JP5701214B2 - 強化された銅のイオン化を伴うpvd銅シードオーバーハング再スパッタ - Google Patents
強化された銅のイオン化を伴うpvd銅シードオーバーハング再スパッタ Download PDFInfo
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- JP5701214B2 JP5701214B2 JP2011533256A JP2011533256A JP5701214B2 JP 5701214 B2 JP5701214 B2 JP 5701214B2 JP 2011533256 A JP2011533256 A JP 2011533256A JP 2011533256 A JP2011533256 A JP 2011533256A JP 5701214 B2 JP5701214 B2 JP 5701214B2
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- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 title description 6
- 229910052802 copper Inorganic materials 0.000 title description 6
- 239000010949 copper Substances 0.000 title description 6
- 239000000758 substrate Substances 0.000 claims description 200
- 229910052751 metal Inorganic materials 0.000 claims description 154
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- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 6
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 6
- KDLHZDBZIXYQEI-UHFFFAOYSA-N Palladium Chemical compound [Pd] KDLHZDBZIXYQEI-UHFFFAOYSA-N 0.000 description 6
- BASFCYQUMIYNBI-UHFFFAOYSA-N platinum Chemical compound [Pt] BASFCYQUMIYNBI-UHFFFAOYSA-N 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
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 4
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- 239000010703 silicon Substances 0.000 description 4
- JBRZTFJDHDCESZ-UHFFFAOYSA-N AsGa Chemical compound [As]#[Ga] JBRZTFJDHDCESZ-UHFFFAOYSA-N 0.000 description 3
- ZOKXTWBITQBERF-UHFFFAOYSA-N Molybdenum Chemical compound [Mo] ZOKXTWBITQBERF-UHFFFAOYSA-N 0.000 description 3
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- 238000013459 approach Methods 0.000 description 3
- 229910017052 cobalt Inorganic materials 0.000 description 3
- 239000010941 cobalt Substances 0.000 description 3
- GUTLYIVDDKVIGB-UHFFFAOYSA-N cobalt atom Chemical compound [Co] GUTLYIVDDKVIGB-UHFFFAOYSA-N 0.000 description 3
- 238000001816 cooling Methods 0.000 description 3
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- 229910052742 iron Inorganic materials 0.000 description 3
- 230000033001 locomotion Effects 0.000 description 3
- 229910052750 molybdenum Inorganic materials 0.000 description 3
- 239000011733 molybdenum Substances 0.000 description 3
- 229910052759 nickel Inorganic materials 0.000 description 3
- 229910052758 niobium Inorganic materials 0.000 description 3
- 239000010955 niobium Substances 0.000 description 3
- GUCVJGMIXFAOAE-UHFFFAOYSA-N niobium atom Chemical compound [Nb] GUCVJGMIXFAOAE-UHFFFAOYSA-N 0.000 description 3
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- GUVRBAGPIYLISA-UHFFFAOYSA-N tantalum atom Chemical compound [Ta] GUVRBAGPIYLISA-UHFFFAOYSA-N 0.000 description 3
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- WFKWXMTUELFFGS-UHFFFAOYSA-N tungsten Chemical compound [W] WFKWXMTUELFFGS-UHFFFAOYSA-N 0.000 description 3
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- 229910001218 Gallium arsenide Inorganic materials 0.000 description 2
- JMASRVWKEDWRBT-UHFFFAOYSA-N Gallium nitride Chemical compound [Ga]#N JMASRVWKEDWRBT-UHFFFAOYSA-N 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
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- PZNSFCLAULLKQX-UHFFFAOYSA-N Boron nitride Chemical compound N#B PZNSFCLAULLKQX-UHFFFAOYSA-N 0.000 description 1
- UAEPNZWRGJTJPN-UHFFFAOYSA-N CC1CCCCC1 Chemical compound CC1CCCCC1 UAEPNZWRGJTJPN-UHFFFAOYSA-N 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 238000009825 accumulation Methods 0.000 description 1
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- HZXMRANICFIONG-UHFFFAOYSA-N gallium phosphide Chemical compound [Ga]#P HZXMRANICFIONG-UHFFFAOYSA-N 0.000 description 1
- 229910052732 germanium Inorganic materials 0.000 description 1
- GNPVGFCGXDBREM-UHFFFAOYSA-N germanium atom Chemical compound [Ge] GNPVGFCGXDBREM-UHFFFAOYSA-N 0.000 description 1
- 238000001534 heteroepitaxy Methods 0.000 description 1
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- 210000003734 kidney Anatomy 0.000 description 1
