WO2005034220A1 - 気相成長方法および気相成長装置 - Google Patents
気相成長方法および気相成長装置 Download PDFInfo
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- WO2005034220A1 WO2005034220A1 PCT/JP2004/014201 JP2004014201W WO2005034220A1 WO 2005034220 A1 WO2005034220 A1 WO 2005034220A1 JP 2004014201 W JP2004014201 W JP 2004014201W WO 2005034220 A1 WO2005034220 A1 WO 2005034220A1
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- Prior art keywords
- substrate
- flow path
- vapor phase
- growth
- substrate holding
- Prior art date
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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
- C23C16/52—Controlling or regulating the coating process
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- 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
- C23C16/45587—Mechanical means for changing the gas flow
- C23C16/45589—Movable means, e.g. fans
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- C—CHEMISTRY; METALLURGY
- C30—CRYSTAL GROWTH
- C30B—SINGLE-CRYSTAL GROWTH; UNIDIRECTIONAL SOLIDIFICATION OF EUTECTIC MATERIAL OR UNIDIRECTIONAL DEMIXING OF EUTECTOID MATERIAL; REFINING BY ZONE-MELTING OF MATERIAL; PRODUCTION OF A HOMOGENEOUS POLYCRYSTALLINE MATERIAL WITH DEFINED STRUCTURE; SINGLE CRYSTALS OR HOMOGENEOUS POLYCRYSTALLINE MATERIAL WITH DEFINED STRUCTURE; AFTER-TREATMENT OF SINGLE CRYSTALS OR A HOMOGENEOUS POLYCRYSTALLINE MATERIAL WITH DEFINED STRUCTURE; APPARATUS THEREFOR
- C30B25/00—Single-crystal growth by chemical reaction of reactive gases, e.g. chemical vapour-deposition growth
- C30B25/02—Epitaxial-layer growth
- C30B25/14—Feed and outlet means for the gases; Modifying the flow of the reactive gases
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- C—CHEMISTRY; METALLURGY
- C30—CRYSTAL GROWTH
- C30B—SINGLE-CRYSTAL GROWTH; UNIDIRECTIONAL SOLIDIFICATION OF EUTECTIC MATERIAL OR UNIDIRECTIONAL DEMIXING OF EUTECTOID MATERIAL; REFINING BY ZONE-MELTING OF MATERIAL; PRODUCTION OF A HOMOGENEOUS POLYCRYSTALLINE MATERIAL WITH DEFINED STRUCTURE; SINGLE CRYSTALS OR HOMOGENEOUS POLYCRYSTALLINE MATERIAL WITH DEFINED STRUCTURE; AFTER-TREATMENT OF SINGLE CRYSTALS OR A HOMOGENEOUS POLYCRYSTALLINE MATERIAL WITH DEFINED STRUCTURE; APPARATUS THEREFOR
- C30B25/00—Single-crystal growth by chemical reaction of reactive gases, e.g. chemical vapour-deposition growth
- C30B25/02—Epitaxial-layer growth
- C30B25/16—Controlling or regulating
- C30B25/165—Controlling or regulating the flow of the reactive gases
Definitions
- the present invention relates to a vapor phase growth method and a vapor phase growth apparatus, and more particularly to a vapor phase growth method and a vapor phase growth apparatus for forming a uniform epitaxial growth layer.
- FIG. 6 shows an example of a conventionally known MOCVD (Metal Organic Chemical Vapor Deposition) apparatus.
- MOCVD Metal Organic Chemical Vapor Deposition
- This MOCVD apparatus is generally called a horizontal MOCVD apparatus because the source gas flows horizontally in the flow path in the horizontal direction.
- the horizontal MOCVD apparatus has a reaction chamber 2 configured by a rectangular parallelepiped chamber 1 and a flow path 5 penetrating the reaction chamber 2.
- the flow path 5 has a gas supply port 3 at one end and a gas discharge port 4 at the other end.
- An opening 6 is formed substantially at the center of the channel, and a susceptor 9 is provided in the opening 6.
- the susceptor 9 has a substrate holding member 8 for holding a substrate 7 to be processed. Further, a substrate heater 10 for heating the substrate 7 to be processed is provided below the susceptor 9.
- the raw material gas 15 that has passed over the substrate to be processed 7 is discharged from the gas discharge port 4.
