WO2019188128A1 - 半導体装置の製造方法、基板処理装置およびプログラム - Google Patents
半導体装置の製造方法、基板処理装置およびプログラム Download PDFInfo
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- WO2019188128A1 WO2019188128A1 PCT/JP2019/009380 JP2019009380W WO2019188128A1 WO 2019188128 A1 WO2019188128 A1 WO 2019188128A1 JP 2019009380 W JP2019009380 W JP 2019009380W WO 2019188128 A1 WO2019188128 A1 WO 2019188128A1
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- 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
- H01L21/28562—Selective deposition
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L21/00—Processes or apparatus adapted for the manufacture or treatment of semiconductor or solid state devices or of parts thereof
- H01L21/02—Manufacture or treatment of semiconductor devices or of parts thereof
- H01L21/04—Manufacture or treatment of semiconductor devices or of parts thereof the devices having potential barriers, e.g. a PN junction, depletion layer or carrier concentration layer
- H01L21/18—Manufacture or treatment of semiconductor devices or of parts thereof the devices having potential barriers, e.g. a PN junction, depletion layer or carrier concentration layer the devices having semiconductor bodies comprising elements of Group IV of the Periodic Table or AIIIBV compounds with or without impurities, e.g. doping materials
- H01L21/30—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
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L21/00—Processes or apparatus adapted for the manufacture or treatment of semiconductor or solid state devices or of parts thereof
- H01L21/67—Apparatus specially adapted for handling semiconductor or electric solid state devices during manufacture or treatment thereof; Apparatus specially adapted for handling wafers during manufacture or treatment of semiconductor or electric solid state devices or components ; Apparatus not specifically provided for elsewhere
- H01L21/673—Apparatus specially adapted for handling semiconductor or electric solid state devices during manufacture or treatment thereof; Apparatus specially adapted for handling wafers during manufacture or treatment of semiconductor or electric solid state devices or components ; Apparatus not specifically provided for elsewhere using specially adapted carriers or holders; Fixing the workpieces on such carriers or holders
- H01L21/67303—Vertical boat type carrier whereby the substrates are horizontally supported, e.g. comprising rod-shaped elements
Definitions
- the present disclosure relates to a semiconductor device manufacturing method, a substrate processing apparatus, and a program.
- a process of forming a film on a substrate housed in a processing chamber may be performed.
- the film to be formed include a thin film such as a titanium nitride film (TiN film) (see, for example, Patent Document 1).
- the in-plane film thickness distribution of the thin film may be required to control the in-plane film thickness distribution of the thin film in accordance with the surface area and electrical characteristics of the substrate.
- An object of the present disclosure is to provide a technique for controlling the in-plane film thickness distribution of a thin film in accordance with the surface area and electrical characteristics of the substrate when a thin film is formed on the substrate.
- a first step of supplying a source gas and an inert gas to a substrate in a processing chamber A second step of removing the source gas remaining in the processing chamber by supplying an inert gas to the substrate while the supply of the source gas is stopped; A third step of supplying a reactive gas and an inert gas to the substrate; A fourth step of supplying an inert gas to the substrate in a state where the supply of the reaction gas is stopped to remove the reaction gas remaining in the processing chamber;
- a technique is provided that has a timing at which the flow rate of the inert gas is less than the flow rate of the inert gas supplied in the third step.
- the present disclosure it is possible to provide a technique for controlling the in-plane film thickness distribution of a thin film in accordance with the surface area and electrical characteristics of the substrate when a thin film is formed on the substrate.
- FIG. 1 is a schematic diagram illustrating the concept of the present disclosure.
- FIG. 2 is a schematic configuration diagram of a vertical processing furnace of a substrate processing apparatus suitably used in an embodiment of the present disclosure, and is a diagram illustrating a processing furnace part in a vertical cross-sectional view.
- FIG. 3 is a schematic configuration diagram of a vertical processing furnace of a substrate processing apparatus suitably used in an embodiment of the present disclosure, and is a diagram illustrating a processing furnace part in a cross-sectional view taken along line XX of FIG.
- FIG. 4 is a schematic configuration diagram of a controller of the substrate processing apparatus preferably used in an embodiment of the present disclosure, and is a diagram illustrating a control system of the controller in a block diagram.
- FIG. 5 is a diagram illustrating gas supply timings according to an embodiment of the present disclosure.
- FIG. 6 is a diagram illustrating an experimental result in an embodiment of the present disclosure.
- a source gas is supplied to a processing chamber containing the substrate and adsorbed on the substrate to form an adsorption layer of the source gas; ) Thereafter, an inert gas is supplied to replace (remove) the source gas remaining in the processing chamber.
- a reactive gas that causes a chemical reaction with the source gas adsorption layer is supplied to form a thin film layer.
- an inert gas is supplied to replace the reactive gas remaining in the processing chamber, and (a) to (d) are repeated to form a thin film on the substrate.
- the inventors conducted intensive research and found that when replacing the reactive gas in (d), the supply flow rate of the inert gas was adjusted and optimized, so that the film was formed at the central portion and the outer peripheral portion of the substrate. It has been found that the thickness distribution can be changed. For example, in FIG. 1, when a plurality of substrates (Wafer) are arranged and processed, if a reactive gas and an inert gas are supplied to a substrate on which a thin film is deposited, the reactive gas and the inert gas are generated between the substrates. Mixed.
- the reaction gas When the supply flow rate of the inert gas is increased in the replacement step after the supply of the reaction gas, the reaction gas is easily exhausted, and a film having a good in-plane uniformity with a flat (flat) thickness is obtained.
- the inert gas supply flow rate is reduced in the replacement step after the supply of the reactive gas, the reactive gas can be replaced because the inert gas is present at the outer peripheral portion of the substrate, but the inert gas is inert at the central portion of the substrate. Since the amount of gas is reduced, the proportion of the reaction gas that can be replaced is reduced, and the reaction gas tends to stay.
- the reactive gas can be efficiently removed at the outer peripheral portion of the substrate, but the inert gas is small at the central portion of the substrate and the reactive gas on the substrate cannot be removed.
- Temporarily a concentration gradient of the reaction gas is generated in the surface of the substrate, and the concentration of the reaction gas is high in the central portion of the substrate and the concentration of the reaction gas is low in the outer peripheral portion of the substrate.
- the source gas adsorbed on the substrate surface is likely to react at the central portion of the substrate and hardly react at the outer peripheral portion of the substrate.
- the processing furnace 202 has a heater 207 as a heating means (heating mechanism, heating system).
- the heater 207 has a cylindrical shape and is vertically installed by being supported by a heater base (not shown) as a holding plate.
