WO2006098101A1 - 金属材料、金属材料を用いた半導体集積回路用配線および被覆膜 - Google Patents
金属材料、金属材料を用いた半導体集積回路用配線および被覆膜 Download PDFInfo
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- WO2006098101A1 WO2006098101A1 PCT/JP2006/302091 JP2006302091W WO2006098101A1 WO 2006098101 A1 WO2006098101 A1 WO 2006098101A1 JP 2006302091 W JP2006302091 W JP 2006302091W WO 2006098101 A1 WO2006098101 A1 WO 2006098101A1
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C9/00—Alloys based on copper
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22F—CHANGING THE PHYSICAL STRUCTURE OF NON-FERROUS METALS AND NON-FERROUS ALLOYS
- C22F1/00—Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working
- C22F1/08—Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working of copper or alloys based thereon
-
- 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
- C23C26/00—Coating not provided for in groups C23C2/00 - C23C24/00
-
- 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
- C23C28/00—Coating for obtaining at least two superposed coatings either by methods not provided for in a single one of groups C23C2/00 - C23C26/00 or by combinations of methods provided for in subclasses C23C and C25C or C25D
- C23C28/02—Coating for obtaining at least two superposed coatings either by methods not provided for in a single one of groups C23C2/00 - C23C26/00 or by combinations of methods provided for in subclasses C23C and C25C or C25D only coatings only including layers of metallic material
-
- 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
- C23C30/00—Coating with metallic material characterised only by the composition of the metallic material, i.e. not characterised by the coating process
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- C—CHEMISTRY; METALLURGY
- C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
- C25D—PROCESSES FOR THE ELECTROLYTIC OR ELECTROPHORETIC PRODUCTION OF COATINGS; ELECTROFORMING; APPARATUS THEREFOR
- C25D3/00—Electroplating: Baths therefor
- C25D3/02—Electroplating: Baths therefor from solutions
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- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10P—GENERIC PROCESSES OR APPARATUS FOR THE MANUFACTURE OR TREATMENT OF DEVICES COVERED BY CLASS H10
- H10P14/00—Formation of materials, e.g. in the shape of layers or pillars
- H10P14/40—Formation of materials, e.g. in the shape of layers or pillars of conductive or resistive materials
- H10P14/42—Formation of materials, e.g. in the shape of layers or pillars of conductive or resistive materials using a gas or vapour
- H10P14/43—Chemical deposition, e.g. chemical vapour deposition [CVD]
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- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10P—GENERIC PROCESSES OR APPARATUS FOR THE MANUFACTURE OR TREATMENT OF DEVICES COVERED BY CLASS H10
- H10P14/00—Formation of materials, e.g. in the shape of layers or pillars
- H10P14/40—Formation of materials, e.g. in the shape of layers or pillars of conductive or resistive materials
- H10P14/42—Formation of materials, e.g. in the shape of layers or pillars of conductive or resistive materials using a gas or vapour
- H10P14/44—Physical vapour deposition [PVD]
-
- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10P—GENERIC PROCESSES OR APPARATUS FOR THE MANUFACTURE OR TREATMENT OF DEVICES COVERED BY CLASS H10
- H10P14/00—Formation of materials, e.g. in the shape of layers or pillars
- H10P14/40—Formation of materials, e.g. in the shape of layers or pillars of conductive or resistive materials
- H10P14/46—Formation of materials, e.g. in the shape of layers or pillars of conductive or resistive materials using a liquid
-
- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10P—GENERIC PROCESSES OR APPARATUS FOR THE MANUFACTURE OR TREATMENT OF DEVICES COVERED BY CLASS H10
- H10P14/00—Formation of materials, e.g. in the shape of layers or pillars
- H10P14/40—Formation of materials, e.g. in the shape of layers or pillars of conductive or resistive materials
- H10P14/46—Formation of materials, e.g. in the shape of layers or pillars of conductive or resistive materials using a liquid
- H10P14/47—Electrolytic deposition, i.e. electroplating; Electroless plating
-
- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10W—GENERIC PACKAGES, INTERCONNECTIONS, CONNECTORS OR OTHER CONSTRUCTIONAL DETAILS OF DEVICES COVERED BY CLASS H10
- H10W20/00—Interconnections in chips, wafers or substrates
- H10W20/01—Manufacture or treatment
- H10W20/031—Manufacture or treatment of conductive parts of the interconnections
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K1/00—Printed circuits
- H05K1/02—Details
- H05K1/09—Use of materials for the conductive, e.g. metallic pattern
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T428/00—Stock material or miscellaneous articles
- Y10T428/24—Structurally defined web or sheet [e.g., overall dimension, etc.]
