WO2004055234A1 - 成膜方法 - Google Patents
成膜方法 Download PDFInfo
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- WO2004055234A1 WO2004055234A1 PCT/JP2003/016190 JP0316190W WO2004055234A1 WO 2004055234 A1 WO2004055234 A1 WO 2004055234A1 JP 0316190 W JP0316190 W JP 0316190W WO 2004055234 A1 WO2004055234 A1 WO 2004055234A1
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- Prior art keywords
- substrate
- gas
- film
- film forming
- processed
- Prior art date
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- 238000000034 method Methods 0.000 title claims abstract description 60
- 239000000758 substrate Substances 0.000 claims abstract description 247
- 238000012545 processing Methods 0.000 claims abstract description 164
- 238000000151 deposition Methods 0.000 claims abstract description 90
- 230000008021 deposition Effects 0.000 claims abstract description 73
- 239000002184 metal Substances 0.000 claims abstract description 43
- 229910052751 metal Inorganic materials 0.000 claims abstract description 43
- 239000002994 raw material Substances 0.000 claims abstract description 23
- 150000001728 carbonyl compounds Chemical class 0.000 claims abstract description 9
- 239000007789 gas Substances 0.000 claims description 118
- 239000011261 inert gas Substances 0.000 claims description 18
- MNWRORMXBIWXCI-UHFFFAOYSA-N tetrakis(dimethylamido)titanium Chemical compound CN(C)[Ti](N(C)C)(N(C)C)N(C)C MNWRORMXBIWXCI-UHFFFAOYSA-N 0.000 claims description 10
- ZOXJGFHDIHLPTG-UHFFFAOYSA-N Boron Chemical compound [B] ZOXJGFHDIHLPTG-UHFFFAOYSA-N 0.000 claims description 8
- 229910052796 boron Inorganic materials 0.000 claims description 8
- 125000002524 organometallic group Chemical group 0.000 claims description 8
- -1 carbonate compound Chemical class 0.000 claims description 7
- 150000001639 boron compounds Chemical class 0.000 claims description 4
- 230000005284 excitation Effects 0.000 claims description 3
- 150000002736 metal compounds Chemical class 0.000 claims description 2
- 238000011534 incubation Methods 0.000 abstract description 34
- 238000005229 chemical vapour deposition Methods 0.000 abstract description 29
- 230000015572 biosynthetic process Effects 0.000 abstract description 12
- 125000002915 carbonyl group Chemical group [*:2]C([*:1])=O 0.000 abstract description 3
- 239000000463 material Substances 0.000 abstract description 3
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 80
- 229910052814 silicon oxide Inorganic materials 0.000 description 80
- 238000012360 testing method Methods 0.000 description 28
- 230000000694 effects Effects 0.000 description 26
- 239000012159 carrier gas Substances 0.000 description 15
- 238000010586 diagram Methods 0.000 description 14
- 238000002230 thermal chemical vapour deposition Methods 0.000 description 13
- 238000003672 processing method Methods 0.000 description 12
- 238000009940 knitting Methods 0.000 description 11
- 238000007781 pre-processing Methods 0.000 description 11
- 239000000835 fiber Substances 0.000 description 7
- 238000009832 plasma treatment Methods 0.000 description 7
- 238000004904 shortening Methods 0.000 description 5
- 238000010998 test method Methods 0.000 description 5
- 229910004298 SiO 2 Inorganic materials 0.000 description 4
- 238000004519 manufacturing process Methods 0.000 description 4
- 229910052757 nitrogen Inorganic materials 0.000 description 4
- 239000004065 semiconductor Substances 0.000 description 4
- 238000011109 contamination Methods 0.000 description 3
- 239000002390 adhesive tape Substances 0.000 description 2
- 238000011156 evaluation Methods 0.000 description 2
- 230000005281 excited state Effects 0.000 description 2
- 238000002474 experimental method Methods 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 150000002500 ions Chemical class 0.000 description 2
- 238000003475 lamination Methods 0.000 description 2
- IJGRMHOSHXDMSA-UHFFFAOYSA-N nitrogen Substances N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 2
- 230000006911 nucleation Effects 0.000 description 2
- 238000010899 nucleation Methods 0.000 description 2
- 238000010926 purge Methods 0.000 description 2
- 150000003254 radicals Chemical class 0.000 description 2
- 229910052710 silicon Inorganic materials 0.000 description 2
- 239000010703 silicon Substances 0.000 description 2
- 230000006641 stabilisation Effects 0.000 description 2
- 238000011105 stabilization Methods 0.000 description 2
- 241000237518 Arion Species 0.000 description 1
- 241000233855 Orchidaceae Species 0.000 description 1
- 101150107341 RERE gene Proteins 0.000 description 1
- 229910018557 Si O Inorganic materials 0.000 description 1
- 230000005587 bubbling Effects 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000005137 deposition process Methods 0.000 description 1
- 229910003460 diamond Inorganic materials 0.000 description 1
- 239000010432 diamond Substances 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 description 1
- 239000010931 gold Substances 0.000 description 1
- 229910052737 gold Inorganic materials 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 150000002831 nitrogen free-radicals Chemical class 0.000 description 1
- 238000002203 pretreatment Methods 0.000 description 1
- 238000012958 reprocessing Methods 0.000 description 1
- 230000000717 retained effect Effects 0.000 description 1
- 238000006748 scratching Methods 0.000 description 1
- 230000002393 scratching effect Effects 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- LIVNPJMFVYWSIS-UHFFFAOYSA-N silicon monoxide Inorganic materials [Si-]#[O+] LIVNPJMFVYWSIS-UHFFFAOYSA-N 0.000 description 1
- 239000011343 solid material Substances 0.000 description 1
Classifications
-
- 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
- C23C16/455—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 characterised by the method used for introducing gases into reaction chamber or for modifying gas flows in reaction chamber
-
- 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
- C23C16/06—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 metallic material
- C23C16/16—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 metallic material from metal carbonyl compounds
-
- 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
- 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
Definitions
- the present invention generally relates to the manufacture of semiconductor devices, and more particularly to a method of forming a metal film by a CVD method using a metal carboel raw material.
- CVD chemical vapor deposition
- Deposition of a W film by the thermal CVD method conventionally are conventionally uses raw materials such as WF 6 or WC 1 6, which of H 2 and S i H 4, or have been carried out by reduction with NH 3
- these methods have a problem that it is difficult to deposit a W film on an insulating film such as a SiO 2 film.
- the deposition of a W film by CVD using W (CO) 6 as a raw material typically involves a temperature range of about 500 ° C under a pressure of about 7 Pa (0.5 Torr) or less.
- the W film deposition occurs immediately on the SiO 2 film as soon as the deposition starts, and a high-quality W film can be efficiently produced, that is, high throughput. It is possible to form a film.
