WO2022201853A1 - 積層体製造装置及び自己組織化単分子膜の形成方法 - Google Patents
積層体製造装置及び自己組織化単分子膜の形成方法 Download PDFInfo
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Definitions
- the present invention relates to a laminate manufacturing apparatus and a method for forming a self-assembled monolayer.
- SAM film a self-assembled monolayer
- polar groups hydrophilic groups
- metal alkoxide-based materials, organic silane-based materials, and organic phosphonic acid-based materials are self-assembled to form a single layer. form a film.
- metal alkoxide-based materials and organic silane-based materials products after hydrolysis reaction are accumulated by hydrogen bonding with polar groups on the substrate surface, and are covalently bonded by dehydration condensation reaction.
- organic phosphonic acid-based material it forms a salt with a polar group on the substrate surface of a basic or neutral oxide, and is covalently bonded by a dehydration condensation reaction.
- the SAM film manufacturing method can be broadly divided into a wet process and a dry process.
- the former is called a sol-gel method, and employs a method using an acid or base catalyst in an alcohol-based organic solvent.
- An alcohol solution in which the metal alkoxide or alkoxyorganosilane is dissolved and an alcohol solution in which water is dissolved are prepared separately, the catalyst is dissolved in the aqueous solution, and the two are mixed to promote the hydrolysis reaction.
- the coating is applied by a dip coating method, a spray coating method, or a spin coating method, and the solvent is evaporated to allow the dehydration condensation reaction to proceed.
- the dry process is based on vacuum technology and discharge technology, and can form SAM films without using solvents or catalysts.
- Hydrophilic groups such as hydroxyl groups and carboxyl groups are added to the substrate surface by plasma treatment with water, oxygen, or the like using a vacuum plasma device, and subsequently, a vapor phase metal alkoxide material or an alkoxyorganosilane material is supplied. , it is possible to proceed the hydrolysis dehydration condensation reaction.
- Patent Document 1 a polyethylene terephthalate (PET) substrate is irradiated with mixed gas plasma of tetramethoxysilane and oxygen by a high-frequency plasma device to form a silicon dioxide film having hydroxyl groups on the surface, and then the silicon dioxide film is formed.
- a PET substrate with octadecyltrimethoxysilane was placed in a 100° C. oven for 5 hours to form a hydrophobic SAM film.
- Patent Document 2 a polyethylene terephthalate (PET) substrate is irradiated with oxygen gas plasma by a high-frequency plasma device to form unevenness on the surface of the PET substrate, and at the same time, hydroxyl groups, which are adsorption groups, are added, and then tetraethoxysilane and It is described that a hydrophilic SAM film is formed by irradiating mixed gas plasma of oxygen.
- PET polyethylene terephthalate
- Patent Document 3 describes, as an apparatus for producing a SAM film, an apparatus that has a chamber having electrodes and that introduces Si—H bonds onto the surface while applying a direct current to form a SAM film of a vinyl derivative. ing.
- Patent Document 4 discloses an apparatus for forming a SAM film after performing remote processing using plasma from a high-frequency plasma source for the purpose of cleaning the surface of a sample substrate before forming a SAM film on the sample substrate. is described.
- Patent Document 2 plasma processing that performs etching to form unevenness on the sample surface has the problem of promoting deterioration of the base material.
- Patent Document 3 describes that the plasma treatment as a pretreatment for the SAM film forming process is performed in a separate apparatus, which poses a problem of man-hours associated with the movement of the sample base material.
- the present invention forms a high-density SAM film by a dry process, and can easily carry out an integrated film-forming process from substrate pretreatment to completion of high-density SAM film formation. and to provide a method for forming a self-assembled monolayer.
- a laminate manufacturing apparatus is a laminate manufacturing apparatus for forming a self-assembled monomolecular film on a film forming surface of a substrate, comprising a vacuum chamber for accommodating the substrate and a gas for introducing gas into the vacuum chamber.
- a plasma atmosphere is formed by the plasma generation unit, provided with an introduction port and a plasma generation unit for forming a plasma atmosphere in the vacuum chamber, in a state in which an evaporation source that imparts a hydrophilic group is supplied to the vacuum chamber.
- a surface hydrophilization mode in which the film-forming surface of the substrate is modified by and the film-forming surface is hydrophilized, and a self-assembled monolayer is formed in a vacuum chamber in a vacuum against the substrate with the film-forming surface being hydrophilized.
- an evaporation source of the precursor material of the self-assembled monolayer is supplied to form a self-assembled monolayer on the hydrophilic film-forming surface. and a self-organizing mode for forming a molecular film.
- a method for forming a self-assembled monolayer according to the present invention is a method for forming a self-assembled monolayer on the surface of a substrate, comprising a step (A) of placing the substrate in a vacuum chamber; a step (B) of supplying an evaporation source that imparts hydrophilic groups to the substrate surface inside the vacuum chamber, generating plasma of the evaporation source by converting the inside of the vacuum chamber into plasma, and hydrophilizing the substrate surface; After (B), the evaporation source of the precursor material of the self-assembled monolayer is supplied into the vacuum chamber while the evaporation source that promotes hydrolysis of the precursor material of the self-assembled monolayer is supplied. and forming a self-assembled monolayer on the substrate surface (C), wherein the steps (B) and C) are performed without opening the vacuum chamber to the atmosphere. and
- the surface of a substrate immediately before forming a SAM film on the substrate is subjected to a vacuum plasma treatment, thereby imparting hydrophilic groups such as hydroxyl groups at a high density without forming unevenness on the surface. Furthermore, it is possible to form a high-density SAM film before the hydrophilicity of the substrate changes with time due to the hydrophilic groups attached to the substrate.