- a reaction tube 203 constituting a reaction vessel (processing vessel) concentrically with the heater 207 is disposed.
- the reaction tube 203 is made of a heat-resistant material (for example, quartz (SiO 2 ) or silicon carbide (SiC)), and has a cylindrical shape with the upper end closed and the lower end opened.
- a manifold (inlet flange) 209 is disposed below the reaction tube 203 concentrically with the reaction tube 203.
- the manifold 209 is made of a metal such as stainless steel (SUS), for example, and is formed in a cylindrical shape with an upper end and a lower end opened.
- the upper end portion of the manifold 209 is engaged with the lower end portion of the reaction tube 203 and is configured to support the reaction tube 203.
- An O-ring 220a as a seal member is provided between the manifold 209 and the reaction tube 203.
- the reaction tube 203 is installed vertically.
- a processing vessel (reaction vessel) is mainly constituted by the reaction tube 203 and the manifold 209.
- a processing chamber 201 is formed in the cylindrical hollow portion of the processing container.
- the processing chamber 201 is configured to be able to accommodate wafers 200 as substrates in a state where they are aligned in multiple stages in a vertical posture in a horizontal posture by a boat 217 described later.
- nozzles 410 and 420 are provided so as to penetrate the side wall of the manifold 209.
- Gas supply pipes 310 and 320 as gas supply lines are connected to the nozzles 410 and 420, respectively.
- the gas supply pipes 310 and 320 are provided with mass flow controllers (MFC) 512 and 522 as flow rate controllers (flow rate control units) and valves 314 and 324 as opening / closing valves in order from the upstream side.
- MFC mass flow controllers
- Gas supply pipes 510 and 520 for supplying an inert gas are connected to the downstream sides of the valves 314 and 324 of the gas supply pipes 310 and 320.
- the gas supply pipes 510 and 520 are provided with MFCs 512 and 522 as flow rate controllers (flow rate control units) and valves 514 and 524 as opening / closing valves in order from the upstream side.
- the nozzles 410 and 420 are configured as L-shaped long nozzles, and the horizontal portion thereof is provided so as to penetrate the side wall of the manifold 209.
- the vertical portions of the nozzles 410 and 420 are in an annular space formed between the inner wall of the reaction tube 203 and the wafer 200, and move upward along the inner wall of the reaction tube 203 (upward in the arrangement direction of the wafers 200). It is provided to rise (that is, to rise from one end side to the other end side of the wafer arrangement region). That is, the nozzles 410 and 420 are provided on the side of the wafer arrangement area where the wafers 200 are arranged, in an area that horizontally surrounds the wafer arrangement area, along the wafer arrangement area.
- Gas supply holes 410 a and 420 a for supplying gas are provided on the side surfaces of the nozzles 410 and 420 so as to correspond to the substrate arrangement region in which the wafers 200 are arranged along the arrangement direction of the wafers 200.
- the gas supply holes 410 a and 420 a are opened to face the center of the reaction tube 203.
- a plurality of the gas supply holes 410a and 420a are provided from the lower part to the upper part of the reaction tube 203, have the same opening area, and are provided at the same opening pitch.
- the gas supply holes 410a and 420a are not limited to the above-described form.
- the opening area may be gradually increased from the lower part to the upper part of the reaction tube 203. Thereby, the flow rate of the gas supplied from the gas supply holes 410a and 420a can be made uniform.
- a raw material gas is supplied as a processing gas into the processing chamber 201 through the MFC 312, the valve 314, and the nozzle 410.
- the source gas for example, titanium tetrachloride (TiCl 4 ) as a titanium-containing source (Ti-containing source gas, Ti-containing gas) that is a metal-containing source (metal-containing gas) containing titanium (Ti) that is a metal element. Gas is used.
- a processing gas is supplied into the processing chamber 201 through a nozzle 420 and a nitriding gas (nitriding agent, nitriding raw material) as a reactive gas that is an N-containing gas containing nitrogen (N).
- a nitriding gas nitriding agent, nitriding raw material
- N an N-containing gas containing nitrogen
- the N-containing gas for example, ammonia (NH 3 gas) can be used.
- an inert gas for example, nitrogen (N 2 ) gas is supplied into the processing chamber 201 through the MFCs 512 and 522, the valves 514 and 524, and the nozzles 410 and 420, respectively.
- nitrogen (N 2 ) gas is supplied into the processing chamber 201 through the MFCs 512 and 522, the valves 514 and 524, and the nozzles 410 and 420, respectively.
- the liquid TiCl 4 is vaporized by a vaporization system such as a vaporizer or a bubbler, and the TiCl 4 gas is contained in the processing chamber 201. Will be supplied.
- the processing gas supply system is mainly configured by the gas supply pipes 310 and 320, the MFCs 312 and 322, and the valves 314 and 324.
- the nozzles 410 and 420 may be included in the processing gas supply system.
- the processing gas supply system may be simply referred to as a gas supply system.
- a source gas supply system is mainly configured by the gas supply pipe 310, the MFC 312 and the valve 314.
- the nozzle 410 may be included in the source gas supply system.
- the source gas supply system can also be referred to as a metal-containing gas supply system.
- the metal-containing gas supply system can also be referred to as a TiCl 4 gas supply system.
- a reaction gas supply system is mainly configured by the gas supply pipe 320, the MFC 322, and the valve 324.
- the nozzle 420 may be included in the reaction gas supply system.
- the reaction gas supply system can also be referred to as an N-containing gas supply system or a nitriding gas supply system.
- NH 3 gas supply system When flowing the NH 3 gas from the gas supply pipe 320, it may also be referred to as NH 3 gas supply system the N-containing gas supply system.
- the inert gas supply system is mainly configured by the gas supply pipes 510 and 520, the MFCs 512 and 522, and the valves 514 and 524.
- the reaction tube 203 is provided with an exhaust pipe 231 for exhausting the atmosphere in the processing chamber 201.
- the exhaust pipe 231 includes, in order from the upstream side, a pressure sensor 245 serving as a pressure detector (pressure detection unit) for detecting the pressure in the processing chamber 201, an APC (Auto Pressure Controller) valve 243, and a vacuum pump serving as a vacuum exhaust device. 246 is connected.
- the APC valve 243 can be evacuated and stopped in the processing chamber 201 by opening and closing the valve while the vacuum pump 246 is operated. Further, the APC valve 243 can be operated while the vacuum pump 246 is operated.
- the valve is configured so that the pressure in the processing chamber 201 can be adjusted by adjusting the opening.