- WABPQHHGFIMREM-UHFFFAOYSA-N lead(0) Chemical compound [Pb] WABPQHHGFIMREM-UHFFFAOYSA-N 0.000 description 1
- 230000000670 limiting effect Effects 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 239000011159 matrix material Substances 0.000 description 1
- 238000001465 metallisation Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- NJPPVKZQTLUDBO-UHFFFAOYSA-N novaluron Chemical compound C1=C(Cl)C(OC(F)(F)C(OC(F)(F)F)F)=CC=C1NC(=O)NC(=O)C1=C(F)C=CC=C1F NJPPVKZQTLUDBO-UHFFFAOYSA-N 0.000 description 1
- 230000006911 nucleation Effects 0.000 description 1
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- 238000000926 separation method Methods 0.000 description 1
- 229910021332 silicide Inorganic materials 0.000 description 1
- FVBUAEGBCNSCDD-UHFFFAOYSA-N silicide(4-) Chemical compound [Si-4] FVBUAEGBCNSCDD-UHFFFAOYSA-N 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 238000004381 surface treatment Methods 0.000 description 1
- 239000010409 thin film Substances 0.000 description 1
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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
- 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
- C23C14/06—Coating by vacuum evaporation, by sputtering or by ion implantation of the coating forming material characterised by the coating material
- C23C14/14—Metallic material, boron or silicon
- C23C14/18—Metallic material, boron or silicon on other inorganic substrates
- C23C14/185—Metallic material, boron or silicon on other inorganic substrates by cathodic sputtering
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- C23C14/00—Coating by vacuum evaporation, by sputtering or by ion implantation of the coating forming material
- C23C14/04—Coating on selected surface areas, e.g. using masks
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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
- C23C14/58—After-treatment
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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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- H01L21/02365—Forming inorganic semiconducting materials on a substrate
- H01L21/02612—Formation types
- H01L21/02617—Deposition types
- H01L21/02631—Physical deposition at reduced pressure, e.g. MBE, sputtering, evaporation
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- 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
- H01L21/2855—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 physical means, e.g. sputtering, evaporation
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- H01L21/71—Manufacture of specific parts of devices defined in group H01L21/70
- H01L21/768—Applying interconnections to be used for carrying current between separate components within a device comprising conductors and dielectrics
- H01L21/76838—Applying interconnections to be used for carrying current between separate components within a device comprising conductors and dielectrics characterised by the formation and the after-treatment of the conductors
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- H01L21/768—Applying interconnections to be used for carrying current between separate components within a device comprising conductors and dielectrics
- H01L21/76838—Applying interconnections to be used for carrying current between separate components within a device comprising conductors and dielectrics characterised by the formation and the after-treatment of the conductors
- H01L21/76841—Barrier, adhesion or liner layers
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- H01L21/71—Manufacture of specific parts of devices defined in group H01L21/70
- H01L21/768—Applying interconnections to be used for carrying current between separate components within a device comprising conductors and dielectrics
- H01L21/76838—Applying interconnections to be used for carrying current between separate components within a device comprising conductors and dielectrics characterised by the formation and the after-treatment of the conductors
- H01L21/76841—Barrier, adhesion or liner layers
