JP2006518927A - 半導体相互接続構造上に金属層を堆積するための方法 - Google Patents
半導体相互接続構造上に金属層を堆積するための方法 Download PDFInfo
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- 229910052751 metal Inorganic materials 0.000 title claims abstract description 70
- 239000002184 metal Substances 0.000 title claims abstract description 70
- 238000000034 method Methods 0.000 title claims abstract description 62
- 238000000151 deposition Methods 0.000 title claims abstract description 42
- 239000004065 semiconductor Substances 0.000 title claims abstract description 24
- 239000010949 copper Substances 0.000 claims abstract description 33
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims abstract description 30
- 229910052802 copper Inorganic materials 0.000 claims abstract description 29
- 239000004020 conductor Substances 0.000 claims abstract description 26
- 238000000992 sputter etching Methods 0.000 claims abstract description 26
- 229910052786 argon Inorganic materials 0.000 claims abstract description 13
- 230000008021 deposition Effects 0.000 claims description 15
- 229910052721 tungsten Inorganic materials 0.000 claims description 14
- 239000003989 dielectric material Substances 0.000 claims description 10
- 229910052757 nitrogen Inorganic materials 0.000 claims description 8
- 229910052782 aluminium Inorganic materials 0.000 claims description 7
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 claims description 6
- 229910052710 silicon Inorganic materials 0.000 claims description 6
- 239000010703 silicon Substances 0.000 claims description 6
- 239000000203 mixture Substances 0.000 claims description 5
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 4
- 238000000059 patterning Methods 0.000 claims description 4
- HBMJWWWQQXIZIP-UHFFFAOYSA-N silicon carbide Chemical compound [Si+]#[C-] HBMJWWWQQXIZIP-UHFFFAOYSA-N 0.000 claims description 4
- WFKWXMTUELFFGS-UHFFFAOYSA-N tungsten Chemical compound [W] WFKWXMTUELFFGS-UHFFFAOYSA-N 0.000 claims description 4
- 239000010937 tungsten Substances 0.000 claims description 4
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 3
- 229910052581 Si3N4 Inorganic materials 0.000 claims description 2
- 239000005368 silicate glass Substances 0.000 claims description 2
- 229910010271 silicon carbide Inorganic materials 0.000 claims description 2
- 235000012239 silicon dioxide Nutrition 0.000 claims description 2
- 239000000377 silicon dioxide Substances 0.000 claims description 2
- HQVNEWCFYHHQES-UHFFFAOYSA-N silicon nitride Chemical group N12[Si]34N5[Si]62N3[Si]51N64 HQVNEWCFYHHQES-UHFFFAOYSA-N 0.000 claims description 2
- XKRFYHLGVUSROY-UHFFFAOYSA-N Argon Chemical compound [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 abstract description 20
- 238000012546 transfer Methods 0.000 abstract description 3
- 238000004519 manufacturing process Methods 0.000 abstract description 2
- 235000012431 wafers Nutrition 0.000 description 27
- 230000008569 process Effects 0.000 description 20
- 230000004888 barrier function Effects 0.000 description 9
- 238000005272 metallurgy Methods 0.000 description 7
- 239000007789 gas Substances 0.000 description 6
- 238000005530 etching Methods 0.000 description 5
- 239000000463 material Substances 0.000 description 5
- 208000029523 Interstitial Lung disease Diseases 0.000 description 4
- 238000005229 chemical vapour deposition Methods 0.000 description 4
- 238000012545 processing Methods 0.000 description 4
- 238000007796 conventional method Methods 0.000 description 3
- 239000000126 substance Substances 0.000 description 3
- JUZTWRXHHZRLED-UHFFFAOYSA-N [Si].[Cu].[Cu].[Cu].[Cu].[Cu] Chemical compound [Si].[Cu].[Cu].[Cu].[Cu].[Cu] JUZTWRXHHZRLED-UHFFFAOYSA-N 0.000 description 2
- 229910021360 copper silicide Inorganic materials 0.000 description 2