- An exhaust system is mainly configured by the exhaust pipe 231, the APC valve 243, and the pressure sensor 245.
- the vacuum pump 246 may be included in the exhaust system.
- a seal cap 219 is provided as a furnace opening lid capable of airtightly closing the lower end opening of the manifold 209.
- the seal cap 219 is configured to contact the lower end of the manifold 209 from the lower side in the vertical direction.
- the seal cap 219 is made of a metal such as SUS and is formed in a disk shape.
- an O-ring 220b is provided as a seal member that comes into contact with the lower end of the manifold 209.
- a rotation mechanism 267 for rotating a boat 217 described later is installed on the opposite side of the seal cap 219 from the processing chamber 201.
- a rotation shaft 255 of the rotation mechanism 267 passes through the seal cap 219 and is connected to the boat 217.
- the rotation mechanism 267 is configured to rotate the wafer 200 by rotating the boat 217.
- the seal cap 219 is configured to be lifted and lowered in the vertical direction by a boat elevator 115 as a lifting mechanism vertically installed outside the reaction tube 203.
- the boat elevator 115 is configured so that the boat 217 can be carried in and out of the processing chamber 201 by moving the seal cap 219 up and down.
- the boat elevator 115 is configured as a transfer device (transfer mechanism) that transfers the boat 217, that is, the wafers 200 into and out of the processing chamber 201.
- the boat 217 as a substrate support is configured to support a plurality of, for example, 25 to 200, wafers 200 in a multi-stage manner by aligning them vertically in a horizontal posture and with their centers aligned. It is configured to arrange at intervals.
- a top plate 215 is provided at the top of the boat 217.
- the boat 217 is made of a heat-resistant material such as quartz or SiC.
- heat insulating plates 218 made of a heat-resistant material such as quartz or SiC are supported in multiple stages in a horizontal posture. With this configuration, heat from the heater 207 is not easily transmitted to the seal cap 219 side.
- this embodiment is not limited to the above-mentioned form.
- a heat insulating cylinder configured as a cylindrical member made of a heat resistant material such as quartz or SiC may be provided.
- a temperature sensor 263 as a temperature detector is installed in the reaction tube 203, and the temperature in the processing chamber 201 is adjusted by adjusting the energization amount to the heater 207 based on the temperature information detected by the temperature sensor 263. It is configured to have a desired temperature distribution.
- the temperature sensor 263 is configured in an L shape like the nozzles 410 and 420, and is provided along the inner wall of the reaction tube 203.
- the controller 121 which is a control unit (control means), is configured as a computer including a CPU (Central Processing Unit) 121a, a RAM (Random Access Access Memory) 121b, a storage device 121c, and an I / O port 121d.
- the RAM 121b, the storage device 121c, and the I / O port 121d are configured to exchange data with the CPU 121a via an internal bus.
- an input / output device 122 configured as a touch panel or the like is connected to the controller 121.
- the storage device 121c includes, for example, a flash memory, a HDD (Hard Disk Drive), and the like.
- a recipe, a purge recipe in which a procedure, conditions, and the like of a purge process to be described later are stored are readable.
- the process recipe is a combination of instructions so that the controller 121 can execute each procedure in the substrate processing process described later and obtain a predetermined result, and functions as a program.
- the cleaning recipe is a combination of procedures so that a predetermined result can be obtained by causing the controller 121 to execute each procedure in the cleaning process described later, and functions as a program.
- the purge recipe is a combination of procedures that allow the controller 121 to execute each procedure in the purge process described later and obtain a predetermined result, and functions as a program.
- the process recipe, cleaning recipe, purge recipe, control program, and the like are collectively referred to simply as a program.
- the term program includes only a process recipe alone, only a cleaning recipe alone, only a purge recipe alone, only a control program alone, or a process recipe, Any combination of cleaning recipe, purge recipe and control program may be included.
- the RAM 121b is configured as a memory area (work area) in which programs, data, and the like read by the CPU 121a are temporarily stored.
- the I / O port 121d includes the above-described MFC 312, 322, 512, 522, valve 314, 324, 514, 524, APC valve 243, pressure sensor 245, vacuum pump 246, heater 207, temperature sensor 263, rotating mechanism 267, boat It is connected to the elevator 115 and the like.
- the CPU 121a is configured to read out and execute a control program from the storage device 121c, and to read out a process recipe, a cleaning recipe, a purge recipe, and the like from the storage device 121c in response to an operation command input from the input / output device 122 or the like. Yes.
- these recipes are collectively referred to as “recipe”.
- the CPU 121a adjusts the flow rates of various gases by the MFCs 312, 322, 512, and 522, the opening and closing operations of the valves 314, 324, 514, and 524, the opening and closing operations of the APC valve 243, and the APC valve 243 in accordance with the contents of the read recipe.
- the controller 121 is stored in an external storage device 123 (for example, a magnetic tape, a magnetic disk such as a flexible disk or a hard disk, an optical disk such as a CD or a DVD, a magneto-optical disk such as an MO, or a semiconductor memory such as a USB memory or a memory card).
- the above-mentioned program can be configured by installing it in a computer.
- the storage device 121c and the external storage device 123 are configured as computer-readable recording media. Hereinafter, these are collectively referred to simply as a recording medium.
- recording medium When the term “recording medium” is used in this specification, it may include only the storage device 121c alone, may include only the external storage device 123 alone, or may include both.
- the program may be provided to the computer using a communication means such as the Internet or a dedicated line without using the external storage device 123.
- TiCl 4 gas as a source gas and NH 3 gas as a reaction gas are supplied to a wafer 200 as a substrate housed in a processing chamber 201, and the wafer A titanium nitride film (TiN film) is formed on 200.
- wafer When the term “wafer” is used in this specification, it may mean the wafer itself or a laminate of the wafer and a predetermined layer or film formed on the surface thereof.
- wafer surface When the term “wafer surface” is used in this specification, it may mean the surface of the wafer itself, or may mean the surface of a predetermined layer or the like formed on the wafer.
- the phrase “form a predetermined layer on the wafer” means that the predetermined layer is directly formed on the surface of the wafer itself, a layer formed on the wafer, etc. It may mean that a predetermined layer is formed on the substrate.
- substrate is also synonymous with the term “wafer”.
- a plurality of wafers 200 are loaded into the boat 217 (wafer charge). Thereafter, as shown in FIG. 1, the boat 217 that supports the plurality of wafers 200 is lifted by the boat elevator 115 and loaded into the processing chamber 201 (boat loading). In this state, the seal cap 219 is in a state where the lower end of the manifold 209 is closed via the O-ring 220.