- Patent Document 1 JP-A-10-135452
- FIG. 1 shows the results of an experiment conducted by the inventor of the present invention when a W film was deposited at a low substrate temperature of 500 ° C. or less using W (CO) 6 as a gaseous source material in an experimental study.
- FIG. 4 shows the relationship between the deposition time and the W of the W film formed, found. However, in the experiment in Fig. 1, the deposition of the W film was 413 under a pressure of about 8 Pa (0.06 Torr).
- W (CO) 6 is supplied from a raw material container maintained at 25 ° C. to the reaction container together with Ar gas at a flow rate of 50 SCCM by publishing.
- the deposition of the W film on the substrate does not occur immediately after the start of the deposition, but only after an incubation time of about 300 seconds, that is, about 5 minutes. After the elapse of the incubation time, the thickness of the W film increases linearly with the deposition time.
- Fig. 1 shows that even at such a low temperature, a W film can be formed accurately on the SiO 2 film by controlling the deposition time.
- the presence of the cavitation time naturally lowers the throughput of the W film deposition process.
- a wait time corresponding to the incubation time occurs for each substrate, which causes a serious decrease in throughput in the entire semiconductor device manufacturing process. Invite you.
- This incubation time can be further increased by further reducing the substrate temperature during deposition, and can be as long as 600 seconds or more.
- the ⁇ W film is heated at a substrate temperature of 338 ° C, a pressure of 0.1 Torr, a bubble temperature of 30 ° C, and a gas phase containing W (CO) 6 by a thermal ⁇ reaction of W (CO) 6.
- the deposition rate itself may be about 6.6 nm per minute, but the incubation time may exceed 618 seconds, or 10 minutes. It has been found by the inventor of the invention. Disclosure of the invention
- the present invention provides a new and useful film forming method which solves the above problem. Is a general rule.
- a reactive gas is introduced into a space near a surface to be processed, so that a The purpose of this method is to reduce the incubation time and improve the efficiency of substrate processing.
- the present invention is directed to a method for forming a metal film using a metal carbonyl compound as a raw material, the method comprising: a first step of introducing a reactive gas into a space near a surface of a substrate to be processed; After the step, a second step of introducing a gaseous raw material containing the metal compound into the space on the surface to be processed, and depositing a metal film on the surface of the substrate to be processed.
- a film forming method characterized in that the step is performed so that substantial deposition of the metal film does not occur on the transparent plate.
- a reactive gas is introduced into a space near a surface to be processed, thereby reducing an incubation time during film formation.
- FIG. 1 is a diagram showing the relationship between the thickness of a W film and the deposition time when a W film is directly deposited on an insulating film by a CVD method.
- FIG. 2 is a diagram showing the processing time of the present invention and the conventional example.
- FIG. 3 is a diagram showing a configuration of a CVD apparatus that performs substrate processing according to the present invention.
- FIG. 4 is a diagram (part 1) illustrating a configuration of a substrate processing apparatus that performs substrate processing according to the present invention.
- FIG. 5 is a diagram (part 1) illustrating the substrate processing method according to the present invention.
- FIG. 6 is a diagram (part 1) showing a tape test method as an adhesion test.
- FIG. 7 is a diagram (part 2) showing a tape test method as an adhesion test.
- FIG. 8 is a diagram (part 2) illustrating a configuration of a substrate processing apparatus that performs processing according to the present invention.
- FIG. 9 is a diagram (part 3) illustrating a configuration of a processing unit that performs a processing according to the present invention.
- FIG. 10 is a diagram (part 2) illustrating the substrate processing method according to the present invention.
- FIG. 11 is a diagram (part 4) illustrating a configuration of a substrate processing apparatus that performs substrate processing according to the present invention.
- FIG. 12 is a view (No. 5) showing a configuration of a substrate processing apparatus for performing substrate processing according to the present invention.
- FIG. 13 is a diagram (part 3) illustrating the substrate processing method according to the present invention.
- FIG. 14 is a diagram (part 6) illustrating the configuration of a processing apparatus that performs substrate processing according to the present invention.
- FIG. 2 shows the substrate processing times of the conventional example and the present invention.
- the substrate processing time includes a film forming time 1 and an incubation time 2.
- the substrate processing time in the present invention includes a film forming time 1 and a pre-processing time 3.
- the substrate pretreatment is performed before the deposition of the W film is started, thereby shortening the incubation time, fibering the substrate treatment time, and improving the productivity.
- FIG. 3 shows a configuration of the CVD apparatus 10 used in the first embodiment of the present invention.
- the CVD apparatus 1 ⁇ includes a processing vessel 11 evacuated by a turbo molecular pump (TMP) 12 and a dry pump (DP) 13. ⁇ A fiber holding table 11 A holding W f is provided. Said A heater 11a is buried in the substrate holding table 11A, and has a structure capable of heating an object S3 ⁇ 4 «Wf to a desired temperature.
- TMP turbo molecular pump
- DP dry pump
- a shower head 11 B for introducing a processing gas is provided on the processing vessel 11, and a bubbler for holding W (CO) 6 which is a solid material is provided on the shower head 11 B.
- the W (CO) 6 together with a carrier gas such as Ar is used as a gas-phase raw material in the form of a valve 14 A, a line 14 B, and a valve 14 C provided in the knitting line 14 B.
- a carrier gas such as Ar
- the W (CO) 6 thus supplied is supplied from the shower head 11 B to the processing vessel 11 as shown by an arrow in the figure, and undergoes a thermal reaction on the surface to be processed.
- a W film is deposited on the insulating film formed on the surface of the substrate f.
- a gas line 14D provided with a valve 14d is connected to the complaining share head 11B.
- the gas line 1 4 D is connected to a gas supply source (not shown),
- a r is an inert gas
- H e such as N 2 is supplied unpleasant himself processing vessel 1 1 be filled with an inert gas It is possible, and if necessary, the pressure in the ttff self-processing container 11 can be adjusted using the inert gas.
- the CVD apparatus 10 shown in FIG. 3 is provided with a bypass line 13B for connecting the line 14B to a dry pump via a valve 13A.
- the valve 13 A is closed in a normal film forming step, but when, for example, a carrier gas containing a raw material is flowed out of the processing container 11 before film formation to stabilize the flow rate, It is opened to purge the container 11 and at the same time the valve 14 C is closed.
- the gas-phase raw material formed by the self-bubble 14 is directly discharged to the dry pump 13. This makes it possible to maintain the state of the bubbler 14 constant during the deposition step, during the flow stabilization operation, and during the purge step.
- FIG. 4 shows a fiber processing device 20 which is an example of a substrate processing device for performing the substrate pretreatment.