- Y10T428/24802—Discontinuous or differential coating, impregnation or bond [e.g., artwork, printing, retouched photograph, etc.]
- Y10T428/24917—Discontinuous or differential coating, impregnation or bond [e.g., artwork, printing, retouched photograph, etc.] including metal layer
Definitions
- the present invention relates to a metal material, particularly to a metal material used for a metal coating film used in a semiconductor device or an electronic device.
- an aluminum alloy film by sputtering or a copper film by plating is used for wiring of a semiconductor integrated circuit.
- electrodes and connectors which are electrical appliances, are provided with a coating film such as gold or silver by a sputtering method or a staking method in order to reduce the bonding resistance, and screws and bolts, which are mechanical parts, are protected.
- a coating film of nickel or chromium is provided for the purpose of dredging.
- Patent Document 1 describes wiring with a multilayer structure.
- Patent Document 2 discloses metal wiring based on a porous film formed by a sol-gel method
- Patent Document 3 discloses baking after shaping an alumina fiber with a gelled binder. It describes machine parts that are made by infiltrating metal into a prototype that has been hardened (a kind of sol-gel method).
- Patent Document 1 Japanese Patent Laid-Open No. 5-198691
- Patent Document 2 Japanese Patent Laid-Open No. 2003-51463
- Patent Document 3 Japanese Patent Laid-Open No. 7-252556
- the metal film of the wiring of the conventional semiconductor integrated circuit described above sometimes fails to maintain the reliability of the semiconductor device because the wiring is disconnected.
- the present invention has been made to meet the above-mentioned demands, and its purpose is to provide the chemical properties and electrical properties of a metal material (metal filled in the gaps of a three-dimensional network structure). To provide a composite metal material that can be used for various metal films and a method for producing the same, with improved mechanical strength, wear resistance, and uniformity as a film while maintaining the properties as they are. .
- the metal material of the present invention for achieving the above object is a transmission electron microscope image!
- the metal is densely filled into the voids of the network structure of the gel, which is composed of crystal grains that are observed to appear to be subdivided into irregular shapes and filled with moire patterns whose intervals and angles are not constant. It is characterized by that.
- the interval between the moire patterns can be set to lOnm or less, and the average size of the subdivision areas can be set to 50 ⁇ m or less.
- a gel network is a three-dimensional network formed by cross-linking or entanglement of a polymer in which atoms or molecules (monomers) are linked one-dimensionally. The crystal lattice of the metal densely packed in the voids of the gel network structure is displaced and distorted by the one-dimensional polymer molecules. For this purpose, it is observed as if it were subdivided into irregular shapes in a transmission electron microscope image and filled with moire patterns with non-constant intervals and angles.
- the chemical properties and electrical properties of the metal filled in the gap between the three-dimensional mesh thread and the woven material (hereinafter also referred to as filled metal or filled metal).
- the mechanical strength and wear resistance can be improved while maintaining the mechanical properties.
- these metal materials include the density of the three-dimensional network in the metal material, (i) selection of the type of gel used for the three-dimensional network, and (ii) the three-dimensional network. And (iii) adjusting the amount of the solvent contained in the gel formed on the substrate throughout the three-dimensional network formation process, and can be uniformly controlled with good reproducibility. As a result, filling The dislocation density of the formed metal can be controlled, and the dislocation can be uniformly introduced into the metal with good reproducibility.
- the volume ratio or weight ratio of the three-dimensional network structure to the solvent can be reduced to 1% or less, and the three-dimensional network structure for the metal to be filled
- the amount of weaving can be finely adjusted. Therefore, it is possible to prevent the three-dimensional network structure from becoming an impurity and changing the chemical properties such as chemical resistance and the electrical properties such as the electric resistance of the filled metal. As a result, it is possible to easily produce a metal material having high mechanical strength and excellent wear resistance while maintaining the chemical and electrical properties of the filled metal.
- the volume ratio of the three-dimensional network to the solvent refers to the difference between the volume of the gel containing the solvent and the volume of the solvent alone (the three-dimensional network of the gel). Volume) is divided by the volume of the gel containing the solvent.
- the weight ratio of the three-dimensional network to the solvent is the weight of the gel (dried gel and! /, U) dried from the solvent (the weight of the three-dimensional network of the gel). It is the value divided by the sum of the weight of the dry gel and the weight of the solvent.
- the solvent is assumed to be water, and if the solvent is other than water, the calculation is performed by substituting the weight of water of the same volume.
- a metal film having high mechanical strength and excellent wear resistance can be obtained while maintaining the chemical properties and electrical properties of the filled metal.