- the step of forming the SAM film in the vacuum chamber can be performed immediately after the hydrophilic treatment of the substrate with high-frequency vacuum plasma. It is easy to activate the body, and it is possible to promote the dehydration condensation reaction with the hydrophilic group provided on the substrate.
- the SAM film is formed by a dry process, and a consistent film formation process from pretreatment of the substrate to completion of forming the SAM film at high density can be easily performed, thereby reducing manufacturing costs. It is possible to form the SAM film simply and easily.
- FIG. 1 It is a schematic diagram which shows the whole structure of the laminated body manufacturing apparatus for implementing laminated body manufacture which concerns on embodiment of this invention. It is a sectional view of a vacuum chamber of a layered product manufacturing device for carrying out layered product manufacture concerning an embodiment of the present invention. It is a mimetic diagram showing the whole composition of a layered product manufacturing device for carrying out layered product manufacture of modification 1 concerning an embodiment of the present invention. It is a mimetic diagram showing the whole composition of a layered product manufacturing device for carrying out layered product manufacture of modification 2 concerning an embodiment of the present invention. It is a mimetic diagram showing the whole composition of a layered product manufacturing device for carrying out layered product manufacture of modification 3 concerning an embodiment of the present invention.
- FIG. 1 is a schematic diagram showing the overall configuration of the laminate manufacturing apparatus according to the embodiment.
- FIG. 2 is sectional drawing of the vacuum chamber of the laminated body manufacturing apparatus which concerns on embodiment.
- a laminate manufacturing apparatus 1 is an apparatus for forming a SAM film on a film forming surface of a substrate.
- a substrate S having at least two surfaces is used as the substrate.
- Materials constituting the substrate S are not particularly limited, and examples thereof include inorganic materials such as SiO2 (glass), Si, alumina, ceramics and sapphire, and organic materials such as plastics and films.
- the substrate S may be a substrate subjected to a WET cleaning process.
- the laminate manufacturing apparatus 1 includes a vacuum chamber 2 that accommodates a substrate S, a lower electrode 3 that also serves as a sample stage for placing the substrate S in the vacuum chamber 2, and an upper electrode 3 that faces the lower electrode 3. It has an electrode 4 , and the lower electrode 3 is connected to a power source 7 for plasma generation.
- the lower electrode 3 serves as the sample stage in FIG. 1
- the upper electrode 4 may also serve as the sample stage, or both the lower electrode 3 and the upper electrode 4 may serve as the sample stage.
- the power supply 7 for plasma generation may use a low frequency power supply, and may use a high frequency power supply.
- a pressure gauge 5 for monitoring the pressure inside the vacuum chamber 2 , an earth 6 and a vacuum pump 9 are connected to the vacuum chamber 2 .
- a gas inlet 10 used for plasma processing, a bubbler 15 for reactant materials required for plasma processing and the SAM film forming process, and a raw material chamber 18 for the SAM film are connected by pipes to form a vacuum chamber 2.
- a gas inlet 10 used for plasma processing, a bubbler 15 for reactant materials required for plasma processing and the SAM film forming process, and a raw material chamber 18 for the SAM film are connected by pipes to form a vacuum chamber 2. has a structure that has been introduced in
- the vacuum chamber 2 in this embodiment has an upper chamber 27 and a lower chamber 28, and the lower chamber 28 has an O-ring 30.
- the upper chamber 27 and the lower chamber 28 are composed of electrically grounded electrical conductors, and the entire inner wall surface of the vacuum chamber 2 serves as a ground potential surface whose potential is grounded. It's becoming The electrical conductors that make up the upper chamber 27 and the lower chamber 28 are metal materials composed of, for example, transition metals such as copper, nickel, and titanium, alloys thereof, and refractory metals such as stainless steel, molybdenum, and tungsten. is.
- the upper chamber 27 has a gas inlet 21 in the upper part thereof, and includes a gas inlet 10 used for plasma processing, a bubbler 15 for reactant substances necessary for the plasma processing and the SAM film forming process, A pipe connected from the raw material chamber 18 of the SAM film is connected to the gas introduction part 21 .
- the lower electrode 3 which also serves as a sample stage, is composed of a current introduction terminal 22 and an electrode stage 23, and an insulating member 26 is arranged around the current introduction terminal 22 and under the electrode stage 23. Also, the current introduction terminal 22 is connected to the high frequency power supply 7 .
- the upper electrode 4 facing the lower electrode 3 has a structure also serving as a gas shower plate 24 .
- the lower chamber 28 has a structure in which an earth ring 25 is provided in a form surrounding the electrode stage 23 .
- the height difference between the electrode stage 23 and the ground ring 25 is preferably approximately 0 mm, and the ground ring 25 is preferably higher than the electrode stage 23 .
- the ground ring 25 is formed so that the distance from the electrode stage 23 is 1 mm or more and 5 mm or less. By forming such a gap, it is possible to control the gas flow and to expand the uniform region of the plasma as much as possible.
- the distance between the ground ring 25 and the electrode stage 23 is less than 1 mm, the distance is too narrow to draw gas sufficiently when drawing gas with a vacuum pump, and in addition, abnormal discharge occurs, resulting in the desired failure. Plasma cannot be generated. Moreover, if the distance between the ground ring 25 and the electrode stage 23 is greater than 5 mm, abnormal discharge occurs between the electrode stage 23 and the ground ring 25, making it impossible to generate a desired uniform plasma.
