KR100568448B1 - 감소된 불순물을 갖는 고유전막의 제조방법 - Google Patents
감소된 불순물을 갖는 고유전막의 제조방법 Download PDFInfo
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- KR100568448B1 KR100568448B1 KR1020040026690A KR20040026690A KR100568448B1 KR 100568448 B1 KR100568448 B1 KR 100568448B1 KR 1020040026690 A KR1020040026690 A KR 1020040026690A KR 20040026690 A KR20040026690 A KR 20040026690A KR 100568448 B1 KR100568448 B1 KR 100568448B1
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- 238000004519 manufacturing process Methods 0.000 title claims abstract description 25
- 239000012535 impurity Substances 0.000 title abstract description 21
- 238000000034 method Methods 0.000 claims abstract description 69
- 229910052751 metal Inorganic materials 0.000 claims abstract description 49
- 239000002184 metal Substances 0.000 claims abstract description 49
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims abstract description 43
- 229910052814 silicon oxide Inorganic materials 0.000 claims abstract description 43
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 claims abstract description 37
- 229910052710 silicon Inorganic materials 0.000 claims abstract description 37
- 239000010703 silicon Substances 0.000 claims abstract description 37
- 239000004065 semiconductor Substances 0.000 claims abstract description 28
- 238000000231 atomic layer deposition Methods 0.000 claims abstract description 25
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- 238000012805 post-processing Methods 0.000 claims abstract description 8
- 239000012298 atmosphere Substances 0.000 claims description 59
- 238000010438 heat treatment Methods 0.000 claims description 49
- 229910052735 hafnium Inorganic materials 0.000 claims description 35
- VBJZVLUMGGDVMO-UHFFFAOYSA-N hafnium atom Chemical compound [Hf] VBJZVLUMGGDVMO-UHFFFAOYSA-N 0.000 claims description 29
- 229910000449 hafnium oxide Inorganic materials 0.000 claims description 28
- WIHZLLGSGQNAGK-UHFFFAOYSA-N hafnium(4+);oxygen(2-) Chemical compound [O-2].[O-2].[Hf+4] WIHZLLGSGQNAGK-UHFFFAOYSA-N 0.000 claims description 28
- 229910052739 hydrogen Inorganic materials 0.000 claims description 24
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 claims description 20
- 239000001257 hydrogen Substances 0.000 claims description 20
- 238000009832 plasma treatment Methods 0.000 claims description 17
- 230000003647 oxidation Effects 0.000 claims description 15
- 238000007254 oxidation reaction Methods 0.000 claims description 15
- 239000011261 inert gas Substances 0.000 claims description 14
- 238000005121 nitriding Methods 0.000 claims description 13
- 239000012299 nitrogen atmosphere Substances 0.000 claims description 7
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims description 6
- RVTZCBVAJQQJTK-UHFFFAOYSA-N oxygen(2-);zirconium(4+) Chemical compound [O-2].[O-2].[Zr+4] RVTZCBVAJQQJTK-UHFFFAOYSA-N 0.000 claims description 5
- 229910001928 zirconium oxide Inorganic materials 0.000 claims description 5
- 229910052757 nitrogen Inorganic materials 0.000 claims description 4
- QCWXUUIWCKQGHC-UHFFFAOYSA-N Zirconium Chemical compound [Zr] QCWXUUIWCKQGHC-UHFFFAOYSA-N 0.000 claims description 3
- 238000009279 wet oxidation reaction Methods 0.000 claims description 3
- 229910052726 zirconium Inorganic materials 0.000 claims description 3
- 229910052581 Si3N4 Inorganic materials 0.000 claims description 2
- HQVNEWCFYHHQES-UHFFFAOYSA-N silicon nitride Chemical compound N12[Si]34N5[Si]62N3[Si]51N64 HQVNEWCFYHHQES-UHFFFAOYSA-N 0.000 claims description 2
- BPQQTUXANYXVAA-UHFFFAOYSA-N Orthosilicate Chemical compound [O-][Si]([O-])([O-])[O-] BPQQTUXANYXVAA-UHFFFAOYSA-N 0.000 abstract description 16
