WO2006022319A1 - プラズマ成膜方法及びその装置 - Google Patents
プラズマ成膜方法及びその装置 Download PDFInfo
- Publication number
- WO2006022319A1 WO2006022319A1 PCT/JP2005/015407 JP2005015407W WO2006022319A1 WO 2006022319 A1 WO2006022319 A1 WO 2006022319A1 JP 2005015407 W JP2005015407 W JP 2005015407W WO 2006022319 A1 WO2006022319 A1 WO 2006022319A1
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- WO
- WIPO (PCT)
- Prior art keywords
- gas
- film
- fluorine
- plasma
- volume ratio
- Prior art date
Links
- 238000000034 method Methods 0.000 title claims abstract description 40
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims abstract description 66
- 229910052799 carbon Inorganic materials 0.000 claims abstract description 65
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 60
- 230000015572 biosynthetic process Effects 0.000 claims abstract description 23
- 230000001603 reducing effect Effects 0.000 claims abstract description 10
- 239000002344 surface layer Substances 0.000 claims abstract description 8
- 239000000126 substance Substances 0.000 claims abstract description 6
- 238000012545 processing Methods 0.000 claims description 33
- 239000000758 substrate Substances 0.000 claims description 6
- 238000005137 deposition process Methods 0.000 claims description 2
- 238000004334 fluoridation Methods 0.000 claims description 2
- 238000005273 aeration Methods 0.000 claims 1
- 239000011737 fluorine Substances 0.000 abstract description 24
- 229910052731 fluorine Inorganic materials 0.000 abstract description 24
- 238000010438 heat treatment Methods 0.000 abstract description 10
- 230000007423 decrease Effects 0.000 abstract description 4
- 230000001747 exhibiting effect Effects 0.000 abstract 2
- PXGOKWXKJXAPGV-UHFFFAOYSA-N Fluorine Chemical compound FF PXGOKWXKJXAPGV-UHFFFAOYSA-N 0.000 abstract 1
- 230000008030 elimination Effects 0.000 abstract 1
- 238000003379 elimination reaction Methods 0.000 abstract 1
- 239000010408 film Substances 0.000 description 203
- 239000007789 gas Substances 0.000 description 195
- YCKRFDGAMUMZLT-UHFFFAOYSA-N Fluorine atom Chemical compound [F] YCKRFDGAMUMZLT-UHFFFAOYSA-N 0.000 description 23
- 239000011229 interlayer Substances 0.000 description 19
- 235000012431 wafers Nutrition 0.000 description 17
- 238000005259 measurement Methods 0.000 description 15
- 239000002994 raw material Substances 0.000 description 15
- 238000000151 deposition Methods 0.000 description 13
- 230000008021 deposition Effects 0.000 description 11
- 230000008569 process Effects 0.000 description 11
- KRHYYFGTRYWZRS-UHFFFAOYSA-N Fluorane Chemical compound F KRHYYFGTRYWZRS-UHFFFAOYSA-N 0.000 description 9
- 229910052739 hydrogen Inorganic materials 0.000 description 9
- 239000004065 semiconductor Substances 0.000 description 9
- 239000010410 layer Substances 0.000 description 8
- 239000008188 pellet Substances 0.000 description 8
- 238000012360 testing method Methods 0.000 description 8
- 238000007872 degassing Methods 0.000 description 7
- 239000012071 phase Substances 0.000 description 7
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 6
- 230000000052 comparative effect Effects 0.000 description 6
- 238000003795 desorption Methods 0.000 description 6
- 239000001257 hydrogen Substances 0.000 description 6
- 229910000040 hydrogen fluoride Inorganic materials 0.000 description 6
- 238000010521 absorption reaction Methods 0.000 description 5
- XKRFYHLGVUSROY-UHFFFAOYSA-N Argon Chemical compound [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 description 4
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 description 4
- 229910002091 carbon monoxide Inorganic materials 0.000 description 4
- 239000004020 conductor Substances 0.000 description 4
- 239000010949 copper Substances 0.000 description 4
- 230000000694 effects Effects 0.000 description 4
- 238000004519 manufacturing process Methods 0.000 description 4
- LIVNPJMFVYWSIS-UHFFFAOYSA-N silicon monoxide Chemical compound [Si-]#[O+] LIVNPJMFVYWSIS-UHFFFAOYSA-N 0.000 description 4
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 3
- 238000000137 annealing Methods 0.000 description 3
- 229910052802 copper Inorganic materials 0.000 description 3
- 238000001514 detection method Methods 0.000 description 3
- NBVXSUQYWXRMNV-UHFFFAOYSA-N fluoromethane Chemical compound FC NBVXSUQYWXRMNV-UHFFFAOYSA-N 0.000 description 3
- 150000002431 hydrogen Chemical class 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 239000012528 membrane Substances 0.000 description 3
- 238000000746 purification Methods 0.000 description 3
- 229910052814 silicon oxide Inorganic materials 0.000 description 3
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 2
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 2
- BOTDANWDWHJENH-UHFFFAOYSA-N Tetraethyl orthosilicate Chemical compound CCO[Si](OCC)(OCC)OCC BOTDANWDWHJENH-UHFFFAOYSA-N 0.000 description 2
- 238000004458 analytical method Methods 0.000 description 2
- 229910052786 argon Inorganic materials 0.000 description 2
- 239000005380 borophosphosilicate glass Substances 0.000 description 2
- 230000008859 change Effects 0.000 description 2
- 238000005229 chemical vapour deposition Methods 0.000 description 2
- 125000004122 cyclic group Chemical group 0.000 description 2
