WO2024253426A1 - 전극 형성 방법 - Google Patents
전극 형성 방법 Download PDFInfo
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- WO2024253426A1 WO2024253426A1 PCT/KR2024/007710 KR2024007710W WO2024253426A1 WO 2024253426 A1 WO2024253426 A1 WO 2024253426A1 KR 2024007710 W KR2024007710 W KR 2024007710W WO 2024253426 A1 WO2024253426 A1 WO 2024253426A1
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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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- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C16/00—Chemical coating by decomposition of gaseous compounds, without leaving reaction products of surface material in the coating, i.e. chemical vapour deposition [CVD] processes
- C23C16/06—Chemical coating by decomposition of gaseous compounds, without leaving reaction products of surface material in the coating, i.e. chemical vapour deposition [CVD] processes characterised by the deposition of metallic material
-
- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C16/00—Chemical coating by decomposition of gaseous compounds, without leaving reaction products of surface material in the coating, i.e. chemical vapour deposition [CVD] processes
- C23C16/44—Chemical coating by decomposition of gaseous compounds, without leaving reaction products of surface material in the coating, i.e. chemical vapour deposition [CVD] processes characterised by the method of coating
- C23C16/455—Chemical coating by decomposition of gaseous compounds, without leaving reaction products of surface material in the coating, i.e. chemical vapour deposition [CVD] processes characterised by the method of coating characterised by the method used for introducing gases into reaction chamber or for modifying gas flows in reaction chamber
-
- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C16/00—Chemical coating by decomposition of gaseous compounds, without leaving reaction products of surface material in the coating, i.e. chemical vapour deposition [CVD] processes
- C23C16/44—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
- C23C16/45523—Pulsed gas flow or change of composition over time
- C23C16/45525—Atomic layer deposition [ALD]
- C23C16/45527—Atomic layer deposition [ALD] characterized by the ALD cycle, e.g. different flows or temperatures during half-reactions, unusual pulsing sequence, use of precursor mixtures or auxiliary reactants or activations
- C23C16/45529—Atomic layer deposition [ALD] characterized by the ALD cycle, e.g. different flows or temperatures during half-reactions, unusual pulsing sequence, use of precursor mixtures or auxiliary reactants or activations specially adapted for making a layer stack of alternating different compositions or gradient compositions
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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
- C23C16/45523—Pulsed gas flow or change of composition over time
- C23C16/45525—Atomic layer deposition [ALD]
- C23C16/45527—Atomic layer deposition [ALD] characterized by the ALD cycle, e.g. different flows or temperatures during half-reactions, unusual pulsing sequence, use of precursor mixtures or auxiliary reactants or activations
- C23C16/45536—Use of plasma, radiation or electromagnetic fields
- C23C16/4554—Plasma being used non-continuously in between ALD reactions
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- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10D—INORGANIC ELECTRIC SEMICONDUCTOR DEVICES
- H10D1/00—Resistors, capacitors or inductors
- H10D1/60—Capacitors
- H10D1/68—Capacitors having no potential barriers
- H10D1/692—Electrodes
- H10D1/696—Electrodes comprising multiple layers, e.g. comprising a barrier layer and a metal layer
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- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10N—ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10N97/00—Electric solid-state thin-film or thick-film devices, not otherwise provided for
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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
Definitions
- the present invention relates to a method for forming an electrode, and more particularly, to a method for forming an electrode capable of improving electrical characteristics.
- ruthenium which has excellent electrical conductivity, is deposited and formed.
- ruthenium is a very expensive material, there is a limit to forming the electrode by depositing only the ruthenium layer in terms of cost. Therefore, after depositing a thin ruthenium layer, a relatively inexpensive copper layer is deposited on the ruthenium layer to form the electrode.
- the copper layer has poor adhesion to the ruthenium layer.
- the copper layer has poor adhesion to the ruthenium layer.
- Patent document 1 Korean registered patent KR 10-0881728
- the present invention provides a method for forming an electrode including a ruthenium layer and a copper layer, which can suppress or prevent peeling of the copper layer.
- An embodiment of the present invention relates to a method for forming an electrode on a substrate, comprising: a step of forming a ruthenium layer on the substrate by performing a ruthenium layer formation cycle including a step of spraying a ruthenium-containing precursor n times; a step of forming a metal layer on the ruthenium layer by performing a metal layer formation cycle including a step of spraying a metal-containing precursor m times; and the ruthenium layer formation cycle and the metal layer formation cycle may be performed sequentially, or the ruthenium layer formation cycle and the metal layer formation cycle may be performed sequentially by repeating them two or more times.