- the substrate processing apparatus 20 includes a processing container 21 which is evacuated by a dry pump (DP) 23, and holds the substrate Wf in the processing container 21.
- a substrate holding table 21 A is provided.
- a heater 21a is embedded in the substrate holder 21A, and has a structure capable of heating the substrate to be processed Wf to a desired temperature.
- a shower head 21 B for introducing a processing gas is provided on the processing vessel 21, and a line 25 provided with a valve 26 is connected to the shower head 21 B, The gas required for the pretreatment is supplied.
- a fiber pretreatment is performed in the disgusting substrate processing apparatus 20, and then a W film is deposited in the CVD apparatus 10.
- the target 3 ⁇ 4KW f is reduced under reduced pressure.
- a cluster tool (not shown).
- Step 101 (indicated as S 101 in the figure, the same applies hereinafter) to Step 106.
- the substrate wf having a silicon oxide film formed on the surface thereof in step 101 is placed on the substrate holder 21A of the substrate processing device 20 and the heater is mounted on the substrate holder 21A by the heater.
- the temperature of ⁇ W f is maintained at 380 ° C, and substrate processing starts.
- step 102 the valve 26 of the substrate processing apparatus 20 is opened to open an organic Ti gas as a substrate pretreatment gas, for example, TDEAT (T i [N (C 2 H 5 ) 2 ] 4 ) Is introduced together with diluted Ar gas at 30 sccm, and in step 103, the substrate is pretreated by maintaining the pressure at 1 Torr for 60 seconds.
- TDEAT T i [N (C 2 H 5 ) 2 ] 4
- the substrate is pretreated by maintaining the pressure at 1 Torr for 60 seconds.
- the TDEAT is adsorbed on the surface of the silicon oxide film.M ⁇ A nucleus is formed when the W film is formed in the next step. This has the effect of facilitating the deposition of the W film.
- the target 3 ⁇ 43 ⁇ 4W f is transported to the disgusting CVD apparatus 10, placed on the holding table 11 A, and f! Ft
- the self-treatment 3 ⁇ 4W f is kept at 415 ° C.
- step 104 the mass flow controller 15 is controlled by the system controller 16 and 40.
- Ar carrier gas is supplied at a flow rate of 300 S CCM to the touch pabler 14 maintained at a temperature of C.
- step 05 a W film is grown on the above-mentioned Wf at a film formation rate of 3.2 nm / min so as to cover the silicon oxide film.
- the substrate processing is completed in step 106.
- a nucleus containing Ti is formed as described above, and the W Since the deposition of the film occurs, the above-mentioned incubation time is eliminated, the deposition of the W film is started at the same time as the supply of W (CO) 6 , the reprocessing time is shortened, and the productivity is improved.
- the adhesion between the silicon oxide film and the W film to be formed is improved. The adhesion test is performed by the tape test method shown in FIGS. 6 and 7 below.
- FIG. 6 shows a test portion Wf1 of the substrate to be processed Wf on which the W film is formed.
- FIG. 7 is an enlarged view of the test section Wf1.
- 10 horizontal cutout lines indicated by X are drawn in FIG.
- the disgusting cutout line is obtained by scratching the W film using, for example, a scribe # diamond cutter.
- 10 notch lines ⁇ are drawn in the vertical direction so as to be orthogonal to the notch line X, 100 test pieces indicated by ⁇ are formed.
- An adhesive tape is applied to the area including the tiff self test piece XY100, and a test for peeling is performed.
- the test piece XY made of a W film is adhered to the adhesive tape side and the substrate to be processed is processed.
- the adhesion of the W film is evaluated based on the number of the films separated from the silicon oxide film. Such close contact
- the raw evaluation method is sometimes called the tape test method.
- this embodiment using the TD EAT organic T i gas (T i [N (C 2 H 5) 2] 4), is not limited to the gas, for example, TDMAT (T i [N A similar effect can be obtained by using (CH 3 ) 2] 4).
- a boron compound gas can be used in addition to the organic Ti gas. Since the gas of the boron-bonded product is easy to form a nucleus serving as a starting point of deposition during WJIIit product and has a low specific resistance even if it remains in the film, it is useful as a substrate pretreatment gas. is there.
- a gas containing boron such as BF 3 , B 2 H 6 , B (C 2 H 5 ) 3 or a gaseous raw material containing boron is used instead of the organic Ti gas, The same result as ⁇ using i gas can be obtained.
- An organic Ti gas containing boron may be used as the substrate pretreatment gas.
- the substrate processing method shown in FIG. 5 enables the pre-processing and the deposition of the W film to be continuously performed in the substrate processing apparatus 10 A shown in FIG.
- FIG. 8 shows a substrate processing apparatus 1OA capable of continuously performing the substrate pretreatment and the W film deposition shown in FIG.
- the same parts as those described above are denoted by the same reference numerals, and description thereof will be omitted.
- the substrate processing apparatus 1OA is obtained by connecting a line 17 provided with a valve 17A to a shear head 11B of the CVD apparatus 10.
- the line 17 is connected to a gas supply source (not shown), and supplies gas required for substrate pretreatment to the substrate processing unit 3 O A through the shower head 11 B.
- the processing target Wf having a silicon oxide film formed on the surface thereof in step 101 is placed on the holding table 11A of the substrate processing apparatus 1OA, and the heater is used to set the temperature of the processing target S3 ⁇ 4Wf. Is maintained at 380 ° C and the process starts.
- the valve 17A of the substrate processing apparatus 1OA was opened.
- An organic Ti gas used for substrate pretreatment for example, TDEAT (Ti [N (C 2 H 5 ) 2 ] 4 ) is introduced together with 30 sccm and «Ar gas, and a pressure of 1 T Hold for 60 seconds in orr to perform preprocessing.
- the Ti easily reacts with the silicon oxide film as an underlayer, the TDEAT reaches the surface of the silicon oxide film, and the nucleus is formed at the time of forming the W film in the next step. Is formed to facilitate the deposition of the W film. Also, Ti reacts with the silicon oxide film, which leads to an improvement in adhesion, and also has a low resistance value, so that the specific resistance of the formed film can be kept low.
- the supply of the substrate pretreatment gas including the diluted Ar gas is stopped, the inside of the anaerobic treatment container 11 is evacuated, and the substrate 11 is treated by the heater 11a.
- S3 ⁇ 4W f is maintained at 415 ° C.
- step 104 the mass flow controller 15 is controlled by the system controller 16, and the Ar carrier gas is supplied to the bubbler 14 held at 40 ° C. at a flow rate of 300 SCCM. Supply by
- a supersaturated state of six W (CO) molecules is generated as in the case of the normal thermal CVD method, and step 105
- a W film is grown on the substrate f at a deposition rate of 3.2 nm / min so as to cover the silicon oxide film.