- 238000000354 decomposition reaction Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 239000003989 dielectric material Substances 0.000 description 2
- 239000011777 magnesium Substances 0.000 description 2
- QLOAVXSYZAJECW-UHFFFAOYSA-N methane;molecular fluorine Chemical compound C.FF QLOAVXSYZAJECW-UHFFFAOYSA-N 0.000 description 2
- TWNQGVIAIRXVLR-UHFFFAOYSA-N oxo(oxoalumanyloxy)alumane Chemical compound O=[Al]O[Al]=O TWNQGVIAIRXVLR-UHFFFAOYSA-N 0.000 description 2
- 238000003825 pressing Methods 0.000 description 2
- 238000004904 shortening Methods 0.000 description 2
- 229910052710 silicon Inorganic materials 0.000 description 2
- 239000010703 silicon Substances 0.000 description 2
- 238000001179 sorption measurement Methods 0.000 description 2
- MZLGASXMSKOWSE-UHFFFAOYSA-N tantalum nitride Chemical compound [Ta]#N MZLGASXMSKOWSE-UHFFFAOYSA-N 0.000 description 2
- 239000010409 thin film Substances 0.000 description 2
- 238000011144 upstream manufacturing Methods 0.000 description 2
- JPMVRUQJBIVGTQ-UHFFFAOYSA-N 1,1,2,3,4,5,5,5-octafluoropenta-1,3-diene Chemical compound FC(F)=C(F)C(F)=C(F)C(F)(F)F JPMVRUQJBIVGTQ-UHFFFAOYSA-N 0.000 description 1
- 229910000838 Al alloy Inorganic materials 0.000 description 1
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 1
- ZOXJGFHDIHLPTG-UHFFFAOYSA-N Boron Chemical compound [B] ZOXJGFHDIHLPTG-UHFFFAOYSA-N 0.000 description 1
- MYMOFIZGZYHOMD-UHFFFAOYSA-N Dioxygen Chemical compound O=O MYMOFIZGZYHOMD-UHFFFAOYSA-N 0.000 description 1
- KRHYYFGTRYWZRS-UHFFFAOYSA-M Fluoride anion Chemical compound [F-] KRHYYFGTRYWZRS-UHFFFAOYSA-M 0.000 description 1
- FYYHWMGAXLPEAU-UHFFFAOYSA-N Magnesium Chemical compound [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 description 1
- 235000016496 Panda oleosa Nutrition 0.000 description 1
- 240000000220 Panda oleosa Species 0.000 description 1
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 description 1
- 229910052581 Si3N4 Inorganic materials 0.000 description 1
- NRTOMJZYCJJWKI-UHFFFAOYSA-N Titanium nitride Chemical compound [Ti]#N NRTOMJZYCJJWKI-UHFFFAOYSA-N 0.000 description 1
- 229910021536 Zeolite Inorganic materials 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 230000003213 activating effect Effects 0.000 description 1
- 230000004913 activation Effects 0.000 description 1
- VRAIHTAYLFXSJJ-UHFFFAOYSA-N alumane Chemical compound [AlH3].[AlH3] VRAIHTAYLFXSJJ-UHFFFAOYSA-N 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
- 238000013459 approach Methods 0.000 description 1
- 229910052796 boron Inorganic materials 0.000 description 1
- 230000005587 bubbling Effects 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 239000013078 crystal Substances 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- 238000009792 diffusion process Methods 0.000 description 1
- 229910001873 dinitrogen Inorganic materials 0.000 description 1
- HNPSIPDUKPIQMN-UHFFFAOYSA-N dioxosilane;oxo(oxoalumanyloxy)alumane Chemical compound O=[Si]=O.O=[Al]O[Al]=O HNPSIPDUKPIQMN-UHFFFAOYSA-N 0.000 description 1
- 229910001882 dioxygen Inorganic materials 0.000 description 1
- 230000009977 dual effect Effects 0.000 description 1
- 230000005684 electric field Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 125000004435 hydrogen atom Chemical group [H]* 0.000 description 1
- 230000010354 integration Effects 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 229910052743 krypton Inorganic materials 0.000 description 1
- DNNSSWSSYDEUBZ-UHFFFAOYSA-N krypton atom Chemical compound [Kr] DNNSSWSSYDEUBZ-UHFFFAOYSA-N 0.000 description 1
- 238000010030 laminating Methods 0.000 description 1
- 238000001285 laser absorption spectroscopy Methods 0.000 description 1
- 239000007791 liquid phase Substances 0.000 description 1
- 229910052749 magnesium Inorganic materials 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 229910044991 metal oxide Inorganic materials 0.000 description 1
- 150000004706 metal oxides Chemical class 0.000 description 1
- 238000013508 migration Methods 0.000 description 1
- 230000005012 migration Effects 0.000 description 1
- 150000004767 nitrides Chemical class 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 229910052698 phosphorus Inorganic materials 0.000 description 1
- 239000011574 phosphorus Substances 0.000 description 1
- 230000010287 polarization Effects 0.000 description 1
- 238000005498 polishing Methods 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 239000011241 protective layer Substances 0.000 description 1
- 239000010453 quartz Substances 0.000 description 1
- 238000006748 scratching Methods 0.000 description 1
- 230000002393 scratching effect Effects 0.000 description 1
- 239000005368 silicate glass Substances 0.000 description 1
- HBMJWWWQQXIZIP-UHFFFAOYSA-N silicon carbide Chemical compound [Si+]#[C-] HBMJWWWQQXIZIP-UHFFFAOYSA-N 0.000 description 1
- 229910010271 silicon carbide Inorganic materials 0.000 description 1
- 239000000377 silicon dioxide Substances 0.000 description 1
- HQVNEWCFYHHQES-UHFFFAOYSA-N silicon nitride Chemical compound N12[Si]34N5[Si]62N3[Si]51N64 HQVNEWCFYHHQES-UHFFFAOYSA-N 0.000 description 1
- 125000006850 spacer group Chemical group 0.000 description 1
- 241000894007 species Species 0.000 description 1
- 238000004611 spectroscopical analysis Methods 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 239000007858 starting material Substances 0.000 description 1