- the above ruthenium layer formation cycle may include a step of exposing the ruthenium layer to hydrogen plasma.
- a step of exposing the ruthenium layer to hydrogen plasma may be included, which is performed between the ruthenium layer formation cycle and the metal layer formation cycle.
- the above metal layer formation cycle may include a step of exposing the metal layer to hydrogen plasma.
- This may be performed after the above metal layer formation cycle is completed, and may include a step of exposing the metal layer to hydrogen plasma.
- An embodiment of the present invention relates to a method for forming an electrode on a substrate, comprising: a step of forming a metal layer on the substrate by performing a metal layer formation cycle including a step of spraying a metal-containing precursor m times; a step of forming a ruthenium layer on the metal layer by performing a ruthenium layer formation cycle including a step of spraying a ruthenium-containing precursor n times; and the metal layer formation cycle and the ruthenium layer formation cycle may be performed sequentially, or the metal layer formation cycle and the ruthenium layer formation cycle may be performed sequentially by repeating them two or more times.
- a step of forming a copper layer on the ruthenium layer after sequentially repeating the above metal layer forming cycle and the ruthenium layer forming cycle twice or more; the step of forming the copper layer can be performed n times.
- the above metal layer formation cycle may include a step of exposing the metal layer to hydrogen plasma.
- a step of exposing the metal layer to hydrogen plasma may be included, which is performed between the above metal layer forming cycle and the above ruthenium layer forming cycle.
- the above ruthenium layer formation cycle may include a step of exposing the ruthenium layer to hydrogen plasma.
- This may be performed after the above ruthenium layer formation cycle is completed, and may include a step of exposing the ruthenium layer to hydrogen plasma.
- An embodiment of the present invention is a method for forming an electrode on a substrate, comprising: performing a cycle including a step of spraying a ruthenium-containing precursor and a metal-containing precursor, thereby forming a mixed layer containing ruthenium and a metal on the substrate; and the cycle can be repeated one or more times.
- a step of forming a copper layer on the mixed layer is included; and the step of forming the copper layer can be performed n times.
- the above cycle may include exposing a mixed layer containing ruthenium and a metal to a hydrogen plasma.
- a step of exposing the mixed layer containing the ruthenium and metal to hydrogen plasma may be included.
- the metal-containing precursor may include at least one metal selected from the group consisting of tungsten, iridium, osmium, rhodium, platinum, silver, rhenium and palladium.
- the adhesive strength between the ruthenium layer and the copper layer can be improved. Accordingly, the copper layer can be suppressed or prevented from peeling or separating from the ruthenium layer. Accordingly, the resistivity of the electrode can be lowered and the electrical conductivity can be improved.
- FIG. 1 is a conceptual diagram illustrating a semiconductor device including an electrode formed by a method according to embodiments of the present invention.
- FIG. 2 is a drawing illustrating a state in which a lower electrode according to the first embodiment of the present invention is formed on a substrate.
- Figures 3 (a) to (c) are process diagrams sequentially showing a method for forming a ruthenium layer in a lower electrode according to the first embodiment of the present invention.
- Figures 4 (a) to 4 (c) are process diagrams sequentially showing a method of forming a metal layer in a lower electrode according to the first embodiment of the present invention.
- FIG. 5 is a drawing showing a method for forming a copper layer in a lower electrode according to the first embodiment of the present invention.
- FIG. 6 is a drawing illustrating a state in which a lower electrode according to a second embodiment of the present invention is formed on a substrate.
- FIG. 7 is a drawing illustrating a state in which a lower electrode according to a third embodiment of the present invention is formed on a substrate.
- the present invention relates to a method for forming an electrode of a semiconductor device. More specifically, the present invention relates to a method for forming an electrode of a semiconductor device which can improve the adhesive strength between a ruthenium layer and a copper layer in forming an electrode including a ruthenium layer and a copper layer.
- FIG. 1 is a conceptual diagram illustrating a semiconductor device including an electrode formed by a method according to embodiments of the present invention.
- FIG. 2 is a diagram illustrating a state in which a lower electrode according to a first embodiment of the present invention is formed on a substrate.
- the semiconductor device may be, for example, a capacitor.
- a capacitor may include, as illustrated in FIG. 1, a substrate (S), a lower electrode (100) formed on the substrate (S), a dielectric layer (200) formed on the lower electrode (100), and an upper electrode (300) formed on the dielectric layer (200).
- the substrate (S) may be a wafer or glass.