- the raw material gas 15 flowing in the flow path 5 is heated near the substrate 7 on the high-temperature susceptor 9 by The flow rate and temperature of the source gas 15 are controlled so that the flow and the temperature of the source gas 15 are spatially uniform and the flow of the source gas 15 is laminar without eddies and turbulence. Ingenuity is required for the configuration.
- the flow of the raw material gas 15 near the substrate 7 to be processed greatly changes depending on the relative positional relationship between the surface 21 of the substrate holding member 8 and the bottom surface 20 on the substrate holding side in the flow path 5, and the uniformity of the thin film Since the accuracy of the relative positional relationship is required to be less than 0.1 mm, positioning accuracy is a very important issue.
- a heating means for preheating a source gas is provided near the susceptor on the upstream side of the susceptor, and a heating means is provided.
- a means for returning the turbulent source gas to a laminar flow by the rising airflow to make the source gas have a laminar flow on the substrate is disclosed.
- a heating means is provided downstream of the susceptor, close to the susceptor. Is also effective (see Patent Document 2).
- Patent Document 1 Japanese Patent No. 3338884
- Patent Document 2 Japanese Patent Application Laid-Open No. 5-283339
- Patent Document 3 JP-A-11-67670
- Patent Document 4 JP-A-5-175141
- Patent Document 5 JP-A-2000-114180
- a uniform flow of the source gas near the substrate to be processed is important for realizing high-quality crystal growth.
- the components are positioned with high precision, and the assembly is performed so that an ideal flow of source gas is obtained.
- the temperature of a substrate to be processed is changed during a crystal growth process in order to continuously form films having different characteristics. Is being done.
- the temperature of the substrate 7 to be processed is changed by changing the power supplied to the substrate heater 10.
- the substrate heater 10 By heating, the substrate heater 10, the substrate 7 and the susceptor 9,
- the peripheral components such as the substrate holding member 8 and the flow path 5, all the temperatures change.
- almost no component is made of the same material, and each component has its own coefficient of linear expansion.
- each component has various dimensions, and further, the location to be fixed relative to other components is also different.
- the amount and direction of the dimensional change due to a certain temperature change vary depending on the components. Therefore, at a certain temperature of the substrate 7 to be processed, as described in the background art, the accuracy of the relative positional relationship between the surface 21 of the substrate holding member 8 and the bottom surface 20 on the substrate holding side in the flow path 5 is reduced to 0. Even if the assembly is performed precisely so as to be 1 mm or less, at another temperature of the substrate 7 to be processed, It cannot be maintained.
- FIG. 6 showing a certain temperature state
- the relative positional relationship between the surface 21 of the substrate holding member 8 and the bottom surface 20 on the substrate holding side in the flow path 5 is located on the same plane.
- FIG. 7 showing a state in which the temperature of the substrate 7 has risen
- the amount of heat generated from the substrate heater 10 has increased, and the susceptor 9 and the substrate holding member 8 have been thermally expanded.
- the flow of the gas 15 generates a turbulence that starts near the upstream side of the susceptor 9.
- the positional relationship between the components ideally set at one substrate temperature is not maintained at another substrate temperature. Therefore, there is a problem that an ideal gas flow state required for a vapor phase growth apparatus cannot be continuously maintained in a crystal growth processing process having a plurality of substrate temperatures to be processed.
- the atmospheric pressure (internal pressure) inside the reaction chamber is also changed during a processing process for performing crystal growth.
- the chamber constituting the reaction chamber is deformed due to a change in the atmospheric pressure inside the reaction chamber, and the positional relationship between the internal components changes. Therefore, as in the case where the temperature of the substrate to be processed changes, the problem that the ideal gas flow state required for the vapor phase growth apparatus cannot be maintained even in the processing process in which the pressure inside the reaction chamber is changed. is there.
- An object of the present invention is to provide a vapor phase growth method and a vapor phase growth apparatus for forming a highly uniform epitaxial layer by finely adjusting a dynamic state during a manufacturing process. .
- the vapor phase growth apparatus of the present invention is an apparatus for forming a thin film on a substrate with a source gas in a reaction chamber, comprising: a reaction chamber; a flow path for supplying and discharging a source gas to and from the substrate;
- a vapor phase growth apparatus comprising: a substrate holding unit that holds the substrate; a moving unit that relatively moves the substrate holding unit and the flow path; a control unit that controls the moving unit; and a heating unit that heats the substrate.