- the coating film when used for wiring of a semiconductor integrated circuit, it is a wiring that is less likely to cause disconnection, and a highly reliable semiconductor integrated circuit can be obtained.
- the coating film when used as a coating film for machine parts, the coating film has high mechanical strength, excellent wear resistance, and is difficult to peel off from the substrate.
- the chemical of the metal filled in the gaps in the three-dimensional network structure of the gel (hereinafter sometimes referred to as filled metal or filled metal).
- filled metal or filled metal the chemical of the metal filled in the gaps in the three-dimensional network structure of the gel.
- a gel network (three-dimensional network structure) is formed by crosslinking or entanglement of a polymer in which atoms or molecules (monomers) are linked one-dimensionally.
- the gel The crystal lattice of the metal densely filled in the voids of the network structure is displaced and distorted for each void by one molecule of one-dimensional polymer. Therefore, it is observed as if it were subdivided into irregular shapes in a transmission electron microscope image and filled with moire patterns whose intervals and angles are not constant. Even though the gel network itself is not observed, it is a feature of the metal material of the present invention that it is subdivided into irregular shapes and filled with moire patterns whose intervals and angles are not constant. Embedded in metal, V, ru, or embedded, can be identified as a modified gel.
- the reason why the mechanical strength and wear resistance can be improved while maintaining the chemical and electrical properties of the metal filled in the gaps in the three-dimensional network structure of the gel is that One-dimensional chain of gel atoms or molecules forming a three-dimensional network structure (formed by linking one-dimensional bonds of atoms or molecules of the gel) to the formed metal crystal lattice This is because a lattice defect structure that can serve as a dislocation or a dislocation source is introduced into the core, and it is not simply the force of adding impurity atoms to the metal. In other words, the filled metal crystals are in a state in which dislocations entangled in a network are introduced at a high density, and the above effects can be obtained by the following two actions.
- the metal material of the present invention is entangled in a network form in the metal crystal! / And dislocations are introduced at a high density, the lattice defects of this metal change on the nanometer order, and the lattice strain is uneven. It is in a state. Generally, when an external force is applied to a metal, metal atoms try to diffuse
- the diffusion path of such metal atoms is complicatedly bent by the non-uniform lattice distortion.
- this metal material has a low mechanical deformation and wear resistance since the rate of plastic deformation due to self-diffusion of the filled metal is slow.
- the metal 401 is deformed while evenly distributing the strain in the crystal grain order, so that no stress concentration that leads to breakage or cutting occurs in the grain boundary 402. Therefore, the metal material of the present invention has improved mechanical strength and wear resistance.
- the three-dimensional network 406 is indicated by a solid line
- the dislocation network 407 is indicated by a broken line.
- dislocation is a kind of lattice defect, and refers to a series of atomic displacements that occur along a line (dislocation line) in a crystal.
- the metal film when the metal film is formed on the substrate as a metal film by the above two actions, the interface stress with the substrate can be relaxed. Difficult to peel off, it becomes a metal film (coating film).
- the method for producing a metal material of the present invention various effects can be obtained by adjusting the amount of the solvent (iii). For example, if the volume ratio or weight ratio of the three-dimensional network to the solvent is adjusted to 10% or less, the change in the electrical properties of the filled metal can be sufficiently suppressed. Further, if the volume ratio is adjusted to 5% or less, the change in the color of the filled metal can be sufficiently suppressed. Furthermore, when the volume ratio or the like is adjusted to 20% or less, when the metal is filled into the gaps of the three-dimensional network structure by the plating method, the metal can be densely filled easily. In addition, if the volume ratio is adjusted to 2% or less, the metal is densely packed when the metal is filled in the gaps of the three-dimensional network structure by physical vapor deposition such as sputtering or vapor deposition. Filling can be performed easily.
- the size of the network of the three-dimensional network can be adjusted within the range of several nanometer force and several tens of nanometers, and sufficient strength and use of the metal material It is possible to achieve compatibility with functions that meet the requirements.
- a three-dimensional network structure causes a plating solution or a liquid caused by surface roughness, electric field concentration, temperature difference, or the like of the substrate on which the metal material is formed. Since the convection of the source gas is suppressed, the thickness of the obtained metal material becomes uniform. Therefore, when such a metal material is used for various metal films, the uniformity of the film is improved! The invention's effect
- the present invention when used for various metal films while maintaining the chemical and electrical properties of the metal material, at least the mechanical strength, the wear resistance, and the uniformity as the film are at least. One can be improved.
- the metal material of the present invention is suitable for use as a coating film for wiring of a semiconductor integrated circuit, or for an electrical appliance, a machine part, or an optical part.
