JP6896754B2 - 物理的気相堆積プロセスにおけるイオン分画を制御するための方法および装置 - Google Patents
物理的気相堆積プロセスにおけるイオン分画を制御するための方法および装置 Download PDFInfo
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- JP6896754B2 JP6896754B2 JP2018546698A JP2018546698A JP6896754B2 JP 6896754 B2 JP6896754 B2 JP 6896754B2 JP 2018546698 A JP2018546698 A JP 2018546698A JP 2018546698 A JP2018546698 A JP 2018546698A JP 6896754 B2 JP6896754 B2 JP 6896754B2
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- 238000000034 method Methods 0.000 title claims description 115
- 230000008569 process Effects 0.000 title claims description 93
- 238000005240 physical vapour deposition Methods 0.000 title description 13
- 238000005194 fractionation Methods 0.000 title description 6
- 239000000758 substrate Substances 0.000 claims description 178
- 239000000463 material Substances 0.000 claims description 47
- 150000002500 ions Chemical class 0.000 claims description 41
- 230000002093 peripheral effect Effects 0.000 claims description 31
- 238000000151 deposition Methods 0.000 claims description 19
- 238000004544 sputter deposition Methods 0.000 claims description 10
- 230000001939 inductive effect Effects 0.000 claims description 3
- 230000008021 deposition Effects 0.000 description 16
- 239000007789 gas Substances 0.000 description 15
- 239000002826 coolant Substances 0.000 description 12
- 230000007935 neutral effect Effects 0.000 description 9
- 239000010949 copper Substances 0.000 description 6
- 229910021645 metal ion Inorganic materials 0.000 description 6
- 239000002245 particle Substances 0.000 description 6
- 229910052782 aluminium Inorganic materials 0.000 description 5
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 5
- 230000004907 flux Effects 0.000 description 5
- 239000012212 insulator Substances 0.000 description 5
- 229910052715 tantalum Inorganic materials 0.000 description 5
- 239000010936 titanium Substances 0.000 description 5
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 4
- 229910052802 copper Inorganic materials 0.000 description 4
- GUVRBAGPIYLISA-UHFFFAOYSA-N tantalum atom Chemical compound [Ta] GUVRBAGPIYLISA-UHFFFAOYSA-N 0.000 description 4
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 3
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 description 3
- -1 aluminum oxygen nitride Chemical class 0.000 description 3
- 229910052751 metal Inorganic materials 0.000 description 3
- 239000002184 metal Substances 0.000 description 3
- 239000007769 metal material Substances 0.000 description 3
- 239000013077 target material Substances 0.000 description 3
- 229910052719 titanium Inorganic materials 0.000 description 3
- XKRFYHLGVUSROY-UHFFFAOYSA-N Argon Chemical compound [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 description 2
- 238000005137 deposition process Methods 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 1
- 208000000659 Autoimmune lymphoproliferative syndrome Diseases 0.000 description 1
- JPVYNHNXODAKFH-UHFFFAOYSA-N Cu2+ Chemical compound [Cu+2] JPVYNHNXODAKFH-UHFFFAOYSA-N 0.000 description 1
- MYMOFIZGZYHOMD-UHFFFAOYSA-N Dioxygen Chemical compound O=O MYMOFIZGZYHOMD-UHFFFAOYSA-N 0.000 description 1
- 230000002411 adverse Effects 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- 229910045601 alloy Inorganic materials 0.000 description 1
- 229910052786 argon Inorganic materials 0.000 description 1
- 230000006399 behavior Effects 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 239000010941 cobalt Substances 0.000 description 1
