JP4416450B2 - 半導体素子の金属配線形成方法 - Google Patents
半導体素子の金属配線形成方法 Download PDFInfo
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- 238000000034 method Methods 0.000 title claims description 65
- 239000004065 semiconductor Substances 0.000 title claims description 36
- 229910052751 metal Inorganic materials 0.000 title claims description 31
- 239000002184 metal Substances 0.000 title claims description 31
- 239000010409 thin film Substances 0.000 claims description 72
- 239000010949 copper Substances 0.000 claims description 68
- 229910052802 copper Inorganic materials 0.000 claims description 50
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 49
- ATJFFYVFTNAWJD-UHFFFAOYSA-N Tin Chemical compound [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 claims description 33
- 230000008569 process Effects 0.000 claims description 25
- 239000010408 film Substances 0.000 claims description 21
- ZCYVEMRRCGMTRW-UHFFFAOYSA-N 7553-56-2 Chemical group [I] ZCYVEMRRCGMTRW-UHFFFAOYSA-N 0.000 claims description 20
- 238000005229 chemical vapour deposition Methods 0.000 claims description 20
- 238000000151 deposition Methods 0.000 claims description 16
- 229910052740 iodine Inorganic materials 0.000 claims description 16
- 230000008021 deposition Effects 0.000 claims description 15
- 229910052736 halogen Inorganic materials 0.000 claims description 15
- 150000002367 halogens Chemical class 0.000 claims description 15
- 239000011630 iodine Substances 0.000 claims description 15
- 239000003054 catalyst Substances 0.000 claims description 14
- 230000015572 biosynthetic process Effects 0.000 claims description 11
- 239000000376 reactant Substances 0.000 claims description 11
- 150000001875 compounds Chemical class 0.000 claims description 9
- GCSJLQSCSDMKTP-UHFFFAOYSA-N ethenyl(trimethyl)silane Chemical compound C[Si](C)(C)C=C GCSJLQSCSDMKTP-UHFFFAOYSA-N 0.000 claims description 9
- 238000000231 atomic layer deposition Methods 0.000 claims description 8
- 239000000758 substrate Substances 0.000 claims description 8
- 239000000460 chlorine Substances 0.000 claims description 6
- 238000011065 in-situ storage Methods 0.000 claims description 5
- 125000004429 atom Chemical group 0.000 claims description 4
- 125000005843 halogen group Chemical group 0.000 claims description 4
- QTBSBXVTEAMEQO-UHFFFAOYSA-M Acetate Chemical compound CC([O-])=O QTBSBXVTEAMEQO-UHFFFAOYSA-M 0.000 claims description 3
- WKBOTKDWSSQWDR-UHFFFAOYSA-N Bromine atom Chemical compound [Br] WKBOTKDWSSQWDR-UHFFFAOYSA-N 0.000 claims description 3
- ZAMOUSCENKQFHK-UHFFFAOYSA-N Chlorine atom Chemical compound [Cl] ZAMOUSCENKQFHK-UHFFFAOYSA-N 0.000 claims description 3
- PXGOKWXKJXAPGV-UHFFFAOYSA-N Fluorine Chemical compound FF PXGOKWXKJXAPGV-UHFFFAOYSA-N 0.000 claims description 3
- 229910052782 aluminium Inorganic materials 0.000 claims description 3
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 3
- 229910052789 astatine Inorganic materials 0.000 claims description 3
