JP5913079B2 - 成膜方法 - Google Patents
成膜方法 Download PDFInfo
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- JP5913079B2 JP5913079B2 JP2012279920A JP2012279920A JP5913079B2 JP 5913079 B2 JP5913079 B2 JP 5913079B2 JP 2012279920 A JP2012279920 A JP 2012279920A JP 2012279920 A JP2012279920 A JP 2012279920A JP 5913079 B2 JP5913079 B2 JP 5913079B2
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- Prior art keywords
- gas
- supplied
- turntable
- film forming
- separation
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- 238000000151 deposition Methods 0.000 title claims description 5
- 239000007789 gas Substances 0.000 claims description 334
- 238000000034 method Methods 0.000 claims description 183
- 239000012495 reaction gas Substances 0.000 claims description 113
- 238000000926 separation method Methods 0.000 claims description 82
- 230000001590 oxidative effect Effects 0.000 claims description 60
- 238000012545 processing Methods 0.000 claims description 51
- 239000004065 semiconductor Substances 0.000 claims description 13
- 229910052751 metal Inorganic materials 0.000 claims description 8
- 239000002184 metal Substances 0.000 claims description 8
- 239000000758 substrate Substances 0.000 claims description 8
- 239000011261 inert gas Substances 0.000 claims description 6
- 229910052710 silicon Inorganic materials 0.000 claims description 6
- 239000010703 silicon Substances 0.000 claims description 6
- 229910052712 strontium Inorganic materials 0.000 claims description 6
- CIOAGBVUUVVLOB-UHFFFAOYSA-N strontium atom Chemical compound [Sr] CIOAGBVUUVVLOB-UHFFFAOYSA-N 0.000 claims description 6
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 claims description 5
- 239000010936 titanium Substances 0.000 claims description 5
- 229910052735 hafnium Inorganic materials 0.000 claims description 4
- VBJZVLUMGGDVMO-UHFFFAOYSA-N hafnium atom Chemical compound [Hf] VBJZVLUMGGDVMO-UHFFFAOYSA-N 0.000 claims description 4
- 229910052719 titanium Inorganic materials 0.000 claims description 4
- CBENFWSGALASAD-UHFFFAOYSA-N Ozone Chemical compound [O-][O+]=O CBENFWSGALASAD-UHFFFAOYSA-N 0.000 claims description 3
- QCWXUUIWCKQGHC-UHFFFAOYSA-N Zirconium Chemical compound [Zr] QCWXUUIWCKQGHC-UHFFFAOYSA-N 0.000 claims description 3
- 229910052782 aluminium Inorganic materials 0.000 claims description 3
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 3
- 229910052726 zirconium Inorganic materials 0.000 claims description 3
- 239000010408 film Substances 0.000 description 201
- 230000008569 process Effects 0.000 description 118
- 235000012431 wafers Nutrition 0.000 description 112
- 230000015572 biosynthetic process Effects 0.000 description 34
- 238000005121 nitriding Methods 0.000 description 30
- 150000004767 nitrides Chemical class 0.000 description 18
- ATJFFYVFTNAWJD-UHFFFAOYSA-N Tin Chemical compound [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 description 15
- ZYLGGWPMIDHSEZ-UHFFFAOYSA-N dimethylazanide;hafnium(4+) Chemical compound [Hf+4].C[N-]C.C[N-]C.C[N-]C.C[N-]C ZYLGGWPMIDHSEZ-UHFFFAOYSA-N 0.000 description 14