- PQDJYEQOELDLCP-UHFFFAOYSA-N trimethylsilane Chemical compound C[SiH](C)C PQDJYEQOELDLCP-UHFFFAOYSA-N 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
- 239000010457 zeolite Substances 0.000 description 1
Classifications
-
- 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
- H01L21/02118—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 carbon based polymeric organic or inorganic material, e.g. polyimides, poly cyclobutene or PVC
- H01L21/0212—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 carbon based polymeric organic or inorganic material, e.g. polyimides, poly cyclobutene or PVC the material being fluoro carbon compounds, e.g.(CFx) n, (CHxFy) n or polytetrafluoroethylene
-
- 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
- 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
- C23C16/22—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 deposition of inorganic material, other than metallic material
- C23C16/26—Deposition of carbon only
-
- 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
- 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
- C23C16/4401—Means for minimising impurities, e.g. dust, moisture or residual gas, in the reaction chamber
- C23C16/4402—Reduction of impurities in the source gas
-
- 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
- H01L21/02225—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
- H01L21/02274—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 in the presence of a plasma [PECVD]
-
- 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
- H01L21/30—Treatment of semiconductor bodies using processes or apparatus not provided for in groups H01L21/20 - H01L21/26
- H01L21/31—Treatment of semiconductor bodies using processes or apparatus not provided for in groups H01L21/20 - H01L21/26 to form insulating layers thereon, e.g. for masking or by using photolithographic techniques; After treatment of these layers; Selection of materials for these layers
- H01L21/312—Organic layers, e.g. photoresist
- H01L21/3127—Layers comprising fluoro (hydro)carbon compounds, e.g. polytetrafluoroethylene
Definitions
- the present invention relates to a method and apparatus for forming a fluorine-added carbon film (a fluorocarbon film) used as, for example, an interlayer insulating film by plasma.
- a fluorine-added carbon film a fluorocarbon film
- the nth wiring layer and the (n + 1) th layer The wiring layer is connected with a conductive layer, and a thin film called an interlayer insulating film is formed in a region other than the conductive layer.
- a typical example of this interlayer insulating film is a silicon oxide film (SiO film).
- a fluorine-added carbon film which is a compound of carbon (C) and fluorine (F) has attracted attention. According to this fluorine-added carbon film, it is much larger than a silicon oxide film. The relative dielectric constant can be lowered.
- the fluorine-added carbon film is formed by a film-forming species obtained by converting a source gas composed of carbon (C) and fluorine (F) into plasma.
- raw material gas if CF gas, which is also known as CF gas, is used, its decomposition products will be
- Patent Document 1 uses a cyclic CF gas as a source gas, and a 2.45 GHz microphone.
- Electron cyclotron resonance is caused by the interaction between the mouth wave and the magnetic field of 875 gauss to convert the plasma generating gas such as Ar gas into plasma, and the GF
- a technique for forming a fluorine-added carbon film on a semiconductor wafer (hereinafter referred to as a wafer) by converting the gas into plasma is described.
- Patent Document 1 Japanese Patent Application Laid-Open No. 11 162960
- the raw material gas contains moisture, and conventionally, for example, the moisture concentration of the raw material gas in the gas cylinder is below the measurement limit of the Karl Fischer method or the like, and the amount cannot be accurately grasped. .
- water (HO) molecules are also contained in the film.
- the present invention has been made on the basis of such a background.
- An object of the present invention is to provide a plasma film forming method and apparatus capable of obtaining a fluorine-added carbon film having excellent thermal stability when forming a fluorine-added carbon film by plasma.
- CF moth moisture content is less 60 X 10_ 9 volume ratio
- another plasma film forming method of the present invention is a method in which CF gas from which moisture has been removed by passing it through a purifier filled with a substance having a hydrophilic or reducing surface layer is converted into plasma, and fluorine is removed.
- the plasma film-forming apparatus of the present invention includes a CF gas supply source, and converting the CF gas into plasma
- a film formation processing unit for forming a fluorine-added carbon film on the substrate, a supply path for connecting the supply source and the film formation processing unit, and supplying CF gas to the film formation processing unit,
- a purifier filled with a substance having a hydrophilic or reducing surface layer provided in a supply path.
- the gas outlet of the purifier is preferably provided in the vicinity of the gas inlet of the film forming unit.
- the water is removed so as to be below.