- the inside of the processing chamber 201 that is, the space where the wafer 200 exists is evacuated by the vacuum pump 246 so that a desired pressure (degree of vacuum) is obtained.
- the pressure in the processing chamber 201 is measured by the pressure sensor 245, and the APC valve 243 is feedback-controlled based on the measured pressure information (pressure adjustment).
- the vacuum pump 246 keeps operating at least until the processing on the wafer 200 is completed.
- the processing chamber 201 is heated by the heater 207 so as to have a desired temperature.
- the energization amount to the heater 207 is feedback-controlled based on the temperature information detected by the temperature sensor 263 so that the processing chamber 201 has a desired temperature distribution (temperature adjustment).
- the heating of the processing chamber 201 by the heater 207 is continuously performed at least until the processing on the wafer 200 is completed.
- the rotation mechanism 267 starts the rotation of the boat 217 and the wafer 200.
- the rotation of the boat 217 and the wafer 200 by the rotation mechanism 267 is continuously performed at least until the processing on the wafer 200 is completed.
- the valve 314 is opened and a TiCl 4 gas that is a raw material gas is caused to flow into the gas supply pipe 310.
- the flow rate of the TiCl 4 gas flowing in the gas supply pipe 310 is adjusted by the MFC 312, supplied into the processing chamber 201 from the gas supply hole 410 a of the nozzle 410, and exhausted from the exhaust pipe 231.
- TiCl 4 gas is supplied to the wafer 200.
- the valve 514 is opened, and an inert gas such as N 2 gas is allowed to flow into the gas supply pipe 510.
- the flow rate of the N 2 gas flowing through the gas supply pipe 510 is adjusted by the MFC 512, supplied into the processing chamber 201 together with the TiCl 4 gas, and exhausted from the exhaust pipe 231.
- the valve 524 is opened, and N 2 gas (back flow preventing N 2 gas) is caused to flow into the gas supply pipe 520.
- the N 2 gas is supplied into the processing chamber 201 through the gas supply pipe 520 and the nozzle 420 and is exhausted from the exhaust pipe 231.
- Pressure in processing chamber 201 1 to 1330 Pa, preferably 40 to 1100 Pa
- TiCl 4 gas supply flow rate 0.01 to 1.0 slm, preferably 0.1 to 0.5 slm N 2 gas supplied from nozzles 410 and 420
- Total supply flow rate 0.5 to 5.0 slm, preferably 2.0 to 3.0 slm
- Gas supply time 1 to 60 seconds, preferably 1 to 10 seconds
- Processing temperature 200 to 700 ° C., preferably 300 to 600 C. is exemplified.
- 1 to 1330 Pa means 1 Pa to 1330 Pa. That is, 1 Pa and 1330 Pa are included in the numerical range. The same applies not only to pressure but also to all numerical values described in this specification, such as flow rate, time, temperature, and the like.
- TiCl 4 adsorbed layer is adsorbed layer of TiCl 4 gas is formed. It can be said that the TiCl 4 adsorption layer is a Ti-containing layer containing Ti.
- the valve 314 is closed and the supply of TiCl 4 gas is stopped.
- the APC valve 243 of the exhaust pipe 231 is kept open, the inside of the processing chamber 201 is evacuated by the vacuum pump 246, and TiCl after remaining in the processing chamber 201 or contributing to formation of the TiCl 4 adsorption layer Four gases are removed from the processing chamber 201.
- the valves 514 and 524 are controlled to adjust the total supply flow rate of N 2 gas supplied into the processing chamber 201 to be larger than the total supply flow rate of N 2 gas in the raw material gas supply step.
- the N 2 gas acts as a replacement gas (purge gas), and it is possible to enhance the effect of removing the unreacted residual TiCl 4 gas remaining in the processing chamber 201 or the TiCl 4 gas after contributing to the formation of the TiCl 4 adsorption layer from the processing chamber 201. . Further, the effect of removing (blowing away) the TiCl 4 gas physically adsorbed on the wafer 200 from the inside of the processing chamber 201 can be enhanced.
- Total supply flow rate of N 2 gas supplied from the nozzles 410 and 420 0.1 to 15.0 slm, preferably 7.0 to 13.0 slm
- Each gas supply time is 2 to 30 seconds, preferably 4 to 10 seconds.
- the total supply flow rate of the N 2 gas supplied from the nozzles 410 and 420 is less than 0.1 slm, the unreacted or residual TiCl 4 gas that has contributed to the formation of the TiCl 4 adsorption layer in the processing chamber 201 or on the wafer 200 In some cases, the TiCl 4 gas physically adsorbed on the substrate cannot be sufficiently removed from the processing chamber 201 and remains. If the total supply flow rate of N 2 gas supplied from the nozzles 410 and 420 is more than 15.0 slm, the pressure in the processing chamber 201 becomes too high, and the time for reducing the pressure before performing the next reactive gas supply step is performed. May reduce throughput.
- N 2 replacement (purge) by supplying N 2 gas and evacuation may be alternately repeated.
- the physisorbed TiCl 4 gas onto the wafer 200 more efficient processing chamber It becomes possible to exclude from 201.
- the effect of suppressing turbulent flow of TiCl 4 gas and NH 3 gas by performing N 2 replacement (purge) Can be increased.
- the total feed flow rate of N 2 gas supplied from the nozzle 410 and 420 immediately after stopping the supply of the TiCl 4 gas by the same flow rate as during the supply of the TiCl 4 gas, increase the effect of suppressing the turbulence be able to.
- N 2 replacement (purge) by supplying N 2 gas may be continuously performed even during evacuation.
- the process conditions of N 2 replacement (purge) by supplying N 2 gas are as described above.
- the valve 324 is opened, and NH 3 gas that is a reaction gas is caused to flow into the gas supply pipe 320.
- the NH 3 gas flowing in the gas supply pipe 320 is adjusted in flow rate by the MFC 322 and supplied into the processing chamber 201 from the gas supply hole 420 a of the nozzle 420.
- the NH 3 gas supplied into the processing chamber 201 is exhausted from the exhaust pipe 231.
- NH 3 gas is supplied to the wafer 200.
- the valve 524 is opened, and an inert gas such as N 2 gas is allowed to flow into the gas supply pipe 520.
- the flow rate of the N 2 gas flowing in the gas supply pipe 520 is adjusted by the MFC 522, supplied together with the NH 3 gas into the processing chamber 201, and exhausted from the exhaust pipe 231.
- the valve 514 is opened, and N 2 gas (backflow preventing N 2 gas) is caused to flow into the gas supply pipe 510.