- 238000005137 deposition process Methods 0.000 description 2
- 238000009792 diffusion process Methods 0.000 description 2
- 238000001459 lithography Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000001020 plasma etching Methods 0.000 description 2
- 238000005498 polishing Methods 0.000 description 2
- 238000004544 sputter deposition Methods 0.000 description 2
- 238000007740 vapor deposition Methods 0.000 description 2
- BLRPTPMANUNPDV-UHFFFAOYSA-N Silane Chemical compound [SiH4] BLRPTPMANUNPDV-UHFFFAOYSA-N 0.000 description 1
- 238000010420 art technique Methods 0.000 description 1
- 230000015556 catabolic process Effects 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000011109 contamination Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 230000009977 dual effect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- RTZKZFJDLAIYFH-UHFFFAOYSA-N ether Substances CCOCC RTZKZFJDLAIYFH-UHFFFAOYSA-N 0.000 description 1
- 150000002500 ions Chemical class 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- -1 poly (arylene ether Chemical compound 0.000 description 1
- 230000004044 response Effects 0.000 description 1
- 229910000077 silane Inorganic materials 0.000 description 1
- 238000005382 thermal cycling Methods 0.000 description 1
- 230000036962 time dependent Effects 0.000 description 1
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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
- H01L21/04—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
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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
- H01L21/70—Manufacture or treatment of devices consisting of a plurality of solid state components formed in or on a common substrate or of parts thereof; Manufacture of integrated circuit devices or of parts thereof
- 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
- H01L21/76843—Barrier, adhesion or liner layers formed in openings in a dielectric
- H01L21/76844—Bottomless liners
-
- 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
- H01L21/70—Manufacture or treatment of devices consisting of a plurality of solid state components formed in or on a common substrate or of parts thereof; Manufacture of integrated circuit devices or of parts thereof
- 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
- H01L21/76801—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 dielectrics, e.g. smoothing
- H01L21/76802—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 dielectrics, e.g. smoothing by forming openings in dielectrics
- H01L21/76805—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 dielectrics, e.g. smoothing by forming openings in dielectrics the opening being a via or contact hole penetrating the underlying conductor
-
- 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
- H01L21/70—Manufacture or treatment of devices consisting of a plurality of solid state components formed in or on a common substrate or of parts thereof; Manufacture of integrated circuit devices or of parts thereof
- 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
- H01L21/76853—Barrier, adhesion or liner layers characterized by particular after-treatment steps
- H01L21/76865—Selective removal of parts of the layer
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- General Physics & Mathematics (AREA)
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- Microelectronics & Electronic Packaging (AREA)
- Power Engineering (AREA)
- Internal Circuitry In Semiconductor Integrated Circuit Devices (AREA)
Abstract
【解決手段】 半導体ウエハのための相互接続構造上に金属層を堆積するための方法を開示する。この方法において、金属導体を誘電層によって被覆する。誘電層をパターニングして、金属導体を露出させる。次いで、パターン内にライナ層を堆積する。次いで、ライナ層をアルゴン・スパッタ・エッチングして、ライナ層を除去すると共に金属導体を露出させる。アルゴン・スパッタ・エッチングでは、ライナ層はパターンの側壁に再堆積する。最後に、パターン内に追加層を堆積して、再堆積したライナ層を覆う。