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- 239000002994 raw material Substances 0.000 description 15
- 230000001590 oxidative effect Effects 0.000 description 14
- 229910052799 carbon Inorganic materials 0.000 description 11
- 239000000460 chlorine Substances 0.000 description 8
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 7
- ZAMOUSCENKQFHK-UHFFFAOYSA-N Chlorine atom Chemical compound [Cl] ZAMOUSCENKQFHK-UHFFFAOYSA-N 0.000 description 7
- 229910052801 chlorine Inorganic materials 0.000 description 7
- TWNQGVIAIRXVLR-UHFFFAOYSA-N oxo(oxoalumanyloxy)alumane Chemical compound O=[Al]O[Al]=O TWNQGVIAIRXVLR-UHFFFAOYSA-N 0.000 description 7
- -1 1-Methoxy2-Methyl2-propoxy Chemical group 0.000 description 6
- 238000002425 crystallisation Methods 0.000 description 5
- 230000008025 crystallization Effects 0.000 description 5
- 229910044991 metal oxide Inorganic materials 0.000 description 5
- 150000004706 metal oxides Chemical class 0.000 description 5
- 241000989913 Gunnera petaloidea Species 0.000 description 4
- 230000003247 decreasing effect Effects 0.000 description 4
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- LXEXBJXDGVGRAR-UHFFFAOYSA-N trichloro(trichlorosilyl)silane Chemical compound Cl[Si](Cl)(Cl)[Si](Cl)(Cl)Cl LXEXBJXDGVGRAR-UHFFFAOYSA-N 0.000 description 4
- 229910004298 SiO 2 Inorganic materials 0.000 description 3
- 238000002955 isolation Methods 0.000 description 3
- 239000000203 mixture Substances 0.000 description 3
- 239000010409 thin film Substances 0.000 description 3
- 229910018072 Al 2 O 3 Inorganic materials 0.000 description 2
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 description 2
- JUJWROOIHBZHMG-UHFFFAOYSA-N Pyridine Chemical compound C1=CC=NC=C1 JUJWROOIHBZHMG-UHFFFAOYSA-N 0.000 description 2
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 2
- 230000007423 decrease Effects 0.000 description 2
- MROCJMGDEKINLD-UHFFFAOYSA-N dichlorosilane Chemical compound Cl[SiH2]Cl MROCJMGDEKINLD-UHFFFAOYSA-N 0.000 description 2
- 238000005468 ion implantation Methods 0.000 description 2
- 238000003475 lamination Methods 0.000 description 2
- 229910052914 metal silicate Inorganic materials 0.000 description 2
- BPUBBGLMJRNUCC-UHFFFAOYSA-N oxygen(2-);tantalum(5+) Chemical compound [O-2].[O-2].[O-2].[O-2].[O-2].[Ta+5].[Ta+5] BPUBBGLMJRNUCC-UHFFFAOYSA-N 0.000 description 2
- 229910021420 polycrystalline silicon Inorganic materials 0.000 description 2
- 229920005591 polysilicon Polymers 0.000 description 2
- 238000010926 purge Methods 0.000 description 2
- 238000001004 secondary ion mass spectrometry Methods 0.000 description 2
- ZDHXKXAHOVTTAH-UHFFFAOYSA-N trichlorosilane Chemical compound Cl[SiH](Cl)Cl ZDHXKXAHOVTTAH-UHFFFAOYSA-N 0.000 description 2
- 239000005052 trichlorosilane Substances 0.000 description 2
- JLTRXTDYQLMHGR-UHFFFAOYSA-N trimethylaluminium Chemical compound C[Al](C)C JLTRXTDYQLMHGR-UHFFFAOYSA-N 0.000 description 2
- BLRPTPMANUNPDV-UHFFFAOYSA-N Silane Chemical compound [SiH4] BLRPTPMANUNPDV-UHFFFAOYSA-N 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 229910021529 ammonia Inorganic materials 0.000 description 1
- 239000006227 byproduct Substances 0.000 description 1
- 239000003054 catalyst Substances 0.000 description 1
- 238000005229 chemical vapour deposition Methods 0.000 description 1
- 238000000151 deposition Methods 0.000 description 1
- 230000008021 deposition Effects 0.000 description 1
- 238000003795 desorption Methods 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- 230000002542 deteriorative effect Effects 0.000 description 1