- the lower chamber 28 has a vacuum exhaust port 29 between the current introduction terminal 22 and the earth ring 25, which is connected to the vacuum pump 9, and has a structure in which the degree of vacuum is adjusted by the exhaust flow control valve 8. have. Therefore, by using the apparatus of the present embodiment, it becomes possible to satisfactorily perform hydrophilization treatment by plasma treatment in the pretreatment process for forming the SAM film.
- a gas used for plasma processing is introduced from a gas inlet port 10, and three systems of a bubbler 15 for reactant substances required for the plasma processing and the SAM film forming process and a raw material chamber 18 for the SAM film are provided. is connected to the gas introduction pipe.
- a piping structure surrounded by a heat insulating material (not shown) or a heater (not shown) is used for the piping of the gas introduction pipe so that the gas does not liquefy.
- the gas used for plasma processing introduced from the gas introduction port 10 is supplied from a gas cylinder (not shown) and introduced into the vacuum chamber 2 via the flow control valve/mass flow controller 11 .
- a gas that imparts hydroxyl groups (OH groups) to the surface of the sample S or a pretreatment gas for the step of imparting OH groups is selected.
- water vapor (H2O), oxygen (O2), argon (Ar), and the like can be used.
- H2O water vapor
- oxygen (O2) oxygen
- Ar argon
- the degree of vacuum is controlled by the exhaust flow control valve 8 and the vacuum pump 9, and the lower electrode 3 and the upper electrode 4 discharge.
- the gas functions as a plasma-generating gas, and the sample S is subjected to a plasma hydrophilization treatment.
- a bubbler 15 into which a vapor source 17, which is a reactant substance necessary for plasma processing and a SAM film forming process, is injected is equipped with a mantle heater 16, and heats the plasma processing.
- the vapor source 17 generates vapor, which is a reactant substance necessary for the deposition process of the SAM film, and supplies it to the vacuum chamber 2 .
- the bubbler 15 is connected to a pipe through which a carrier gas is supplied from a carrier gas introduction port 12 for carrying the vapor of the vapor source 17 through a flow control valve/mass flow controller 13.
- piping is configured with a bypass valve 14 through which a carrier gas can be mixed with the vapor from the bubbler. If no carrier gas is required, the carrier gas may not be supplied.
- vapor source 17 which is a reactant substance necessary for the plasma processing and the SAM film forming process
- an evaporation source that imparts OH groups to the surface of the sample S or an evaporation source that promotes hydrolysis of the precursor of the SAM film is used.
- water (H2O) is exemplified and most used.
- the HO gas water vapor
- the vacuum chamber 2 is evacuated by the flow control valve 8 and the vacuum pump 9 without breaking the degree of vacuum.
- the SAM film raw material chamber 18 into which the SAM precursor material vapor source 20 is injected is provided with a mantle heater 19, and the vapor of the SAM film raw material chamber 18 is generated by heating. and supplied to the vacuum chamber 2.
- the vapor source 20 of the SAM precursor material an evaporation source for dehydration condensation between the OH groups formed by hydrolysis of the precursor material of the SAM film and the OH groups formed on the surface of the sample S, or the SAM precursor material.
- An evaporation source is selected in which the material molecules themselves of the evaporation source are dehydrated and condensed between OH groups formed on the surface of the sample S.
- disilazane-based materials such as hexamethyldisilazane (HMDS), and chlorosilane-based materials, alkoxysilane-based materials, phosphonic acid-based materials, disilazane-based
- HMDS hexamethyldisilazane
- chlorosilane-based materials alkoxysilane-based materials
- phosphonic acid-based materials disilazane-based
- disilazane-based materials such as hexamethyldisilazane (HMDS), and chlorosilane-based materials, alkoxysilane-based materials, phosphonic acid-based materials, disilazane-based
- HMDS hexamethyldisilazane
- chlorosilane-based materials alkoxysilane-based materials
- phosphonic acid-based materials phosphonic acid-based materials
- disilazane-based disilazane-based materials
- the lower electrode 3 and the upper electrode 4 may or may not discharge.
- the vapor source 20 of the SAM precursor material is a chlorosilane-based material, an alkoxysilane-based material, or a disilazane-based material
- residual components of the plasma during discharge and HO undergo a hydrolysis reaction with the SAM precursor material.
- the OH groups attached to the sample surface and the OH groups of the adjacent SAM precursor are self-organized by hydrogen bonding, and then the dehydration condensation reaction proceeds to form the SAM film.
- the vapor source 20 of the SAM precursor material is a phosphonic acid material, hydrolysis is not required and the direct dehydration condensation reaction proceeds to form the SAM film.
- the laminate manufacturing apparatus includes a plasma generator that forms a plasma atmosphere in the vacuum chamber, and has modes for executing the following two processes.
- (1) In a state in which an evaporation source that imparts hydrophilic groups is supplied into a vacuum chamber, the film-formed surface of the substrate is modified by a plasma atmosphere formed by a plasma generating unit to make the film-formed surface hydrophilic.
- Surface Hydrophilization Mode (2) A SAM film is formed on a substrate having a hydrophilic surface on which a film is formed, while the inside of the vacuum chamber is in a vacuum and an evaporation source that promotes hydrolysis of the precursor material of the SAM film is supplied.
- a self-assembly mode in which a SAM film is formed on a hydrophilized film-forming surface by supplying an evaporation source of a precursor material of .
- the surface hydrophilization mode and the self-assembly mode are preferably performed in a common vacuum chamber. Thereby, the transition from the surface hydrophilization mode to the self-organization mode can be performed without exposing the vacuum chamber to the atmosphere.