- the moisture content is converted into a plasma the 60 X 10_ 9 volume ratio following CF gas
- a fluorine-added carbon film is formed, so that a very small amount of water is taken into the fluorine-added carbon film. Therefore, it is possible to ensure a high thermal stability that is difficult to cause desorption of fluorine during heating in the subsequent process due to moisture in the fluorine-added carbon film.
- the CF gas is supplied to the film forming unit via the purifier.
- CF gas can be supplied to the film forming unit with a stable moisture content.
- the purifier is provided in the immediate vicinity of the film forming unit, that is, the gas exhaust port of the purifier is provided in the vicinity of the gas inlet of the film forming unit. Even if moisture adheres to the inner surface of the supply channel downstream of the vessel, the effect can be suppressed as much as possible, and CF gas can be supplied to the film forming unit with a more stable moisture content. .
- FIG. 1 is a schematic configuration diagram showing an example of a plasma film forming apparatus in which a plasma film forming method according to the present invention is implemented.
- FIG. 2 is a cross-sectional view showing a purifier and a film forming unit used in the plasma film forming apparatus.
- FIG. 3 is a sectional view showing an example of a semiconductor device provided with a fluorine-added carbon film as an interlayer insulating film.
- FIG. 4 is a plan view showing a second gas supply unit used in the film formation processing unit.
- FIG. 5 is a perspective view showing a partial cross section of an antenna unit used in the film forming unit.
- FIG. 1 is a schematic configuration diagram showing a plasma deposition apparatus of the present invention.
- a semiconductor wafer (hereinafter referred to as “wafer” t) W for forming an integrated circuit including CMOS is used as the substrate.
- reference numeral 1 denotes a source gas supply source according to the present invention, which includes, for example, a gas container 11 filled with the source gas.
- the example material gas, water content 100 X 10_ 9 body volume ratio (lOOppb) follows, for example 60 X 10- 9 volume ratio (60 ppb) of about CF gas is used
- CF gas for example, cyclic CF gas (l, 2, 3, 3, 4, 4, 5, 5-Octafluoro-l-cy
- the water content in the raw material gas is indicated by a volume ratio, and is obtained by the following equation.
- the water selectively to remove moisture of the feed gas by adsorption to material, moisture content, for example 20 X 10_ 9 volume ratio (20 ppb) extent and lesser CF gas A purifier 2 is provided.
- the gas container 11 is filled
- Water content was 60 X 10- 9 volume ratio of about CF gas as a starting material gas that, water purification unit 2
- the purifier 2 has an average particle size of 2 to 3 m in a purification vessel 21.
- m for example, is filled with a pellet made of a porous material such as zeolite, silica, alumina, metal oxide or the like.
- the pellets are subjected to a predetermined activation treatment, and the surface layer has hydrophilicity or a reducing action. In other words, this pellet has a hydrophilic or reducing surface layer.
- a film-forming gas from which a small amount of moisture has been removed by the purifier 2 is turned into plasma, and a film for forming a fluorine-added carbon film on Ueno and W is formed.
- a processing unit 3 is provided.
- the wafer W is placed on the mounting table 62, and the planar antenna member 76 made of, for example, a radial line slot antenna provided on the upper side of the mounting table 62 so as to face the mounting table 62.
- a microwave is supplied from a microwave generation source 79, a raw material gas and an argon (Ar) gas that is a plasma gas are introduced between the mounting table 62 and the planar antenna member 76, and the planar antenna member 76 is introduced.
- the film-forming gas is turned into plasma by the microwaves emitted from the substrate, whereby a fluorine-added carbon film is formed.
- valve VI is an opening / closing valve for gas container 11
- valves V2 and V3 are valves for opening / closing supply passage 4 provided before and after purifier 2.
- the gas container 11, the purifier 2, and the gas supply unit 68 (see FIG. 2) of the film formation processing unit 3 are connected by a supply path 4, and the purifier 2 is connected to the gas of the film formation processing unit 3. It is provided near the supply unit 68.
- the arrangement position of the purifier 2 is not particularly limited. However, if the purifier 2 is away from the film forming unit 3, for example, moisture adheres to the piping on the downstream side of the purifier 2 at the initial stage of operation. Then, since the moisture is taken into the film processing unit 3 or the material strength of the pipe may be scattered, the purifier 2 is placed near the film processing unit 3. It is preferable to have it.
- the specific value of “near” is the force S that seems to change in the structure of the entire system including the main body of the plasma deposition system, and the purifier 2 as much as possible in that structure.
- a configuration in which the purifier 2 is directly connected to the gas inlet on the film forming unit 3 side is preferable.
- a gas box including a gas cylinder and the film forming unit 3 are considerably separated, and a supply control unit in which devices such as valves and flow meters are arranged is provided in the middle!
- the purifier 2 is arranged closer to the film forming unit 3 than the supply control unit, it can be said that it is arranged “near”.
- the moisture in the CF gas is chemically changed as described above.
- the CF gas supplied to the film forming unit 3 has a moisture content of 20 X 10_ 9
- the amount of water is reduced to about a volume ratio and the amount of water is extremely low. Then, in the film deposition unit 3, the active by the water content is plasma the 20 X 10- 9 volume about CF gas Ar
- FIG. 3 shows an example of a semiconductor device provided with an interlayer insulating film made of a fluorine-added carbon film thus formed.
- Reference numeral 41 is a p-type silicon layer
- 42 and 43 are source and drain n-type regions
- 44 is a gate oxide film
- 45 is a gate electrode, which constitute a MOS transistor.