- the method for producing a metal material of the present invention (1) after the step of filling the metal, the method includes a step of removing a part of the three-dimensional mesh thread and weaving; After the step of filling, having a step of modifying a part of the three-dimensional network, (3) the gel is formed of an organic material, and after the step of filling the metal, the tertiary The effect is not lost by having a process of carbonizing a part of the original network.
- FIG. 2 is a schematic cross-sectional view showing an example of the metal material of the present invention.
- the metal material of the present invention has a structure in which the metal 103 is densely filled in the gaps of the (three-dimensional) network structure 102 of the gel. That is, from another viewpoint, the metal material of the present invention has a structure in which a three-dimensional network structure 102 of gel is provided in a metal 103 film. The three-dimensional network structure 102 of the gel does not mechanically support the force metal 103 film provided throughout the metal 103 film from the inside.
- FIG. 3 is a schematic view showing an example of the metal material of the present invention.
- the crystal grains that are subdivided into irregular shapes and filled with the moire pattern 202 whose intervals and angles are not constant are often observed. Is perceived.
- the size 203 of the subdivision area in the area occupied by the moire pattern 202 corresponds to the width of the gel network 201 that divides the moire pattern 202, and the average size is 50 ⁇ m or less, preferably 2 to 50nm. .
- the moiré spacing produced by superposition of misaligned crystal lattices does not exceed 10 nm.
- the power of the boundary area where moiré is not visible The width is smaller than the size of the moiré area.
- the cause of this is the gel network organization 2 This is because the crystal lattice having a structure in which metal is densely filled in the voids 01 is distorted by a one-dimensional polymer molecule that is displaced at slightly different angles for each void. In other words, when there are two or more gel void regions in the electron incident direction of the transmission electron microscope, moire is observed due to the superposition of the shifted lattices.
- These moiré patterns are subdivided into irregular shapes to match the size of the three-dimensional network structure of the gel, and since the displacement of the crystal lattice is not constant within the network, The angle is not constant and fluctuates.
- the transmission electron microscope image subdivided into the above irregular shapes and filled with moire patterns whose intervals and angles are not constant is observed throughout the crystal grains with crystal orientation and thickness conditions. Is done. This is a characteristic observed only with the metal material of the present invention.
- the moire pattern is generated by a shifted crystal lattice, and is not a composition, a phase change, an equal thickness interference fringe, a curved interference fringe or the like. Even if the orientation is changed, the stripes will not disappear.
- stacking faults cause a staggered pattern by shifting the crystal lattice, but the area is discrete, showing polygons such as triangles and hexagons, and the stripes are equally spaced, It can be distinguished from differences such as linearity.
- the gel network structure intentionally forms a minute periodic structure, it exhibits an indefinite shape regardless of the crystal lattice, and therefore, the shape of the subdivision region delimited by the gel network structure is indefinite. Furthermore, since the direction of the one-dimensional polymer molecules constituting the gel network structure is determined independently of the crystal lattice, the strain generated in the metal crystal lattice is not constant in both magnitude and angle. The spacing and angle are not constant and will fluctuate.
- the metal material of the present invention forms a three-dimensional network structure containing a solvent in the gap by forming a gel having a three-dimensional network structure on the substrate, and the above-mentioned solvent is formed by plating.
- the first manufacturing method in which a metal material is manufactured by filling a metal into the gap by replacing with a three-dimensional network having a solvent in the gap by forming a gel having a three-dimensional network on the substrate.
- a structure and drying this solvent by supercritical drying or the like, a three-dimensional network structure that does not contain a solvent is formed without crushing the gap, and a metal is formed by chemical vapor deposition or physical vapor deposition.
- It can be manufactured by a second manufacturing method in which a metal material is manufactured by filling the gap. In addition, it melts without crushing the gap.
- the one that has only a three-dimensional network structure that does not contain a medium is called an air mouth gel.
- colloidal solution When the colloidal solution is heated or cooled, it may lose its fluidity and solidify (particles are connected and take a three-dimensional network structure or the like). A state in which the colloidal solution has lost its fluidity is generally called a gel. Gel force When moisture is forcibly removed, a porous structure that collapses and adheres remains. This is also a three-dimensional network structure, but is not included in the definition of gel in this specification.
- the gel in this specification has a three-dimensional network formed by one-dimensional chain of atoms or molecules (one-dimensional bonds of atoms and the like are chained), A substance containing a solvent.
- the gel has a three-dimensional network structure in which a one-dimensional chain of such atoms or molecules is cross-linked with another one-dimensional chain through a crosslinking point, and a substance containing a solvent in the gap is also included. included.