- 230000002093 peripheral effect Effects 0.000 description 13
- 238000010586 diagram Methods 0.000 description 12
- 238000010926 purge Methods 0.000 description 11
- 238000012546 transfer Methods 0.000 description 9
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N silicon dioxide Inorganic materials O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 7
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 5
- 238000000231 atomic layer deposition Methods 0.000 description 5
- 238000006243 chemical reaction Methods 0.000 description 5
- 229910052814 silicon oxide Inorganic materials 0.000 description 5
- 239000002052 molecular layer Substances 0.000 description 4
- 230000003647 oxidation Effects 0.000 description 4
- 238000007254 oxidation reaction Methods 0.000 description 4
- 229910052760 oxygen Inorganic materials 0.000 description 4
- JLTRXTDYQLMHGR-UHFFFAOYSA-N trimethylaluminium Chemical compound C[Al](C)C JLTRXTDYQLMHGR-UHFFFAOYSA-N 0.000 description 4
- CGRVKSPUKAFTBN-UHFFFAOYSA-N N-silylbutan-1-amine Chemical compound CCCCN[SiH3] CGRVKSPUKAFTBN-UHFFFAOYSA-N 0.000 description 3
- 229910052581 Si3N4 Inorganic materials 0.000 description 3
- 239000012298 atmosphere Substances 0.000 description 3
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 3
- 125000002524 organometallic group Chemical group 0.000 description 3
- 239000001301 oxygen Substances 0.000 description 3
- HQVNEWCFYHHQES-UHFFFAOYSA-N silicon nitride Chemical compound N12[Si]34N5[Si]62N3[Si]51N64 HQVNEWCFYHHQES-UHFFFAOYSA-N 0.000 description 3
- 238000001179 sorption measurement Methods 0.000 description 3
- QNOPNNUZTOFGJQ-UHFFFAOYSA-N CC[Zr](C)(N)(CC)(CC)CC Chemical compound CC[Zr](C)(N)(CC)(CC)CC QNOPNNUZTOFGJQ-UHFFFAOYSA-N 0.000 description 2
- 230000008901 benefit Effects 0.000 description 2
- 230000000052 comparative effect Effects 0.000 description 2
- 230000008021 deposition Effects 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 239000010453 quartz Substances 0.000 description 2
- FZHAPNGMFPVSLP-UHFFFAOYSA-N silanamine Chemical compound [SiH3]N FZHAPNGMFPVSLP-UHFFFAOYSA-N 0.000 description 2
- 239000010409 thin film Substances 0.000 description 2
- OGIDPMRJRNCKJF-UHFFFAOYSA-N titanium oxide Inorganic materials [Ti]=O OGIDPMRJRNCKJF-UHFFFAOYSA-N 0.000 description 2
- 229910018072 Al 2 O 3 Inorganic materials 0.000 description 1
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 description 1
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 1
- OLWWRZUEOYLASA-UHFFFAOYSA-N C(CCC)[SiH2]NCCCC Chemical compound C(CCC)[SiH2]NCCCC OLWWRZUEOYLASA-UHFFFAOYSA-N 0.000 description 1
- 229910004298 SiO 2 Inorganic materials 0.000 description 1
- 229910010413 TiO 2 Inorganic materials 0.000 description 1
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 description 1
- 238000013459 approach Methods 0.000 description 1
- 230000004888 barrier function Effects 0.000 description 1