- a load-lock type vacuum chamber that can transport the substrate while maintaining a vacuum state.
- both the evaporation source that imparts hydroxyl groups to the surface of the substrate and the evaporation source that promotes hydrolysis of the precursor material of the self-assembled monolayer are preferably water vapor.
- the water vapor in the self-organization mode may be water vapor remaining in the surface hydrophilization mode.
- hydrophilic groups such as hydroxyl groups can be imparted at a high density. Without exposing the vacuum chamber to the atmosphere, it is possible to form a high-density SAM film on the substrate surface before the hydrophilicity of the substrate changes with time due to the hydrophilic groups attached to the substrate.
- the method for forming a SAM film in the present embodiment includes the step (A) of placing the substrate in a vacuum chamber, supplying an evaporation source for imparting hydrophilic groups to the surface of the substrate in the vacuum chamber, is turned into plasma to generate plasma of the evaporation source to hydrolyze the substrate surface; (C) supplying an evaporation source of a precursor material of the SAM film to form a SAM film on the substrate surface while providing the accelerating evaporation source, wherein steps (B) and (C) are , is performed without opening the vacuum chamber to the atmosphere.
- Modification 1 A laminate manufacturing apparatus 100 as Modification 1 will be described below with reference to FIG. 3 .
- the laminate manufacturing apparatus 100 in Modification 1 is connected to two systems of gas introduction pipes: a bubbler 15 for reactant substances required for plasma processing and a SAM film forming process, and a raw material chamber 18 for the SAM film. 1, and does not have a pipe from the gas introduction port 10 in FIG.
- the gas introduction pipe is surrounded by a heat insulating material (not shown) or a heater (not shown) so that the gas does not liquefy.
- a vapor source 17 which is a reactant substance necessary for the plasma processing and the SAM film forming process, is injected into the bubbler 15.
- the bubbler 15 is equipped with a mantle heater 16 , which generates vapor from a vapor source 17 which is a reactant material required for plasma processing and SAM film formation processes by heating, and supplies the vapor to the vacuum chamber 2 .
- the bubbler 15 is connected to a pipe through which a carrier gas is supplied from a carrier gas introduction port 12 for carrying the vapor of the vapor source 17 through a flow control valve/mass flow controller 13. Instead, piping is configured with a bypass valve 14 through which a carrier gas can be mixed with the vapor from the bubbler. If no carrier gas is required, the carrier gas may not be supplied.
- the vapor source 17 which is a reactant material necessary for the plasma treatment and the SAM film forming process, is an evaporation source that imparts OH groups to the surface of the sample S by the plasma of the vapor source 17, and a hydration of the precursor of the SAM film.
- An evaporation source is selected that promotes decomposition. For example, water (H2O) is exemplified and most used.
- the sample S When the sample S is a material capable of imparting OH groups to the surface only by the plasma treatment of the H2O gas (water vapor), it becomes a configuration that can be used.
- the vacuum chamber 2 is evacuated by the flow control valve 8 and the vacuum pump 9 without breaking the degree of vacuum.
- the hydrolysis reaction of the SAM precursor it does not matter whether the discharge is in progress or after the discharge is stopped.
- the SAM film source chamber 18 into which the SAM precursor material vapor source 20 is injected is provided with a mantle heater 19, which heats to generate vapor in the SAM film source chamber 18. and supplied to the vacuum chamber 2.
- a mantle heater 19 which heats to generate vapor in the SAM film source chamber 18. and supplied to the vacuum chamber 2.
- An evaporation source is selected in which the material molecules themselves of the evaporation source are dehydrated and condensed between OH groups formed on the surface of the sample S.
- disilazane-based materials such as hexamethyldisilazane (HMDS), and chlorosilane-based materials, alkoxysilane-based materials, phosphonic acid-based materials, disilazane-based
- HMDS hexamethyldisilazane
- chlorosilane-based materials alkoxysilane-based materials
- phosphonic acid-based materials disilazane-based
- disilazane-based materials such as hexamethyldisilazane (HMDS), and chlorosilane-based materials, alkoxysilane-based materials, phosphonic acid-based materials, disilazane-based
- HMDS hexamethyldisilazane
- chlorosilane-based materials alkoxysilane-based materials
- phosphonic acid-based materials phosphonic acid-based materials
- disilazane-based disilazane-based materials
- Modification 2 A laminate manufacturing apparatus 200 as Modification 2 will be described below with reference to FIG. 4 .
- the gas used for plasma processing is introduced from the gas inlet port 10, and the bubbler 15 for the reactant substances required for the plasma processing and the SAM film forming process, and the SAM film and a bubbler 35 which is the same as the bubbler 15 for the reactant material required for the plasma processing and SAM film forming process as a bubbler for the raw material of the SAM film. configuration.
- the gas introduction pipe is surrounded by a heat insulating material (not shown) or a heater (not shown) so that the gas does not liquefy.
- the gas used for plasma processing introduced from the gas introduction port 10 is supplied from a gas cylinder (not shown) and introduced into the vacuum chamber 2 via the flow control valve/mass flow controller 11 .
- a gas that imparts hydroxyl groups (OH groups) to the surface of the sample S or a pretreatment gas for the step of imparting OH groups is selected.
- water vapor (H2O), oxygen (O2), argon (Ar), etc. can be mentioned, and any gas that can be used for pretreatment in the process of imparting OH or a gas that imparts an OH group to the surface can be used. , is not limiting.
- the degree of vacuum is controlled by the exhaust flow control valve 8 and the vacuum pump 9, and the lower electrode 3 and the upper electrode 4 discharge.