- step 106 After the deposition of the desired W film is completed, the process is completed in step 106.
- the W film thus formed has no incubation time and the supply of W (CO) 6 is performed in the same manner as in the first embodiment. At the same time, deposition of the W film is started, and good adhesion between the silicon oxide film and the W film to be formed is obtained. Also in the tape test, the processing target Wf and the silicon There was no test piece XY peeled off from the oxide film, and good adhesion was obtained.
- the same effect can be obtained by using, for example, TDMAT (T i [N (CH 3 ) 2] 4 ) as the i gas as the substrate pretreatment gas.
- a boron compound gas is used in addition to the organic Ti gas.
- the tfft boron compound gas is useful as a substrate pretreatment gas because nuclei, which are the starting points of deposition, are easily formed during deposition, and the resistivity is low even if it remains in the film.
- a gas containing boron such as BF 3 , B 2 H 6 , B (C 2 H 5 ) 3 or a gaseous raw material containing boron is used instead of the organic Ti gas. It is possible to obtain the same result as when using. Further, an organic Ti gas containing boron may be used as the substrate pretreatment gas.
- FIG. 9 shows a substrate processing unit 30 as an example of a substrate processing unit for performing a substrate pretreatment.
- the same parts as those described above are denoted by the same reference numerals, and description thereof will be omitted.
- the substrate processing device 30 has a structure in which a high frequency application device 27 is connected to the short head 21 B of the processing device 20 so that high frequency can be applied. Has become.
- a shower head 21 B for introducing a processing gas is provided on the processing container 21, and a line 25 provided with a valve 26 is connected to the shower head 21 B.
- the structure to which the gas required for the substrate pretreatment is supplied is the same as that of the substrate processing unit 20.
- the substrate processing unit 30 has a structure that can apply gas required for substrate preprocessing, apply high frequency to the knitting head 21 B, excite plasma, and perform substrate preprocessing. It has become.
- a pre-working process is performed in the processing substrate 30 and then a W film is deposited in the CVD apparatus 10. It is transported under reduced pressure, and is transported in a vacuum using, for example, a cluster tool device (not shown).
- FIG. 10 shows a specific substrate processing method actually performed using the knitting substrate processing apparatus 30 and the CVD apparatus 10.
- the substrate processing shown in FIG. 10 includes Step 201 (indicated as S201 in the figure, the same applies hereinafter) to Step 206.
- the processing target S ⁇ ⁇ W having a silicon oxide film formed on the surface thereof in step 201 First, the processing target S ⁇ ⁇ W having a silicon oxide film formed on the surface thereof in step 201.
- the substrate f is placed on the holding table 21 A of the substrate processing unit 30, and the substrate ftW f is maintained at 395 ° C. by the knitting heater, and the substrate processing is started.
- the valve 26 of the substrate processing apparatus 30 is opened, and an inert gas used for substrate pretreatment, for example, Ar is introduced at 500 sccm.
- a high frequency is applied from the high frequency applying device to excite the plasma.
- the substrate is pretreated by holding the excited state of the plasma for 120 seconds.
- the part to be processed collides with the silicon oxide film formed on the surface of the Wi and a part of the Si-I O bond is cut off Occurs.
- a dangling bond of Si is formed at that portion, and the dangling bond serves as a starting point for depositing a W film later, thereby enabling an incubation time for depositing the W film.
- the adhesion between the W film and the silicon oxide film can be improved in order to strengthen the bond with Si.
- step 204 the mass flow controller 15 is controlled by the system controller 16, and the Ar carrier gas is supplied to the bubbler 14 held at 35 ° C. at a flow rate of 300 SCCM. Supply by
- a supersaturated state of W (CO) 6 molecules is generated as in the case of the normal thermal CVD method, and step 205 is performed.
- a W film is grown at a deposition rate of 2.4 nm / min so as to cover the silicon oxide film on the above-mentioned £ 3 ⁇ 4W f.
- the substrate processing is completed in step 206. Since the W film thus formed is formed on the silicon oxide film containing the dangling bond of Si as described above, the deposition of the W film occurs based on the dangling bond, as described above. As a result, the deposition time of the W film is started simultaneously with the supply of W (CO) 6 , and the processing time of the substrate is shortened, thereby improving the productivity. In addition, there is an effect that the adhesion between the silicon oxide film and the W film formed is improved. Even in the tape test, tfit self-treatment BKW f and tins silicon are used. There was no test piece XY peeled off from the oxide film, and good adhesion could be obtained.
- Ar as an inert gas for exciting plasma during substrate pretreatment, for example, N 2 , He H 2 , or a combination of these gases can be used.
- N 2 when N 2 is used, substrate processing can be performed according to the flow shown in FIG.
- the substrate to be treated 3 ⁇ 4W f having a silicon oxide film formed on the surface thereof in step 201, is placed on the fiber holding table 21 A of the substrate processing device 30, and the substrate to be treated is heated by the heater.
- the temperature of f is maintained at 400 ° C, and substrate processing starts.
- the high frequency is applied from the high frequency applying device to excite the plasma.
- the substrate is pre-treated while maintaining the excited state of the plasma for 60 seconds.
- the nitrogen ions generated by the plasma collide with the silicon oxide film formed on the surface of the processing target W f, and a part of the silicon oxide film is broken.
- a dangling pound of Si is formed at that portion, and the dangling bond serves as a starting point for depositing the W film later, thereby shortening the incubation time when depositing the W film.
- the adhesion between the W film and the silicon oxide film can be improved in order to strengthen the bond with Si.
- the substrate to be processed OTi is transported to the CVD device 10 and is placed on the knitting substrate holding table 11A, where it is heated by the heater 11a.
- the processed S3 ⁇ 4W f is kept at 420 ° C.
- step 204 the mass flow controller 15 is controlled by the system controller 16, and the Ar carrier gas is supplied to the publisher 14 held at 45 ° C. at a flow rate of 300 SCCM. Supply.
- a supersaturated state of six W (CO) molecules is generated as in the case of the normal thermal CVD method.
- a W film is formed on the 3 ⁇ 43 ⁇ 4W f so as to cover the silicon oxide film. Grow at a rate of 2.8 nm / min.
- the substrate processing is completed in step 206.
- the incubation time for the WHii product is eliminated, the deposition of the W film is started at the same time as the supply of W (CO) 6 , and the processing time is reduced, thereby improving the productivity.
- the adhesion between the silicon oxide film and the W film formed is improved, and in the tape test, there is no as-wf to be processed and no test piece ⁇ separated from the silicon oxide film. Good adhesion could be achieved.
- the anti-pretreatment gas for example, a mixture of Ar and N 2 shown above can be used, and the substrate treatment shown in FIG. 10 can be similarly performed.