- RYXHOMYVWAEKHL-UHFFFAOYSA-N astatine atom Chemical compound [At] RYXHOMYVWAEKHL-UHFFFAOYSA-N 0.000 claims description 3
- GDTBXPJZTBHREO-UHFFFAOYSA-N bromine Substances BrBr GDTBXPJZTBHREO-UHFFFAOYSA-N 0.000 claims description 3
- 229910052794 bromium Inorganic materials 0.000 claims description 3
- 229910052801 chlorine Inorganic materials 0.000 claims description 3
- 229910052731 fluorine Inorganic materials 0.000 claims description 3
- 239000011737 fluorine Substances 0.000 claims description 3
- 230000000737 periodic effect Effects 0.000 claims description 3
- 229910052715 tantalum Inorganic materials 0.000 claims description 3
- GUVRBAGPIYLISA-UHFFFAOYSA-N tantalum atom Chemical compound [Ta] GUVRBAGPIYLISA-UHFFFAOYSA-N 0.000 claims description 3
- WFKWXMTUELFFGS-UHFFFAOYSA-N tungsten Chemical compound [W] WFKWXMTUELFFGS-UHFFFAOYSA-N 0.000 claims description 3
- 229910052721 tungsten Inorganic materials 0.000 claims description 3
- 239000010937 tungsten Substances 0.000 claims description 3
- 239000007795 chemical reaction product Substances 0.000 claims description 2
- 238000002513 implantation Methods 0.000 claims 3
- 238000001802 infusion Methods 0.000 claims 1
- OCVXZQOKBHXGRU-UHFFFAOYSA-N iodine(1+) Chemical compound [I+] OCVXZQOKBHXGRU-UHFFFAOYSA-N 0.000 claims 1
- 229910000077 silane Inorganic materials 0.000 claims 1
- HYWCXWRMUZYRPH-UHFFFAOYSA-N trimethyl(prop-2-enyl)silane Chemical compound C[Si](C)(C)CC=C HYWCXWRMUZYRPH-UHFFFAOYSA-N 0.000 claims 1
- 125000000391 vinyl group Chemical group [H]C([*])=C([H])[H] 0.000 claims 1
- 229920002554 vinyl polymer Polymers 0.000 claims 1
- 238000009792 diffusion process Methods 0.000 description 8
- 238000005137 deposition process Methods 0.000 description 4
- 238000002347 injection Methods 0.000 description 4
- 239000007924 injection Substances 0.000 description 4
- 239000012808 vapor phase Substances 0.000 description 4
- 230000007423 decrease Effects 0.000 description 3
- 230000002265 prevention Effects 0.000 description 3
- 230000009467 reduction Effects 0.000 description 3
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 2
- 230000004888 barrier function Effects 0.000 description 2
- XMBWDFGMSWQBCA-UHFFFAOYSA-N hydrogen iodide Chemical compound I XMBWDFGMSWQBCA-UHFFFAOYSA-N 0.000 description 2
- 239000010703 silicon Substances 0.000 description 2
- 229910052710 silicon Inorganic materials 0.000 description 2
- 238000007740 vapor deposition Methods 0.000 description 2
- 239000012691 Cu precursor Substances 0.000 description 1
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 1
- 229910010413 TiO 2 Inorganic materials 0.000 description 1
- 230000003197 catalytic effect Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 229910000043 hydrogen iodide Inorganic materials 0.000 description 1
- PNDPGZBMCMUPRI-UHFFFAOYSA-N iodine Chemical compound II PNDPGZBMCMUPRI-UHFFFAOYSA-N 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 238000000206 photolithography Methods 0.000 description 1
- 229910052814 silicon oxide Inorganic materials 0.000 description 1