- the gas functions as a plasma-generating gas, and the sample S is subjected to a plasma hydrophilization treatment.
- the bubbler 15 into which the vapor source 17, which is the reactant substance necessary for the plasma processing and the SAM film forming process, is injected is equipped with the mantle heater 16, and the plasma processing and the SAM are performed by heating.
- Vapor source 17 which is a reactant material required for the film deposition process, is generated and supplied to vacuum chamber 2 .
- the bubbler 15 is connected to a pipe through which a carrier gas is supplied from a carrier gas introduction port 12 for carrying the vapor of the vapor source 17 through a flow control valve/mass flow controller 13.
- piping is configured with a bypass valve 14 through which a carrier gas can be mixed with the vapor from the bubbler. If no carrier gas is required, the carrier gas may not be supplied.
- vapor source 17 which is a reactant substance necessary for the plasma processing and the SAM film forming process
- an evaporation source that imparts OH groups to the surface of the sample S or an evaporation source that promotes hydrolysis of the precursor of the SAM film is used.
- water (H2O) is exemplified and most used.
- the SAM film source chamber 18 into which the SAM precursor material vapor source 20 is injected is provided with a mantle heater 19, which heats to generate vapor in the SAM film source chamber 18. and supplied to the vacuum chamber 2.
- a mantle heater 19 which heats to generate vapor in the SAM film source chamber 18. and supplied to the vacuum chamber 2.
- An evaporation source is selected in which the material molecules themselves of the evaporation source are dehydrated and condensed between OH groups formed on the surface of the sample S.
- disilazane-based materials such as hexamethyldisilazane (HMDS), and chlorosilane-based materials, alkoxysilane-based materials, phosphonic acid-based materials, disilazane-based
- HMDS hexamethyldisilazane
- chlorosilane-based materials alkoxysilane-based materials
- phosphonic acid-based materials disilazane-based
- disilazane-based materials such as hexamethyldisilazane (HMDS), and chlorosilane-based materials, alkoxysilane-based materials, phosphonic acid-based materials, disilazane-based
- HMDS hexamethyldisilazane
- chlorosilane-based materials alkoxysilane-based materials
- phosphonic acid-based materials phosphonic acid-based materials
- disilazane-based disilazane-based materials
- the bubbler 35 into which the vapor source 37 of the SAM precursor material is injected evacuates the vapor of the SAM film raw material by flowing a carrier gas such as nitrogen (N2) without heating the SAM film raw material. It is used when supplying to the chamber 2 or the like.
- the bubbler 35 is connected to a pipe through which the carrier gas is supplied from the carrier gas inlet 32 for carrying the vapor of the vapor source 37 through the flow control valve/mass flow controller 33. Instead, a line is configured with a bypass valve 34 through which a carrier gas can be mixed with the vapor from the bubbler. If no carrier gas is required, the carrier gas may not be supplied.
- the SAM film raw material bubbler 35 acts as a vapor source 37 for the SAM precursor material to cause dehydration condensation between the OH groups formed by hydrolysis of the SAM film precursor material and the OH groups formed on the surface of the sample S. or an evaporation source in which the material molecules themselves of the SAM precursor material are dehydrated and condensed between OH groups formed on the surface of the sample S are selected.
- disilazane-based materials such as hexamethyldisilazane (HMDS), and chlorosilane-based materials, alkoxysilane-based materials, phosphonic acid-based materials, disilazane-based
- HMDS hexamethyldisilazane
- chlorosilane-based materials alkoxysilane-based materials
- phosphonic acid-based materials disilazane-based
- disilazane-based materials such as hexamethyldisilazane (HMDS), and chlorosilane-based materials, alkoxysilane-based materials, phosphonic acid-based materials, disilazane-based
- HMDS hexamethyldisilazane
- chlorosilane-based materials alkoxysilane-based materials
- phosphonic acid-based materials phosphonic acid-based materials
- disilazane-based disilazane-based materials
- Modification 3 a laminate manufacturing apparatus 300 as Modification 3 will be described with reference to FIG. 5 .
- the gas used for plasma processing is introduced from the gas inlet port 10, and the bubbler 15 for reactant substances required for the plasma processing and the SAM film forming process, and the SAM film , and five gas introduction pipes to which bubblers 35 and 45, which are the same as the bubbler 15 for reactant materials necessary for the plasma processing and SAM film formation process, are added as bubblers for the raw material of the SAM film. It is a connected configuration.
- the gas introduction pipe is surrounded by a heat insulating material (not shown) or a heater (not shown) so that the gas does not liquefy.
- the SAM film can be easily formed by continuously changing the type of evaporation source of the film raw material.
- the gas used for plasma processing introduced from the gas introduction port 10 is supplied from a gas cylinder (not shown) and introduced into the vacuum chamber 2 via the flow control valve/mass flow controller 11 .
- a gas that imparts hydroxyl groups (OH groups) to the surface of the sample S or a pretreatment gas for the step of imparting OH groups is selected.
- oxygen (O2), argon (Ar), etc. can be mentioned, and any gas can be used as long as it can be used for pretreatment of the step of imparting OH groups to the surface or imparting OH groups. is not.
- the degree of vacuum is controlled by the exhaust flow control valve 8 and the vacuum pump 9, and the lower electrode 3 and the upper electrode 4 discharge.
- the gas functions as a plasma-generating gas, and the sample S is subjected to a plasma hydrophilization treatment.
- the bubbler 15 into which the vapor source 17, which is the reactant substance necessary for the plasma processing and the SAM film forming process, is injected is provided with a mantle heater 16, and the plasma processing and the SAM are performed by heating.