- the substrate (S) may be any one of a Si wafer, a GaAs wafer, and a SiGe wafer.
- various types of wafers may be used as the substrate (S) in addition to the types of wafers described above.
- the dielectric layer (200) may be formed of a dielectric material including a metal oxide.
- the dielectric layer (200) may be formed of any one of ZrO 2 , Al 2 O 3 , TiO 2 , TaO 2 , and HfO 2 .
- At least one of the lower electrode (100) and the upper electrode (300) is formed by a method according to embodiments and may include a copper (Cu) layer (130) and a sublayer formed on the lower side of the copper layer (130).
- Cu copper
- the underlying layer may be at least one of a ruthenium (Ru) layer and a metal layer including a metal other than ruthenium (Ru).
- the underlying layer may be a mixed layer including ruthenium (Ru) and a metal other than ruthenium (Ru).
- the lower electrode (100) may include a ruthenium layer (110) formed on a substrate (S), a copper layer (130) formed on the ruthenium layer (110), and a metal layer (120) formed between the ruthenium layer (110) and the copper layer (130).
- the metal layer (120) may be at least one layer of tungsten (W), iridium (Ir), osmium (Os), rhodium (Rh), platinum (Pt), silver (Ag), rhenium (Re), and palladium (Pd).
- the metal layer (120) may be at least one of a tungsten layer, an iridium layer, an osmium layer, a rhodium layer, a platinum layer, a silver layer, a rhenium layer, and a palladium layer.
- the metal layer (120) is a tungsten layer.
- the drawing symbol for the tungsten layer is described as '120', the same as that for the metal layer.
- the lower electrode (100) may include a ruthenium layer (110) formed on a substrate (S), a copper layer (130) formed on the ruthenium layer (110), and a tungsten layer (120) formed between the ruthenium layer (110) and the copper layer (130).
- Ruthenium (Ru) is a material with excellent electrical conductivity.
- ruthenium is a very expensive material, it is difficult to form a thick ruthenium layer in terms of cost. Therefore, after forming a thin ruthenium layer, a copper layer is laminated on the ruthenium layer to form an electrode.
- the copper layer does not have good adhesion to the ruthenium layer. In other words, the adhesion between the copper layer and the ruthenium layer is weak. Therefore, there is a problem of the copper layer being peeled off or separated from the ruthenium layer, which increases the resistance of the electrode and decreases the electrical conductivity.
- the lower electrode (100) according to the first embodiment includes a ruthenium layer (110), a copper layer (130) formed on the ruthenium layer (110), and a tungsten layer (120) formed between the ruthenium layer (110) and the copper layer (130).
- FIGS. 3 are process drawings sequentially showing a method for forming a ruthenium layer in a lower electrode according to a first embodiment of the present invention.
- (a) to (c) of FIGS. 4 are process drawings sequentially showing a method for forming a tungsten layer in a lower electrode according to a first embodiment of the present invention.
- FIG. 5 is a drawing illustrating a method for forming a copper layer in a lower electrode according to a first embodiment of the present invention.
- a ruthenium layer (110) is formed on the substrate (S).
- the ruthenium layer (110) may be formed, for example, by an atomic layer deposition method.
- the step of forming the ruthenium layer (110) may include a step of spraying a precursor containing ruthenium (Ru) toward the substrate (S) to deposit the ruthenium layer (110) on the substrate (S) (ruthenium-containing precursor spraying step) and a step of exposing the ruthenium layer (110) to hydrogen plasma (hydrogen plasma exposure step).
- the 'ruthenium-containing precursor injection step - hydrogen plasma exposure step' may be performed as one cycle (hereinafter, ruthenium layer formation cycle (CY Ru )). That is, the step of forming the ruthenium layer (110) includes a ruthenium layer formation cycle (CY Ru ), and the ruthenium layer formation cycle (CY Ru ) may include a step of injecting a ruthenium-containing precursor and a step of exposing the ruthenium layer (110) to hydrogen plasma.
- CY Ru ruthenium layer formation cycle
- the step of forming the ruthenium layer (110) may further include at least one of a step of injecting a purge gas between the ruthenium-containing precursor injection step and the hydrogen plasma exposure step (the first purge step) and a step of injecting a purge gas after the hydrogen plasma exposure step (the second purge step).
- argon (Ar) gas may be used as the purge gas.
- 'ruthenium-containing precursor injection step - first purge step - hydrogen plasma exposure step - second purge step' may be one cycle (ruthenium layer formation cycle (CY Ru )).