- 46 is a BPSG film (silicate glass film doped with boron (B) and phosphorus (P))
- 47 is a wiring with tungsten (W) power
- 48 is a side spacer.
- an interlayer insulating film 52 made of a fluorine-added carbon film (CF film) in which a wiring layer 51 having a copper force is embedded is stacked in multiple layers.
- CF film fluorine-added carbon film
- 53 is a hard mask made of silicon nitride or nitrogen-added calocarbon carbide (SiCN)
- 54 is a protective layer having force such as titanium nitride or tantalum nitride for preventing diffusion of wiring metal
- 55 is a protective film. It is.
- the interlayer insulating film 52 is heated to the process temperature of the heating step.
- heating examples of processes include insulating film deposition, copper wiring annealing, hard masks such as tantalum nitride annealing, etc., the highest heating process after the formation of interlayer insulating film 52 !, process temperature Is, for example, 350 ° C to 420 ° C. Note that the heat treatment temperature may decrease as the generation of semiconductor devices becomes smaller.
- the purifier 2 filled with a pellet having a hydrophilic or reducing surface layer since the purifier 2 filled with a pellet having a hydrophilic or reducing surface layer is used, a very small amount of water contained in the raw material gas is contained in the raw material gas. It is removed by chemisorption on the pellets, as will be apparent from the examples below.
- the moisture detection method used for confirming the effectiveness of the purifier 2 will be briefly described.
- the measurement of fluorine and water concentration of the CF-based gas comprised of carbon is carried out by quartz crystal vibrating and Karl Fischer method if example embodiment, was but substantially 6000 X 10_ following 9 volume ratio in these techniques
- the water content was too strong to measure.
- This present inventors used an infrared laser absorption spectroscopy was established a method capable of measuring 100 X 10_ 9 volume ratio below the water concentration in the CF-based gas.
- an infrared laser is used to irradiate light having a wavelength of 1392.53 nm to a measurement object, light transmitted through the measurement object is detected, and the intensity of the detection light reaches a certain threshold value.
- ⁇ is an index value of noise variation.
- the thermal stability means that there is little desorption of fluorine-based gases such as fluorine, hydrogen fluoride, and fluorine carbide when the formed fluorine-added carbon film is heated. .
- fluorine-based gases such as fluorine, hydrogen fluoride, and fluorine carbide
- the thermal stability means that there is little desorption of fluorine-based gases such as fluorine, hydrogen fluoride, and fluorine carbide when the formed fluorine-added carbon film is heated. .
- fluorine-based gases such as fluorine, hydrogen fluoride, and fluorine carbide
- Fluorine-containing carbon film desorption small instrument further moisture content of the fluorine-based gas such as hydrogen fluoride and the fluorocarbon is deposited by 2 0 X 10- 9 volume about ratio of CF gas, fluorine
- moisture content 60 X 10- 9 volume ratio or less preferably to be al moisture content using a 20 X 10- 9 volume ratio of about CF gas Caro
- the moisture content in the CF gas is unstable due to fluctuations in the moisture vapor pressure in the gas phase in the gas container 11 due to temperature changes.
- CF gas is separated into a gas phase and a liquid phase.
- the purifier 2 when the purifier 2 is provided, regardless of the moisture concentration in the raw material gas, the purifier 2 is passed through so that the moisture in the raw material gas is hydrophilic or has a reducing action.
- the moisture content of CF gas is almost always on the downstream side of the purifier 2.
- the purifier 2 is preferably provided in the immediate vicinity of the film forming unit 3.
- the supply path 4 is composed of, for example, a pipe whose inner surface is chemically polished.
- the purifier 2 and the film forming unit 3 are connected to each other. Since the supply path 4 is short, even if moisture adheres to the inner surface of the supply path 4, the influence can be suppressed as much as possible, and the film formation processing unit 3 can be kept in a state where the moisture content is more stable. This is because it can be supplied.
- the water content as described above is 60 X 10_ 9 volume ratio following CF Gasudea
- fluorine water content is formed using a 100 X 10- 9 volume ratio of about CF gas
- the film formation processing unit 3 is a CVD (Chemical Vapor Deposition) apparatus that generates plasma using a radial line slot antenna.
- 61 is a processing vessel (vacuum chamber)
- 62 is a mounting table equipped with temperature control means
- a 13.56 MHz bias high frequency power source 63 is connected to this mounting table 62, for example.
- a first gas supply unit 64 having a substantially circular planar shape, for example, is provided on the upper part of the processing container 61 so as to face the mounting table 62.
- the gas supply unit 64 is made of, for example, aluminum oxide, and a plurality of first gas supply holes 65 are formed on the surface facing the mounting table 62.
- the gas supply hole 65 communicates with the first gas supply path 67 through the gas flow path 66.
- the first gas supply path 67 is connected to a plasma gas such as argon (Ar) gas or krypton (Kr) gas and a hydrogen (H) gas supply source.
- a second gas supply unit 68 having a substantially circular planar shape is provided between the mounting table 62 and the first gas supply unit 64, for example.
- the second gas supply unit 68 is made of a conductor such as aluminum alloy containing magnesium (Mg) or aluminum-added stainless steel, and has a number of second gas supply holes on the surface facing the mounting table 62. 69 is formed. Inside the gas supply unit 68, for example, as shown in FIG. 4, a lattice-like gas flow channel 71 communicating with one end side of the gas supply hole 69 is formed. One end of path 4 is connected.