- the substrate f on which a silicon oxide film has been formed on the surface in step 201, is placed on the inferior holding table 21A of the substrate processing unit 30, and the substrate is processed by the heater. ⁇ of W f is maintained at 390 ° C, and substrate processing starts.
- step 203 the inert gas used Te Contact Rere Step 2 0 2 in the open to group chef handling valve 2 6 of the substrate processing apparatus 3 0, for example, A r the 1 0 0 sccm, the N 2 5 0 sccm was introduced At a pressure of 0.15 Torr, in step 203, a high frequency is applied from the high frequency applying device to excite the plasma. The pre-treatment is performed for 90 seconds while the plasma is excited. In this case, nitrogen ions or Ar ions or nitrogen radicals or Ar radicals generated by the plasma collide with the silicon oxide film formed on the surface of the target to be processed, and a part of the Si—O bond is formed. There is a part where is cut.
- a dangling bond of Si is formed at that portion, and the dangling bond becomes a starting point for depositing the W film thereafter, and the incubation time for depositing the W film can be reduced.
- the adhesion between the w film and the silicon oxide film can be improved to strengthen the bond with si.
- step 204 the mass flow controller 15 is controlled by the system controller 16 and Ar carrier gas is supplied to the bubbler 14 held at 40 ° C. at a flow rate of 300 SCCM. Supply.
- the space near the silicon oxide film formed on the surface of the substrate In this case, a supersaturation state of six W (CO) molecules occurs as in the case of the normal thermal CVD method, and at step 205, the W film covers the silicon oxide film on the substrate Wf. It grows at a deposition rate of 2.6 nm / min.
- the substrate processing is completed in step 206.
- the incubation time for the lamination is eliminated, the deposition of the W film is started at the same time as the supply of W (CO) 6 , and the substrate processing time is reduced, thereby improving the productivity. Further, there is an effect that the adhesion between the silicon oxide film and the W film formed is improved. Also in the tape test, there is no test piece XY peeled off from the substrate Wf and the silicon oxide film. Good adhesiveness could be confirmed.
- a substrate processing method based on FIG. 10 using an organic metal gas plasma is described below.
- the processing target Wf having the silicon oxide film formed on the surface thereof in step 201 is placed on the male holding table 21A of the substrate processing base 30 and the processing target is processed by the heater. ⁇
- the separation of W f is maintained at 380 ° C, and substrate processing starts.
- step 202 the valve 26 of the substrate processing apparatus 30 is opened to release an organic metal gas used for substrate pretreatment, for example, TDMAT (T i [N (CH 3 ) 2 ] 4 ) gas. 0 sccm, introduced together with the gaseous Ar, at a pressure of 0.3 Tor, and excites the plasma by applying high frequency from the high frequency applying device in step 203. .
- the plasma is excited for 60 seconds to perform pretreatment. Since Ti easily reacts with the underlying silicon oxide film, the TDMAT is adsorbed on the surface of the silicon oxide film by f! Ft.M ⁇ A nucleus is formed at the time of W expansion performed in the next step. Has the effect of facilitating the deposition of the W film. Further, Ti reacts with the silicon oxide film, which leads to an improvement in adhesion, and the low resistance value allows the formed film to have a low specific resistance.
- TDMAT T i [N (CH 3 ) 2 ] 4
- the processing target Wf is transported to the CVD apparatus 10, and is placed on the holding table 11A, and is processed by the heater 11a.
- SSKW f is kept at 420 ° C.
- step 204 the mass flow controller 15 is controlled by the system controller 16, and Ar carrier gas is supplied to the volume 3 bubbler 14 held at 45 ° C. at a flow rate of 300 SCCM. Supply by
- step 5 the orchid is grown on the substrate Wf at a deposition rate of 3.3 nm / min so as to cover the silicon oxide film.
- the substrate processing is completed in step 206.
- a nucleus containing Ti is formed as described above, and the deposition of the W film occurs from the nucleus as a starting point.Therefore, the above-mentioned incubation time is eliminated, and W (CO ) The deposition of the W film starts simultaneously with the supply of 6 , which reduces the substrate processing time and improves productivity.
- the formation of the nuclei has an effect of improving the adhesion between the silicon oxide film and the W film to be formed. Even in the tape test, the substrate to be processed 3 ⁇ 4Wf and the silicon oxide There was no knitting test piece XY peeled off from the film, and good adhesion was obtained.
- TDMAT T i “N (C H 3 ) 2] 4
- TDEAT T i [N (C 2 H 5 ) 2] 4
- organic Ti gas It is possible, and the same effect as that of the present embodiment can be obtained.
- the substrate pretreatment and the film deposition are continuously performed in the substrate processing apparatus 10 shown in FIG. 11 below. Things are possible.
- FIG. 11 shows a substrate processing apparatus 10 # capable of continuously performing the pretreatment and film deposition shown in FIG.
- the parts described above are denoted by the same reference numerals, and description thereof will be omitted.
- the substrate processing device 3 is provided with a high frequency application device 18 connected to a shower head 11B of the substrate processing device 1 OA.
- the line 17 is connected to a gas supply source (not shown), and supplies a gas required for substrate pretreatment to the substrate processing unit 10B and the shower head 11B. Same as OA.
- the processing target ⁇ W f having the silicon oxide film formed on the surface thereof in step 201 is placed on the opposite holding table 11A of the fiber processing device 10B, and the temperature of the processing target 3 ⁇ 43 ⁇ 4W f is set to 395 by the heater. ° C and substrate processing starts.
- step 202 the pulp 17A of the substrate processing apparatus 10B is opened, and an inert gas used for substrate pretreatment, for example, Ar is introduced at 500 sccm.
- Ar is introduced at 500 sccm.
- step 203 high frequency is applied from the high frequency applying device to excite plasma.
- the substrate is pretreated by holding the plasma excited for 120 seconds.
- the Ar + (Ar ion) 1S generated by the plasma collides with the silicon oxide film formed on the surface of the target to be processed 3 ⁇ 4Wf, and a part of the Si_o bond is broken. A dangling bond of Si is formed at that portion, and the dangling bond serves as a starting point for depositing the W film thereafter, thereby enabling an incubation time for depositing the W film.
- the adhesion between the w film and the silicon oxide film can be improved in order to strengthen the bond with Si.
- the supply of the substrate pre-processing gas Ar is stopped, the inside of the knitting processing container 11 is evacuated, and the heater 11 a is used to reduce the processing target 3 ⁇ 43 ⁇ 4W i. It is kept at 4 15 ° C.
- step 204 the mass flow controller 15 is controlled by the system controller 16, and Ar carrier gas is supplied to the ffrf self-bubble 14 held at 25 ° at a flow rate of 300 SCCM. Supply.