- the step of forming the ruthenium layer (110) includes a ruthenium layer formation cycle (CY Ru ), and the ruthenium layer formation cycle (CY Ru ) may include a ruthenium-containing precursor injection step, a first purge step, a hydrogen plasma exposure step, and a second purge step. At this time, at least one of the first purge step and the second purge step may be omitted in the ruthenium layer formation cycle (CY Ru ).
- a precursor containing or including ruthenium (Ru) is sprayed toward the substrate (S) as shown in (a) of Fig. 3. That is, the ruthenium-containing precursor is sprayed into the interior of the chamber into which the substrate (S) is loaded.
- the precursor raw material containing ruthenium (Ru) for example, ethylcyclopentadienyl ruthenium ((EtCp) 2 Ru)(Bis(ethylcyclopentadienyl)ruthenium
- the precursor raw material containing ruthenium (Ru) is not limited to the materials described above, and various precursor raw materials containing ruthenium (Ru) can be used.
- ruthenium layer (110) which is a film or layer containing ruthenium, is deposited as shown in (a) of FIG. 3.
- a purge gas is injected into the chamber where the substrate (S) is loaded to perform the first purge.
- the purge gas can be, for example, argon (Ar) gas.
- the ruthenium layer (110) is exposed to hydrogen plasma as shown in (b) of FIG. 3. That is, hydrogen plasma is generated inside the chamber in which the substrate (S) on which the ruthenium layer (110) is formed is loaded, thereby exposing the ruthenium layer (110) to the hydrogen plasma.
- RF Radio Frequency
- a gas containing hydrogen (H 2 ) is used as the gas for generating plasma. More specifically, the gas for generating plasma may be hydrogen (H 2 ) gas.
- plasma containing hydrogen (H 2 ) i.e., hydrogen plasma
- the substrate (S) on which the ruthenium layer (110) is formed is exposed to the hydrogen plasma.
- the hydrogen plasma exposure step is a step of generating hydrogen plasma as described above to expose the ruthenium layer (110) to hydrogen plasma. Accordingly, the hydrogen plasma exposure step may be named a hydrogen plasma generation step.
- the ruthenium-containing precursor may contain an impurity that increases the resistivity of the ruthenium layer (110).
- the ruthenium-containing precursor may contain, in addition to ruthenium (Ru), at least one ligand of C (carbon) and O (oxygen).
- the ruthenium layer (110) deposited by spraying the ruthenium-containing precursor may contain or include at least one ligand of C (carbon) and O (oxygen), and this ligand acts as an impurity that increases the resistivity of the ruthenium layer (110). Therefore, it is desirable to remove the impurities included in the ruthenium layer (110).
- the ruthenium layer (110) is exposed to hydrogen plasma to remove impurities.
- the impurities included in the ruthenium layer (110) react with hydrogen. Accordingly, at least one impurity among C (carbon) and O (oxygen) included in the ruthenium layer (110) reacts with hydrogen to become a gas and escapes from the ruthenium layer (110). Accordingly, the content of at least one impurity among C (carbon) and O (oxygen) included in the ruthenium layer (110) decreases. As a result, the resistivity of the ruthenium layer (110) can be reduced.
- a second purge is performed by injecting a purge gas into the chamber in which the substrate (S) is loaded.
- the purge gas can be the same gas used in the first purge, and for example, argon (Ar) gas can be used.
- the process including the ruthenium-containing precursor injection step, the first purge step, the hydrogen plasma exposure step, and the second purge step as described above can be regarded as one ruthenium layer formation cycle (CY Ru ). That is, the cycle (CY Ru ) for forming the ruthenium layer (110) can include 'ruthenium-containing precursor injection step - first purge step - hydrogen plasma exposure step - second purge step'. Then, the ruthenium layer formation cycle (CY Ru ) can be performed multiple times in succession to form a ruthenium layer (110) having a target thickness.
- ruthenium layer formation cycle (CY Ru ) is performed multiple times, a plurality of ruthenium layers (110) can be stacked on the substrate (S) as in (c) of FIG. 3 to form one ruthenium layer (110) as in FIG. 2.
- the step of forming the tungsten layer (120) may include a step of forming a tungsten layer (120) on the ruthenium layer (110) by injecting a precursor containing tungsten (W) toward the substrate (S) (tungsten-containing precursor injection step) and a step of exposing the tungsten layer (120) to hydrogen plasma (hydrogen plasma exposure step).