- the second gas supply unit 68 is formed with a large number of openings 72 so as to penetrate the gas supply unit 68.
- the opening 72 is for allowing plasma or a source gas in the plasma to pass through a space below the gas supply unit 68, and is formed, for example, between adjacent gas flow paths 71.
- the second gas supply unit 68 passes through the supply path 4 and the purifier 2, and the CF gas as the raw material gas is supplied.
- This CF gas is connected to the gas flow path 71 via the supply path 4 in sequence.
- the gas is uniformly supplied to the space below the second gas supply unit 68 through the gas supply hole 69.
- a cover plate 73 made of a dielectric material such as aluminum oxide is provided on the upper side of the first gas supply unit 64, and the cover plate 73 has an upper cover on the upper side.
- An antenna portion 74 is provided so as to be in close contact with the plate 73. As shown in FIG. 5, the antenna portion 74 is provided so as to close the flat antenna body 75 whose bottom surface side has a circular planar shape and the opening portion on the lower surface side of the antenna body 75, and has many openings.
- a flat antenna member (slot plate) 76 having a disk shape in which a slot is formed.
- the antenna body 75 and the flat antenna member 76 are made of a conductor and are flat and hollow.
- a circular waveguide is formed. The lower surface of the planar antenna member 76 is connected to the cover plate 73.
- a slow phase plate 77 made of a low-loss dielectric material such as acid aluminum aluminum nitride nitride (Si N).
- This retardation plate 77 is for shortening the wavelength of the microwave and shortening the guide wavelength in the waveguide.
- a radial line slot antenna (RLSA) is extinguished by these antenna main body 75, planar antenna member 76, and slow phase plate 77! /.
- the antenna unit 74 configured in this manner is not shown so that the planar antenna member 76 is in close contact with the cover plate 73, but is attached to the processing container 61 via a seal member.
- the antenna unit 74 is connected to an external microwave generating means 79 via a coaxial waveguide 78 so that, for example, a microwave having a frequency of 2.45 GHz or 8.3 GHz is supplied.
- the waveguide 78A outside the coaxial waveguide 78 is connected to the antenna body 75, and the center conductor 78B is connected to the planar antenna member 76 through an opening formed in the slow phase plate 77. .
- the planar antenna member 76 also has a copper plate force of, for example, a thickness of about 1 mm, and a plurality of slots 81 for generating, for example, circularly polarized waves are formed as shown in FIG.
- the slot 81 is formed, for example, concentrically or spirally along the circumferential direction, with a pair of slots 8 la and 8 lb arranged in a substantially T-shape slightly spaced apart.
- the slots 81a and 81b are arranged so as to be substantially orthogonal to each other, circularly polarized waves including two orthogonal polarization components are radiated.
- an exhaust pipe 82 is connected to the bottom of the processing container 61, and this exhaust pipe 82 is connected to a vacuum pump 84, which is a vacuum exhaust means, via a pressure adjusting unit 83, and the processing container 61 has a predetermined pressure. Can be evacuated.
- a wafer W as a substrate is loaded and placed on the mounting table 62.
- a vacuum is evacuated to a constant pressure, and plasma gas, for example, Ar gas is supplied to the first gas supply section 64 through the first gas supply path 67 at a predetermined flow rate, for example, 300 sccm, and the second gas is supplied through the supply path 4.
- the deposition gas, moisture content by purifier 2 is CF gas purified to about 20 X 10_ 9 volume ratio.
- the inside of the processing vessel 61 is maintained at a process pressure of 60 Pa, for example.
- microwave when a high frequency (microwave) of 2.45 GHz and 2000 W is supplied from the microwave generating means 79, this microwave propagates in the coaxial waveguide 78 in the TM mode, TE mode, or TEM mode, and the antenna.
- the slot pair 81a, 81b is reached while it reaches the planar antenna member 76 of the portion 74 and propagates radially from the center of the planar antenna member 76 toward the peripheral region via the inner conductor 78B of the coaxial waveguide.
- the microwaves are emitted from the cover plate 73 and the first gas supply unit 64 toward the processing space below the gas supply unit 64.
- the circularly polarized wave is uniformly emitted over the plane of the planar antenna member 76, and the electric field density in the processing space below is uniformized. It is done.
- the microwave energy excites high-density and uniform plasma over the entire processing space.
- the plasma flows into the processing space below the gas supply unit 68 via the opening 72 of the second gas supply unit 68, and is supplied from the gas supply unit 68 to the processing space. Activate CF gas, that is, plasm
- the active species thus generated are deposited on the surface of the wafer w, and an interlayer insulating film made of a fluorine-added carbon film is formed.
- the fluorine-containing carocarbon film of the present invention may be used as an insulating film other than the interlayer insulating film.
- the film formation processing unit of the present invention is not limited to the above-described method of generating plasma using the radial line slot antenna, but also a parallel plate type plasma film formation apparatus, a plasma film formation apparatus using electron cyclotron resonance, etc. Can be used.
- Example 1 Is a measurement test of moisture content in CF gas downstream of the purifier 2, Examples 2 and 3
- Example 4 is a test for adhesion of the fluorine-added carbon film.
