JP7296790B2 - 成膜方法及び基板処理システム - Google Patents
成膜方法及び基板処理システム Download PDFInfo
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- 238000012545 processing Methods 0.000 title claims description 216
- 238000000034 method Methods 0.000 title claims description 47
- 239000000758 substrate Substances 0.000 title claims description 30
- 239000007789 gas Substances 0.000 claims description 640
- WFKWXMTUELFFGS-UHFFFAOYSA-N tungsten Chemical compound [W] WFKWXMTUELFFGS-UHFFFAOYSA-N 0.000 claims description 147
- 239000010937 tungsten Substances 0.000 claims description 145
- 229910052721 tungsten Inorganic materials 0.000 claims description 145
- 238000010926 purge Methods 0.000 claims description 66
- 238000012546 transfer Methods 0.000 claims description 42
- 230000007246 mechanism Effects 0.000 claims description 37
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims description 6
- 238000000151 deposition Methods 0.000 claims description 6
- QJGQUHMNIGDVPM-UHFFFAOYSA-N nitrogen group Chemical group [N] QJGQUHMNIGDVPM-UHFFFAOYSA-N 0.000 claims description 6
- 229910052757 nitrogen Inorganic materials 0.000 claims description 3
- 238000003860 storage Methods 0.000 description 127
- 235000012431 wafers Nutrition 0.000 description 62
- 239000012159 carrier gas Substances 0.000 description 27
- NXHILIPIEUBEPD-UHFFFAOYSA-H tungsten hexafluoride Chemical compound F[W](F)(F)(F)(F)F NXHILIPIEUBEPD-UHFFFAOYSA-H 0.000 description 23
- 239000010936 titanium Substances 0.000 description 21
- 238000010586 diagram Methods 0.000 description 20
- 238000011144 upstream manufacturing Methods 0.000 description 19
- ATJFFYVFTNAWJD-UHFFFAOYSA-N Tin Chemical compound [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 description 18
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 description 17
- 238000011156 evaluation Methods 0.000 description 17
- 239000012495 reaction gas Substances 0.000 description 17
- 230000001965 increasing effect Effects 0.000 description 12
- 230000008569 process Effects 0.000 description 11
- 229910000069 nitrogen hydride Inorganic materials 0.000 description 8
- 230000007723 transport mechanism Effects 0.000 description 8
- 230000015572 biosynthetic process Effects 0.000 description 6
- 230000003746 surface roughness Effects 0.000 description 6
- 238000000231 atomic layer deposition Methods 0.000 description 5
- 230000008021 deposition Effects 0.000 description 5
- 230000003028 elevating effect Effects 0.000 description 5
- 230000006870 function Effects 0.000 description 5
- 239000004065 semiconductor Substances 0.000 description 5
- 238000004833 X-ray photoelectron spectroscopy Methods 0.000 description 4
- 238000005229 chemical vapour deposition Methods 0.000 description 4
- 230000032258 transport Effects 0.000 description 4
- 239000000969 carrier Substances 0.000 description 3
- 239000013078 crystal Substances 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- XKRFYHLGVUSROY-UHFFFAOYSA-N Argon Chemical compound [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 description 2
- BLRPTPMANUNPDV-UHFFFAOYSA-N Silane Chemical compound [SiH4] BLRPTPMANUNPDV-UHFFFAOYSA-N 0.000 description 2
- 229910052782 aluminium Inorganic materials 0.000 description 2
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 2
- 239000000919 ceramic Substances 0.000 description 2