- 239000007795 chemical reaction product Substances 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- PMHQVHHXPFUNSP-UHFFFAOYSA-M copper(1+);methylsulfanylmethane;bromide Chemical compound Br[Cu].CSC PMHQVHHXPFUNSP-UHFFFAOYSA-M 0.000 description 1
- BUMGIEFFCMBQDG-UHFFFAOYSA-N dichlorosilicon Chemical compound Cl[Si]Cl BUMGIEFFCMBQDG-UHFFFAOYSA-N 0.000 description 1
- 229910000449 hafnium oxide Inorganic materials 0.000 description 1
- WIHZLLGSGQNAGK-UHFFFAOYSA-N hafnium(4+);oxygen(2-) Chemical compound [O-2].[O-2].[Hf+4] WIHZLLGSGQNAGK-UHFFFAOYSA-N 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 229910010272 inorganic material Inorganic materials 0.000 description 1
- 239000011147 inorganic material Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 239000012528 membrane Substances 0.000 description 1
- 229910044991 metal oxide Inorganic materials 0.000 description 1
- 150000004706 metal oxides Chemical class 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
- TWNQGVIAIRXVLR-UHFFFAOYSA-N oxo(oxoalumanyloxy)alumane Chemical compound O=[Al]O[Al]=O TWNQGVIAIRXVLR-UHFFFAOYSA-N 0.000 description 1
- UFQXGXDIJMBKTC-UHFFFAOYSA-N oxostrontium Chemical compound [Sr]=O UFQXGXDIJMBKTC-UHFFFAOYSA-N 0.000 description 1
- RVTZCBVAJQQJTK-UHFFFAOYSA-N oxygen(2-);zirconium(4+) Chemical compound [O-2].[O-2].[Zr+4] RVTZCBVAJQQJTK-UHFFFAOYSA-N 0.000 description 1
- LIVNPJMFVYWSIS-UHFFFAOYSA-N silicon monoxide Chemical compound [Si-]#[O+] LIVNPJMFVYWSIS-UHFFFAOYSA-N 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
- ZVWKZXLXHLZXLS-UHFFFAOYSA-N zirconium nitride Chemical compound [Zr]#N ZVWKZXLXHLZXLS-UHFFFAOYSA-N 0.000 description 1
- 229910001928 zirconium oxide Inorganic materials 0.000 description 1
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- H01L21/02—Manufacture or treatment of semiconductor devices or of parts thereof
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- H01L21/02164—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 being a silicon oxide, e.g. SiO2
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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
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- C—CHEMISTRY; METALLURGY
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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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- 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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- H01L21/02107—Forming insulating materials on a substrate
- H01L21/02225—Forming insulating materials on a substrate characterised by the process for the formation of the insulating layer
- H01L21/0226—Forming insulating materials on a substrate characterised by the process for the formation of the insulating layer formation by a deposition process
- 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
- H01L21/0228—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 deposition by cyclic CVD, e.g. ALD, ALE, pulsed CVD
-
- H—ELECTRICITY
- 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