- the control means measures the relative positions of the flow path and the substrate holder for each growth condition in advance before crystal growth, and stores the measured position data. Based on the position data, so that the change in the relative position between the flow path and the substrate is small. The position of the holding section or the flow path is controlled.
- the vapor phase growth method of the present invention is a growth method using a powerful device, wherein the control means determines the relative positions of the flow path and the substrate holder for each growth condition before crystal growth.
- the measured and measured position data is stored, and based on the set growth conditions and the stored position data, the substrate holding unit or the substrate holding unit is designed to reduce the change in the relative position between the flow path and the substrate. Controls the position of the flow path.
- FIG. 1 is a schematic diagram illustrating a horizontal MOCVD apparatus to which the present invention is applied.
- FIG. 2 is a schematic diagram illustrating a state in which a substrate to be processed is heated to a first temperature in a first embodiment in a horizontal MOCVD apparatus to which the present invention is applied.
- FIG. 3 In a horizontal MOCVD apparatus to which the present invention is applied, a state after a substrate to be processed is heated to a first temperature in a first embodiment, and a position is adjusted by operating a moving unit is described.
- FIG. 4 is a schematic diagram illustrating a state after changing the internal pressure of a reaction chamber in a second embodiment in a horizontal MOCVD apparatus to which the present invention is applied.
- FIG. 5 is a schematic diagram illustrating a state after the internal pressure of the reaction chamber is changed and the moving means is operated to adjust the position in the second embodiment in the horizontal MOCVD apparatus to which the present invention is applied.
- FIG. 6 is a schematic diagram illustrating a conventional horizontal MOCVD apparatus.
- FIG. 7 is a schematic diagram illustrating a conventional horizontal MOCVD apparatus.
- FIG. 8 is a schematic diagram illustrating a configuration of a control unit according to the present invention.
- FIG. 1 shows a typical example of the vapor phase growth apparatus of the present invention.
- This apparatus is typified by a horizontal MOCVD apparatus or the like, and forms a thin film on the substrate 7 by using a source gas 15.
- the apparatus includes a reaction chamber 2, a flow path 5 for supplying and discharging the source gas 15 onto the substrate 7, a substrate holding unit, and a moving unit 12 for relatively moving the substrate holding unit or the flow path.
- a control means 13 for controlling the moving means 12 and a heating means 10 for heating the substrate.
- the control means 13 measures the relative positions of the flow path and the substrate holder for each growth condition in advance before crystal growth, and stores the measured position data.
- the position of the substrate holding unit or the flow path is controlled based on the position data so that the change in the relative position between the flow path and the substrate is reduced. Therefore, according to the present apparatus, the change in the relative position between the flow path and the substrate is reduced in accordance with the growth conditions such as the heating temperature of the substrate or the internal pressure of the reaction chamber set during the vapor phase growth. Therefore, the source gas easily forms a laminar flow on the substrate, and a substantially uniform epitaxy growth layer can be formed.
- the bottom surface 20 on the substrate holding side in the flow path 5 and the crystal growth surface 22 of the substrate 7 are substantially flush with each other.
- the position of the substrate holding portion or the flow path is adjusted.
- substantially the same plane means not only the case where the surfaces are completely the same, but also the case where the source gas easily forms a laminar flow on the substrate, and a substantially uniform epitaxy growth layer can be formed. In some cases, the planes are substantially the same.
- a deviation between the bottom surface 20 on the substrate holding side in the flow path 5 and the crystal growth surface 22 of the substrate 7 between a force of 100 ⁇ m and 200 ⁇ m is appropriate for forming a uniform epitaxial growth layer. If, the state is defined as substantially the same plane.
- the present invention in order to perform a more advanced crystal growth, an aspect in which the growth conditions are changed during the crystal growth processing process, that is, when the crystal growth conditions are 2 or more. Also in this case, turbulence on the substrate can be suppressed, and an ideal gas flow state can be ensured. Furthermore, among various growth conditions, the heating temperature of the substrate or the internal pressure in the reaction chamber has a large effect on the change in the relative positional relationship between the flow path and the substrate, and therefore, should be included in the set growth conditions. Preferred,. When the position of the substrate holding unit is controlled after the apparatus has reached the set conditions, if the clearance between the substrate holding unit and the flow path is small, the substrate holding unit may come into contact with the flow path.
- the process is completed before the growth conditions are reached.
- the control is completed before the set growth condition is reached.