- the three-dimensional network structure of the gel includes a structure having a crosslinked structure and a structure having no crosslinked structure. Moreover, even if it does not have a crosslinked structure, it may be a structure in which one-dimensional chains cross each other. However, the three-dimensional network in this specification must be composed of a one-dimensional chain of atoms or molecules. In other words, a structure in which porous materials and particles are connected to each other is not included in the gel of the present invention even if the raw material is a gel. In particular, a sol-gel porous material that bakes and hardens a gel to form a solid is no longer a solid with holes and can never be used in the present invention.
- an extended interpretation of a one-dimensional chain of atoms or molecules includes so-called fibers, but in order to obtain the effects of the present invention, a one-dimensional chain of atoms or molecules.
- the diameter (thickness) of the bundle must be less than 20 nanometers. Must be 0 nanometers or less.
- examples of the plating method used to fill the gaps in the three-dimensional network structure include an electrolytic plating method or an electroless plating method. It is preferable to apply the electroplating method for the viewpoint power to perform dense filling.
- the metal filled by applying this plating method may have a multilayer structure of a plurality of types of metals.
- the substrate on which the three-dimensional network is formed is bonded to the desired metal. It can be easily formed by dipping in a plating solution and then dipping in another metal plating solution.
- the metal is filled in the gap between the three-dimensional network yarns and the weave in this way, it is preferable to remove excess gel as necessary.
- the gel in a portion not filled with the metal is removed.
- a method for removing the gel a chemical mechanical carbolithizing method or a method of washing with a jet water stream or hot water of 80 ° C or higher can be used.
- chemical mechanical polishing it is possible to remove the excess portion of the metal filled with the excess gel.
- the solvent is dried from the three-dimensional network structure of the gel formed on the substrate so as not to crush the three-dimensional network structure of the gel.
- a drying method a supercritical drying method, a freeze drying method, or the like can be applied, and the supercritical drying method is preferable from the viewpoint of not destroying the three-dimensional network structure.
- the supercritical drying method is a method in which the solvent is dried at a temperature higher than the critical temperature and higher than the critical pressure. Since the surface tension of the solvent becomes zero, the solvent is removed without destroying the three-dimensional network structure of the gel. Can be dried.
- a source gas that can be used in the chemical vapor deposition method (CVD method) used to fill the gaps obtained by drying the solvent with a metal it is generally used in the CVD method.
- Inorganic metal compounds such as Rogeny tungsten and organometallic compounds such as trimethylaluminum.
- a thermal CVD method, a plasma CVD method or a photo CVD method can be used, and a well-known general method can be used for the method and conditions.
- the metal is filled using the thermal CVD method in the manufacturing process of the metal material, it is desirable to select a gel material having heat resistance against the growth temperature of the metal among the gel materials.
- the physical vapor deposition method may be employed instead of the CVD method, and the metal filling by the physical vapor deposition method includes filling by sputtering and filling by vapor deposition.
- the metal filling by the physical vapor deposition method includes filling by sputtering and filling by vapor deposition.
- FIG. Figure 4 shows an image of one crystal grain with an electron beam incident orientation of 211>, that is, an orientation perpendicular to the paper surface and appropriate thickness conditions.
- the in-plane crystal orientation is indicated by an arrow drawn on the left side.
- the moiré fringes that appear under these conditions are approximately the ⁇ 011> direction (generically including all azimuths equivalent to the azimuth including the (011) azimuth. The same applies hereinafter) and are perpendicular to the moiré fringes.
- the above-described metallic material of the present invention based on Cu shows no change even after heat treatment at 350 ° C for 30 minutes.
- the disconnection rate due to stress migration and electo port migration can be reduced to 1Z1000 compared to conventional Cu wiring.
- the above-mentioned film having a Cu-based metallic material force was produced as follows. First, the Si wafer As a pretreatment for unraveling, a sputtered Cu film about lOOnm thick was deposited. Thereafter, a 0.8 wt.% Agarose aqueous solution heated to 80 ° C. was dipped on the wafer surface and immediately placed in cold water to coat the surface with a 10 m thick gel. After immersing in Cu electroplating solution as it was to grow a Cu film with a thickness of 50 Onm or more, excess agarose gel was removed with hot water at 80 ° C or higher. Transmission electron microscope observation was performed by preparing a cross-sectional sample of the above film by mechanical polishing and ion milling.
- a coating film inside a lens barrel in which a lens as one of optical components is housed or one of electric appliances.
- Many applications such as the surface layer of a certain metal gasket and the coating film of a knife such as a force razor, which is one of mechanical parts, are conceivable.
- a part of the three-dimensional network may be removed or transformed.
