JP6906439B2 - 成膜方法 - Google Patents
成膜方法 Download PDFInfo
- Publication number
- JP6906439B2 JP6906439B2 JP2017245236A JP2017245236A JP6906439B2 JP 6906439 B2 JP6906439 B2 JP 6906439B2 JP 2017245236 A JP2017245236 A JP 2017245236A JP 2017245236 A JP2017245236 A JP 2017245236A JP 6906439 B2 JP6906439 B2 JP 6906439B2
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- Prior art keywords
- gas
- film forming
- rotary table
- reaction gas
- annealing step
- Prior art date
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- 238000000034 method Methods 0.000 title claims description 127
- 230000015572 biosynthetic process Effects 0.000 title claims description 22
- 239000007789 gas Substances 0.000 claims description 291
- 239000012495 reaction gas Substances 0.000 claims description 194
- 238000000926 separation method Methods 0.000 claims description 99
- 238000000137 annealing Methods 0.000 claims description 97
- 238000012545 processing Methods 0.000 claims description 28
- 230000001590 oxidative effect Effects 0.000 claims description 26
- 150000004767 nitrides Chemical class 0.000 claims description 19
- 239000000758 substrate Substances 0.000 claims description 16
- 229910052751 metal Inorganic materials 0.000 claims description 11
- 239000002184 metal Substances 0.000 claims description 11
- 239000004065 semiconductor Substances 0.000 claims description 11
- 229910052710 silicon Inorganic materials 0.000 claims description 10
- 239000010703 silicon Substances 0.000 claims description 10
- 239000010936 titanium Substances 0.000 claims description 8
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 claims description 7
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 claims description 7
- 229910052735 hafnium Inorganic materials 0.000 claims description 7
- VBJZVLUMGGDVMO-UHFFFAOYSA-N hafnium atom Chemical compound [Hf] VBJZVLUMGGDVMO-UHFFFAOYSA-N 0.000 claims description 7
- 229910052719 titanium Inorganic materials 0.000 claims description 7
- 239000011261 inert gas Substances 0.000 claims description 6
- CBENFWSGALASAD-UHFFFAOYSA-N Ozone Chemical compound [O-][O+]=O CBENFWSGALASAD-UHFFFAOYSA-N 0.000 claims description 5
- QCWXUUIWCKQGHC-UHFFFAOYSA-N Zirconium Chemical compound [Zr] QCWXUUIWCKQGHC-UHFFFAOYSA-N 0.000 claims description 5
- 229910052782 aluminium Inorganic materials 0.000 claims description 5
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 5
- 229910052712 strontium Inorganic materials 0.000 claims description 5
- CIOAGBVUUVVLOB-UHFFFAOYSA-N strontium atom Chemical compound [Sr] CIOAGBVUUVVLOB-UHFFFAOYSA-N 0.000 claims description 5
- 229910052726 zirconium Inorganic materials 0.000 claims description 5
- 239000010408 film Substances 0.000 description 218
- 235000012431 wafers Nutrition 0.000 description 155
- 230000008569 process Effects 0.000 description 63
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 30
- 229910052814 silicon oxide Inorganic materials 0.000 description 28
- 238000007254 oxidation reaction Methods 0.000 description 19
- 230000003647 oxidation Effects 0.000 description 17
- 230000003028 elevating effect Effects 0.000 description 16
- 230000002093 peripheral effect Effects 0.000 description 15
- 230000007246 mechanism Effects 0.000 description 13
- 101000735417 Homo sapiens Protein PAPPAS Proteins 0.000 description 12
- 102100034919 Protein PAPPAS Human genes 0.000 description 12
- 238000010926 purge Methods 0.000 description 11
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 9
- 238000006243 chemical reaction Methods 0.000 description 8
- 238000005121 nitriding Methods 0.000 description 8
- 238000012546 transfer Methods 0.000 description 8
- 238000000231 atomic layer deposition Methods 0.000 description 6
- 238000011065 in-situ storage Methods 0.000 description 5
- 239000002052 molecular layer Substances 0.000 description 5
- 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 4
- 230000008859 change Effects 0.000 description 4
- 238000005137 deposition process Methods 0.000 description 4
- 239000012298 atmosphere Substances 0.000 description 3