- a supersaturated state of six W (CO) molecules occurs as in the case of the normal thermal CVD method.
- a W film is grown on the substrate f at a film formation rate of 2.4 nm / min so as to cover the silicon oxide film.
- the substrate processing is completed in step 206.
- the substrate processing is completed in step 206.
- an inert gas other than A r as a substrate pretreatment gas, H e, N 2, X e, K r, or H 2 and Is possible.
- organometallic gas such as organic T i Gasudea Ru TD EAT (T i [N ( C 2 H 5) 2] 4), TDMAT (T i [ ⁇ (CH 3) 2] 4)
- a gas of a metal carbonyl compound for example, W (CO) 6 , Co (CO) 6, Mo (CO) 6, [R h (CO) 4 ] 4.
- W (CO) 6 Co (CO) 6, Mo (CO) 6, [R h (CO) 4 ] 4
- the effect of shortening the incubation time and improving the adhesion can be obtained.
- a W film is deposited using W (CO) 6.
- the same effect can be obtained by using W (CO) 6 itself and performing plasma treatment before starting the deposition of the w film.
- FIG. 12 shows a processing unit 40 as an example of a substrate processing unit 3 for performing a substrate pretreatment.
- the same parts as those described above are denoted by the same reference numerals, and description thereof will be omitted.
- the disgusting substrate processing apparatus 40 makes a line 28 with pulp 29 attached to the shear head 21 B of the substrate processing apparatus 20, and furthermore, In 28 is connected to a remote plasma source 30.
- the remote plasma generation source 30 is supplied with a gas supplied from a substrate pretreatment gas supply source (not shown) connected to the line 28, and is applied with a high frequency, so that the inside of the remote plasma generation source 30 is formed. Then, the plasma is excited to supply the radical generated from the substrate pretreatment gas into the processing vessel 21 from the line 28 via the disgusting showerhead 21B.
- FIG. 13 a specific substrate processing method using the substrate processing apparatus 40 and the CVD apparatus 10 is shown in FIG. 13 below.
- the processing target ⁇ W f having a silicon oxide film formed on the surface thereof in step 301, is placed on the substrate holding table 21A of the substrate processing unit 40, and the above-described processing target!
- the temperature of KWi is maintained at 385 ° C, and substrate processing starts.
- the valve 29 of the line 28 is opened, and a substrate pretreatment gas, for example, Xe is supplied to the substrate through the remote plasma generation source 30, for example, 500 sccm.
- the plasma is excited by the remote plasma generation source 30 and the plasma-excited Xe is supplied to the processing vessel 21, and the pressure inside the processing vessel 21 becomes 0.5 Torr.
- step 303 the state in which the plasma-excited Xe is supplied is held for 60 seconds to perform the substrate pretreatment.
- the plasma-excited Xe can remove contamination and the like of the silicon oxide film formed on the surface of the substrate to be processed Wi, thereby increasing the incubation time when depositing the W film. Also, improve the adhesion between the W film and the silicon oxide film to strengthen the bond with Si. be able to.
- the substrate to be processed ⁇ f is transferred to the CVD device 10 and is placed on the knitting holding table 11A to be heated by the heater 11a.
- the substrate to be treated Wf is maintained at 412 ° C.
- step 304 the mass flow controller 15 is controlled by the system controller 16 and the Ar carrier gas is supplied to the knitting pub 14 held at 40 ° C. at a flow rate of 300 SCCM. Supply by
- a supersaturated state of W (CO) 6 molecules occurs as in the case of the normal thermal CVD method, and the step 3 05 Further, a W film is grown on the substrate at a deposition rate of 2.7 nm / min so as to cover the silicon oxide film.
- the substrate processing is completed in step 306.
- the incubation time for Wii product is eliminated, the deposition of the W film is started at the same time as the supply of W (CO) 6 , and the substrate processing time is woven to improve the productivity.
- the adhesion between the silicon oxide film and the W film formed is improved, and in the tape test, the tiff self-treatment 3 ⁇ 4wf and the test piece XY peeled off from the silicon oxide film are No good adhesion could be confirmed.
- the substrate to be processed Wf having a silicon oxide film formed on the surface thereof in step 301 is placed on the substrate holder 21A of the substrate processing unit 40, and the substrate is processed by the heater.
- the substrate of £ ⁇ ⁇ ⁇ ⁇ W f is kept at 390 ° C and substrate processing starts.
- the vanoleb 29 of the line 28 is opened, and for example, H 2 , which is a substrate pretreatment gas, is supplied at 500 sccm through the remote plasma generation source 30.
- the plasma is excited by the Shuki remote plasma generation source 30, and the substrate pretreatment gas is plasma-excited and supplied to the processing vessel 21.
- the pressure inside the processing vessel becomes 0.5 Torr.
- step 303 the state where the plasma-excited H 2 is supplied Hold for 60 seconds to perform substrate pretreatment.
- the plasma-excited H 2 removes organic contamination and the like of the silicon oxide film formed on the surface of the processing target W f and can increase the incubation time when depositing the W film. .
- the adhesion between the W film and the silicon oxide film can be improved in order to strengthen the bond with Si.
- the substrate to be processed Wf is transported to the CVD apparatus 10 and is placed on the return substrate holding table 11A, where it is heated by the knitting heater 11a.
- the target 3 ⁇ 4W i is maintained at 420 ° C.
- step 304 the mass flow controller 15 is controlled by the system controller 16 and the Ar carrier gas is supplied to the tiff self-bubble 14 held at 40 ° C. at a flow rate of 300 SCCM. Supply by
- the substrate processing is completed in step 306.
- the incubation time for the 31 * i product is eliminated, the deposition of the W film is started at the same time as the supply of W (CO) 6 , and the substrate processing time is woven to increase the productivity. Is improved.
- the adhesion between the silicon oxide film and the W film formed is improved.
- the processing target; l3 ⁇ 4W f and the test piece XY peeled off from the silicon oxide film No good adhesion could be confirmed.
- the X e and H 2 indicated for real ⁇ when using the substrate pretreatment gas other rare gases, for example H e, A r, the N 2, K r using Similar results can be obtained.
- a plasma treatment using, for example, an organic metal gas is performed in the pretreatment in addition to the inert gas and H 2 .
- plasma treatment using organic metal gas is performed, plasma is printed.
- the organometallic gas is more efficiently adsorbed and nucleation, which is the base of W film deposition, is more likely to occur than in the case of no addition.
- step 301 the processing target having a silicon oxide film formed on the surface thereof is subjected to the above-mentioned “reverse processing S”.
- the substrate S is placed on the holding table 21A of the unit 40, and the temperature of the processing target S ⁇ W f is maintained at 39 ° C. by the knitting heater, and the substrate processing starts.