- 230000032798 delamination Effects 0.000 description 2
- 238000009792 diffusion process Methods 0.000 description 2
- 238000004299 exfoliation Methods 0.000 description 2
- 229910052751 metal Inorganic materials 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 230000002093 peripheral effect Effects 0.000 description 2
- 238000001228 spectrum Methods 0.000 description 2
- 238000010301 surface-oxidation reaction Methods 0.000 description 2
- YOUIDGQAIILFBW-UHFFFAOYSA-J tetrachlorotungsten Chemical compound Cl[W](Cl)(Cl)Cl YOUIDGQAIILFBW-UHFFFAOYSA-J 0.000 description 2
- MNWRORMXBIWXCI-UHFFFAOYSA-N tetrakis(dimethylamido)titanium Chemical compound CN(C)[Ti](N(C)C)(N(C)C)N(C)C MNWRORMXBIWXCI-UHFFFAOYSA-N 0.000 description 2
- JLTRXTDYQLMHGR-UHFFFAOYSA-N trimethylaluminium Chemical compound C[Al](C)C JLTRXTDYQLMHGR-UHFFFAOYSA-N 0.000 description 2
- 229910000838 Al alloy Inorganic materials 0.000 description 1
- 229910001218 Gallium arsenide Inorganic materials 0.000 description 1
- 229910000990 Ni alloy Inorganic materials 0.000 description 1
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 1
- 229910003074 TiCl4 Inorganic materials 0.000 description 1
- NRTOMJZYCJJWKI-UHFFFAOYSA-N Titanium nitride Chemical compound [Ti]#N NRTOMJZYCJJWKI-UHFFFAOYSA-N 0.000 description 1
- 229910003091 WCl6 Inorganic materials 0.000 description 1
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 1
- 229910052786 argon Inorganic materials 0.000 description 1
- 230000004888 barrier function Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 229910010293 ceramic material Inorganic materials 0.000 description 1
- 238000004891 communication Methods 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
- 230000002542 deteriorative effect Effects 0.000 description 1
- 238000005530 etching Methods 0.000 description 1
- LNKYFCABELSPAN-UHFFFAOYSA-N ethyl(methyl)azanide;titanium(4+) Chemical compound [Ti+4].CC[N-]C.CC[N-]C.CC[N-]C.CC[N-]C LNKYFCABELSPAN-UHFFFAOYSA-N 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 239000004973 liquid crystal related substance Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 230000006911 nucleation Effects 0.000 description 1
- 238000010899 nucleation Methods 0.000 description 1
- 230000001590 oxidative effect Effects 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 229910052710 silicon Inorganic materials 0.000 description 1
- 239000010703 silicon Substances 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 229910052719 titanium Inorganic materials 0.000 description 1
- XJDNKRIXUMDJCW-UHFFFAOYSA-J titanium tetrachloride Chemical compound Cl[Ti](Cl)(Cl)Cl XJDNKRIXUMDJCW-UHFFFAOYSA-J 0.000 description 1
- KPGXUAIFQMJJFB-UHFFFAOYSA-H tungsten hexachloride Chemical compound Cl[W](Cl)(Cl)(Cl)(Cl)Cl KPGXUAIFQMJJFB-UHFFFAOYSA-H 0.000 description 1
- WIDQNNDDTXUPAN-UHFFFAOYSA-I tungsten(v) chloride Chemical compound Cl[W](Cl)(Cl)(Cl)Cl WIDQNNDDTXUPAN-UHFFFAOYSA-I 0.000 description 1
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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
- H01L21/04—Manufacture or treatment of semiconductor devices or of parts thereof the devices having potential barriers, e.g. a PN junction, depletion layer or carrier concentration layer