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 3
- 238000000151 deposition Methods 0.000 description 3
- 239000001301 oxygen Substances 0.000 description 3
- 229910052760 oxygen Inorganic materials 0.000 description 3
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 2
- 229910052581 Si3N4 Inorganic materials 0.000 description 2
- ATJFFYVFTNAWJD-UHFFFAOYSA-N Tin Chemical compound [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 description 2
- 230000008901 benefit Effects 0.000 description 2
- 230000008021 deposition Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 230000001965 increasing effect Effects 0.000 description 2
- 229910044991 metal oxide Inorganic materials 0.000 description 2
- 150000004706 metal oxides Chemical class 0.000 description 2
- 239000010453 quartz Substances 0.000 description 2
- HQVNEWCFYHHQES-UHFFFAOYSA-N silicon nitride Chemical compound N12[Si]34N5[Si]62N3[Si]51N64 HQVNEWCFYHHQES-UHFFFAOYSA-N 0.000 description 2
- 239000010409 thin film Substances 0.000 description 2
- MYMOFIZGZYHOMD-UHFFFAOYSA-N Dioxygen Chemical compound O=O MYMOFIZGZYHOMD-UHFFFAOYSA-N 0.000 description 1
- CGRVKSPUKAFTBN-UHFFFAOYSA-N N-silylbutan-1-amine Chemical compound CCCCN[SiH3] CGRVKSPUKAFTBN-UHFFFAOYSA-N 0.000 description 1
- 229910004298 SiO 2 Inorganic materials 0.000 description 1
- 230000000274 adsorptive effect Effects 0.000 description 1
- 229910021529 ammonia Inorganic materials 0.000 description 1
- 238000013459 approach Methods 0.000 description 1
- 230000001174 ascending effect Effects 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
- 229910001882 dioxygen Inorganic materials 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- -1 for example Substances 0.000 description 1
- 230000006870 function Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000004519 manufacturing process Methods 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
- 230000000149 penetrating effect Effects 0.000 description 1
- 230000004044 response Effects 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- FZHAPNGMFPVSLP-UHFFFAOYSA-N silanamine Chemical compound [SiH3]N FZHAPNGMFPVSLP-UHFFFAOYSA-N 0.000 description 1
- 238000001179 sorption measurement Methods 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
- 239000000126 substance Substances 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
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- H01L21/67—Apparatus specially adapted for handling semiconductor or electric solid state devices during manufacture or treatment thereof; Apparatus specially adapted for handling wafers during manufacture or treatment of semiconductor or electric solid state devices or components ; Apparatus not specifically provided for elsewhere
- H01L21/683—Apparatus specially adapted for handling semiconductor or electric solid state devices during manufacture or treatment thereof; Apparatus specially adapted for handling wafers during manufacture or treatment of semiconductor or electric solid state devices or components ; Apparatus not specifically provided for elsewhere for supporting or gripping
- H01L21/687—Apparatus specially adapted for handling semiconductor or electric solid state devices during manufacture or treatment thereof; Apparatus specially adapted for handling wafers during manufacture or treatment of semiconductor or electric solid state devices or components ; Apparatus not specifically provided for elsewhere for supporting or gripping using mechanical means, e.g. chucks, clamps or pinches
- H01L21/68714—Apparatus specially adapted for handling semiconductor or electric solid state devices during manufacture or treatment thereof; Apparatus specially adapted for handling wafers during manufacture or treatment of semiconductor or electric solid state devices or components ; Apparatus not specifically provided for elsewhere for supporting or gripping using mechanical means, e.g. chucks, clamps or pinches the wafers being placed on a susceptor, stage or support