- step 302 the pulp 29 of the line 28 is opened, and an organometallic gas which is a substrate pretreatment gas, for example, 500 sccm of Mo (CO) 6 and Ar which is a carrier gas are tiffened. Supply via self-remote plasma source 30. At that time, plasma is excited by the distasteful remote plasma generation source 30, and the pretreatment gas, Mo (CO) 6, is plasma-excited, and the S ⁇ ⁇ pretreatment gas is supplied to the distasteful treatment vessel 21, and the processing volume The pressure inside the vessel becomes 0.8 Torr.
- an organometallic gas which is a substrate pretreatment gas, for example, 500 sccm of Mo (CO) 6 and Ar which is a carrier gas are tiffened. Supply via self-remote plasma source 30. At that time, plasma is excited by the distasteful remote plasma generation source 30, and the pretreatment gas, Mo (CO) 6, is plasma-excited, and the S ⁇ ⁇ pretreatment gas is supplied to the distasteful treatment vessel 21, and
- step 303 the substrate is pre-treated while holding the supply of Mo (CO) 6 with the plasma excited for 60 seconds.
- the plasma-excited Mo (CO) 6 is adsorbed on the surface of the t ff silicon oxide film, and nuclei are formed at the time of W ⁇ f formation in the next step, facilitating the deposition of the W film.
- it has the effect of improving the adhesion between the W film and the underlying silicon oxide film.
- the substrate to be processed ⁇ W i is conveyed to the CVD device 10 and is placed on the sickle holder 11A to be heated by the heater 11a.
- the group to be treated; IgWi is kept at 420 ° C.
- step 304 the mass flow controller 15 is controlled by the system controller 16, and the Ar carrier gas is supplied to the bubbler 14 maintained at a temperature of 45 ° C. at a flow rate of 300 SCCM. Supply by
- step 05 a W film is grown on the substrate Wf at a deposition rate of 3.4 nm / min so as to cover the silicon oxide film.
- the substrate processing is completed in step 306.
- the W film thus formed is deposited on the basis of a nucleus formed by Mo (CO) 6 reaching the surface of the silicon oxide film by P.
- the incubation time is eliminated, the deposition of the W film is started at the same time as the supply of W (CO) 6 , the processing time of the substrate is reduced, and the productivity is improved.
- the formation of the nuclei has an effect of improving the adhesion between the silicon oxide film and the W film to be formed, and the nucleus peeled off from the substrate to be processed Wf and the silicon oxide film even in a disgusting tape test. There was no test piece XY, and good adhesion could be obtained.
- Mo (CO) 6 was used as an example of the organometallic gas, but other examples of the carbonyl compound gas include, for example, W (CO) 6, Mo (CO) e, Co 2 (CO) 8, N i ( CO), Cr (CO) 6, V (CO) 6, Ru 3 (CO) i2, Rh 4 (CO) i2, Re 2 (CO) i 0, O s 3 (CO ) Even if i 2 , Mn 2 (CO) i 2 and I ⁇ 4 (CO) 12 were used, the effect of shortening the incubation time and improving the adhesion was the same as in this embodiment. Obtainable.
- TDEAT T i [N (C 2 H 5 ) 2 ] 4
- TDMAT T i [N (CH 3 ) 2] 4
- the substrate processing methods described in the eighth to tenth embodiments allow the substrate pretreatment and the deposition of the W film to be continuously performed in the CVD apparatus 10C shown in FIG.
- FIG. 14 shows a substrate processing apparatus 10C capable of continuously performing the substrate pretreatment and the W film deposition shown in FIG.
- the parts described above are denoted by the same reference numerals, and description thereof will be omitted.
- the substrate processing apparatus 10C is such that a remote plasma generation source 19 is installed in a gas line 17 of the substrate processing apparatus 8 and 10A.
- the remote plasma generation source excites the substrate pretreatment gas supplied to the line 17 from a gas supply source (not shown) with a high frequency, and introduces the gas into the processing vessel 11.
- a gas supply source not shown
- a specific example of performing the substrate processing method shown in FIG. 13 using the tfrf self-substrate processing apparatus 1 OC and the unpleasant CVD apparatus 10 will be described below.
- the processing target ⁇ W ⁇ having a silicon oxide film formed on the surface thereof in step 301 is placed on the substrate holding table 11A of the substrate processing blade 10C, and the heater determines the processing target ⁇ Wf>.
- the temperature is maintained at 385 ° C and processing starts.
- the valve 17A of the line 17 is opened, and a substrate pretreatment gas, for example, Xe is supplied at 500 sccm through the remote plasma generation source 19.
- a substrate pretreatment gas for example, Xe is supplied at 500 sccm through the remote plasma generation source 19.
- the plasma excited by the remote plasma generation source 19 and the plasma-excited Xe are supplied to the disgusting processing vessel 11, and the pressure inside the processing vessel 11 becomes 0.5Torr.
- step 303 the state in which Xe excited by the plasma is supplied is maintained for 60 seconds to perform the substrate pretreatment.
- plasma-excited Xe removes organic contamination etc. of the silicon oxide film formed on the surface of the substrate f to be treated, and shortens the incubation time when depositing the W film. can do .
- the adhesion between the W film and the silicon oxide film can be improved in order to strengthen the bond with Si.
- the supply of the substrate pre-processing gas Xe is stopped, the inside of the processing container 11 is evacuated, and the heater 11a reduces the temperature of the target Wi to 412 ° C. Will be retained.
- step 304 the mass flow controller 15 is controlled by the system controller 16 to supply Ar carrier gas to the bubbler 14 held at 40 ° C. at a flow rate of 300 SCM.
- a supersaturated state of six W (CO) molecules is generated as in the case of the normal thermal CVD method, and the process proceeds to step 305. Then, a W film is grown on the 3 ⁇ 43 ⁇ 4W f at a deposition rate of 2.7 nm / min so as to cover the silicon oxide film.
- the substrate processing is completed in step 306.
- the deposition of the W film is started simultaneously with the supply of W (CO) 6 , and the substrate processing time is reduced.
- Productivity there is an effect that the adhesion between the silicon oxide film and the W film formed is improved.
- TD EAT organometallic gases to the substrate pretreatment gas such as organic T i gas (T i [N (C 2 H 5) 2] 4), TDMAT (T i [N (CHg) 2] 4)
- a gas of a metal carbonyl compound such as W (CO) 6 , Mo (CO) 6, C 02 (CO) 8, Ni (CO) 4 , Cr (CO) 6 , V (CO) 6 , Ru 3 (CO) i2, Rl (CO) i2, Re 2 (CO) 10, Os 3 (CO) 12, Mn 2 (CO) 12, and Ir 4 (CO) i2
- the processing method for forming the W film using W (CO) 6 has been described above, but the present invention is not limited to the source gas and the film to be formed.