- 239000003989 dielectric material Substances 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 230000005684 electric field Effects 0.000 description 1
- 238000005530 etching Methods 0.000 description 1
- 230000005669 field effect Effects 0.000 description 1
- CJNBYAVZURUTKZ-UHFFFAOYSA-N hafnium(iv) oxide Chemical compound O=[Hf]=O CJNBYAVZURUTKZ-UHFFFAOYSA-N 0.000 description 1
- 238000011065 in-situ storage Methods 0.000 description 1
- 230000010354 integration Effects 0.000 description 1
- 206010025482 malaise Diseases 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 125000000962 organic group Chemical group 0.000 description 1
- 238000000206 photolithography Methods 0.000 description 1
- 238000005086 pumping Methods 0.000 description 1
- UMJSCPRVCHMLSP-UHFFFAOYSA-N pyridine Natural products COC1=CC=CN=C1 UMJSCPRVCHMLSP-UHFFFAOYSA-N 0.000 description 1
- 239000000376 reactant Substances 0.000 description 1
- 230000009257 reactivity Effects 0.000 description 1
- 229910000077 silane Inorganic materials 0.000 description 1
- 238000001179 sorption measurement Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000006557 surface reaction Methods 0.000 description 1
- 229910001936 tantalum oxide Inorganic materials 0.000 description 1
- 230000008646 thermal stress Effects 0.000 description 1
- OGIDPMRJRNCKJF-UHFFFAOYSA-N titanium oxide Inorganic materials [Ti]=O OGIDPMRJRNCKJF-UHFFFAOYSA-N 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 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
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- H01L21/02109—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
- H01L21/022—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 the layer being a laminate, i.e. composed of sublayers, e.g. stacks of alternating high-k metal oxides
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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
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Abstract
Description
샘플 | 유전막 | 후 처 리 |
제1 샘플(10) | ALD SiO2 | × |
제2 샘플(11) | 450℃, O3 분위기에서 열처리 | |
제3 샘플(12) | 700℃, N2 분위기에서 열처리 | |
제4 샘플(13) | 750℃, O2 분위기에서 열처리 | |
제5 샘플(14) | 750℃, NH3 분위기에서 열처리 | |
제6 샘플(15) | 750℃, NH3 분위기에서 열처리 + O2 분위기에서 열처리 | |
제7 샘플(20) | 700℃, N2 분위기에서 열처리 | |
제8 샘플(21) | 500℃, O2 분위기에서 열처리 | |
제9 샘플(22) | 600℃, O2 분위기에서 열처리 | |
제10샐픔(23) | O2 플라즈마 처리 | |
제11샘플(24) | thermal SiO2 | × |
Claims (29)
- 반도체기판 상에 원자층 증착법을 사용하여 제1 유전막 및 제2 유전막으로 이루어진 적층 유전막을 형성하되, 상기 제1 유전막은 금속 유전막으로 형성되고, 상기 제2 유전막은 실리콘 산화막 또는 실리콘 산질화막으로 형성되고,상기 적층 유전막에 대하여 후처리를 수행하고,상기 적층 유전막을 형성하는 것과 상기 적층 유전막에 대한 후처리를 적어도 1회 반복하는 것을 포함하는 고유전막의 제조방법.
- 제 1 항에 있어서,상기 금속 유전막은 하프늄 산화막, 하프늄 산질화막, 지르코늄 산화막 또는 지르코늄 산질화막인 것을 특징으로 하는 고유전막의 제조방법.
- 제 2 항에 있어서,상기 금속 유전막은 하프늄 산화막인 것을 특징으로 하는 고유전막의 제조방법.
- 제 1 항에 있어서,상기 금속 유전막은 30Å이하의 두께를 갖도록 형성되는 것을 특징으로 하는 고유전막의 제조방법.
- 제 1 항에 있어서,상기 실리콘 산화막 또는 실리콘 산질화막은 30Å이하의 두께를 갖도록 형성되는 것을 특징으로 하는 고유전막의 제조방법.
- 제 1 항에 있어서,상기 적층유전막에 대한 후처리는 산화처리, 질화처리, 불활성 기체분위기에서의 열처리, 진공 분위기에서의 열처리, 수소 분위기에서의 열처리, 수소 분위기에서의 플라즈마처리 또는 이들의 조합을 통하여 수행되는 것을 특징으로 하는 고유전막의 제조방법.
- 제 6 항에 있어서,상기 산화처리는 NO, NO2 또는 O2 분위기에서의 건식산화처리, O2를 포함하는 분위기에서의 플라즈마처리, O3 분위기에서의 열처리 또는 습식 산화처리를 통하여 수행되는 것을 특징으로 하는 고유전막의 제조방법.
- 제 6 항에 있어서,상기 질화처리는 질소 플라즈마처리 또는 질소분위기에서 열처리를 통하여 수행되는 것을 특징으로 하는 고유전막의 제조방법.
- 제 1 항에 있어서,상기 적층 유전막을 형성하는 것은상기 반도체기판 상에 상기 금속 유전막을 형성하고,상기 금속 유전막 상에 상기 실리콘 산화막 또는 실리콘 산질화막을 형성하는 것을 포함하는 것을 특징으로 하는 고유전막의 제조방법.
- 제 9 항에 있어서,상기 실리콘 산화막 또는 실리콘 산질화막을 형성하기 전에 상기 금속 유전막에 대하여 후처리를 수행하는 것을 더 포함하는 고유전막의 제조방법.
- 제 10 항에 있어서,상기 금속 유전막에 대한 후처리는 산화처리, 질화처리, 불활성 기체분위기에서의 열처리, 진공 분위기에서의 열처리, 수소 분위기에서의 열처리, 수소 분위기에서의 플라즈마처리 또는 이들의 조합을 통하여 수행되는 것을 특징으로 하는 고유전막의 제조방법.