- the N 2 gas is supplied into the processing chamber 201 through the gas supply pipe 510 and the nozzle 410 and is exhausted from the exhaust pipe 231.
- Pressure in the processing chamber 201 1 to 1330 Pa, preferably 50 to 1110 Pa
- Total supply flow rate of N 2 gas supplied from the nozzles 410 and 420 0.5 to 5.0 slm, preferably 1.0 to 3.0 slm
- Each gas supply time 1 to 120 seconds, preferably 5 to 60 seconds Is exemplified.
- Other processing conditions such as the processing temperature are the same as the processing conditions in the source gas supply step.
- the gases flowing into the processing chamber 201 are only NH 3 gas and N 2 gas.
- the NH 3 gas undergoes a substitution reaction with at least a part of the TiCl 4 adsorption layer formed on the wafer 200 in the source gas supply step.
- Ti contained in the TiCl 4 adsorption layer and N contained in the NH 3 gas are combined to form a TiN layer containing Ti and N on the wafer 200.
- the valves 514 and 524 are controlled to adjust the total supply flow rate of the N 2 gas supplied into the processing chamber 201 to be smaller than the total supply flow rate in the reaction gas supply step. That is, in the residual gas removal step, a total supply flow rate of N 2 gas supplied into the processing chamber 201 is adjusted to have less composed timing than the total supply flow rate of N 2 gas in the reactive gas supply step.
- N 2 gas acts as a replacement gas (purge gas), and NH 3 gas and by-products (for example, HCl, etc.) remaining in the processing chamber 201 and contributing to formation of the TiN layer are removed from the processing chamber 201. The effect to eliminate can be heightened.
- the outer peripheral portion of the wafer 200 by adjusting the total supply flow rate of N 2 gas supplied into the process chamber 201 to be less than the total supply flow rate of N 2 gas in the reaction gas supply step, the outer peripheral portion of the wafer 200, more NH 3 gas The effect which eliminates can be heightened. Further, more NH 3 gas physically adsorbed on the wafer 200 can be removed (blowed off) from the outer peripheral portion of the wafer 200, and the effect of removing it from the processing chamber 201 can be enhanced. At the same time, NH 3 gas that has not reacted or contributed to the formation of the TiN layer is retained in the central portion of the wafer 200 and further reacted with the TiCl 4 adsorption layer or TiN layer in the central portion, thereby having a convex distribution. A TiN layer can be formed.
- Total supply flow rate of N 2 gas supplied from the nozzles 410 and 420 0.1 to 5.0 slm, preferably 0.6 to 3.0 slm
- Each gas supply time is 2 to 30 seconds, preferably 4 to 10 seconds.
- the NH 3 gas and by-products remaining in the processing chamber 201 or contributed to TiN layer formation are processed.
- the chamber 201 may not be sufficiently removed and may remain. If the total supply flow rate of N 2 gas supplied from the nozzles 410 and 420 is more than 10.0 slm, a difference in film thickness distribution cannot be created between the outer peripheral portion and the central portion of the wafer 200, and the desired in-plane uniformity. You may not be able to get sex.
- N 2 replacement (purge) by supplying N 2 gas and evacuation may be alternately repeated.
- the processing chamber NH 3 gas and by-products or after contributing to unreacted or TiN layer formed remaining in the 201 the NH 3 gas physically adsorbed on the wafer 200, more efficiently It can be excluded from the processing chamber 201.
- the total supply flow rate of N 2 gas supplied into the processing chamber 201 is adjusted to be smaller than the total supply flow rate in the reaction gas supply step. Thereafter, at the timing immediately before starting the supply of TiCl 4 gas, the effect of suppressing turbulence can be enhanced by adjusting the flow rate to be the same as the total supply flow rate in the raw material gas supply step. Further, N 2 replacement (purge) by supplying N 2 gas may be continuously performed even during evacuation. When performing continuously, the process conditions of N 2 replacement (purge) by supplying N 2 gas are as described above.
- the total supply flow rate of the N 2 gas supplied into the processing chamber 201 may be adjusted so as to be continuously supplied at a flow rate smaller than the total supply flow rate in the reaction gas supply step.
- the total supply flow rate of the N 2 gas supplied into the processing chamber 201 is set to the same flow rate as the total supply flow rate in the reaction gas supply step at the timing immediately after the supply of the NH 3 gas is stopped, and the TiCl 4 gas in the next cycle
- the flow rate may be adjusted to be the same flow rate as the total supply flow rate in the raw material gas supply step at the timing immediately before starting the supply, and the flow rate may be lower than the total supply flow rate in the reaction gas supply step at other timings.
- a TiN film having a predetermined thickness is formed on the wafer 200 by performing a predetermined number of cycles (n times, where n is an integer of 1 or more) in which the above steps are performed in a time-sharing manner.
- the value of n is appropriately selected according to the film thickness required for the finally formed TiN film. That is, the number of times each of the above-described processes is performed is determined according to the target film thickness.
- the above cycle is preferably repeated multiple times.
- the thickness of the TiN film is, for example, 0.1 to 300 nm, preferably 0.8 to 200 nm.
- N 2 gas is supplied into the processing chamber 201 from the gas supply pipes 510 and 520, and exhausted from the exhaust pipe 231.
- the N 2 gas acts as a purge gas, whereby the inside of the processing chamber 201 is purged with an inert gas, and the gas and by-products remaining in the processing chamber 201 are removed from the processing chamber 201 (purge). Thereafter, the atmosphere in the processing chamber 201 is replaced with an inert gas (inert gas replacement), and the pressure in the processing chamber 201 is returned to normal pressure (return to atmospheric pressure).
- the desired film thickness distribution can be obtained by changing the film thickness distribution.
- the electrical characteristics can be improved by changing the film thickness distribution between the central portion and the outer peripheral portion of the substrate to obtain a desired film thickness distribution.
- C By changing the film thickness distribution between the central part and the outer peripheral part of the substrate to obtain a desired film thickness distribution, it becomes prominent when the film is formed on the patterned substrate having a large surface area. It is possible to take measures against the loading effect.
- FIG. 6 shows the results obtained by varying the supply flow rate of the inert gas supplied in the residual gas removal step after the reaction gas supply, as the experimental results of this embodiment. Thickness ratio of the wafer 200 to the center of the wafer 200 with respect to the distance from the center of the wafer 200 (Distance from Wafer center), and the film thickness ratio to the center of the wafer 200 is the center of the wafer 200 Is a correction value converted to 100%.
- FIG. 6 shows that the in-plane film thickness distribution changes to a convex shape as the supply flow rate of the inert gas decreases.