- a metal material is used for a coating film of a part or the like in a high vacuum apparatus, it is exposed on the surface of the composite metal material in order to prevent the inside of the apparatus from being contaminated by the gel constituting the three-dimensional network structure.
- the three-dimensional network that is being removed can be removed or transformed.
- a method of removing a part of the three-dimensional network structure for example, a method of removing a three-dimensional network structure of a certain depth from the surface of the metal material by etching, oxygen plasma treatment or the like can be mentioned.
- Examples of the method for modifying a part of the three-dimensional network structure include a method of reacting a metal with a three-dimensional network structure of a gel located near the surface of a metal material by heat treatment. Even in the case of a metal material in which the core three-dimensional network structure has disappeared in this way, the dislocation structure is preserved in the filled metal, so mechanical strength, wear resistance, peel resistance, etc. The effect is maintained
- the gel that can be used in the present embodiment includes a natural material gel or a synthetic material gel as shown in Table 1, and each gel has a three-dimensional network structure and a gap. It is preferably applied as a substance containing a solvent.
- Gadok beta-sugar algae I marine I Raahi D Sun L Thuro ⁇ ⁇ One--One-,
- Natural material gels may include polysaccharide gels, protein gels or DNA gels. Moreover, the gel which also has a component extract isotropic force from them may be sufficient.
- the polysaccharide gel is formed from a gel material such as seaweed polysaccharide, plant polysaccharide or microbial polysaccharide.
- the seaweed polysaccharide gel material includes 13-D-galactose, anhydro-a-D-galactose, anhydro-a L-galatose, 13D mannuronic acid or a galactose based on a L-guluronic acid. (Garagenan, agarose, etc.) or alginic acid.
- Gelatin materials for plant polysaccharides include protopectin, pectinic acid, pectinic acid-D galataturonic acid), ⁇ D gnolecose, 13 D mannose or ⁇ D galatatoose as the main component. Nyaku mannan, locust bean gum or gua gum.
- Gel materials for microbial polysaccharides include linear dulcan,
- -Gellan gum xanthan gum, curdlan, or amino acid gel based on glucuronic acid, ⁇ - L rhamnose, mannose, poly ( ⁇ -glutamine) or poly ( ⁇ -lysine).
- any polymer material such as gelatin, boiled egg white or tofu can be used.
- DNA or RNA can be used as the gel material forming the DN gel.
- the synthetic material gel is formed from an inorganic gel formed from a gel material such as oxides, metal salts, or nanotubes, or from a gel material such as an organic acid salt, organic metal, or crosslinked polymer.
- a gel material such as oxides, metal salts, or nanotubes
- An organic gel can be mentioned.
- Examples of the gel formed from the acid gel material include silica gel, alumina gel, titer gel, and the like. Tetramethoxysilane can be used as a material for forming silica gel.
- nitrate As the gel material of the metal salt, nitrate can be used.
- the gel material of the nanotubes carbon nanotubes, boron nitride nanotubes, or the like can be used.
- gel materials of organic acid salts include acetates, ethyl hexanesan salts, neodecanoates and octanoates.
- organic metal gel material examples include alkoxide (methoxide, ethoxide, butoxide, propoxide, isopropoxide, methoxyethoxide, etc.) or acetylacetonate.
- alkoxide methoxide, ethoxide, butoxide, propoxide, isopropoxide, methoxyethoxide, etc.
- acetylacetonate For example, Cu methoxide or the like can be used.
- Examples of the gel material of the crosslinked polymer include polybulal alcohol, polyacrylic acid, acrylic amide, silicone, polyurethane, polyethylene oxide, and polyethylene glycol.
- the gel molecules used as the gel material are used for the purpose of positively exerting the additive effect.
- the coating film of the metal material of the present embodiment formed on the substrate is obtained by applying a dispersion obtained by dispersing the gel material in an appropriate solvent on the substrate, and then applying the metal by a metal plating method. Obtained by filling.
- the solvent for example, water or an organic solvent such as methanol can be used as long as the gel material can be dispersed.
- dispersion includes both mixing and dissolution.
- the substrate (base material) is a substrate (base material) on which a metal material is formed as a metal film.
- a metal material is used as a wiring
- a semiconductor integrated circuit substrate is a substrate here.
- the electric appliance to be coated becomes the base material.
- gel formation on the substrate (base material) can be accomplished by adding a crosslinking agent to the dispersion or cooling or heating the dispersion applied to the substrate (base). It is carried out by using a gelling method (crosslinking). For example, when tetramethoxysilane is used as the gel material, water is added as an additive for gelation by hydrolysis and polymerization reactions, and when polyvinyl alcohol is used as the gel material, gelation is caused. An aqueous boric acid solution is added as a crosslinking agent. Further, when agarose is used as the gel material, the dispersion liquid applied to the substrate (base material) gels when cooled.