- the water concentration in the gas container 11 is passed through a 60 X 10_ 9 volume ratio hereinafter the CF gas purifier 2, CF gas supply passage 4 downstream of the purifier 2 of
- the use of the purifier 2, CF gas force water content of about 60 X 10_ 9 volume ratio can also remove moisture, moisture content of about 20 X 10- 9 volume ratio C
- the water concentration 60 X 10_ 9 volume ratio of about CF gas, 20 X 10_ 9 volume ratio of water content by the purifier 2 about
- the film is processed and supplied to the film processing unit 3 where the processing atmosphere pressure is 60 Pa, the microwave power S2000W, the flow rate of CF gas is 200 sccm, and the flow rate of Ar gas is 300 sc.
- Fluoro-added carbon film was formed on Ueno and W of 8 inch size as cm.
- the length L of the pipe from the purifier 2 to the gas inlet in the film forming unit 3 was lm.
- the film thickness of the fluorine-added carbon film thus obtained was measured immediately after film formation, cut into approximately 10 mm squares, and TDS (Thermal Desorption Spectroscopy) measurement was performed.
- the moisture content in the gas was measured by infrared laser absorption.
- Example 3 the purifier 2 Do used, the same plasma film forming apparatus removal, Te and Example 2 that used used used in Example 2, water concentration 60 X 10- 9 volume CF gas
- Example 5 8 is supplied to the film formation processing unit 3, and a fluorine-added carbon film is formed under the same film formation conditions as in Example 2.
- a film was formed and TDS measurement was performed in the same manner. At this time, when the moisture content in the CF gas at the measurement point P closest to the film forming unit 3 was measured by infrared laser absorption, the moisture content was measured.
- the amount was confirmed to be about 60 X 10_ 9 volume ratio.
- the results are shown in Fig. 6 (b) and Fig. 7 (b).
- a tape test was conducted by laminating a nitrogen-doped silicon carbide film (SiCN film), a fluorine-added carbon film (CF film), a SiCN film, and a silicon oxide film (SiO film) in this order on a silicon bare wafer.
- SiCN film nitrogen-doped silicon carbide film
- CF film fluorine-added carbon film
- SiCN film silicon oxide film
- SiO film silicon oxide film
- the SiCN film was the same both above and below, and was formed with a film thickness of lOnm using the film forming apparatus provided with the film forming process 3 shown in FIG.
- the microwave power was set to 1500 W
- the process pressure was set to 39.9 Pa (300 mTorr)
- the wafer temperature was set to 380 ° C.
- trimethylsilane gas was 40 sccm
- Ar gas was 800 sccm
- nitrogen gas was 50 sccm.
- the flow rate was
- the fluorine-added carbon film was formed at a film pressure of 120 nm using the above-described film forming apparatus provided with the film forming processing unit 3 shown in FIG. Regarding the film formation conditions, the microwave power was set to 2750 W, the process pressure was set to 7.4 Pa (56 mTorr), the wafer temperature was set to 380 ° C, and C F
- Concentration used was the about 20 X 10_ 9 volume ratio.
- the SiO film is an organic source vapor such as TEOS (tetraethyl orthosilicate) and oxygen gas.
- TEOS tetraethyl orthosilicate
- oxygen gas oxygen gas
- the sample wafer on which the laminated film was obtained in this way was also subjected to a tape test through an annealing process at 400 ° C for 1 hour, which is expected in the actual semiconductor device manufacturing process.
- the tape test is performed by scratching the sample wafer with a size of about 2 mm square, attaching a scotch tape on it, and peeling off this tape.
- CF gas water concentration of about 100 X 10_ 9 volume ratio in the gas container was supplied to the film formation processing unit 3 to form a fluorine-added carbon film under the same film formation conditions as in Example 2, and TDS measurement was performed in the same manner. At this time, when the moisture content in the CF gas at the measurement point P closest to the film forming unit 3 was measured by infrared laser absorption, the moisture content was measured.
- a sample wafer was prepared in exactly the same manner as in Example 4, and a tape test was conducted in the same manner.
- Measurement targets are hydrogen (H), water (H 2 O), fluorine (F), hydrogen fluoride (HF), carbon monoxide (CO), fluoride
- FIG. 7 (a), (b), and (c) show the main parts of Figure 6 (a), (b), and (c) with different scales and measurement targets.
- the target is hydrogen (H), water (HO), fluorine (F), and fluorocarbon (CF).
- Fluoridation force water content was formed using a 100 X 10- 9 volume ratio of about CF gas
- H 2 O itself contained in the film evaporates and H 2 O decomposes
- Example 2 and Example 3 are compared, the amounts of H 0, H, CF, CO, and HF desorbed from the fluorine-added carbon film are the same, and these amounts Is more than Comparative Example 1
- Example 3 the amount of degassing increased rapidly from around 200 ° C, whereas in Example 2, 250 ° C The degassing amount suddenly increases from around the point where F is desorbed at different temperatures. This is desorbed at a high temperature as in Example 2. The F desorbed at around 200 ° C as in Example 3 is assumed to be free F due to the decomposition of the CF film due to the presence of HO.
- film peeling occurred on 3 out of 5 wafers. The place where peeling occurred was difficult to identify because the SiCN film was as thin as 10 nm. It occurred at the interface between the CF film and the upper SiCN film, or at the interface between the upper SiCN film and the SiO film. Film peeling
- the adhesion strength of the wafer that did not cause peeling was further measured by the 4-point pending method, and the value was 2.1 to 2.5 jZm2.
- Fluorine-added carbon films are known to be effective as interlayer insulating films as described in “Background Art”, but it is considered extremely difficult to produce fluorine-added carbon films with good film quality. Therefore, grasping such an indicator of the amount of water in the trace water region is a major step toward the realization of a fluorine-added carbon film, and therefore the present invention is extremely effective.