- H01L21/02299—Forming insulating materials on a substrate characterised by the treatment performed before or after the formation of the layer pre-treatment
- H01L21/02312—Forming insulating materials on a substrate characterised by the treatment performed before or after the formation of the layer pre-treatment treatment by exposure to a gas or vapour
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- H—ELECTRICITY
- 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
- H01L21/02337—Forming insulating materials on a substrate characterised by the treatment performed before or after the formation of the layer post-treatment treatment by exposure to a gas or vapour
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Description
前記回転テーブルの前記上面の上方において区画され、前記回転テーブルの前記上面に向けてガスを供給する第1のガス供給部を有する第1の処理領域と、
前記回転テーブルの周方向に沿って前記第1の処理領域から離間して配置され、前記回転テーブルの前記上面に対してガスを供給する第2のガス供給部を有する第2の処理領域と、
前記第1の処理領域と前記第2の処理領域との間に設けられ、前記回転テーブルの前記上面に対して分離ガスを供給する分離ガス供給部と、該分離ガス供給部からの前記分離ガスを前記第1の処理領域と前記第2の処理領域へ導く狭い空間を前記回転テーブルの前記上面に対して形成する天井面とを有する分離領域と、を備える成膜装置を用いて、前記複数の基板上に所定の元素を含む酸化膜を成膜する成膜方法であって、
前記第1のガス供給部及び前記分離ガス供給部から前記分離ガスを供給し、前記第2のガス供給部から酸化ガスを供給した状態で前記回転テーブルを少なくとも1回回転させる第1の工程と、
前記第1のガス供給部から前記所定の元素を含む反応ガスを供給し、前記第2のガス供給部から前記酸化ガスを供給し、前記分離ガス供給部から前記分離ガスを供給した状態で前記回転テーブルを所定回数回転させ、前記基板上に前記所定の元素を含む酸化膜を成膜する第2の工程と、
前記第1のガス供給部及び前記分離ガス供給部から前記分離ガスを供給し、前記第2のガス供給部から前記酸化ガスを供給した状態で前記回転テーブルを少なくとも1回回転させる第3の工程と、を含む。
(成膜装置)
まず、図1乃至図3を用いて、本発明の実施形態1に係る成膜方法を実施するのに好適な成膜装置について説明する。
次に、図1乃至図5において説明した成膜装置を用いた本発明の実施形態1に係る成膜方法について説明する。
図8は、本発明の実施形態2に係る成膜方法の一例を示したシーケンス図である。図8(A)は、実施形態2に係る成膜方法の一例のシーケンスを、回転テーブル2を用いて示した図であり、図8(B)は、実施形態2に係る成膜方法の一例を、タイミングチャートを用いて示した図である。なお、図8(A)において、反応ガスノズル31、32から供給されるガスが図6(A)と異なっているが、その他の構成要素は図6(A)と同様であるので、同様の構成要素に同一の参照符号を付してその説明を省略する。
2 回転テーブル
4 凸状部
11 天板
12 容器本体
15 搬送口
24 凹部(ウエハ載置部)
31、32 反応ガスノズル
41、42 分離ガスノズル
D 分離領域
P1 第1の処理領域
P2 第2の処理領域
H 分離空間
W ウエハ
Claims (8)
- チャンバ内に回転可能に収容され、複数の基板を上面に載置可能な載置部を有する回転テーブルと、
前記回転テーブルの前記上面の上方において区画され、前記回転テーブルの前記上面に向けてガスを供給する第1のガス供給部を有する第1の処理領域と、
前記回転テーブルの周方向に沿って前記第1の処理領域から離間して配置され、前記回転テーブルの前記上面に対してガスを供給する第2のガス供給部を有する第2の処理領域と、
前記第1の処理領域と前記第2の処理領域との間に設けられ、前記回転テーブルの前記上面に対して分離ガスを供給する分離ガス供給部と、該分離ガス供給部からの前記分離ガスを前記第1の処理領域と前記第2の処理領域へ導く狭い空間を前記回転テーブルの前記上面に対して形成する天井面とを有する分離領域と、を備える成膜装置を用いて、前記複数の基板上に所定の元素を含む酸化膜を成膜する成膜方法であって、
前記第1のガス供給部及び前記分離ガス供給部から前記分離ガスを供給し、前記第2のガス供給部から酸化ガスを供給した状態で前記回転テーブルを少なくとも1回回転させる第1の工程と、
前記第1のガス供給部から前記所定の元素を含む反応ガスを供給し、前記第2のガス供給部から前記酸化ガスを供給し、前記分離ガス供給部から前記分離ガスを供給した状態で前記回転テーブルを所定回数回転させ、前記基板上に前記所定の元素を含む酸化膜を成膜する第2の工程と、
前記第1のガス供給部及び前記分離ガス供給部から前記分離ガスを供給し、前記第2のガス供給部から前記酸化ガスを供給した状態で前記回転テーブルを少なくとも1回回転させる第3の工程と、を含み、
前記第3の工程は、前記第1の工程よりも長時間行う成膜方法。 - 前記所定回数は、所望の膜厚の前記所定の元素を含む酸化膜を成膜するのに必要な回転数である請求項1に記載の成膜方法。
- 前記酸化ガスは、オゾンガスである請求項1又は2に記載の成膜方法。
- 前記所定の元素は、金属元素又は半導体元素である請求項1乃至3のいずれか一項に記載の成膜方法。
- 前記金属元素は、ハフニウム、ジルコニウム、アルミニウム、チタン、ストロンチウムのいずれか1つであり、
前記半導体元素は、シリコンである請求項4に記載の成膜方法。 - 前記分離ガスは、不活性ガスである請求項1乃至5のいずれか一項に記載の成膜方法。
- 前記第1の工程の前及び前記第3の工程の後に、前記第1のガス供給部から不活性ガスを供給するとともに、前記第2のガス供給部及び前記分離ガス供給部から前記分離ガスを供給した状態で前記回転テーブルを回転させる工程を更に有する請求項1乃至6のいずれか一項に記載の成膜方法。
- 前記不活性ガスは、前記分離ガスと同じガスである請求項7に記載の成膜方法。
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