- 제 1 항에 있어서,상기 적층 유전막을 형성하는 것은상기 반도체기판 상에 상기 실리콘 산화막 또는 실리콘 산질화막으로 형성하고,상기 실리콘 산화막 또는 상기 실리콘 산질화막 상에 상기 금속 유전막을 형성하는 것을 포함하는 것을 특징으로 하는 고유전막의 제조방법.
- 제 12 항에 있어서,상기 금속 유전막을 형성하기 전에 상기 실리콘 산화막 또는 실리콘 산질화막에 대하여 후처리를 수행하는 것을 더 포함하는 고유전막의 제조방법.
- 제 13 항에 있어서,상기 실리콘 산화막 또는 실리콘 산질화막에 대한 후처리는 산화처리, 질화처리, 불활성 기체분위기에서의 열처리, 진공 분위기에서의 열처리, 수소 분위기에서의 열처리, 수소 분위기에서의 플라즈마처리 또는 이들의 조합을 통하여 수행되는 것을 특징으로 하는 고유전막의 제조방법.
- 삭제
- 삭제
- 삭제
- 반도체기판 상에 원자층 증착법을 사용하여 제1 유전막 및 제2 유전막으로 이루어진 적층 유전막을 형성하되, 상기 제1 유전막은 금속 유전막으로 형성되고, 상기 제2 유전막은 실리콘 산화막 또는 실리콘 산질화막으로 형성되고,상기 적층 유전막에 대하여 후처리를 수행하고,상기 적층 유전막을 형성하는 것과 상기 적층 유전막에 대한 후처리를 적어도 1회 반복하는 것을 포함하는 게이트 유전막의 제조방법.
- 제 18 항에 있어서,상기 금속 유전막은 하프늄 산화막인 것을 특징으로 하는 게이트 유전막의 제조방법.
- 제 18 항에 있어서,상기 금속 유전막은 30Å이하의 두께를 갖도록 형성되는 것을 특징으로 하는 게이트 유전막의 제조방법.
- 제 18 항에 있어서,상기 실리콘 산화막 또는 실리콘 산질화막은 30Å이하의 두께를 갖도록 형성되는 것을 특징으로 하는 게이트 유전막의 제조방법.
- 제 18 항에 있어서,상기 적층 유전막에 대한 후처리는 산화처리, 질화처리, 불활성 기체분위기에서의 열처리, 진공 분위기에서의 열처리, 수소 분위기에서의 열처리, 수소 분위기에서의 플라즈마처리 또는 이들의 조합을 통하여 수행되는 것을 특징으로 하는 게이트 유전막의 제조방법.
- 제 18 항에 있어서,상기 적층 유전막을 형성하는 것은상기 반도체기판 상에 상기 금속 유전막을 형성하고,상기 금속 유전막 상에 상기 실리콘 산화막 또는 실리콘 산질화막을 형성하는 것을 포함하는 것을 특징으로 하는 게이트 유전막의 제조방법.
- 제 23 항에 있어서,상기 실리콘 산화막 또는 실리콘 질화막을 형성하기 전에 상기 금속 유전막에 대하여 후처리를 수행하는 것을 더 포함하는 게이트 유전막의 제조방법.
- 제 24 항에 있어서,상기 금속 유전막에 대한 후처리는 산화처리, 질화처리, 불활성 기체분위기에서의 열처리, 진공 분위기에서의 열처리, 수소 분위기에서의 열처리, 수소 분위기에서의 플라즈마처리 또는 이들의 조합을 통하여 수행되는 것을 특징으로 하는 게이트 유전막의 제조방법.
- 제 18 항에 있어서,상기 적층 유전막을 형성하는 것은상기 반도체기판 상에 상기 실리콘 산화막 또는 실리콘 산질화막을 형성하고,상기 실리콘 산화막 또는 실리콘 산질화막 상에 상기 금속 유전막을 형성하는 것을 포함하는 것을 특징으로 하는 게이트 유전막의 제조방법.
- 삭제
- 제 26 항에 있어서,상기 금속 유전막을 형성하기 전에 상기 실리콘 산화막 또는 실리콘 산질화막에 대하여 후처리를 수행하는 것을 더 포함하는 게이트 유전막의 제조방법.
- 제 28 항에 있어서,상기 실리콘 산화막 또는 실리콘 산질화막에 대한 후처리는 산화처리, 질화처리, 불활성 기체분위기에서의 열처리, 진공 분위기에서의 열처리, 수소 분위기에서의 열처리, 수소 분위기에서의 플라즈마처리 또는 이들의 조합을 통하여 수행되는 것을 특징으로 하는 게이트 유전막의 제조방법.
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