- the 'tungsten-containing precursor injection step - hydrogen plasma exposure step' may be performed as one cycle (hereinafter, tungsten layer formation cycle (CY W )). That is, the step of forming the tungsten layer (120) includes a tungsten layer formation cycle (CY W ), and the tungsten layer formation cycle (CY W ) may include a step of injecting a tungsten-containing precursor and a step of exposing the tungsten layer (120) to hydrogen plasma.
- tungsten layer formation cycle CY W
- the step of forming the tungsten layer (120) includes a tungsten layer formation cycle (CY W )
- the tungsten layer formation cycle (CY W ) may include a step of injecting a tungsten-containing precursor and a step of exposing the tungsten layer (120) to hydrogen plasma.
- the step of forming the tungsten layer (120) may further include at least one of a step of injecting a purge gas between the tungsten-containing precursor injection step and the hydrogen plasma exposure step (first purge step) and a step of injecting a purge gas after the hydrogen plasma exposure step (second purge step).
- 'tungsten-containing precursor injection step - first purge step - hydrogen plasma exposure step - second purge step' may be one cycle (tungsten layer formation cycle (CY W ).
- the step of forming the tungsten layer (120) includes a tungsten layer formation cycle (CY W ), and the tungsten layer formation cycle (CY W ) may include a tungsten-containing precursor injection step, a first purge step, a hydrogen plasma exposure step, and a second purge step. At this time, at least one of the first purge step and the second purge step may be omitted in the tungsten layer formation cycle (CY W ).
- tungsten layer formation cycle (CY W ) is described in more detail. At this time, any description that overlaps with the description of the ruthenium layer formation cycle (CY Ru ) is omitted or briefly described.
- a precursor containing or including tungsten (W) is sprayed toward the ruthenium layer (110) as shown in (a) of FIG. 4. That is, the precursor containing tungsten is sprayed into the interior of the chamber into which the substrate (S) is loaded.
- the precursor raw material containing tungsten (W) may be, for example, tungsten hexafluoride (WF 6 ).
- WF 6 tungsten hexafluoride
- the precursor raw material containing tungsten (W) is not limited to the above-described example, and various precursor raw materials containing tungsten (W) may be used.
- the precursor containing tungsten (W) When the precursor containing tungsten (W) is sprayed, the precursor is deposited or adsorbed on the ruthenium layer (110), so that a tungsten layer (120), which is a film or layer containing tungsten, is deposited as shown in (a) of FIG. 4.
- a purge gas is sprayed into the chamber in which the substrate (S) is loaded to perform a first purge.
- the same gas as the purge gas used in the ruthenium layer formation cycle (CY Ru ) can be used, and for example, argon (Ar) gas can be used as the purge gas.
- the tungsten layer (120) is exposed to hydrogen plasma as shown in (b) of Fig. 4. Since the hydrogen plasma is generated in the same manner as described in the ruthenium layer formation cycle (CY Ru ), its description is omitted.
- the tungsten-containing precursor may contain impurities that increase resistivity, for example, at least one impurity among C (carbon) and O (oxygen). Accordingly, the tungsten layer (120) formed by spraying the tungsten-containing precursor may contain or include at least one impurity among C (carbon) and O (oxygen), and such impurities act as impurities that increase resistivity of the tungsten layer (120). Therefore, it is desirable to remove the impurities included in the tungsten layer (120).
- the tungsten layer (120) is exposed to hydrogen plasma to remove impurities.
- the impurities included in the tungsten layer (120) react with hydrogen. That is, at least one impurity among C (carbon) and O (oxygen) included in the tungsten layer (120) reacts with hydrogen to become a gas and escapes from the tungsten layer (120). Accordingly, the content of at least one impurity among C (carbon) and O (oxygen) included in the tungsten layer (120) decreases. As a result, the resistivity of the tungsten layer (120) can be reduced.
- a second purge is performed by injecting a purge gas, for example, argon (Ar) gas, into the chamber in which the substrate (S) is loaded.
- a purge gas for example, argon (Ar) gas
- the process including the tungsten-containing precursor injection step, the first purge step, the hydrogen plasma exposure step, and the second purge step as described above can be one tungsten layer formation cycle (CY W ). That is, the cycle (CY W ) for forming the tungsten layer (120) can include 'tungsten-containing precursor injection step - first purge step - hydrogen plasma exposure step - second purge step'. Then, the tungsten layer formation cycle (CY W ) can be performed once or twice or more consecutively to form a tungsten layer (120) having a target thickness.
- multiple tungsten layers (120) are shown separately in order to distinguish between tungsten layers (120) formed by multiple tungsten layer formation cycles (CY W ), but the multiple stacked tungsten layers (120) may be integral.