- N 2 gas is exemplified as the inert gas.
- the inert gas for example, a rare gas such as Ar gas, He gas, Ne gas, and Xe gas is used in addition to the N 2 gas. Can be used.
- the TiO film using Ti element is exemplified as the film formed on the substrate.
- tantalum (Ta), tungsten (W) as elements other than Ti.
- Oxide films and nitride films containing elements such as cobalt (Co), yttrium (Y), ruthenium (Ru), aluminum (Al), hafnium (Hf), zirconium (Zr), molybdenum (Mo), and silicon (Si)
- the present invention can also be suitably applied when forming a carbonized film or a composite film thereof.
- examples of the source gas include, besides TiCl 4 , tetrakisdimethylaminotitanium (Ti [N (CH 3 ) 2 ] 4 ), tantalum pentachloride (TaCl 5 ), penta Ethoxy tantalum (Ta (OC 2 H 5 ) 5 ), tungsten hexafluoride (WF 6 ), bis (tertiary butyl imino) bis (tertiary butyl amino) tungsten ((C 4 H 9 NH) 2 W (C 4 H 9 N) 2 ), cobalt dichloride (CoCl 2 ), bis (ethylcyclopentadienyl) cobalt (C 14 H 18 Co), yttrium trichloride (YCl 3 ), tris (butylcyclopentadienyl) yttrium (Y (C 5 H 4 CH 2 (CH 2) 2 CH 3) 3),
- reaction gas examples include ammonia (NH 3 ), nitrogen oxide (N 2 O), ozone (O 3 ), oxygen (O 2 ), water vapor (H 2 O), and hydrogen peroxide (H 2 O). 2 ), a mixed gas of O 2 + H 2 , water vapor (H 2 O gas), propylene (C 3 H 6 ), etc., or those obtained by plasma excitation of these can also be used.
- the reaction tube may have a double-pipe structure having an internal reaction tube (inner tube) and an external reaction tube (outer tube) provided outside the reaction tube.
- Process recipes used for film formation of these various thin films include film formation processing and cleaning processing. It is preferable to prepare individually (multiple preparations) according to the contents of the purge process (formation or film type of thin film to be removed, composition ratio, film quality, film thickness, etc.). And when starting various processes, it is preferable to select an appropriate recipe suitably from a some recipe according to the content of a process.
- a plurality of recipes individually prepared according to processing contents are stored in a storage device 121c included in the substrate processing apparatus via an electric communication line or a recording medium (external storage device 123) on which the recipe is recorded. It is preferable to store (install) in advance.
- the CPU 121a included in the substrate processing apparatus When starting the film forming process, the cleaning process, and the purge process, the CPU 121a included in the substrate processing apparatus appropriately selects an appropriate recipe from a plurality of recipes stored in the storage device 121c according to the processing content. It is preferable to select.
- thin films having various film types, composition ratios, film qualities, and film thicknesses can be formed and removed for general use with good reproducibility using a single substrate processing apparatus.
- it is possible to reduce an operator's operation burden such as an input burden of a processing procedure and a processing condition
- the above-described process recipe, cleaning recipe, and purge recipe are not limited to newly created, and may be prepared by, for example, changing an existing recipe that has already been installed in the substrate processing apparatus.
- the changed recipe may be installed in the substrate processing apparatus via an electric communication line or a recording medium on which the recipe is recorded.
- an existing recipe that has already been installed in the substrate processing apparatus may be directly changed by operating the input / output device 122 provided in the existing substrate processing apparatus.
- processing conditions at this time can be the same processing conditions as in the above-described embodiment, for example.