- Vapor source 17 which is a reactant material required for the film deposition process, is generated and supplied to vacuum chamber 2 .
- the bubbler 15 is connected to a pipe through which a carrier gas is supplied from a carrier gas introduction port 12 for carrying the vapor of the vapor source 17 through a flow control valve/mass flow controller 13.
- piping is configured with a bypass valve 14 through which a carrier gas can be mixed with the vapor from the bubbler. If no carrier gas is required, the carrier gas may not be supplied.
- vapor source 17 which is a reactant substance necessary for the plasma processing and the SAM film forming process
- an evaporation source that imparts OH groups to the surface of the sample S or an evaporation source that promotes hydrolysis of the precursor of the SAM film is used.
- water (H2O) is exemplified and most used.
- the SAM film source chamber 18 into which the SAM precursor material vapor source 20 is injected is provided with a mantle heater 19, which heats to generate vapor in the SAM film source chamber 18. and supplied to the vacuum chamber 2.
- a mantle heater 19 which heats to generate vapor in the SAM film source chamber 18. and supplied to the vacuum chamber 2.
- An evaporation source is selected in which the material molecules themselves of the evaporation source are dehydrated and condensed between OH groups formed on the surface of the sample S.
- disilazane-based materials such as hexamethyldisilazane (HMDS), and chlorosilane-based materials, alkoxysilane-based materials, phosphonic acid-based materials, disilazane-based
- HMDS hexamethyldisilazane
- chlorosilane-based materials alkoxysilane-based materials
- phosphonic acid-based materials disilazane-based
- disilazane-based materials such as hexamethyldisilazane (HMDS), and chlorosilane-based materials, alkoxysilane-based materials, phosphonic acid-based materials, disilazane-based
- HMDS hexamethyldisilazane
- chlorosilane-based materials alkoxysilane-based materials
- phosphonic acid-based materials phosphonic acid-based materials
- disilazane-based disilazane-based materials
- the bubbler 35 into which the vapor source 37 of the SAM precursor material is injected evacuates the vapor of the SAM film raw material by flowing a carrier gas such as nitrogen (N2) without heating the SAM film raw material. It is used when supplying to the chamber 2 or the like.
- the bubbler 35 is connected to a pipe through which the carrier gas is supplied from the carrier gas inlet 32 for carrying the vapor of the vapor source 37 through the flow control valve/mass flow controller 33. Instead, a line is configured with a bypass valve 34 through which a carrier gas can be mixed with the vapor from the bubbler. If no carrier gas is required, the carrier gas may not be supplied.
- the SAM film raw material bubbler 35 acts as a vapor source 37 for the SAM precursor material to cause dehydration condensation between the OH groups formed by hydrolysis of the SAM film precursor material and the OH groups formed on the surface of the sample S. or an evaporation source in which the material molecules themselves of the SAM precursor material are dehydrated and condensed between OH groups formed on the surface of the sample S are selected.
- disilazane-based materials such as hexamethyldisilazane (HMDS), and chlorosilane-based materials, alkoxysilane-based materials, phosphonic acid-based materials, disilazane-based
- HMDS hexamethyldisilazane
- chlorosilane-based materials alkoxysilane-based materials
- phosphonic acid-based materials disilazane-based
- disilazane-based materials such as hexamethyldisilazane (HMDS), and chlorosilane-based materials, alkoxysilane-based materials, phosphonic acid-based materials, disilazane-based
- HMDS hexamethyldisilazane
- chlorosilane-based materials alkoxysilane-based materials
- phosphonic acid-based materials phosphonic acid-based materials
- disilazane-based disilazane-based materials
- the bubbler 45 into which the vapor source 47 of the SAM precursor material is injected evacuates the vapor of the SAM film raw material by flowing a carrier gas such as nitrogen (N2) without heating the SAM film raw material. It is used when supplying to the chamber 2 or the like.
- the bubbler 45 is connected to a pipe through which a carrier gas is supplied from a carrier gas introduction port 42 for carrying the vapor of the vapor source 47 through a flow control valve/mass flow controller 43.
- a line is configured with a bypass valve 44 through which a carrier gas can be mixed with the vapor from the bubbler. If no carrier gas is required, the carrier gas may not be supplied.
- the SAM film raw material bubbler 45 is used as a vapor source 47 for the SAM precursor material to cause dehydration condensation between the OH groups formed by hydrolysis of the SAM film precursor material and the OH groups formed on the surface of the sample S. or an evaporation source in which the material molecules themselves of the SAM precursor material are dehydrated and condensed between OH groups formed on the surface of the sample S are selected.
- disilazane-based materials such as hexamethyldisilazane (HMDS), and chlorosilane-based materials, alkoxysilane-based materials, phosphonic acid-based materials, disilazane-based
- HMDS hexamethyldisilazane
- chlorosilane-based materials alkoxysilane-based materials
- phosphonic acid-based materials disilazane-based
- disilazane-based materials such as hexamethyldisilazane (HMDS), and chlorosilane-based materials, alkoxysilane-based materials, phosphonic acid-based materials, disilazane-based
- HMDS hexamethyldisilazane
- chlorosilane-based materials alkoxysilane-based materials
- phosphonic acid-based materials phosphonic acid-based materials
- disilazane-based disilazane-based materials
- a step of adding OH groups to the surface of the comparative sample was performed.
- the atmospheric pressure in the vacuum chamber 2 was once reduced to 5-10 Pa.