- the step of forming the ruthenium layer (110) and the tungsten layer (120) was described as including the step of exposing the ruthenium layer (110) and the tungsten layer (120) to hydrogen plasma.
- the step of forming the ruthenium layer (110) and the tungsten layer (120) may not include the step of exposing the ruthenium layer (110) and the tungsten layer (120) to hydrogen plasma. That is, in forming the ruthenium layer (110) and the tungsten layer (120), the step of exposing the ruthenium layer (110) and the tungsten layer (120) to hydrogen plasma may be omitted.
- a copper layer (130) is formed on the tungsten layer (120).
- the copper layer (130) can be formed, for example, by a chemical vapor deposition (CVD) method.
- CVD chemical vapor deposition
- a precursor raw material containing copper (Cu) is sprayed into a chamber in which a substrate (S) on which a ruthenium layer (110) and a tungsten layer (120) are formed is loaded (copper-containing precursor spraying step).
- the temperature of the substrate (S) to be, for example, 150°C to 300°C.
- the precursor raw material containing copper (Cu) can use, for example, hfac (hexafluoroacetylacetonate) Cu (I) DMB (3,3-dimethyl-1-butene).
- the precursor raw material containing copper (Cu) is not limited to the above-described example, and various precursor raw materials containing copper (Cu) can be used.
- the copper layer (130) is formed by being deposited on the tungsten layer (120). That is, before forming the copper layer (130), the tungsten layer (120) is formed on the ruthenium layer (110), and the copper layer (130) is formed on the tungsten layer (120). In other words, the copper layer (130) is not formed directly on the ruthenium layer (110), but after forming the tungsten layer (120) on the ruthenium layer (110), the copper layer (130) is formed on the tungsten layer (120). Accordingly, the copper layer (130) does not directly contact the ruthenium layer (110), but contacts the tungsten layer (120). Copper has a stronger bonding force with tungsten than ruthenium.
- the adhesive strength of the copper layer (130) with the underlying tungsten layer (120) increases. Accordingly, the copper layer (130) can be suppressed or prevented from peeling or separating from the underlying layer. That is, the copper layer (130) can be suppressed or prevented from peeling or separating from the tungsten layer (120).
- the electrical characteristics of the lower electrode (100) formed by stacking the ruthenium layer (110), the tungsten layer (120), and the copper layer (130) can be improved. That is, the resistance of the lower electrode (100) can be reduced, and the electrical conductivity can be improved.
- a ruthenium layer (110) is formed by continuously performing a ruthenium layer formation cycle (CY Ru ) a preset number of times, and then a tungsten layer formation cycle (CY W ) is continuously performed a preset number of times to form a tungsten layer (120).
- the lower electrode (100) has a structure including one ruthenium layer (110) formed by performing a plurality of ruthenium layer formation cycles (CY Ru ), one tungsten layer (120) formed by performing a plurality of tungsten layer formation cycles (CY W ), and a copper layer (130) formed on the tungsten layer (120).
- the present invention is not limited thereto, and the ruthenium layer formation cycle (CY Ru ) and the tungsten layer formation cycle (CY W ) can be alternately performed multiple times. That is, 'ruthenium layer formation cycle (CY Ru ), tungsten layer formation cycle (CY W ), ruthenium layer formation cycle (CY Ru ), tungsten layer formation cycle (CY W ), ruthenium layer formation cycle (CY Ru ), tungsten layer formation cycle (CY W ), ... , tungsten layer formation cycle (CY W )' can be performed.
- the lower electrode (100) may include a plurality of ruthenium layers (110), a plurality of tungsten layers (120), and a copper layer (130) formed on the uppermost tungsten layer (120), and may be provided with a structure in which the ruthenium layers (110) and the tungsten layers (120) are alternately laminated.
- FIG. 6 is a drawing illustrating a state in which a lower electrode according to a second embodiment of the present invention is formed on a substrate.
- the lower electrode (100) in which the tungsten layer (120) is formed between the ruthenium layer (110) and the copper layer (130) is described as an example.
- the present invention is not limited thereto, and the tungsten layer (120) may be formed on the lower side of the ruthenium layer (110) as in the second embodiment illustrated in FIG. 6. That is, the tungsten layer (120) may be formed first, and then the ruthenium layer (110) may be formed on the tungsten layer (120), and then the copper layer (130) may be formed on the ruthenium layer (110).
- the lower electrode (100) according to the second embodiment may include a tungsten layer (120) formed on a substrate (S), a ruthenium layer (110) formed on the tungsten layer (120), and a copper layer (130) formed on the ruthenium layer (110).