- crosslinking crosslinking
- Metals that can be filled by the plating method include pure metals such as Ag, Au, Cd, Co, Cr, Cu, Fe, Ni, Pb, Pd, Pt, Rh, Ru, Si, Sn, or ⁇ or Zn.
- Metal Ag— Cd, Ag— Co, Ag— Cu, Ag-Sn, Ag-Zn, Al— Mn, Au-Cu, Au— Ni, Au-Pd, Au-Sn, Cd— Sn, Cd-Zn, Co-Cu, Co-Fe, Co-Mo, Co— Ni, Co—Sn, Co—W, Cr—H, Cu—Ni, Cu—Pb, Cu—Sb, Cu—Sn, Cu—Zn, Fe—Mo, Fe—Ni, Fe—W, Fe—Zn, In—Sn, Ni—B, Ni—Mo, Ni—P, Ni—S, Ni—Sn, Ni—W, Ni—Zn or Sn—Zn alloys, MgO or Sn02 compounds, etc.
- the metal
- the plating solution may be an aqueous solution such as a metal sulfate, salt or pyrophosphate to be filled, or ethanol, N-methylformamide, formamide, acetone, ethyl acetate, benzene of these salts. , Dimethyl sulfoxide, N-dimethylformamide, acetonitrile, pyridine, tetrahydrofuran, or di-n-butyl ether.
- aqueous solution such as a metal sulfate, salt or pyrophosphate to be filled, or ethanol, N-methylformamide, formamide, acetone, ethyl acetate, benzene of these salts.
- the silver iodide bath Agl (0. 05 mol / L) + KI (2 mol ZL) can be used as the Ag plating solution
- the cyan bath KAu (CN) (0. 05molZL)
- sulfurous acid bath Na Au (S)
- Cu plating solution is Cu sulfuric acid bath: CuSO ⁇ ⁇ ⁇ (1. Omol
- Famic acid bath Ni (S NH) (1. Omol / L) + H BO (0 ⁇ 5 molZL) should be used
- alloy plating solutions include Ag-Sn alloy plating solutions: Agl (0.02 mol / L) + SnCl ⁇ 2 ⁇ 0 (0.18 mol / L) + Kl (2 mol / L) + KP
- ⁇ 1 A schematic cross-sectional view for explaining the operation of the metal material of the embodiment.
- 2 A schematic cross-sectional view for explaining the structure of the metal material of the embodiment.
- FIG. 4 is a transmission electron microscope image showing a specific example of the metal material of the embodiment.
- Fig. 4 (a) shows a transmission electron microscope image of a crystal grain with an electron beam incident orientation of 211> in a film in which an agarose gel is embedded in Cu
- Fig. 4 (b) shows an electron beam incident orientation in a film in which an agarose gel is embedded in Cu. Shows a transmission electron microscope image of the crystal grains of Gaku 011>.
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- Metallurgy (AREA)
- Mechanical Engineering (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- Internal Circuitry In Semiconductor Integrated Circuit Devices (AREA)
- Chemically Coating (AREA)
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Abstract
Description
Claims
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US11/908,840 US7759749B2 (en) | 2005-03-16 | 2006-02-07 | Metal material, and coating film and wiring for semiconductor integrated circuitry utilizing the metal material |
| JP2007508034A JPWO2006098101A1 (ja) | 2005-03-16 | 2006-02-07 | 金属材料、金属材料を用いた半導体集積回路用配線および被覆膜 |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2005-074306 | 2005-03-16 | ||
| JP2005074306 | 2005-03-16 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| WO2006098101A1 true WO2006098101A1 (ja) | 2006-09-21 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/JP2006/302091 Ceased WO2006098101A1 (ja) | 2005-03-16 | 2006-02-07 | 金属材料、金属材料を用いた半導体集積回路用配線および被覆膜 |
Country Status (3)
| Country | Link |
|---|---|
| US (1) | US7759749B2 (ja) |
| JP (1) | JPWO2006098101A1 (ja) |
| WO (1) | WO2006098101A1 (ja) |
Families Citing this family (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8395123B2 (en) * | 2010-09-22 | 2013-03-12 | Los Alamos National Security, Llc | Fluorescent single walled nanotube/silica composite materials |