- the mantle heater 16 heats the bubbler 15 into which water (H2O) is injected as a vapor source 17, which is a reactant substance necessary for the plasma processing and the SAM film forming process, to 70° C., and the water vapor gas is vacuumed. It was introduced into the chamber 2 so that the atmospheric pressure in the vacuum chamber 2 was 100 Pa.
- a high-frequency power source of 13.56 MHz was used as the plasma generating power source 7, and water vapor plasma irradiation was performed for 3 minutes at a power of 200 W.
- the vacuum chamber 2 was exposed to the atmosphere, and the contact angle of water on the SiO2 substrate of the comparative sample was measured to be 5° or less. confirmed.
- the vacuum chamber 2 was opened to the atmosphere to form the SAM film on the substrate surface, and it took a long time to form the SAM film. Therefore, it is difficult to industrially employ the formation of such a SAM film.
- Example 2 In the apparatus of Modified Example 1 based on the laminate manufacturing apparatus 200 shown in FIGS. , the upper electrode 4 is arranged to face the lower electrode 3 in parallel.
- a step of imparting OH groups to the surface of sample S was performed in the same manner as in the comparative example. That is, the atmospheric pressure in the chamber 2 was once reduced to 5-10 Pa. After that, the mantle heater 16 heats the bubbler 15 into which water (H2O) is injected as a vapor source 17, which is a reactant substance necessary for the plasma processing and the SAM film forming process, to 70° C., and the water vapor gas is introduced into the chamber. 2 was introduced so that the atmospheric pressure in the chamber 2 was 100 Pa.
- a high-frequency power source of 13.56 MHz was used as the plasma generating power source 7, and water vapor plasma irradiation was performed for 3 minutes at a power of 200 W.
- the SAM film material chamber 18 into which 5 cc of 1H, 1H, 2H, 2H-perfluorooctyltrimethoxysilane was injected was heated to 50°C using the mantle heater 19.
- the valve of the bubbler 15 is closed, and the valve of the raw material chamber 18 for the SAM film is opened without exposing the vacuum chamber 2 to the atmosphere.
- a SAM film was formed on the sample by introducing silane into the vacuum chamber 2 and exposing the SiO2 substrate of sample S to 1H,1H,2H,2H-perfluorooctyltrimethoxysilane vapor for 20 minutes.
- the vacuum chamber 2 was opened to the atmosphere, and when the contact angle of water on the sample substrate S was measured, it was confirmed that the water-repellent treatment was applied to the sample substrate S at 99°. . Therefore, it was confirmed that the SAM film of the 1H,1H,2H,2H-perfluorooctylsiloxane derivative was formed with high density.
- the SAM film can be simply, easily formed with good reproducibility, and the laminate can be manufactured by using the laminate manufacturing apparatus of the present invention.
- the surface hydrophilization mode and the self-assembly mode were performed in a common vacuum chamber without opening the vacuum chamber to the atmosphere. After performing the assembling mode, the vacuum chamber may be released to the atmosphere once, and then the self-assembling mode may be performed in another vacuum chamber.
- Reference Signs List 1 100, 200, 300 laminate manufacturing apparatus 2 vacuum chamber 3 lower electrode (stage) 4 Upper electrode 5 Pressure gauge 6 Ground 7 Plasma generation power supply 8 Exhaust flow control valve 9 Vacuum pump 10 Gas introduction port 11, 13, 33, 43 Flow control valve/mass flow controller 12, 32, 42 Carrier gas introduction port 14, 34, 44 Bypass valve 15 Bubbler for reactant substances required for plasma processing and SAM film deposition process 16, 19 Mantle heater 17 Vapor source 18 for reactant substances required for plasma processing and SAM film deposition process Raw material chamber of SAM film 20 Vapor source of SAM precursor material 21 Gas introduction part 22 Current introduction terminal 23 Electrode stage 24 Gas shower plate 25 Earth ring 26 Insulation member 27 Upper chamber 28 Lower chamber 29 Vacuum exhaust port 30 O-ring 35, 45 SAM film raw material bubbler 37, 47 SAM precursor material vapor source
