmos器件的金属栅功函数的调节方法 |
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JP5937297B2 (ja) * | 2010-03-01 | 2016-06-22 | キヤノンアネルバ株式会社 | 金属窒化膜、該金属窒化膜を用いた半導体装置、および半導体装置の製造方法 |
CN102194880B (zh) * | 2010-03-05 | 2015-01-14 | 万国半导体股份有限公司 | 带有沟槽-氧化物-纳米管超级结的器件结构及制备方法 |
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JP5458177B2 (ja) | 2010-12-28 | 2014-04-02 | キヤノンアネルバ株式会社 | 半導体装置の製造方法および装置 |
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