- the position control is completed in synchronization with the timing to reach the set condition.
- Crystal growth can be started after the reaction chamber reaches the set conditions.However, for example, the legs of the substrate holder are far from the reaction chamber, and heat conduction is slow, so the substrate holder remains stationary. It may take a lot of time to reach the state. Therefore, from the viewpoint of increasing the operation efficiency of the apparatus, it is preferable that the position of the substrate holding unit is controlled even after the set growth conditions are reached.
- the position data contained in the control means is based on the relative position of the flow path and the substrate holding unit under various crystal growth conditions such as the heating temperature of the substrate and the internal pressure of the reaction chamber before crystal growth. This is data obtained by measuring the position, and the relative position between the substrate holding unit and the flow path can be represented by measuring the position of the flange for convenience.
- the position data can be stored in the form of a reference table.
- the control according to the present invention includes not only automatic control but also manual control by an operator. You can also save in the form.
- Table 15 shows an example in which relative position data between the flow path and the substrate holding unit is represented by a comparison table.
- Table 1 shows the flange position data when the heating temperature of the substrate, the internal pressure of the reaction chamber, and the type of the source gas were set as the growth conditions.
- Table 2 shows an example where the growth conditions shown in Table 1 are combined! /
- a matrix-like control table as shown in Table 3 is advantageous.
- various growth conditions are specified in the first column and the first row.
- the amount of movement (hereinafter also referred to as “difference”) ab is described in a column where the column of the growth condition a in the first row and the row of the growth condition b in the first column intersect.
- the difference ba when changing from the growth condition b to the growth condition a is described in the column where the row of the growth condition b in the first row and the row of the growth condition a in the first column intersect.
- the position is changed a plurality of times during the transition to the set temperature, or even after the start of film formation, the position is changed a plurality of times in order to cope with thermal expansion of the legs of the susceptor.
- Table 4 which lists the elapsed time N after the setting change in the column of 1 row and 1 column.
- Table 5 shows the conditions for changing from growth condition a to growth condition b. The difference ab when the conditions are changed and the difference ac when changing from the growth condition a to the growth condition c are listed according to the elapsed time (minutes) after the change in the conditions. Tables can be used.
- the vapor phase growth method of the present invention is a growth method performed by using a powerful device, and the control means controls the relative positions of the flow path and the substrate holder for each growth condition before crystal growth.
- the measured position data is stored and the measured position data is stored.
- the substrate is changed so that the change in the relative position between the flow path and the substrate becomes small.
- the position of the holding section or the flow path is controlled. According to the method of the present invention, a highly uniform epitaxial growth layer can be formed.
- vapor phase growth was performed using a horizontal MOCVD apparatus shown in FIG. 1 to form a thin film on a substrate using a source gas in a reaction chamber.
- This vapor phase growth apparatus has a reaction chamber 2 composed of a rectangular parallelepiped chamber 1, and a flow path 5 that penetrates through the reaction chamber 2 and supplies and discharges a source gas 15 onto a substrate 7 to be processed 7.
- the flow path 5 is provided with a gas supply port 3 at one end and a gas discharge port 4 at the other end, and an opening 6 is formed substantially at the center of the flow path 5.
- the opening 6 is provided with a substrate holding member 8 for placing and holding the substrate 7 to be processed and a susceptor 9 for supporting the substrate holding member 8.
- a substrate heater 10 for heating the substrate 7 to be processed is provided below the susceptor 9.
- a sensor 17 that is installed and detects the temperature of the substrate 7 to be processed is installed inside the substrate holding member 8.
- the positional relationship between the components is set such that the bottom surface 20 on the substrate holding side in the flow path 5 and the surface 21 of the substrate holding member 8 are located on substantially the same plane. Further, by taking the thickness of the substrate to be processed into consideration, the substrate 7 to be processed is placed in the recess formed in the substrate holding member 8, so that the crystal growth surface 22 of the substrate 7 to be processed also It is installed so as to be located on substantially the same plane as the bottom surface 20 on the substrate holding side and the surface 21 of the substrate holding member 8. A flange 14 supporting the susceptor 9 and the substrate heater 10 is connected to a chamber 1 constituting the reaction chamber 2 via a bellows 11 which can be extended and contracted.
- the moving means 12 is provided outside the chamber 1.
- the moving means 12 has a main body member 12a, a flange contact member 12b, a chamber contact member 12c, and a driving means (not shown) for driving these.