- the method of forming the tungsten layer (120), the ruthenium layer (110), and the copper layer (130) may be similar or identical to the method described in the first embodiment described above, except that the order of forming each layer is different.
- the method of forming the copper layer (130) may be similar or identical to the method of forming the copper layer (130) described above. Therefore, in describing the method of forming the lower electrode (100) according to the second embodiment below, any content that overlaps with the content described in the first embodiment will be omitted or briefly described.
- a tungsten (W)-containing precursor is sprayed toward a substrate (S), and a tungsten layer (120) is deposited on the substrate (S).
- hydrogen plasma is generated to expose the tungsten layer (120) to the hydrogen plasma.
- impurities contained in the tungsten layer (120) can be removed.
- a tungsten layer formation cycle (CY W ) including the step of spraying the tungsten (W)-containing precursor and the step of exposing the tungsten layer (120) to hydrogen plasma is performed multiple times, so that a tungsten layer (120) having a desired thickness can be formed on the substrate (S).
- the step of exposing the tungsten layer (120) to hydrogen plasma can be omitted.
- a ruthenium (Ru)-containing precursor is sprayed toward the tungsten layer (120), and a ruthenium layer (110) is deposited on the tungsten layer (120).
- hydrogen plasma is generated to expose the ruthenium layer (110) to the hydrogen plasma.
- impurities contained in the ruthenium layer (110) can be removed.
- a copper layer (130) is formed on the ruthenium layer (110).
- the step of forming the ruthenium layer (110) includes the step of spraying a ruthenium (Ru)-containing precursor as described above and the step of exposing the ruthenium layer (110) to hydrogen plasma.
- a ruthenium (Ru)-containing precursor as described above
- the step of exposing the ruthenium layer (110) to hydrogen plasma when the ruthenium layer (110) is exposed to hydrogen plasma, some of the tungsten atoms contained in the tungsten layer (120) may diffuse or move into the ruthenium layer (110). That is, not only are impurities contained in the ruthenium layer (110) removed by the hydrogen plasma, but also some of the tungsten atoms contained in the tungsten layer (120) may diffuse or move into the ruthenium layer (110).
- the ruthenium layer (110) according to the second embodiment may further contain tungsten (W) in addition to ruthenium (Ru).
- the ruthenium layer (110) may be doped with tungsten (W). Since the ruthenium layer (110) doped with tungsten (W) contains tungsten (W) in addition to ruthenium (Ru), this ruthenium layer (110) can be defined as a ruthenium layer containing tungsten.
- the copper layer (130) on the ruthenium layer (110) containing ruthenium and tungsten, it is possible to suppress or prevent the copper layer (130) from being peeled or separated from the underlying ruthenium layer (110). That is, compared to the case where the copper layer (130) is directly formed on the ruthenium layer (110) that is not doped with tungsten, when the copper layer (130) is formed on the ruthenium layer (110) that is doped with tungsten as in the second embodiment, the adhesive strength of the copper layer (130) to the underlying layer increases. This is because tungsten, which has a higher bonding strength with copper than ruthenium, is doped or contained in the ruthenium layer (110).
- the electrical characteristics of the lower electrode (100) formed by stacking a tungsten layer (120), a ruthenium layer (110), and a copper layer (130) can be improved.
- the lower electrode (100) has a structure including one tungsten layer (120) formed by performing a plurality of tungsten layer formation cycles (CY W ), one ruthenium layer (110) formed by performing a plurality of ruthenium layer formation cycles (CY Ru ), and a copper layer (130) formed on the ruthenium layer (110).
- the present invention is not limited thereto, and the tungsten layer formation cycle (CY W ) and the ruthenium layer formation cycle (CY Ru ) can be alternately performed multiple times. That is, 'tungsten layer formation cycle (CY W ), ruthenium layer formation cycle (CY Ru ), tungsten layer formation cycle (CY W ), ruthenium layer formation cycle (CY Ru ), tungsten layer formation cycle (CY W ), ruthenium layer formation cycle (CY Ru ), ... , ruthenium layer formation cycle (CY Ru )' can be performed.
- the lower electrode (100) may include a plurality of tungsten layers (120), a plurality of ruthenium layers (110), and a copper layer (130) formed on the uppermost ruthenium layer (110), and may be provided with a structure in which the tungsten layers (120) and the ruthenium layers (110) are alternately laminated.
- each of the ruthenium layer formation cycle (CY Ru ) and the tungsten layer formation cycle (CY W ) includes a hydrogen plasma exposure step.