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Abstract
Description
原料ガスの供給を止めた状態で、基板に対して不活性ガスを供給して、処理室内に残留する原料ガスを除去する第2の工程と、
基板に対して、反応ガスと不活性ガスを供給する第3の工程と、
反応ガスの供給を止めた状態で、基板に対して不活性ガスを供給して、処理室内に残留する反応ガスを除去する第4の工程と、
を有し、
第4の工程では、不活性ガスの流量が、第3の工程で供給する不活性ガスの流量より少なくなるタイミングを有する技術が提供される。
以下、実施形態の例について、主に、図2~図4を用いて説明する。
処理炉202は加熱手段(加熱機構、加熱系)としてのヒータ207を有する。ヒータ207は円筒形状であり、保持板としてのヒータベース(図示せず)に支持されることにより垂直に据え付けられている。
上述の基板処理装置を用い、半導体装置(デバイス)の製造工程の一工程として、基板上に膜を形成するシーケンス例について、図5を用いて説明する。以下の説明において、基板処理装置を構成する各部の動作はコントローラ121により制御される。
複数枚のウエハ200がボート217に装填(ウエハチャージ)される。その後、図1に示すように、複数枚のウエハ200を支持したボート217は、ボートエレベータ115によって持ち上げられて処理室201内に搬入(ボートロード)される。この状態で、シールキャップ219は、Oリング220を介してマニホールド209の下端を閉塞した状態となる。
処理室201内、すなわち、ウエハ200が存在する空間が所望の圧力(真空度)となるように真空ポンプ246によって真空排気される。この際、処理室201内の圧力は、圧力センサ245で測定され、この測定された圧力情報に基づき、APCバルブ243がフィードバック制御される(圧力調整)。真空ポンプ246は、少なくともウエハ200に対する処理が完了するまでの間は常時作動させた状態を維持する。また、処理室201内が所望の温度となるようにヒータ207によって加熱される。この際、処理室201内が所望の温度分布となるように、温度センサ263が検出した温度情報に基づきヒータ207への通電量がフィードバック制御される(温度調整)。ヒータ207による処理室201内の加熱は、少なくともウエハ200に対する処理が完了するまでの間は継続して行われる。続いて、回転機構267によりボート217およびウエハ200の回転を開始する。回転機構267によるボート217およびウエハ200の回転は、少なくとも、ウエハ200に対する処理が完了するまでの間は継続して行われる。
その後、以下のステップを順次実施する。
バルブ314を開き、ガス供給管310内に原料ガスであるTiCl4ガスを流す。ガス供給管310内を流れるTiCl4ガスは、MFC312により流量調整され、ノズル410のガス供給孔410aから処理室201内に供給され、排気管231から排気される。このとき、ウエハ200に対してTiCl4ガスが供給されることとなる。このとき同時にバルブ514を開き、ガス供給管510内にN2ガス等の不活性ガスを流す。ガス供給管510内を流れるN2ガスは、MFC512により流量調整され、TiCl4ガスと一緒に処理室201内に供給され、排気管231から排気される。このとき、ノズル420内へのTiCl4ガスの侵入を防止するために、バルブ524を開き、ガス供給管520内にN2ガス(逆流防止N2ガス)を流す。N2ガスは、ガス供給管520、ノズル420を介して処理室201内に供給され、排気管231から排気される。
処理室201内の圧力:1~1330Pa、好ましくは40~1100Pa TiCl4ガス供給流量:0.01~1.0slm、好ましくは0.1~0.5slm ノズル410,420から供給するN2ガスの総供給流量:0.5~5.0slm、好ましくは2.0~3.0slm 各ガス供給時間:1~60秒、好ましくは1~10秒 処理温度:200~700℃、好ましくは300~600℃ が例示される。本明細書では、数値の範囲として、例えば1~1330Paと記載した場合は、1Pa以上1330Pa以下を意味する。すなわち、数値の範囲内には1Paおよび1330Paが含まれる。圧力のみならず、流量、時間、温度等、本明細書に記載される全ての数値について同様である。
TiCl4吸着層が形成された後、バルブ314を閉じ、TiCl4ガスの供給を停止する。このとき、排気管231のAPCバルブ243は開いたままとして、真空ポンプ246により処理室201内を真空排気し、処理室201内に残留する未反応又はTiCl4吸着層形成に寄与した後のTiCl4ガスを処理室201内から排除する。このとき、バルブ514,524を制御して、処理室201内へ供給するN2ガスの総供給流量を原料ガス供給ステップにおけるN2ガスの総供給流量より多くなるよう調整する。N2ガスは置換ガス(パージガス)として作用し、処理室201内に残留する未反応又はTiCl4吸着層形成に寄与した後のTiCl4ガスを処理室201内から排除する効果を高めることができる。また、ウエハ200上に物理吸着したTiCl4ガスをウエハ200上から除去し(吹き飛ばし)、処理室201内から排除する効果を高めることができる。
ノズル410,420から供給するN2ガスの総供給流量:0.1~15.0slm、好ましくは7.0~13.0slm
各ガス供給時間:2~30秒、好ましくは4~10秒が例示される。
処理室201内の残留ガスを除去した後、バルブ324を開き、ガス供給管320内に反応ガスであるNH3ガスを流す。ガス供給管320内を流れるNH3ガスは、MFC322により流量調整され、ノズル420のガス供給孔420aから処理室201内に供給される。処理室201内に供給されたNH3ガスは、排気管231から排気される。このときウエハ200に対して、NH3ガスが供給されることとなる。このとき同時にバルブ524を開き、ガス供給管520内にN2ガス等の不活性ガスを流す。ガス供給管520内を流れるN2ガスは、MFC522により流量調整され、NH3ガスと一緒に処理室201内に供給され、排気管231から排気される。このとき、ノズル410内へのNH3ガスの侵入を防止するために、バルブ514を開き、ガス供給管510内にN2ガス(逆流防止N2ガス)を流す。N2ガスは、ガス供給管510、ノズル410を介して処理室201内に供給され、排気管231から排気される。
処理室201内の圧力:1~1330Pa、好ましくは50~1110Pa
ノズル410,420から供給するN2ガスの総供給流量:0.5~5.0slm、好ましくは1.0~3.0slm
各ガス供給時間:1~120秒、好ましくは5~60秒
が例示される。処理温度等の他の処理条件は、原料ガス供給ステップにおける処理条件と同様とする。
TiN層を形成した後、バルブ324を閉じて、NH3ガスの供給を停止する。そして、原料ガス供給ステップの後の残留ガス除去ステップと同様の処理手順により、処理室201内に残留するガス等を処理室201内から排除する。
ノズル410,420から供給するN2ガスの総供給流量:0.1~5.0slm、好ましくは0.6~3.0slm
各ガス供給時間:2~30秒、好ましくは4~10秒が例示される。
上記した各ステップを順に時分割して行うサイクルを所定回数(n回、nは1以上の整数)行うことにより、ウエハ200上に、所定の厚さのTiN膜を形成する。nの値は、最終的に形成されるTiN膜において必要とされる膜厚に応じて適宜選択される。すなわち、上述の各処理を行う回数は、目標とする膜厚に応じて決定される。上述のサイクルは、複数回繰り返すのが好ましい。TiN膜の厚さは、例えば0.1~300nm、好ましくは0.8~200nmとする。
バルブ514,524を開き、ガス供給管510,520のそれぞれからN2ガスを処理室201内へ供給し、排気管231から排気する。N2ガスはパージガスとして作用し、これにより処理室201内が不活性ガスでパージされ、処理室201内に残留するガスや副生成物が処理室201内から除去される(パージ)。その後、処理室201内の雰囲気が不活性ガスに置換され(不活性ガス置換)、処理室201内の圧力が常圧に復帰される(大気圧復帰)。
その後、ボートエレベータ115によりシールキャップ219が下降されて、マニホールド209の下端が開口される。そして、処理済ウエハ200がボート217に支持された状態でマニホールド209の下端から反応管203の外部に搬出(ボートアンロード)される。その後、処理済のウエハ200は、ボート217より取り出される(ウエハディスチャージ)。
本実施形態によれば、以下に示す一つ又は複数の効果が得られる。
(b)基板の中央部と外周部とで膜厚分布を変化させて、所望の膜厚分布を得ることにより、電気特性の改善を行うことが可能となる。