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Abstract
Description
Claims
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
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EP05780931A EP1786029A4 (en) | 2004-08-25 | 2005-08-25 | PROCESS FOR FORMING PLASMA FILM AND IDOINE APPARATUS |
US11/660,649 US20070259131A1 (en) | 2004-08-25 | 2006-08-25 | Plasma-Assisted Deposition Method and System for Carrying Out the Same |
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JP2004245700 | 2004-08-25 | ||
JP2004-245700 | 2004-08-25 | ||
JP2005-225717 | 2005-08-03 | ||
JP2005225717A JP4843274B2 (ja) | 2004-08-25 | 2005-08-03 | プラズマ成膜方法 |
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US (1) | US20070259131A1 (ja) |
EP (1) | EP1786029A4 (ja) |
JP (1) | JP4843274B2 (ja) |
KR (3) | KR100944557B1 (ja) |
WO (1) | WO2006022319A1 (ja) |
Cited By (1)
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WO2007138841A1 (ja) * | 2006-05-25 | 2007-12-06 | Tokyo Electron Limited | 成膜方法、成膜装置及び記憶媒体、並びに半導体装置 |
Families Citing this family (6)
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JP3384795B2 (ja) * | 1999-05-26 | 2003-03-10 | 忠弘 大見 | プラズマプロセス装置 |
JP2006135303A (ja) * | 2004-10-05 | 2006-05-25 | Tokyo Electron Ltd | プラズマ成膜方法及びプラズマ成膜装置、並びにプラズマ成膜装置に用いられる記憶媒体 |
JP5261964B2 (ja) * | 2007-04-10 | 2013-08-14 | 東京エレクトロン株式会社 | 半導体装置の製造方法 |
US8021975B2 (en) | 2007-07-24 | 2011-09-20 | Tokyo Electron Limited | Plasma processing method for forming a film and an electronic component manufactured by the method |
WO2012026286A1 (ja) * | 2010-08-27 | 2012-03-01 | 東京エレクトロン株式会社 | エッチング方法、基板処理方法、パターン形成方法、半導体素子の製造方法、および半導体素子 |
CN104209009A (zh) * | 2014-08-26 | 2014-12-17 | 东华大学 | 基于界面交联改善疏水微孔膜抗污性能的方法 |
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JPS6088425A (ja) * | 1983-10-20 | 1985-05-18 | Ricoh Co Ltd | 気相薄膜形成方法 |
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FR2733319B1 (fr) * | 1995-04-21 | 1997-05-23 | Air Liquide | Procede et dispositif d'analyse de traces d'impuretes dans un echantillon de gaz au moyen d'une diode laser |
US6059859A (en) * | 1997-09-19 | 2000-05-09 | Aeronex, Inc. | Method, composition and apparatus for water removal from non-corrosive gas streams |
JP4492764B2 (ja) * | 1999-05-24 | 2010-06-30 | 日本ゼオン株式会社 | プラズマ反応用ガス及びその製造方法 |
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US6824589B2 (en) * | 2001-10-31 | 2004-11-30 | Matheson Tri-Gas | Materials and methods for the purification of inert, nonreactive, and reactive gases |
US6865243B2 (en) * | 2002-10-25 | 2005-03-08 | General Electric Company | Method of detecting cracks in jet pump beams of a nuclear reactor |
US7314506B2 (en) * | 2004-10-25 | 2008-01-01 | Matheson Tri-Gas, Inc. | Fluid purification system with low temperature purifier |
-
2005
- 2005-08-03 JP JP2005225717A patent/JP4843274B2/ja not_active Expired - Fee Related
- 2005-08-25 KR KR1020087029165A patent/KR100944557B1/ko not_active IP Right Cessation
- 2005-08-25 WO PCT/JP2005/015407 patent/WO2006022319A1/ja active Application Filing
- 2005-08-25 KR KR1020077006711A patent/KR20070064330A/ko active Application Filing
- 2005-08-25 EP EP05780931A patent/EP1786029A4/en not_active Withdrawn
- 2005-08-25 KR KR1020087016250A patent/KR100922448B1/ko not_active IP Right Cessation
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2006
- 2006-08-25 US US11/660,649 patent/US20070259131A1/en not_active Abandoned
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JPH10338506A (ja) * | 1997-06-05 | 1998-12-22 | Nec Corp | オゾン流量制御装置 |
WO1999028963A1 (fr) * | 1997-11-28 | 1999-06-10 | Nippon Zeon Co., Ltd. | Procede de formation d'un film isolant |
JP2001135633A (ja) * | 1999-11-10 | 2001-05-18 | Matsushita Electronics Industry Corp | 半導体装置の製造方法 |
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Also Published As
Publication number | Publication date |
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US20070259131A1 (en) | 2007-11-08 |
KR100922448B1 (ko) | 2009-10-21 |
EP1786029A1 (en) | 2007-05-16 |
KR20080108370A (ko) | 2008-12-12 |
KR100944557B1 (ko) | 2010-02-25 |
KR20080066096A (ko) | 2008-07-15 |
JP2006093664A (ja) | 2006-04-06 |
EP1786029A4 (en) | 2009-01-07 |
KR20070064330A (ko) | 2007-06-20 |
JP4843274B2 (ja) | 2011-12-21 |
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