- H01L21/18—Manufacture or treatment of semiconductor devices or of parts thereof the devices having potential barriers, e.g. a PN junction, depletion layer or carrier concentration layer the devices having semiconductor bodies comprising elements of Group IV of the Periodic Table or AIIIBV compounds with or without impurities, e.g. doping materials
- H01L21/28—Manufacture of electrodes on semiconductor bodies using processes or apparatus not provided for in groups H01L21/20 - H01L21/268
- H01L21/283—Deposition of conductive or insulating materials for electrodes conducting electric current
- H01L21/285—Deposition of conductive or insulating materials for electrodes conducting electric current from a gas or vapour, e.g. condensation
- H01L21/28506—Deposition of conductive or insulating materials for electrodes conducting electric current from a gas or vapour, e.g. condensation of conductive layers
- H01L21/28512—Deposition of conductive or insulating materials for electrodes conducting electric current from a gas or vapour, e.g. condensation of conductive layers on semiconductor bodies comprising elements of Group IV of the Periodic Table
- H01L21/28556—Deposition of conductive or insulating materials for electrodes conducting electric current from a gas or vapour, e.g. condensation of conductive layers on semiconductor bodies comprising elements of Group IV of the Periodic Table by chemical means, e.g. CVD, LPCVD, PECVD, laser CVD
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- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
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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
- C23C16/44—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 method of coating
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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
- H01L21/02109—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
- H01L21/02112—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
- H01L21/02172—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 at least one metal element, e.g. metal oxides, metal nitrides, metal oxynitrides or metal carbides
- H01L21/02175—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 at least one metal element, e.g. metal oxides, metal nitrides, metal oxynitrides or metal carbides characterised by the metal
- H01L21/02178—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 at least one metal element, e.g. metal oxides, metal nitrides, metal oxynitrides or metal carbides characterised by the metal the material containing aluminium, e.g. Al2O3
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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
- H01L21/02225—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
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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
- H01L21/67—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
- H01L21/67005—Apparatus not specifically provided for elsewhere
- H01L21/67011—Apparatus for manufacture or treatment
- H01L21/67017—Apparatus for fluid treatment
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- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L2924/00—Indexing scheme for arrangements or methods for connecting or disconnecting semiconductor or solid-state bodies as covered by H01L24/00