- 229910017052 cobalt Inorganic materials 0.000 description 1
- GUTLYIVDDKVIGB-UHFFFAOYSA-N cobalt atom Chemical compound [Co] GUTLYIVDDKVIGB-UHFFFAOYSA-N 0.000 description 1
- 239000004020 conductor Substances 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 229910001431 copper ion Inorganic materials 0.000 description 1
- 239000003989 dielectric material Substances 0.000 description 1
- 229910001873 dinitrogen Inorganic materials 0.000 description 1
- 229910001882 dioxygen Inorganic materials 0.000 description 1
- 238000010494 dissociation reaction Methods 0.000 description 1
- 230000005593 dissociations Effects 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 230000009977 dual effect Effects 0.000 description 1
- 230000005684 electric field Effects 0.000 description 1
- 229940082150 encore Drugs 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 239000001307 helium Substances 0.000 description 1
- 229910052734 helium Inorganic materials 0.000 description 1
- SWQJXJOGLNCZEY-UHFFFAOYSA-N helium atom Chemical compound [He] SWQJXJOGLNCZEY-UHFFFAOYSA-N 0.000 description 1
- 239000011261 inert gas Substances 0.000 description 1
- 230000005596 ionic collisions Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 229910052754 neon Inorganic materials 0.000 description 1
- GKAOGPIIYCISHV-UHFFFAOYSA-N neon atom Chemical compound [Ne] GKAOGPIIYCISHV-UHFFFAOYSA-N 0.000 description 1
- 229910052759 nickel Inorganic materials 0.000 description 1
- 150000004767 nitrides Chemical class 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- TWNQGVIAIRXVLR-UHFFFAOYSA-N oxo(oxoalumanyloxy)alumane Chemical compound O=[Al]O[Al]=O TWNQGVIAIRXVLR-UHFFFAOYSA-N 0.000 description 1
- 238000005086 pumping Methods 0.000 description 1
- 239000004065 semiconductor Substances 0.000 description 1
- 238000001228 spectrum Methods 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- MZLGASXMSKOWSE-UHFFFAOYSA-N tantalum nitride Chemical compound [Ta]#N MZLGASXMSKOWSE-UHFFFAOYSA-N 0.000 description 1
- OGIDPMRJRNCKJF-UHFFFAOYSA-N titanium(II) oxide Chemical compound [Ti]=O OGIDPMRJRNCKJF-UHFFFAOYSA-N 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
- WFKWXMTUELFFGS-UHFFFAOYSA-N tungsten Chemical compound [W] WFKWXMTUELFFGS-UHFFFAOYSA-N 0.000 description 1
- 229910052721 tungsten Inorganic materials 0.000 description 1
- 239000010937 tungsten Substances 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
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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
- C23C14/00—Coating by vacuum evaporation, by sputtering or by ion implantation of the coating forming material
- C23C14/22—Coating by vacuum evaporation, by sputtering or by ion implantation of the coating forming material characterised by the process of coating
- C23C14/34—Sputtering
- C23C14/35—Sputtering by application of a magnetic field, e.g. magnetron sputtering
- C23C14/351—Sputtering by application of a magnetic field, e.g. magnetron sputtering using a magnetic field in close vicinity to the substrate
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- C23C14/00—Coating by vacuum evaporation, by sputtering or by ion implantation of the coating forming material
- C23C14/22—Coating by vacuum evaporation, by sputtering or by ion implantation of the coating forming material characterised by the process of coating
- C23C14/34—Sputtering
- C23C14/3435—Applying energy to the substrate during sputtering