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- Mechanical Engineering (AREA)
- General Chemical & Material Sciences (AREA)
- Physics & Mathematics (AREA)
- Plasma & Fusion (AREA)
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- General Health & Medical Sciences (AREA)
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- Medicinal Chemistry (AREA)
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Abstract
Description
(1)真空チャンバー内に、親水性基を付与する蒸発源が供給された状態で、プラズマ発生部により形成されたプラズマ雰囲気により前記基板の膜形成面を改質し、膜形成面を親水化する表面親水化モード
(2)膜形成面が親水化された基板に対し、真空チャンバー内が真空中、SAM膜の前駆体材料の加水分解を促進する蒸発源が供給された状態で、SAM膜の前駆体材料の蒸発源を供給して、親水化された膜形成面上にSAM膜を形成する自己組織化モード。
以下、図3に基づいて変更例1である積層体製造装置100について説明する。
以下、図4に基づいて変更例2である積層体製造装置200について説明する。
以下、図5に基づいて変更例3である積層体製造装置300について説明する。
図2、3に示す積層体製造装置200による、変更例1の装置において、比較サンプルであるSiO2(硝子)製の基板Sを真空チャンバー2の下部電極3上に設置し、上部チャンバー27で蓋をし、下部電極3に対して上部電極4が平行に対向するように設置した。
図2、3に示す積層体製造装置200による、変更例1の装置において、サンプルSであるSiO2(硝子)製の基板をチャンバー2の下部電極3上に設置し、上部チャンバー27で蓋をし、下部電極3に対して上部電極4が平行に対向するように設置された。
2 真空チャンバー
3 下部電極(ステージ)
4 上部電極
5 圧力ゲージ
6 アース
7 プラズマ生成用電源
8 排気流量調整バルブ
9 真空ポンプ
10 ガス導入口
11、13、33、43 流量調整バルブ/マスフローコントローラ
12、32、42 キャリアガスの導入口
14、34、44 バイパス弁
15 プラズマ処理やSAM膜の成膜工程に必要な反応体物質用のバブラー
16、19 マントルヒーター
17 プラズマ処理やSAM膜の成膜工程に必要な反応体物質である蒸気源
18 SAM膜の原料チャンバー
20 SAM前駆体材料の蒸気源
21 ガス導入部
22 電流導入端子
23 電極ステージ
24 ガスシャワー板
25 アースリング
26 絶縁部材
27 上部チャンバー
28 下部チャンバー
29 真空排気口
30 O-リング
35、45 SAM膜の原料のバブラー
37、47 SAM前駆体材料の蒸気源
Claims (13)
- 基板の膜形成面に自己組織化単分子膜を形成する積層体製造装置であって、
基板を収容する真空チャンバーと、
前記真空チャンバー内にガスを導入するガス導入口と、
前記真空チャンバー内にプラズマ雰囲気を形成するプラズマ発生部と、
を備え、
前記真空チャンバー内に、親水性基を付与する蒸発源が供給された状態で、前記プラズマ発生部により形成されたプラズマ雰囲気により前記基板の膜形成面を改質し、該膜形成面を親水化する表面親水化モードと、
前記膜形成面が親水化された基板に対し、前記真空チャンバー内が真空中、前記自己組織化単分子膜の前駆体材料の加水分解を促進する蒸発源が供給された状態で、前記自己組織化単分子膜の前駆体材料の蒸発源を供給して、親水化された前記膜形成面上に前記自己組織化単分子膜を形成する自己組織化モードと、
を有することを特徴とする積層体製造装置。 - 前記表面親水化モードと、前記自己組織化モードとは、共通の前記真空チャンバー内で実行されることを特徴とする請求項1に記載の積層体製造装置。
- 前記表面親水化モードから前記自己組織化モードへの移行は、前記真空チャンバーが大気に解放されることなく行われることを特徴とする請求項1又は2に記載の積層体製造装置。
- 前記基板の表面に水酸基を付与する蒸発源、及び前記自己組織化単分子膜の前駆体材料の加水分解を促進する蒸発源は、共に水蒸気であることを特徴とする請求項1~3の何れかに記載の積層体製造装置。
- 前記自己組織化モードにおける水蒸気は、前記表面親水化モードで残存した水蒸気であることを特徴とする請求項4に記載の積層体製造装置。
- 前記プラズマ発生部は、前記基板を載置するステージを兼ねる下部電極と、前記下部電極に対向して配置される上部電極とがプラズマ発生電極として形成されていることを特徴とする請求項1~5の何れかに記載の積層体製造装置。
- 前記自己組織化単分子膜の前駆体材料の蒸発源は、共通の前記ガス導入口から供給されることを特徴とする請求項4または5に記載の積層体製造装置。
- 前記ステージの周りには、アースリングが隙間を有するように設けられており、その隙間を通じて前記真空チャンバー内のガスが排出されることを特徴とする請求項6に記載の積層体製造装置。
- 前記ガス導入口に接続されるガス配管には、バブラーが設けられていることを特徴とする請求項1~8の何れかに記載の積層体製造装置。
- 基板の表面に自己組織化単分子膜を形成する方法であって、
真空チャンバー内に前記基板を配置する工程(A)と、
前記真空チャンバー内に、前記基板の表面に親水性基を付与する蒸発源を供給し、前記真空チャンバー内をプラズマ化することにより、前記蒸発源のプラズマを発生させて、前記基板表面を親水化する工程(B)と、
前記工程(B)の後、前記真空チャンバー内に、前記自己組織化単分子膜の前駆体材料の加水分解を促進する蒸発源を供給した状態で、前記自己組織化単分子膜の前駆体材料の蒸発源を供給して、前記基板の表面に前記自己組織化単分子膜を形成する工程(C)と
を含み、
前記工程(B)及び前記工程(C)は、前記真空チャンバーを大気に解放することなく実行されることを特徴とする自己組織化単分子膜の形成方法。 - 基板の膜形成面に自己組織化単分子膜を形成する積層体製造装置であって、
前記積層体製造装置は、前記基板を設置するチャンバーを有し、
前記チャンバーは、前記チャンバー内にガスを導入するガス導入口と真空排気口と前記チャンバー内の圧力を監視する圧力ゲージを有する真空チャンバーであって、
前記真空チャンバー内には、プラズマ生成用電源に接続された下部電極ステージと、前記下部電極ステージに対向するガスシャワー板を兼ねる上部電極と、前記ガスシャワー板を設置する内壁面を有し、前記内壁面がアース面であって、真空プラズマ処理プロセスの機能を有し、
前記ガス導入口には、プラズマ生成ガスと前記自己組織化単分子膜の原料ガス等の少なくとも2系統以上のガス導入配管が接続されており、
プロセスの切替時に導入ガスの切替又は混合する機能を有すること特徴とする積層体製造装置。 - 前記上部電極又は/且つ前記下部電極ステージがサンプルステージの機能を有することを特徴とする請求項11に記載の積層体製造装置。
- 前記ガス導入配管が3系統以上5系統以下であることを特徴とする請求項11または12に記載の積層体製造装置。
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