- a motor is used as the driving means, but other means can be used.
- the flange 14 contacts the flange contact member 12b at the flange contact portion 12b1, and the chamber 1 contacts the chamber contact member 12c at the chamber contact portion 12cl.
- the flange contact member 12b can move relative to the main body member 12a, and the chamber contact member 12c can move relative to the main body member 12a.
- the configuration of these relative movements can be a combination using a ball screw / nut combination, a guide / guide rail combination, or a combination using a hydraulic piston.
- the flange 14 When the main body member 12a is moved upward with respect to the chamber contact member 12c, the flange 14 is relatively close to the chamber 1.
- the flange contact member 12b may be moved upward with respect to the main body member 12a, or the main body member 12a may be moved upward with respect to the chamber contact member 12c, and the flange contact member 12b may be moved with respect to the main body member 12a.
- the upward movement may be performed together, or the upward movement of the flange contact member 12b with respect to the main body member 12a may be performed simultaneously with the downward movement of the main body member 12a with respect to the chamber contact member 12c.
- the moving means 12 can move the flange 14 in the vertical direction in FIG. 1, that is, in the direction perpendicular to the substrate surface.
- FIG. 8 shows a system configuration of the control means 13 for controlling the moving means 12.
- the control means 13 contains at least position data of the flange 14 with respect to the set temperature of the substrate heater 10.
- the position data is a comparison table 16 as shown in FIG.
- Such a comparison table 16 is stored in the storage unit 18 of the control unit 13 or the like.
- the control means 13 includes an input means 30, a storage means 18, a temperature control means 31, a CPU 32 and the like.
- the input means 30 inputs one or more of film forming conditions including a set temperature.
- the storage unit 18 stores the film forming conditions such as the input set temperature, stores the detected temperature detected by the sensor, and stores the position of the flange 14 from which the reference surface force is also read. .
- the temperature control means 31 controls the temperature of the substrate heater with respect to the set temperature.
- the CPU 32 performs functions such as accessing the storage means and reading out the contrast of the position of the flange 14 according to the temperature information.
- the input means 30 a touch panel, a keyboard, a number selection dial, or the like can be used. In this embodiment, a keyboard is used.
- the relative positions of the flow path and the substrate holding unit are measured in advance for various growth conditions such as the heating temperature of the substrate, and the measured position data is recorded in a comparison table and stored. did. Specifically, at the temperature of each substrate heater 10, the position of the flange 14 is adjusted so that the bottom surface 20 on the substrate holding side in the flow path 5 and the crystal growth surface 22 of the substrate are positioned substantially on the same plane. Was adjusted, the position of the flange 14 at that time was measured, and the position data was described in Comparative Table 16. In order to adjust the bottom surface 20 on the substrate holding side in the flow path 5 and the crystal growth surface 22 of the substrate to be located on substantially the same plane, the laser beam is applied to the substrate holding side in the flow path 5. Irradiation was performed on each of the bottom surface 20 and the substrate growth surface 22, and the relative position information measured by observing the reflected beam was used.
- the susceptor 9 When viewed in the up-down direction, the susceptor 9 has a free end on the substrate mounting side and is fixed to the flange 14 on the opposite side.
- the flange 14 is fixed to the leg 9a of the susceptor 9, and the bellows 11 Is fixed to one end 11a.
- the other end l ib of the bellows 11 near the substrate side is fixed to a port 19 protruding from below the chamber 1. Inside the port 19, the leg 9a of the susceptor 9 is arranged.
- the flow path 5 and the substrate holding member 8 have an arrangement and a configuration relationship that are very close as a linear distance but far from each other in a fixed relation force path.
- the susceptor 9 having a long leg 9a and having a large coefficient of thermal expansion, as shown in FIG.
- the surface 21 of the substrate holding member 8 protrudes from the bottom surface 20 on the substrate holding side in the path 5. Therefore, in order for the surface 21 of the substrate holding member 8 to be substantially flush with the bottom surface 20 on the substrate holding side in the flow path 5, the bellows must be extended, and the flange 14 must be Need to be remote to one. This remote control was carried out by the transportation means 12, and the position data of the flange 14 was entered in a comparison table and stored.
- a manufacturing process consisting of a first substrate temperature and a second substrate temperature was selected as a growth condition.