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- C23C14/00—Coating by vacuum evaporation, by sputtering or by ion implantation of the coating forming material
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- H01J37/32—Gas-filled discharge tubes
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- H01L21/02266—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 physical ablation of a target, e.g. sputtering, reactive sputtering, physical vapour deposition or pulsed laser deposition
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- 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
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- 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
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Description
したがって、本発明者らは、物理的気相堆積プロセスにおけるイオン分画を制御するための方法および装置の改善された実施形態を提供した。
前述の事項は、本開示の実施形態を対象としているが、本開示の他のおよびさらなる実施形態が本開示の基本的な範囲から逸脱せずに考案されてもよい。
Claims (15)
- 所与の直径を有する基板を処理するためのプロセスチャンバであって、
内部容積、およびスパッタされるターゲットを含むリッドアセンブリを有する本体であって、前記内部容積は、前記所与の直径を有する中央部分および前記中央部分を取り囲む周辺部分を含む、本体と、
前記ターゲット上方に配置されたマグネトロンであって、前記プロセスチャンバの中心軸の周りで複数の磁石を回転させて前記内部容積の前記周辺部分に環状プラズマを形成するように構成され、前記複数の磁石の回転半径が前記所与の直径と等しいかまたはそれよりも大きい、マグネトロンと、
前記内部容積の中に前記ターゲットに対向して配置され、前記所与の直径を有する基板を支持するように構成された支持面を有する基板支持体と、
前記周辺部分において実質的に垂直の磁力線を有する磁場を形成するために、前記本体の周りにおよび前記ターゲットに近接して配置された第1の組の磁石と、
前記支持面の中心に向けられた磁力線を有する磁場を形成するために、前記本体の周りにおよび前記基板支持体の支持面上方に配置された第2の組の磁石と、
前記ターゲットを電気的にバイアスするために、前記ターゲットに結合された第1の電源と、
前記基板支持体を電気的にバイアスするために、前記基板支持体に結合された第2の電源と、
を備えるプロセスチャンバ。 - 前記ターゲットと前記基板支持体との間に配置されたコリメータ
をさらに備える、請求項1に記載のプロセスチャンバ。 - 前記コリメータが、前記所与の直径と等しいかまたはそれよりも大きい直径を有する中央領域、および前記中央領域を取り囲む周辺領域を含む、請求項2に記載のプロセスチャンバ。
- 前記コリメータの基板対向面と同一であるかまたはその面より下の高さで前記本体の周りに配置された第3の組の磁石であって、前記中央部分に向かってならびに前記支持面の前記中心に向かって内向きにおよび下方に向けられた磁力線を有する磁場を生成するように構成されている、第3の組の磁石
をさらに備える、請求項2に記載のプロセスチャンバ。 - 前記コリメータがバイアスされている、請求項2に記載のプロセスチャンバ。
- 前記コリメータが400mm〜600mmの第1の高さだけ前記基板支持体の前記支持面から離間されている、請求項2に記載のプロセスチャンバ。
- 前記コリメータが25mm〜75mmの第2の高さだけ前記ターゲットから離間されている、請求項2に記載のプロセスチャンバ。
- 前記マグネトロンが前記所与の直径と前記内部容積の内径との間の回転半径を有する、請求項1から7までのいずれか1項に記載のプロセスチャンバ。
- 前記回転半径が5.5インチ〜7インチの間で調整可能である、請求項1から7までのいずれか1項に記載のプロセスチャンバ。
- 前記第2の電源が、スパッタされた材料を前記基板支持体の中心に向かって引き寄せるように構成されている、請求項1から7までのいずれか1項に記載のプロセスチャンバ。
- ターゲットからの材料をスパッタするために、基板上方のプロセスチャンバの環状領域内部に、および前記ターゲットに近接してプラズマを形成するステップであって、前記環状領域の内径は、前記プラズマの主要部分が前記基板の上方でありかつ半径方向外側の位置に配置されるように、前記基板の直径と等しいかまたはそれよりも大きい、ステップと、
前記ターゲットからスパッタされた材料を前記基板に向かって誘導するステップと、
前記ターゲットからスパッタされた材料を前記基板上に堆積させるステップと、
を含む、基板を処理する方法。 - 前記ターゲットからスパッタされた材料を誘導するステップが、
前記環状領域の下に、および前記ターゲットと前記基板との間に配置されたコリメータによって材料を誘導するステップ、
前記環状領域内に実質的に垂直の磁力線を有する磁場を形成するために、第1の組の磁石を使用して第1の磁場を生成するステップ、
前記基板の中心に向けられた磁力線を有する磁場を形成するために、第2の組の磁石を使用して第2の磁場を生成するステップ、
または
前記基板の前記中心に向かって内向きにおよび下方に向けられた磁力線を有する磁場を生成するために、第3の組の磁石を使用して第3の磁場を生成するステップ、
のうちの少なくとも1つをさらに含む、請求項11に記載の方法。 - 前記基板に向かってイオンを引きつけるために、前記基板を支持する基板支持体を電気的にバイアスするステップ、
をさらに含む、請求項11または12に記載の方法。 - 前記ターゲットからスパッタされた材料を誘導するステップが、
前記環状領域の下に、および前記ターゲットと前記基板との間に配置されたコリメータによって材料を誘導するステップと、
前記プラズマ中に形成されたイオンの極性と同一の極性を有する電圧によって前記コリメータをバイアスするステップ、または
前記環状領域における、および前記コリメータを通る実質的に垂直の磁力線を有する磁場を形成するために、第1の組の磁石を使用して第1の磁場を生成するステップ
のうちの少なくとも1つのステップと、
をさらに含む、請求項11に記載の方法。 - 前記環状領域の下に、および前記ターゲットと前記基板との間に配置されたコリメータによって材料を誘導するステップと、
前記プラズマ中に形成されたイオンの極性と同一の極性を有する電圧によって前記コリメータをバイアスするステップと、
前記環状領域における、および前記コリメータを通る実質的に垂直の磁力線を有する磁場を形成するために、第1の組の磁石を使用して第1の磁場を生成するステップと、
前記基板の中心に向けられた磁力線を有する磁場を形成するために、第2の組の磁石を使用して第2の磁場を生成するステップと、
前記基板の前記中心に向かって内向きにおよび下方に向けられた磁力線を有する磁場を生成するために、第3の組の磁石を使用して第3の磁場を生成するステップと、
前記基板に向かってイオンを引きつけるために、前記基板を支持する基板支持体を電気的にバイアスするステップと、
をさらに含む、請求項11に記載の方法。
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