- H01L21/68764—Apparatus specially adapted for handling semiconductor or electric solid state devices during manufacture or treatment thereof; Apparatus specially adapted for handling wafers during manufacture or treatment of semiconductor or electric solid state devices or components ; Apparatus not specifically provided for elsewhere for supporting or gripping using mechanical means, e.g. chucks, clamps or pinches the wafers being placed on a susceptor, stage or support characterised by a movable susceptor, stage or support, others than those only rotating on their own vertical axis, e.g. susceptors on a rotating caroussel
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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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- H—ELECTRICITY
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- 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
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- H01L21/02219—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 characterised by the precursor material for deposition the precursor containing a compound comprising Si the compound comprising silicon and nitrogen
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- H01L21/02107—Forming insulating materials on a substrate
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Description
前記回転テーブルの下方に設けられたヒータユニットと、
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膜を成膜する成膜方法であって、
前記回転テーブルが上昇した状態で、前記第1のガス供給部から前記所定の元素を含む第1の反応ガスを供給し、前記第2のガス供給部から第2の反応ガスを供給し、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膜を成膜する成膜工程と、
前記成膜工程の少なくとも前又は後において、前記回転テーブルが下降した状態で、前記第1のガス供給部から前記分離ガス又は前記第2の反応ガスを供給し、前記第2のガス供給部から前記分離ガス又は前記第2の反応ガスを供給し、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少なくとも1回回転させるアニール工程と、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6において説明した成膜装置を用いた本発明の実施形態に係る成膜方法について説明する。
次に、参考形態に係る成膜方法について説明する。図8(A)〜(E)は参考形態に係る成膜方法の一例のシーケンスを、成膜装置の断面図を用いて示した図である。図7(A)〜(E)と同様に、容器本体12と天板11を有するチャンバ1の内部に回転テーブル2とヒータユニット7が設けられた成膜装置が簡略的に示されている。上記の実施形態に係る成膜方法と同様に、シリコン酸化膜の成膜を行う酸化膜形成プロセスについて説明する。
図9は、本実施例に係る成膜方法において回転テーブル2を上昇した状態(UP)から下降した状態(DP)に移動したときのウエハ温度の変化を示した図である。回転テーブル2が上昇した状態でウエハWの温度が約760℃となっているときに、回転テーブル2を下降させると、ウエハWの温度を約17℃高めることができた。昇降機構17によって回転テーブル2を昇降させることで、ヒータユニット7の設定温度を変更することなく、ウエハWの温度を変更可能である。プリアニール工程とポストアニール工程を行う際に、成膜工程と同じ成膜装置を用いて(in−situで)、ウエハ(基板)の温度が目標の温度に到達する時間を短縮して、生産性を高めることができる。
2 回転テーブル
4 凸状部
7 ヒータユニット
11 天板
12 容器本体
15 搬送口
17 昇降機構
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 (17)
- 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し、昇降可能な回転テーブルと、
前記回転テーブルの下方に設けられたヒータユニットと、
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膜を成膜する成膜方法であって、
前記回転テーブルが上昇した状態で、前記第1のガス供給部から前記所定の元素を含む第1の反応ガスを供給し、前記第2のガス供給部から第2の反応ガスを供給し、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膜を成膜する成膜工程と、
前記成膜工程の少なくとも前又は後において、前記回転テーブルが下降した状態で、前記第1のガス供給部から前記分離ガス又は前記第2の反応ガスを供給し、前記第2のガス供給部から前記分離ガス又は前記第2の反応ガスを供給し、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少なくとも1回回転させるアニール工程と、を含む成膜方法。 - 前記アニール工程として、前記成膜工程の前に行うプリアニール工程を有する請求項1に記載の成膜方法。
- 前記プリアニール工程において、前記第1のガス供給部から前記分離ガス又は前記第2の反応ガスを供給し、前記第2のガス供給部から前記第2の反応ガスを供給する請求項2に記載の成膜方法。
- 前記アニール工程として、前記成膜工程の後に行うポストアニール工程を有する請求項1に記載の成膜方法。
- 前記ポストアニール工程において、前記第1のガス供給部から前記分離ガス又は前記第2の反応ガスを供給し、前記第2のガス供給部から前記第2の反応ガスを供給する請求項4に記載の成膜方法。
- 前記アニール工程として、前記成膜工程の前に行うプリアニール工程と、前記成膜工程の後に行うポストアニール工程とを有する請求項1に記載の成膜方法。
- 前記プリアニール工程において、前記第1のガス供給部から前記分離ガス又は前記第2の反応ガスを供給し、前記第2のガス供給部から前記第2の反応ガスを供給し、
前記ポストアニール工程において、前記第1のガス供給部から前記分離ガス又は前記第2の反応ガスを供給し、前記第2のガス供給部から前記第2の反応ガスを供給する請求項6に記載の成膜方法。 - 前記ポストアニール工程は、前記プリアニール工程よりも長時間行う請求項6又は7に記載の成膜方法。
- 前記第2の反応ガスが窒化ガスである請求項1〜8のいずれか1項に記載の成膜方法。
- 前記窒化ガスがアンモニアガスである請求項9に記載の成膜方法。
- 前記第2の反応ガスが酸化ガスである請求項1〜8のいずれか1項に記載の成膜方法。
- 前記酸化ガスがオゾンガスである請求項11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1〜12のいずれか1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13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1〜14のいずれか1項に記載の成膜方法。
- 前記アニール工程として前記成膜工程の前に行うプリアニール工程を有する時に、前記プリアニール工程の前に、前記チャンバ内における前記回転テーブル上に前記基板を搬入する工程をさらに有する請求項1〜15のいずれか1項に記載の成膜方法。
- 前記アニール工程として前記成膜工程の後に行うポストアニール工程を有する時に、前記ポストアニール工程の後に、前記チャンバ内における前記回転テーブル上から前記基板を搬出する工程をさらに有する請求項1〜16のいずれか1項に記載の成膜方法。
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