- the substrate 7 to be processed is transported to the substrate holding member 8 at room temperature, and the substrate is placed in the concave portion of the substrate holding member 8, and the crystal growth surface 22 of the substrate and the flow path 5
- the bottom surface 20 on the substrate holding side and the surface 21 of the substrate holding member 8 were substantially flush with each other.
- the growth condition of the combination stored in the storage unit 18 was read out by the CPU 32.
- the growth condition of the combination is a large two-step force, and the CPU 32 transmits the first set temperature information to the temperature control means 31.
- the temperature control means 31 supplies power to the substrate heating heater 10, Started taking in temperature information from.
- the storage means 18 stores the temperature information from the sensor every moment.
- the temperature control means 31 controls the amount of power input to the substrate heater 10 by comparing the first set temperature with the detected temperature information to increase the temperature of the substrate 7 to the first set temperature. Warm and maintain that temperature.
- the CPU of the control means 13 accesses the comparison table 16 stored in the storage means 18 and reads out the flange position information for the first set temperature from the comparison table. After that, the read flange position information is compared with the initial flange position information in the normal temperature state, and the difference (movement amount of the substrate holding unit) is instructed to the driving unit 12d, and the flow path and the substrate are read.
- the main body member and the like were moved so that the change in the relative position of the body became small. That is, as shown in FIG. 3, by driving the moving means and moving the flange downward, the bottom surface on the substrate holding side in the flow path and the crystal growth surface of the substrate are positioned substantially on the same plane. I was able to make adjustments.
- a first source gas 15 is introduced into the flow path 5 from the gas supply port 3, and is supplied to the substrate heater 10 provided below the susceptor 9.
- a first thin film was formed on the substrate 7 to be processed by promoting the chemical reaction for film formation on the substrate 7 to be processed.
- the source gas 15 passed over the substrate 7 to be processed was discharged from the gas discharge port 4.
- the temperature of the substrate to be processed was changed to the second temperature.
- the temperature of the peripheral components also changes, so the amount of thermal expansion of each peripheral component changes.
- the control means 13 reads the positional information of the flange with respect to the temperature of the built-in substrate heater again according to the comparison table 16, and uses the read positional information of the second flange. Then, compared with the position information of the first flange, the CPU instructed the driving means 12d to operate the difference (movement amount of the substrate holding unit). After the flange was moved to reach a set temperature, a second source gas was introduced into the inside of the apparatus to perform a second film formation.
- the bottom surface on the substrate holding side in the flow path and the crystal growth surface of the substrate are positioned substantially on the same plane.
- the substrate is moved so that the bottom surface on the substrate holding side in the flow path and the crystal growth surface of the substrate are adjusted to be substantially on the same plane.
- a similar effect can be obtained by moving the channel side.
- the present embodiment shows a case where the displacement between the substrate and the flow path occurs in a direction perpendicular to the substrate surface due to thermal expansion.
- the relative position between the substrate and the flow path should be maintained by moving the substrate or the flow path as in the case of vertical position. Can be.
- a production process consisting of the internal pressure of the first reaction chamber and the internal pressure of the second reaction chamber was selected as the growth conditions.
- the control means 13 measures and stores the position data of the flange 14 with respect to various internal pressures of the reaction chamber 2 before crystal growth in advance, so that the force position data is Based on the set growth conditions and the stored position data based on the stored comparison table 16, as shown in FIG.
- the moving means 12 is driven, the flange 14 is moved upward, and the flow path and the substrate are moved.
- the position of the substrate holding unit was controlled so that the change in the position relative to the position became small.
- the first film forming process was performed as in the example.
- the reaction chamber 2 was changed to the second internal pressure in order to perform the second film formation.
- the chamber 1 constituting the reaction chamber 2 is deformed by the pressure difference from the atmospheric pressure, and the positional relationship between the components inside the chamber changes again.
- the bottom surface on the substrate holding side in the flow path 5 adjusted when the internal pressure of the reaction chamber 2 is the first internal pressure, and the crystal growth surface of the substrate 7 to be processed are The condition of being located on substantially the same plane is no longer satisfied. Therefore, as shown in FIG. 8, the control means 13 drives the moving means based on the set internal pressure of the reaction chamber 2 and the stored position data of the flange, moves the flange, and connects the flow path with the flow path.
- the position of the substrate holding unit was controlled so that the change in the position relative to the substrate was small.
- the bottom surface on the substrate holding side in the flow path and the crystal growth surface of the substrate to be processed are positioned substantially on the same plane.