Description
(a)誘電層によって被覆された金属導体を含む相互接続構造を設けるステップと、
(b)誘電層をパターニングして金属導体を露出させる開口を形成するステップと、
(c)開口の壁および底部にライナ層を堆積するステップと、
(d)ライナ層をスパッタ・エッチングして金属導体を露出させ、ライナ層を開口の側壁に少なくとも部分的に再堆積させるステップと、
(e)開口の壁に少なくとも1つの追加層を堆積し、再堆積したライナ層を覆うステップと、
を有する。
(a)キャッピング層および誘電層によって被覆された金属導体を含む相互接続構造を設けるステップと、
(b)誘電層およびキャッピング層をパターニングして金属導体を露出させる開口を形成するステップと、
(c)開口の壁および底部にライナ層を堆積するステップと、
(d)ライナ層をスパッタ・エッチングして金属導体を露出させ、ライナ層を開口の側壁に少なくとも部分的に再堆積させるステップと、
(e)開口の壁に少なくとも1つの追加層を堆積し、再堆積したライナ層を覆うステップと、
を有する。
Claims (20)
- 半導体ウエハのための相互接続構造上に金属層を堆積するための方法であって、
(a)誘電層によって被覆された金属導体を含む相互接続構造を設けるステップと、
(b)前記誘電層をパターニングして前記金属導体を露出させる開口を形成するステップと、
(c)前記開口の壁および底部にライナ層を堆積するステップと、
(d)前記ライナ層をスパッタ・エッチングして前記金属導体を露出させ、前記ライナ層を前記開口の側壁に少なくとも部分的に再堆積させるステップと、
(e)前記開口の前記壁に少なくとも1つの追加層を堆積し、前記再堆積したライナ層を覆うステップと、
を有する、方法。 - 前記ライナ層が、TaN、Ta、Ti、Ti(Si)N、およびWから成る群から選択され、前記追加層が、TaN、Ta、Ti、Ti(Si)N、W、およびCuから成る群から選択される、請求項1に記載の方法。
- 前記開口に銅を充填するステップを更に備える、請求項1に記載の方法。
- 前記開口がバイアまたはトレンチである、請求項1に記載の方法。
- 前記金属導体が、銅、タングステン、およびアルミニウムから成る群から選択される、請求項1に記載の方法。
- 前記スパッタ・エッチングのためのガスが、Ar、He、Ne、Xe、N2、H2、NH3、N2H2、またはそれらの混合物から成る群から選択される、請求項1に記載の方法。
- 前記スパッタ・エッチングのステップにおいて、前記スパッタ・エッチングが前記金属導体の上面上で停止する、請求項1に記載の方法。
- 前記スパッタ・エッチングのステップにおいて、前記スパッタ・エッチングが、前記金属導体を少なくとも部分的にスパッタ・エッチングした後に停止する、請求項1に記載の方法。
- 前記ライナ層の堆積ステップと前記少なくとも1つの追加層の堆積ステップとの間に前記ウエハを気中に露呈する、請求項1に記載の方法。
- 半導体ウエハのための相互接続構造上に金属層を堆積するための方法であって、
(a)キャッピング層および誘電層によって被覆された金属導体を含む相互接続構造を設けるステップと、
(b)前記誘電層およびキャッピング層をパターニングして前記金属導体を露出させる開口を形成するステップと、
(c)前記開口の壁および底部にライナ層を堆積するステップと、
(d)前記ライナ層をスパッタ・エッチングして前記金属導体を露出させ、前記ライナ層を前記開口の側壁に少なくとも部分的に再堆積させるステップと、
(e)前記開口の前記壁に少なくとも1つの追加層を堆積し、前記再堆積したライナ層を覆うステップと、
を有する、方法。 - 前記キャッピング層が、窒化シリコン、炭化シリコン、酸炭化シリコン、水素化炭化シリコン、二酸化シリコン、有機シリケート・ガラス、および他の低k誘電材料から成る群から選択される、請求項10に記載の方法。
- 前記キャッピング層が前記誘電層よりも厚さが薄い、請求項10に記載の方法。
- 前記ライナ層が、TaN、Ta、Ti、Ti(Si)N、およびWから成る群から選択され、前記追加層が、TaN、Ta、Ti、Ti(Si)N、W、およびCuから成る群から選択される、請求項10に記載の方法。
- 前記開口に銅を充填するステップを更に備える、請求項10に記載の方法。
- 前記開口がバイアまたはトレンチである、請求項10に記載の方法。
- 前記金属導体が、銅、タングステン、およびアルミニウムから成る群から選択される、請求項10に記載の方法。
- 前記スパッタ・エッチングのためのガスが、Ar、He、Ne、Xe、N2、H2、NH3、N2H2、またはそれらの混合物から成る群から選択される、請求項10に記載の方法。
- 前記スパッタ・エッチングのステップにおいて、前記スパッタ・エッチングが前記金属導体の上面上で停止する、請求項10に記載の方法。
- 前記スパッタ・エッチングのステップにおいて、前記スパッタ・エッチングが、前記金属導体を少なくとも部分的にスパッタ・エッチングした後に停止する、請求項10に記載の方法。
- 前記ライナ層の堆積ステップと前記少なくとも1つの追加層の堆積ステップとの間に前記ウエハを気中に露呈する、請求項1に記載の方法。
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US10/318,605 US6949461B2 (en) | 2002-12-11 | 2002-12-11 | Method for depositing a metal layer on a semiconductor interconnect structure |
US10/318,605 | 2002-12-11 | ||
PCT/EP2003/050958 WO2004053926A2 (en) | 2002-12-11 | 2003-12-08 | A method for depositing a metal layer on a semiconductor interconnect structure |
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JP2006518927A true JP2006518927A (ja) | 2006-08-17 |
JP4767541B2 JP4767541B2 (ja) | 2011-09-07 |
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US (1) | US6949461B2 (ja) |
EP (1) | EP1570518A2 (ja) |
JP (1) | JP4767541B2 (ja) |
KR (1) | KR100702549B1 (ja) |
CN (1) | CN100461369C (ja) |
AU (1) | AU2003300263A1 (ja) |
TW (1) | TWI236099B (ja) |
WO (1) | WO2004053926A2 (ja) |
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Also Published As
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WO2004053926A2 (en) | 2004-06-24 |
AU2003300263A8 (en) | 2004-06-30 |
KR100702549B1 (ko) | 2007-04-04 |
US20040115928A1 (en) | 2004-06-17 |
WO2004053926A3 (en) | 2004-11-25 |
US6949461B2 (en) | 2005-09-27 |
EP1570518A2 (en) | 2005-09-07 |
TWI236099B (en) | 2005-07-11 |
TW200421542A (en) | 2004-10-16 |
CN1947236A (zh) | 2007-04-11 |
AU2003300263A1 (en) | 2004-06-30 |
CN100461369C (zh) | 2009-02-11 |
KR20050086476A (ko) | 2005-08-30 |
JP4767541B2 (ja) | 2011-09-07 |
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