(c)基板の中央部と外周部とで膜厚分布を変化させて、所望の膜厚分布を得ることにより、表面積の大きなパターン付基板上に成膜する際に顕著になる基板面内のローディングエフェクトに対する対策を行うことが可能となる。
(d)反応ガス供給後の置換ステップで、不活性ガスの供給流量を少なくすることにより、基板の外周部が薄く中央部が厚い凸形状の膜厚分布を有する薄膜を得ることができる。
(e)反応ガスの供給を停止した直後および次のサイクルの原料ガスの供給を開始する直前に、不活性ガスによる置換(パージ)を行うと、乱流を抑制する効果を高めることができる。
(f)反応ガスの供給を停止した直後に供給する不活性ガスの流量を反応ガスの供給時と同じ流量とすることにより、乱流を抑制する効果を高めることができる。
(g)原料ガスの供給を開始する直前に供給する不活性ガスの流量を、原料ガスの供給時と同じ流量とすることにより、乱流を抑制する効果を高めることができる。
以上、実施形態の例を具体的に説明した。しかしながら、本開示は上述の実施形態に限定されるものではなく、その要旨を逸脱しない範囲で種々変更可能である。
Claims (11)
- 処理室内の基板に対して、原料ガスと不活性ガスを供給する第1の工程と、
前記原料ガスの供給を止めた状態で、前記基板に対して前記不活性ガスを供給して、前記処理室内に残留する前記原料ガスを除去する第2の工程と、
前記基板に対して、反応ガスと前記不活性ガスを供給する第3の工程と、
前記反応ガスの供給を止めた状態で、前記基板に対して前記不活性ガスを供給して、前記処理室内に残留する前記反応ガスを除去する第4の工程と、
を有し、
前記第4の工程では、前記不活性ガスの流量が、前記第3の工程で供給する前記不活性ガスの流量より少なくなるタイミングを有する半導体装置の製造方法。 - 前記第4の工程では、
少なくとも最初の前記不活性ガスの供給時には、前記不活性ガスを前記第3の工程で供給する前記不活性ガスの流量よりも少ない流量で供給し、少なくとも最後の前記不活性ガスの供給時には、前記不活性ガスを前記第1の工程で供給する前記不活性ガスの流量と同じ流量で供給する請求項1に記載の半導体装置の製造方法。 - 前記第1の工程から前記第4の工程を順に複数回行う請求項1又は2に記載の半導体装置の製造方法。
- 前記第4の工程では、前記不活性ガスの流量が、前記第1の工程で供給する前記不活性ガスの流量と同じ流量になるタイミングを有する請求項2乃至3のいずれか一項に記載の半導体装置の製造方法。
- 前記第4の工程では、前記不活性ガスの供給と真空排気を交互に複数回行う請求項1に記載の半導体装置の製造方法。
- 前記第4の工程では、前記不活性ガスの供給と真空排気を交互に複数回行う際、少なくとも最初の前記不活性ガスの供給時には、前記不活性ガスを、前記第3の工程で供給する前記不活性ガスの流量より少ない流量で供給し、少なくとも最後の前記不活性ガスの供給時には、前記不活性ガスを、前記第1の工程で供給する前記不活性ガスの流量と同じ流量で供給する請求項5に記載の半導体装置の製造方法。
- 前記第4の工程では、前記不活性ガスを、前記第3の工程で供給する前記不活性ガスの流量より少ない流量で連続して供給する請求項1に記載の半導体装置の製造方法。
- 前記第2の工程では、前記不活性ガスの流量が、前記第1の工程で供給する前記不活性ガスの流量より多くなるタイミングを有する請求項1に記載の半導体装置の製造方法。
- 前記第2の工程では、前記不活性ガスの供給と真空排気を交互に複数回行う請求項1に記載の半導体装置の製造方法。
- 基板を収容する処理室と、
前記処理室に、原料ガス、反応ガス、不活性ガスを供給するガス供給系と、
前記処理室に収容された基板に対して、前記原料ガスと前記不活性ガスを供給する第1の処理と、前記原料ガスの供給を止めた状態で、前記基板に対して前記不活性ガスを供給して、前記処理室内に残留する前記原料ガスを除去する第2の処理と、前記基板に対して、前記反応ガスと前記不活性ガスを供給する第3の処理と、前記反応ガスの供給を止めた状態で、前記基板に対して前記不活性ガスを供給して、前記処理室内に残留する前記反応ガスを除去する第4の処理と、を行わせ、前記第4の処理において、前記不活性ガスの流量が、前記第3の工程で供給する前記不活性ガスの流量より少なくなるタイミングを有するように、前記ガス供給系を制御するよう構成される制御部と、
を有する基板処理装置。 - 基板処理装置の処理室内の基板に対して、原料ガスと不活性ガスを供給する第1の手順と、
前記原料ガスの供給を止めた状態で、前記基板に対して前記不活性ガスを供給して、前記処理室内に残留する前記原料ガスを除去する第2の手順と、
前記基板に対して、反応ガスと前記不活性ガスを供給する第3の手順と、
前記反応ガスの供給を止めた状態で、前記基板に対して前記不活性ガスを供給して、前記処理室内に残留する前記反応ガスを除去する第4の手順と、
前記第4の手順において、前記不活性ガスの流量が、前記第3の手順で供給する前記不活性ガスの流量より少なくなるタイミングを有するようにならしめる手順と、をコンピュータによって前記基板処理装置に実行させるプログラム。
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US20040101622A1 (en) * | 2002-11-20 | 2004-05-27 | Park Young Hoon | Method of depositing thin film using aluminum oxide |
JP2007046134A (ja) * | 2005-08-11 | 2007-02-22 | Tokyo Electron Ltd | 金属系膜形成方法及びプログラムを記録した記録媒体 |
JP2016072587A (ja) * | 2014-10-02 | 2016-05-09 | 株式会社日立国際電気 | 半導体装置の製造方法、基板処理装置およびプログラム |
JP2017152672A (ja) * | 2016-02-25 | 2017-08-31 | 東京エレクトロン株式会社 | 成膜方法及び成膜システム |
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JP2004091850A (ja) * | 2002-08-30 | 2004-03-25 | Tokyo Electron Ltd | 処理装置及び処理方法 |
JP5774822B2 (ja) | 2009-05-25 | 2015-09-09 | 株式会社日立国際電気 | 半導体デバイスの製造方法及び基板処理装置 |
US9396930B2 (en) * | 2013-12-27 | 2016-07-19 | Hitachi Kokusai Electric Inc. | Substrate processing apparatus |
CN107112235B (zh) * | 2015-01-07 | 2020-11-20 | 株式会社国际电气 | 半导体器件的制造方法、衬底处理装置及记录介质 |
JP6905634B2 (ja) * | 2018-02-23 | 2021-07-21 | 株式会社Kokusai Electric | クリーニング方法、半導体装置の製造方法、基板処理装置、及びプログラム |
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US20040101622A1 (en) * | 2002-11-20 | 2004-05-27 | Park Young Hoon | Method of depositing thin film using aluminum oxide |
JP2007046134A (ja) * | 2005-08-11 | 2007-02-22 | Tokyo Electron Ltd | 金属系膜形成方法及びプログラムを記録した記録媒体 |
JP2016072587A (ja) * | 2014-10-02 | 2016-05-09 | 株式会社日立国際電気 | 半導体装置の製造方法、基板処理装置およびプログラム |
JP2017152672A (ja) * | 2016-02-25 | 2017-08-31 | 東京エレクトロン株式会社 | 成膜方法及び成膜システム |
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US20200411330A1 (en) | 2020-12-31 |
JP7065178B2 (ja) | 2022-05-11 |
CN111868300A (zh) | 2020-10-30 |
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