- 238000001179 sorption measurement Methods 0.000 description 1
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- 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
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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
- H01L21/76843—Barrier, adhesion or liner layers formed in openings in a dielectric
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- 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
- 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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- H01L21/00—Processes or apparatus adapted for the manufacture or treatment of semiconductor or solid state devices or of parts thereof
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- 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
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- 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
- H01L21/28562—Selective deposition
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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
- H01L21/76871—Layers specifically deposited to enhance or enable the nucleation of further layers, i.e. seed layers
- H01L21/76876—Layers specifically deposited to enhance or enable the nucleation of further layers, i.e. seed layers for deposition from the gas phase, e.g. CVD
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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
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- Power Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Internal Circuitry In Semiconductor Integrated Circuit Devices (AREA)
- Electrodes Of Semiconductors (AREA)
- Chemical Vapour Deposition (AREA)
Description
TiI4+NH3⇒TiN(s)+HI(g)+I(ad)
ここで、TiN薄膜を作るためのTiI4とNH3反応物は同時に反応炉内に供給することもでき、またALD(atomic layer deposition)で順次に注入(sequential injection)する形態でも供給することもできる。
上記のように、ボトムアップ(bottom−up;下から上への)充填の形態でコンタクトホール15の内部がほとんど充填された時、底部からの銅薄膜成長速度は最大値を有する。
13 絶縁膜
15 コンタクトホール
17 TiN薄膜
19a、19b、19c 銅薄膜
A ヨウ素原子
Claims (17)
- 半導体基板上にハロゲン元素を含むTi化合物とNH3 の反応を利用したCVD法によりTiN薄膜を形成すると同時に、TiN薄膜の表面に前記ハロゲン元素の原子を吸着させる段階と、
前記吸着されたハロゲン原子を触媒として利用して前記TiN薄膜上に銅薄膜を形成する段階とを含み、
前記銅薄膜は、化学気相蒸着(CVD)法を利用して蒸着されることを特徴とする半導体素子の金属配線形成方法。 - 前記銅薄膜は、TiN薄膜形成後にイン−シトゥ(in−situ)で、ヘキサフルオロアセチルアセトネートCuビニルトリメチルシラン((hexafluoacethyl acetonate:hfac)Cu(vinyl trimethyl−silane))反応物、Cu(hfac)2、(hfac)Cu(cyclooctadiene:COD)、(hfac)(Cu)(allyltrimethylsilane:ATMS)からなる群より1つを選択して用い形成することを特徴とする請求項1に記載の半導体素子の金属配線形成方法。
- 前記銅薄膜を形成する段階は、コンタクトホールパターンまたはトレンチパターンが適用されることを特徴とする請求項1に記載の半導体素子の金属配線形成方法。
- 前記銅薄膜以外に、タングステン、アルミニウム、及びタンタル薄膜のうちから少なくとも1つを選択して使用することを特徴とする請求項2に記載の半導体素子の金属配線形成方法。
- 前記ハロゲン元素は、周期律表の17族に該当し、ハロゲン元素としてはヨウ素(I)及びフッ素(F)、塩素(Cl)、臭素(Br)、アスタチン(At)を含むことを特徴とする請求項1に記載の半導体素子の金属配線形成方法。
- 前記TiN薄膜と銅薄膜の形成は、工程温度150℃〜300℃で、工程圧力は0.1〜10Torr下で形成されることを特徴とする請求項1に記載の半導体素子の金属配線形成方法。
- 前記Ti化合物とNH3の注入は、同時に注入する形態、またはALD(atomic layer deposition)で順次に注入する形態で行うことを特徴とする請求項1に記載の半導体素子の金属配線形成方法。
- 前記TiN薄膜は、プラズマを利用して形成されることを特徴とする請求項1に記載の半導体素子の金属配線形成方法。