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- H01L21/71—Manufacture of specific parts of devices defined in group H01L21/70
- H01L21/768—Applying interconnections to be used for carrying current between separate components within a device comprising conductors and dielectrics
- H01L21/76838—Applying interconnections to be used for carrying current between separate components within a device comprising conductors and dielectrics characterised by the formation and the after-treatment of the conductors
- H01L21/76877—Filling of holes, grooves or trenches, e.g. vias, with conductive material
- H01L21/76883—Post-treatment or after-treatment of the conductive material
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Description
その他の実施形態では、基板は、第1金属層の堆積期間に第1のエネルギーレベルの電気バイアスを受け、第2金属層の堆積期間に第2のエネルギーレベルの電気バイアスを受け、そして、第2のエネルギーレベルは第1のエネルギーレベルよりも少なくとも3倍高い。
その他の実施形態では、第1金属層の肉厚領域から肉薄領域に金属を押すステップが、第1金属層の表面エネルギーを少なくとも約50%減少させ、第1金属層にせん断力を適用するステップを含む。
その他の実施形態では、第2金属層を基板上に堆積させるステップが、第1金属層の表面エネルギーを少なくとも約50%低下させることを含む。
Claims (15)
- 上表面領域に開口部を有する基板の処理方法であって、
前記開口部の底面部および側壁部を覆う金属層を前記基板上に堆積すること、
前記金属層に脆性表面修正処理を施すこと、
金属層に塑性表面修正処理を施すこと、
を含み、
前記脆性表面修正処理が、
前記金属層に金属イオンを照射して、前記金属層の粒子を前記開口部の底面部から放出すること、
放出された前記粒子を前記側壁部上に再堆積させることを含み、
前記塑性表面修正処理が、
前記金属層にイオンを衝突させて、前記金属層の一部を前記側壁部に沿って押し出すことを含む、方法。 - 前記金属層が前記開口部の幅の半分より小さい曲率半径の曲面を有し、前記金属層が前記開口部の上部に、かつ前記開口部の側壁部に隣接するようにオーバーハング部を形成する、請求項1に記載の方法。
- 前記金属層が前記基板の前記上表面領域を覆う前記金属層のキャッピング部の下部に1つ以上の角型部を有する、請求項1に記載の方法。
- 基板の上表面領域に形成された開口部内にコンフォーマル金属層を堆積させる方法であって、
前記基板を処理チャンバ内の基板支持体上に配置すること、
物理蒸着工程によって基板上に第1領域、前記第1領域より薄い第2領域および下部を有する第1金属層を堆積させること、
物理蒸着工程によって前記第1金属層上に第2金属層を堆積させること、前記第1金属層に金属イオンを照射して前記第1金属層の下部から材料を放出させ、前記放出された材料を第2金属層上に再堆積すること、および、前記第1金属層にイオンを衝突させて、前記第1金属層の第1領域から前記第1金属層の第2領域に金属を押し出すことを同時に行うことを含む、方法。 - 前記基板は、前記第1金属層の堆積期間に第1のエネルギーレベルの電気バイアスを受け、前記第2金属層の堆積期間に第2のエネルギーレベルの電気バイアスを受け、そして、第2のエネルギーレベルは第1のエネルギーレベルよりも少なくとも3倍高い、請求項4に記載の方法。
- 前記基板は、前記第1金属層の堆積期間に50ワットから150ワットの間の第1のエネルギーレベルの電気バイアスを受け、前記第2金属層の堆積期間に800ワットから1200ワットの間の第2のエネルギーレベルの電気バイアスを受ける、請求項4に記載の方法。
- 前記第1金属層を堆積すること、および前記第2金属層を堆積することの各々において、前記基板の上表面領域に対して少なくとも60°の入射角で基板に向かって荷電粒子を誘導するコリメータを使用することを含む、請求項4に記載の方法。
- 前記第1金属層にイオンを衝突させて前記第1金属層の第1領域から第2領域に金属を押し出すことが、前記第1金属層の表面エネルギーを少なくとも50%減少させ、前記第1金属層にせん断力を適用することを含む、請求項7に記載の方法。
- 前記基板は、前記第1金属層の堆積期間に第1のエネルギーレベルの電気バイアスを受け、前記第2金属層の堆積期間に第2のエネルギーレベルの電気バイアスを受け、第2のエネルギーレベルは第1のエネルギーレベルよりも少なくとも3倍高い、請求項8に記載の方法。
- 前記第1金属層を堆積すること、および前記第2金属層を堆積することの各々において、前記基板の上表面領域に対して少なくとも60°の入射角で荷電粒子を基板に誘導することを含む、請求項9に記載の方法。
- 上表面領域と、前記上表面領域に側壁部と底面部を有する開口部を有する基板上にコンフォーマル金属層を堆積させる方法であって、
前記基板を処理チャンバ内の基板支持体上に配置すること、
100V未満の第1の電気バイアスを用いて、前記基板の表面に対して金属イオンを誘導することを含む第1の物理蒸着工程を前記基板に施すことによって、前記基板上に、前記開口部の側壁部の上部にある第1領域と前記開口部の側壁部上および底面部上にあり前記第1領域より薄い第2領域を有する第1金属層を堆積すること、
少なくとも250Vの第2の電気バイアスを用いて、前記基板の表面に向けて金属イオンを誘導することを含む第2の物理蒸着工程を前記基板に施すことを含み、
前記第2の物理蒸着工程が、
前記基板上に第2金属層を堆積させること、
前記第1金属層に金属イオンで照射して、前記開口部の底面部の第1金属層から材料を放出させ、前記放出された材料を前記側壁部に再配置すること、
前記第1金属層にイオンを衝突させて、前記側壁部の上部の第1領域から前記側壁部の第2領域へ前記材料を押し出すこと、を含む方法。 - 前記第2金属層を前記基板上に堆積させることが、前記第1金属層の表面エネルギーを少なくとも50%低下させることを含む、請求項4または11に記載の方法。
- 前記第1金属層の表面エネルギーを少なくとも50%低下させることをさらに含み、前記第1の電気バイアスは150ワット以下の電力を印加し、前記第2の電気バイアスは600ワット以上の電力を印加する、請求項11に記載の方法。
- 前記第2物理蒸着工程の間、基板温度が200℃未満に制御される、請求項13に記載の方法。
- 前記第2金属層の堆積終了前に前記材料の放出が始まり、前記材料の放出が終わる前に前記第1金属層の衝突が始まる、請求項11に記載の方法。
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PCT/US2009/061184 WO2010048094A2 (en) | 2008-10-22 | 2009-10-19 | Pvd cu seed overhang re-sputtering with enhanced cu ionization |
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CN102290370A (zh) * | 2010-06-21 | 2011-12-21 | 无锡华润上华半导体有限公司 | 导电插塞的制作方法 |
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US9076823B2 (en) | 2013-09-11 | 2015-07-07 | Taiwan Semiconductor Manufacturing Company, Ltd. | Bi-layer metal deposition in silicide formation |
US9831074B2 (en) | 2013-10-24 | 2017-11-28 | Applied Materials, Inc. | Bipolar collimator utilized in a physical vapor deposition chamber |
US9528185B2 (en) | 2014-08-22 | 2016-12-27 | Applied Materials, Inc. | Plasma uniformity control by arrays of unit cell plasmas |
CN110073463B (zh) * | 2016-11-18 | 2022-05-24 | 应用材料公司 | 用于在物理气相沉积腔室中的准直器 |
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