| WO2013153255A1 (en) * | 2012-04-11 | 2013-10-17 | Kangas Veijo | Carbon nanotube - polysaccharide composite |
| US10224224B2 (en) | 2017-03-10 | 2019-03-05 | Micromaterials, LLC | High pressure wafer processing systems and related methods |
| US10622214B2 (en) | 2017-05-25 | 2020-04-14 | Applied Materials, Inc. | Tungsten defluorination by high pressure treatment |
| US10276411B2 (en) | 2017-08-18 | 2019-04-30 | Applied Materials, Inc. | High pressure and high temperature anneal chamber |
| JP6947914B2 (ja) | 2017-08-18 | 2021-10-13 | アプライド マテリアルズ インコーポレイテッドApplied Materials,Incorporated | 高圧高温下のアニールチャンバ |
| KR102585074B1 (ko) | 2017-11-11 | 2023-10-04 | 마이크로머티어리얼즈 엘엘씨 | 고압 프로세싱 챔버를 위한 가스 전달 시스템 |
| JP2021503714A (ja) | 2017-11-17 | 2021-02-12 | アプライド マテリアルズ インコーポレイテッドApplied Materials,Incorporated | 高圧処理システムのためのコンデンサシステム |
| CN111902929B (zh) | 2018-03-09 | 2025-09-19 | 应用材料公司 | 用于含金属材料的高压退火处理 |
| US10950429B2 (en) | 2018-05-08 | 2021-03-16 | Applied Materials, Inc. | Methods of forming amorphous carbon hard mask layers and hard mask layers formed therefrom |
| US10748783B2 (en) | 2018-07-25 | 2020-08-18 | Applied Materials, Inc. | Gas delivery module |
| WO2020117462A1 (en) | 2018-12-07 | 2020-06-11 | Applied Materials, Inc. | Semiconductor processing system |
| US11101174B2 (en) * | 2019-10-15 | 2021-08-24 | Applied Materials, Inc. | Gap fill deposition process |
| US11901222B2 (en) | 2020-02-17 | 2024-02-13 | Applied Materials, Inc. | Multi-step process for flowable gap-fill film |
| CN112927956B (zh) * | 2021-01-22 | 2022-04-01 | 中国科学院金属研究所 | 一种电接触材料及其制备方法 |
Citations (5)
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|---|---|---|---|---|
| JPS52155679A (en) * | 1976-06-21 | 1977-12-24 | Mitsubishi Rayon Co | Plastic moulding with metallic film and method of its manufacturing |
| JPH05320929A (ja) * | 1992-05-27 | 1993-12-07 | Suzuki Motor Corp | マグネシウム合金材の表面処理方法 |
| JP2002038233A (ja) * | 2000-07-26 | 2002-02-06 | Kobe Steel Ltd | アルミニウム合金箔地 |
| JP2003051463A (ja) * | 2001-05-29 | 2003-02-21 | Sharp Corp | 金属配線の製造方法およびその方法を用いた金属配線基板 |
| JP2004244674A (ja) * | 2003-02-13 | 2004-09-02 | Nitto Denko Corp | 孔内メッキ方法及び配線基板 |
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| JPH05198691A (ja) | 1991-11-15 | 1993-08-06 | Toshiba Corp | 半導体集積回路における多層配線構造 |
| JP3136889B2 (ja) | 1994-03-17 | 2001-02-19 | トヨタ自動車株式会社 | 複合材料用強化材成形体の製造方法 |
| JP3947443B2 (ja) * | 2002-08-30 | 2007-07-18 | Tdk株式会社 | 電子デバイス用基板および電子デバイス |
-
2006
- 2006-02-07 US US11/908,840 patent/US7759749B2/en not_active Expired - Fee Related
- 2006-02-07 WO PCT/JP2006/302091 patent/WO2006098101A1/ja not_active Ceased
- 2006-02-07 JP JP2007508034A patent/JPWO2006098101A1/ja not_active Withdrawn
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS52155679A (en) * | 1976-06-21 | 1977-12-24 | Mitsubishi Rayon Co | Plastic moulding with metallic film and method of its manufacturing |
| JPH05320929A (ja) * | 1992-05-27 | 1993-12-07 | Suzuki Motor Corp | マグネシウム合金材の表面処理方法 |
| JP2002038233A (ja) * | 2000-07-26 | 2002-02-06 | Kobe Steel Ltd | アルミニウム合金箔地 |
| JP2003051463A (ja) * | 2001-05-29 | 2003-02-21 | Sharp Corp | 金属配線の製造方法およびその方法を用いた金属配線基板 |
| JP2004244674A (ja) * | 2003-02-13 | 2004-09-02 | Nitto Denko Corp | 孔内メッキ方法及び配線基板 |
Also Published As
| Publication number | Publication date |
|---|---|
| US7759749B2 (en) | 2010-07-20 |
| JPWO2006098101A1 (ja) | 2008-08-21 |
| US20090029126A1 (en) | 2009-01-29 |
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