- H01L2924/01—Chemical elements
- H01L2924/01013—Aluminum [Al]
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- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L2924/00—Indexing scheme for arrangements or methods for connecting or disconnecting semiconductor or solid-state bodies as covered by H01L24/00
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Description
一実施形態の成膜方法について説明する。図1は、成膜方法の一例を示すフローチャートである。図2は、成膜方法の一例を示す工程断面図である。
上記の成膜方法を実現する基板処理システムについて、Al含有膜を形成する工程S10、初期タングステン膜を形成する工程S20及び主タングステン膜を形成する工程S30を、真空搬送室を介して接続された別の処理容器内で行う場合を例に挙げて説明する。図4は、基板処理システムの構成例を示す概略図である。
次に、基板処理システムの動作の一例について説明する。
最初に、Al含有膜としてAlN膜を形成する場合の一例を説明する。まず、バルブ51e,53e,55e,57eが閉じられた状態で、ゲートバルブ12を開いて搬送機構によりウエハWを処理容器1内に搬送し、搬送位置にある載置台2に載置する。搬送機構を処理容器1内から退避させた後、ゲートバルブ12を閉じる。載置台2のヒータ21によりウエハWを所定の温度(例えば200℃~550℃)に加熱すると共に載置台2を処理位置まで上昇させ、処理空間38を形成する。また、排気機構42の圧力制御バルブにより処理容器1内を所定の圧力(例えば100Pa~1000Pa)に調整する。
まず、バルブ61e~63e,65e~67eが閉じられた状態で、ゲートバルブ12を開いて搬送機構によりウエハWを処理容器1内に搬送し、搬送位置にある載置台2に載置する。搬送機構を処理容器1内から退避させた後、ゲートバルブ12を閉じる。載置台2のヒータ21によりウエハWを所定の温度(例えば150℃~300℃)に加熱すると共に載置台2を処理位置まで上昇させ、処理空間38を形成する。また、排気機構42の圧力制御バルブにより処理容器1内を所定の圧力(例えば100Pa~1000Pa)に調整する。
まず、バルブ61e~64e,66e~68eが閉じられた状態で、ゲートバルブ12を開いて搬送機構によりウエハWを処理容器1内に搬送し、搬送位置にある載置台2に載置する。搬送機構を処理容器1内から退避させた後、ゲートバルブ12を閉じる。載置台2のヒータ21によりウエハWを所定の温度(例えば300℃~600℃)に加熱すると共に載置台2を処理位置まで上昇させ、処理空間38を形成する。また、排気機構42の圧力制御バルブにより処理容器1内を所定の圧力(例えば100Pa~1000Pa)に調整する。
次に、図4から図8を参照して説明した基板処理システムを用いて、一実施形態の成膜方法による効果を確認した実施例1について説明する。
次に、図4から図8を参照して説明した基板処理システムを用いて、一実施形態の成膜方法による効果を確認した実施例2について説明する。
200 真空搬送室
600 全体制御部
W ウエハ
Claims (11)
- 減圧状態で下地の上に窒素を含有するAl含有膜を形成する工程と、
前記Al含有膜を形成する工程の後、前記Al含有膜を大気に曝露することなく、減圧状態でB2H6ガスの供給とWF6ガスの供給とをパージを挟んで交互に繰り返し、前記Al含有膜の上に初期タングステン膜を形成する工程と、
を有する、
成膜方法。 - 前記初期タングステン膜を形成する工程の後、減圧状態でタングステン含有ガスの供給と前記タングステン含有ガスを還元する還元ガスの供給とをパージを挟んで交互に繰り返し、前記初期タングステン膜の上に主タングステン膜を形成する工程を有する、
請求項1に記載の成膜方法。 - 前記Al含有膜を形成する工程は、減圧状態でAl含有ガスの供給と窒素含有ガスの供給とをパージを挟んで交互に繰り返す工程である、
請求項1又は2に記載の成膜方法。 - 前記Al含有ガスは、TMAガスであり、
前記窒素含有ガスは、NH3ガスである、
請求項3に記載の成膜方法。 - 前記Al含有膜を形成する工程と前記初期タングステン膜を形成する工程とは、真空搬送室を介して接続された別の処理容器内で行われる、
請求項1乃至4のいずれか一項に記載の成膜方法。 - 前記Al含有膜を形成する工程と前記初期タングステン膜を形成する工程とは、同一の処理容器内で行われる、
請求項1乃至4のいずれか一項に記載の成膜方法。 - 前記下地は、Ti含有膜である、
請求項1乃至6のいずれか一項に記載の成膜方法。 - 前記Al含有膜は、非晶質のAlN膜である、
請求項1乃至7のいずれか一項に記載の成膜方法。 - 前記下地は、基板であり、
前記Al含有膜は、AlTiN膜である、
請求項1又は2に記載の成膜方法。 - 前記タングステン含有ガスは、WF6ガスであり、
前記還元ガスは、H2ガスである、
請求項2に記載の成膜方法。 - 減圧状態で基板を搬送可能な搬送機構を内部に有する真空搬送室と、
前記真空搬送室に接続された第1の成膜装置と、
前記真空搬送室に接続された第2の成膜装置と、
制御部と、
を備え、
前記制御部は、
前記基板を前記第1の成膜装置に搬送し、前記第1の成膜装置において減圧状態で下地の上に窒素を含有するAl含有膜を形成する工程と、
前記基板を前記第1の成膜装置から前記真空搬送室に搬送する工程と、
前記基板を前記真空搬送室から前記第2の成膜装置に搬送し、前記基板を大気に曝露することなく、減圧状態でB2H6ガスの供給とWF6ガスの供給とをパージを挟んで交互に繰り返し、前記Al含有膜の上に初期タングステン膜を形成する工程と、
をこの順で実行するように、前記真空搬送室、前記第1の成膜装置及び前記第2の成膜装置を制御する、
基板処理システム。
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US16/575,694 US11171004B2 (en) | 2018-09-20 | 2019-09-19 | Film forming method and substrate processing system |
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Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
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KR100557964B1 (ko) | 2004-10-22 | 2006-03-07 | 주식회사 하이닉스반도체 | 반도체 소자의 메탈1콘택 형성방법 |
JP2009024252A (ja) | 2007-05-15 | 2009-02-05 | Applied Materials Inc | タングステン材料の原子層堆積法 |
JP2016186094A (ja) | 2015-03-27 | 2016-10-27 | 東京エレクトロン株式会社 | タングステン膜の成膜方法 |
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