- the present invention is also applied to the formation or deviation of a V film, a Ru film, a Rh film, a Re film, an Os film, a Mn film, and an Ir film in the same manner as when forming the W film. It is possible to do.
- a reactive gas is introduced into a space near the surface of the substrate to be processed, thereby reducing the incubation time during the film formation. It is possible to improve the efficiency of substrate processing by reducing it, and further improve the adhesion between the formed metal film and the lower fiber.
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Abstract
Description
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AU2003289404A AU2003289404A1 (en) | 2002-12-18 | 2003-12-17 | Method for forming film |
US11/155,575 US7344754B2 (en) | 2002-12-18 | 2005-06-20 | Film formation method |
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JP2002367073A JP4031704B2 (ja) | 2002-12-18 | 2002-12-18 | 成膜方法 |
JP2002-367073 | 2002-12-18 |
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US11/155,575 Continuation US7344754B2 (en) | 2002-12-18 | 2005-06-20 | Film formation method |
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WO2004007797A1 (ja) * | 2002-07-10 | 2004-01-22 | Tokyo Electron Limited | 成膜装置 |
US20050069641A1 (en) * | 2003-09-30 | 2005-03-31 | Tokyo Electron Limited | Method for depositing metal layers using sequential flow deposition |
US20050221000A1 (en) * | 2004-03-31 | 2005-10-06 | Tokyo Electron Limited | Method of forming a metal layer |
US7279421B2 (en) * | 2004-11-23 | 2007-10-09 | Tokyo Electron Limited | Method and deposition system for increasing deposition rates of metal layers from metal-carbonyl precursors |
US7270848B2 (en) * | 2004-11-23 | 2007-09-18 | Tokyo Electron Limited | Method for increasing deposition rates of metal layers from metal-carbonyl precursors |
JP2008031541A (ja) * | 2006-07-31 | 2008-02-14 | Tokyo Electron Ltd | Cvd成膜方法およびcvd成膜装置 |
DE102009023381A1 (de) * | 2009-05-29 | 2010-12-02 | Grega, Samuel | Verfahren zur Herstellung von W-, Cr-, Mo-Schichten, deren Carbiden, Nitriden, Siliciden, mehrschichtigen Strukturen und Verbindungsstrukturen auf festen Substraten und Vorrichtung für deren Herstellung |
JP5925476B2 (ja) * | 2011-12-09 | 2016-05-25 | 株式会社アルバック | タングステン化合物膜の形成方法 |
US10023955B2 (en) * | 2012-08-31 | 2018-07-17 | Fei Company | Seed layer laser-induced deposition |
US20160064405A1 (en) * | 2014-08-29 | 2016-03-03 | Kabushiki Kaisha Toshiba | Method for forming insulator film on metal film |
JP2019514207A (ja) * | 2016-03-31 | 2019-05-30 | エレクトロ サイエンティフィック インダストリーズ インコーポレーテッド | 導電めっきのためのレーザシーディング |
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JPS59209642A (ja) * | 1983-05-16 | 1984-11-28 | Nec Corp | 気相薄膜形成法 |
US6218301B1 (en) * | 2000-07-31 | 2001-04-17 | Applied Materials, Inc. | Deposition of tungsten films from W(CO)6 |
WO2002079537A2 (en) * | 2001-03-28 | 2002-10-10 | Applied Materials, Inc. | W-cvd with fluorine-free tungsten nucleation |
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GB9500330D0 (en) * | 1995-01-09 | 1995-03-01 | Pilkington Plc | Coatings on glass |
KR0167248B1 (ko) * | 1995-07-24 | 1999-02-01 | 문정환 | 반도체 기판의 전처리방법 |
US5856236A (en) * | 1996-06-14 | 1999-01-05 | Micron Technology, Inc. | Method of depositing a smooth conformal aluminum film on a refractory metal nitride layer |
US6025269A (en) * | 1996-10-15 | 2000-02-15 | Micron Technology, Inc. | Method for depositioning a substantially void-free aluminum film over a refractory metal nitride layer |
US5789312A (en) | 1996-10-30 | 1998-08-04 | International Business Machines Corporation | Method of fabricating mid-gap metal gates compatible with ultra-thin dielectrics |
US5906866A (en) * | 1997-02-10 | 1999-05-25 | Tokyo Electron Limited | Process for chemical vapor deposition of tungsten onto a titanium nitride substrate surface |
US6117772A (en) * | 1998-07-10 | 2000-09-12 | Ball Semiconductor, Inc. | Method and apparatus for blanket aluminum CVD on spherical integrated circuits |
US6095085A (en) * | 1998-08-20 | 2000-08-01 | Micron Technology, Inc. | Photo-assisted remote plasma apparatus and method |
US6445023B1 (en) * | 1999-03-16 | 2002-09-03 | Micron Technology, Inc. | Mixed metal nitride and boride barrier layers |
US6635965B1 (en) * | 2001-05-22 | 2003-10-21 | Novellus Systems, Inc. | Method for producing ultra-thin tungsten layers with improved step coverage |
TW589684B (en) | 2001-10-10 | 2004-06-01 | Applied Materials Inc | Method for depositing refractory metal layers employing sequential deposition techniques |
US6998014B2 (en) * | 2002-01-26 | 2006-02-14 | Applied Materials, Inc. | Apparatus and method for plasma assisted deposition |
US6905543B1 (en) * | 2002-06-19 | 2005-06-14 | Novellus Systems, Inc | Methods of forming tungsten nucleation layer |
-
2002
- 2002-12-18 JP JP2002367073A patent/JP4031704B2/ja not_active Expired - Fee Related
-
2003
- 2003-12-17 AU AU2003289404A patent/AU2003289404A1/en not_active Abandoned
- 2003-12-17 WO PCT/JP2003/016190 patent/WO2004055234A1/ja active Application Filing
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2005
- 2005-06-20 US US11/155,575 patent/US7344754B2/en not_active Expired - Lifetime
Patent Citations (3)
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JPS59209642A (ja) * | 1983-05-16 | 1984-11-28 | Nec Corp | 気相薄膜形成法 |
US6218301B1 (en) * | 2000-07-31 | 2001-04-17 | Applied Materials, Inc. | Deposition of tungsten films from W(CO)6 |
WO2002079537A2 (en) * | 2001-03-28 | 2002-10-10 | Applied Materials, Inc. | W-cvd with fluorine-free tungsten nucleation |
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JP4031704B2 (ja) | 2008-01-09 |
JP2004197163A (ja) | 2004-07-15 |
US20050233079A1 (en) | 2005-10-20 |
AU2003289404A1 (en) | 2004-07-09 |
US7344754B2 (en) | 2008-03-18 |
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