- 前記Ti化合物としては、TiI4が含まれ、吸着されたハロゲン元素はヨウ素であることを特徴とする請求項1に記載の半導体素子の金属配線形成方法。
- 前記TiN薄膜と銅薄膜の蒸着は、一つのチャンバー内で行われることを特徴とする請求項1に記載の半導体素子の金属配線形成方法。
- 半導体基板上に絶縁膜を形成した後に、その絶縁膜にコンタクトホールを形成する段階と、
前記コンタクトホールを含んだ絶縁膜上にハロゲン元素を含むTi化合物とNH3 の反応を利用したCVD法によりTiN薄膜を形成すると同時に、TiN薄膜の表面に前記ハロゲン元素の原子を吸着させる段階と、
前記吸着されたハロゲン原子を触媒として利用して前記TiN薄膜上に銅薄膜を形成してコンタクトホールを充填する段階とを含み、
前記銅薄膜は、化学気相蒸着(CVD)法を利用して蒸着されることを特徴とする半導体素子の金属配線形成方法。 - 前記銅薄膜は、化学気相蒸着法を利用して蒸着し、TiN薄膜の形成後にイン−シトゥ(in−situ)で、ヘキサフルオロアセチルアセトネートCuビニールトリメチルシラン(hexafluoacethyl acetonate)Cu(vinyl tri methyl−silane)反応物、Cu(hfac)2、(hfac)Cu(COD)、(hfac)(Cu)(ATMS)からなる群より1つを選択して用い形成することを特徴とする請求項11に記載の半導体素子の金属配線形成方法。
- 前記銅薄膜の以外に、タングステン、アルミニウム、及びタンタル薄膜のうちから少なくとも1つを選択して使用することを特徴とする請求項11に記載の半導体素子の金属配線形成方法。
- 前記ハロゲン元素は、周期律表の17族に該当し、ハロゲン元素としてはヨウ素(I)以外にフッ素(F)、塩素(Cl)、臭素(Br)、アスタチン(At)を含むことを特徴とする請求項11に記載の半導体素子の金属配線形成方法。
- 前記TiN薄膜と銅薄膜の形成は、工程温度150℃〜300℃で、工程圧力は0.1〜10Torr下で形成されることを特徴とする請求項11に記載の半導体素子の金属配線形成方法。
- 前記Ti化合物とNH3の注入は、同時に注入する形態、またはALD(atomic layer deposition)で順次に注入する形態で行うことを特徴とする請求項11に記載の半導体素子の金属配線形成方法。
- 前記Ti化合物としては、TiI4が含まれ、吸着されたハロゲン元素はヨウ素であることを特徴とする請求項11に記載の半導体素子の金属配線形成方法。
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US7833893B2 (en) * | 2007-07-10 | 2010-11-16 | International Business Machines Corporation | Method for forming conductive structures |
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US5909637A (en) | 1996-09-20 | 1999-06-01 | Sharp Microelectronics Technology, Inc. | Copper adhesion to a diffusion barrier surface and method for same |
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US6297147B1 (en) | 1998-06-05 | 2001-10-02 | Applied Materials, Inc. | Plasma treatment for ex-situ contact fill |
KR100566905B1 (ko) * | 1998-09-11 | 2006-07-03 | 에이에스엠지니텍코리아 주식회사 | 표면 촉매를 이용한 화학 증착방법_ |
JP3519632B2 (ja) | 1999-03-11 | 2004-04-19 | 株式会社東芝 | 半導体装置の製造方法 |
AU1088401A (en) * | 1999-10-15 | 2001-04-30 | Asm Microchemistry Oy | Deposition of transition metal carbides |
WO2001045149A1 (en) * | 1999-12-15 | 2001-06-21 | Genitech Co., Ltd. | Method of forming copper interconnections and thin films using chemical vapor deposition with catalyst |
US6423201B1 (en) | 2000-08-23 | 2002-07-23 | Applied Materials, Inc. | Method of improving the adhesion of copper |
KR100738774B1 (ko) * | 2000-08-28 | 2007-07-12 | 제이에스알 가부시끼가이샤 | 화학 기계 연마 스토퍼막, 그의 제조 방법 및 화학 기계연마 방법 |
KR100671610B1 (ko) | 2000-10-26 | 2007-01-18 | 주식회사 하이닉스반도체 | 반도체 소자의 금속 배선 형성 방법 |
US6472023B1 (en) * | 2001-07-10 | 2002-10-29 | Chang Chun Petrochemical Co., Ltd. | Seed layer of copper interconnection via displacement |
-
2002
- 2002-12-11 KR KR10-2002-0078658A patent/KR100487639B1/ko not_active IP Right Cessation
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2003
- 2003-07-24 US US10/626,890 patent/US6812144B2/en not_active Expired - Fee Related
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JP2004193554A (ja) | 2004-07-08 |
KR20040051700A (ko) | 2004-06-19 |
KR100487639B1 (ko) | 2005-05-03 |
US6812144B2 (en) | 2004-11-02 |
US20040152300A1 (en) | 2004-08-05 |
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