- a second film formation was performed in the same manner as in Example 1. Therefore, even in an advanced process in which the vapor phase growth conditions were changed, a highly uniform epitaxial growth layer could be formed.
- the substrate side is moved so that the bottom surface on the substrate holding side in the flow path and the crystal growth surface of the substrate are adjusted to be substantially on the same plane.
- a similar effect can be obtained by moving the channel side.
- the present embodiment shows a case where a positional shift between the substrate and the flow channel occurs in a direction perpendicular to the substrate surface due to a pressure change.
- the relative position between the substrate and the flow path must be maintained by moving the substrate or the flow path, as in the case of vertical displacement. Can be.
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Abstract
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US10/575,187 US20070134413A1 (en) | 2003-10-06 | 2004-09-29 | Vapor deposition method and vapor deposition apparatus |
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JP2003347134A JP3638936B1 (ja) | 2003-10-06 | 2003-10-06 | 気相成長方法および気相成長装置 |
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US (1) | US20070134413A1 (ja) |
JP (1) | JP3638936B1 (ja) |
CN (1) | CN1864246A (ja) |
TW (1) | TWI246118B (ja) |
WO (1) | WO2005034220A1 (ja) |
Families Citing this family (8)
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JP2007201098A (ja) * | 2006-01-25 | 2007-08-09 | Sharp Corp | 気相成長装置および気相成長方法 |
WO2010053866A2 (en) * | 2008-11-07 | 2010-05-14 | Asm America, Inc. | Reaction chamber |
KR101044913B1 (ko) * | 2009-07-14 | 2011-06-28 | 신웅철 | 배치형 원자층 증착 장치 |
CN102330147B (zh) * | 2010-07-14 | 2015-11-25 | 郭志凯 | 一种硅片生产外延设备及其系统 |
JP6157942B2 (ja) * | 2013-06-13 | 2017-07-05 | 株式会社ニューフレアテクノロジー | 気相成長装置および気相成長方法 |
DE102017130551A1 (de) * | 2017-12-19 | 2019-06-19 | Aixtron Se | Vorrichtung und Verfahren zur Gewinnnung von Informationen über in einem CVD-Verfahren abgeschiedener Schichten |
CN113862780A (zh) * | 2021-08-16 | 2021-12-31 | 西安电子科技大学芜湖研究院 | 一种应用于mocvd设备的可伸缩基座 |
CN114318543A (zh) * | 2021-12-28 | 2022-04-12 | 江苏布里其曼科技股份有限公司 | 半极性氮化镓外延层结构制造系统及方法 |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
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JPH0377314A (ja) * | 1989-08-21 | 1991-04-02 | Daiwa Handotai Sochi Kk | Mo―cvd法による半導体製造装置 |
JP2004186211A (ja) * | 2002-11-29 | 2004-07-02 | Nippon Sanso Corp | 気相成長装置 |
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US6204174B1 (en) * | 1997-11-25 | 2001-03-20 | Applied Materials, Inc. | Method for high rate deposition of tungsten |
US20010001384A1 (en) * | 1998-07-29 | 2001-05-24 | Takeshi Arai | Silicon epitaxial wafer and production method therefor |
US6153261A (en) * | 1999-05-28 | 2000-11-28 | Applied Materials, Inc. | Dielectric film deposition employing a bistertiarybutylaminesilane precursor |
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- 2003-10-06 JP JP2003347134A patent/JP3638936B1/ja not_active Expired - Fee Related
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2004
- 2004-09-29 WO PCT/JP2004/014201 patent/WO2005034220A1/ja active Application Filing
- 2004-09-29 US US10/575,187 patent/US20070134413A1/en not_active Abandoned
- 2004-09-29 CN CN200480029082.7A patent/CN1864246A/zh active Pending
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Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH0377314A (ja) * | 1989-08-21 | 1991-04-02 | Daiwa Handotai Sochi Kk | Mo―cvd法による半導体製造装置 |
JP2004186211A (ja) * | 2002-11-29 | 2004-07-02 | Nippon Sanso Corp | 気相成長装置 |
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TWI246118B (en) | 2005-12-21 |
JP3638936B1 (ja) | 2005-04-13 |
JP2005116689A (ja) | 2005-04-28 |
TW200531156A (en) | 2005-09-16 |
US20070134413A1 (en) | 2007-06-14 |
CN1864246A (zh) | 2006-11-15 |
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