- the present invention is not limited thereto, and each of the ruthenium layer formation cycle (CY Ru ) and the tungsten layer formation cycle (CY W ) may not include a hydrogen plasma exposure step, and the hydrogen plasma exposure step may be performed separately.
- the ruthenium layer formation cycle (CY Ru ) includes a 'ruthenium-containing precursor injection step - a purge step'
- the tungsten layer formation cycle (CY W ) includes a 'tungsten-containing precursor injection step - a purge step', and these two cycles may not include a hydrogen plasma exposure step.
- hydrogen plasma may be generated between the ruthenium layer formation cycle (CY Ru ) and the tungsten layer formation cycle (CY W ) to expose the ruthenium layer to the hydrogen plasma, and after the tungsten layer formation cycle (CY W ) is terminated, hydrogen plasma may be generated to expose the tungsten layer to the hydrogen plasma.
- each of the ruthenium layer formation cycle (CY Ru ) and the tungsten layer formation cycle (CY W ) may include a hydrogen plasma exposure step, and the hydrogen plasma exposure step may be further performed separately. That is, in the first and second embodiments, the ruthenium layer formation cycle (CY Ru ) includes 'ruthenium-containing precursor injection step - 1st purge step - plasma exposure step - 2nd purge step', and the tungsten layer formation cycle (CY W ) includes 'tungsten-containing precursor injection step - 1st purge step - plasma exposure step - 2nd purge step'.
- the step of exposing the ruthenium layer to hydrogen plasma may be included between the ruthenium layer formation cycle (CY Ru ) and the tungsten layer formation cycle (CY W ), and the step of exposing the tungsten layer to hydrogen plasma after the tungsten layer formation cycle (CY W ) is terminated.
- the step of exposing the tungsten layer to hydrogen plasma between the tungsten layer formation cycle (CY W ) and the ruthenium layer formation cycle (CY Ru ), and the step of exposing the ruthenium layer to hydrogen plasma after the ruthenium layer formation cycle (CY Ru ) is terminated may be included.
- the metal layer was described as a tungsten layer.
- the metal layer may be any one of an iridium layer, an osmium layer, a rhodium layer, a platinum layer, a silver layer, a rhenium layer, and a palladium layer.
- a precursor including any one of iridium (Ir), osmium (Os), rhodium (Rh), platinum (Pt), silver (Ag), rhenium (Re), and palladium (Pd) may be sprayed to form the metal layer.
- FIG. 7 is a drawing illustrating a state in which a lower electrode according to a third embodiment of the present invention is formed on a substrate.
- the lower electrode (100) in which two different layers, that is, a ruthenium layer (110) and a tungsten layer (120), are laminated on the lower side of the copper layer (130) has been described.
- the present invention is not limited thereto, and one underlying layer may be formed on the lower side of the copper layer (130), and the one underlying layer may be a layer containing ruthenium (Ru) and tungsten (W) (hereinafter, referred to as a mixed layer (140)).
- the lower electrode (100) according to the third embodiment may include a mixed layer (140) formed on a substrate (S) and containing ruthenium (Ru) and tungsten (W), and a copper layer (130) formed on the mixed layer (140).
- a mixed layer (140) formed on a substrate (S) and containing ruthenium (Ru) and tungsten (W), and a copper layer (130) formed on the mixed layer (140).
- the method for forming the mixed layer (140) may be similar or identical to the method for forming the ruthenium layer (110) and the method for forming the tungsten layer (120) described in the first and second embodiments, except that precursors containing ruthenium (Ru) and tungsten (W) are sprayed together in the precursor spraying step.
- the method for forming the copper layer (130) may be similar or identical to the method described in the first and second embodiments. Therefore, in describing the method for forming the lower electrode (100) according to the third embodiment below, any content that overlaps with the content described in the first and second embodiments will be omitted or briefly described.
- a ruthenium (Ru)-containing precursor and a tungsten (W)-containing precursor are sprayed toward the substrate (S).
- the ruthenium-containing precursor and the tungsten-containing precursor may be individually prepared and sprayed, or the ruthenium-containing precursor and the tungsten-containing precursor may be mixed and sprayed.
- a mixed layer (140) which is a layer containing ruthenium and tungsten, is deposited on the substrate (S).
- hydrogen plasma is generated to expose the mixed layer (140) to the hydrogen plasma. Accordingly, impurities contained in the mixed layer (140) can be removed.
- a mixed layer formation cycle including the step of spraying the ruthenium-containing precursor and the tungsten-containing precursor and the step of exposing the mixed layer (140) to the hydrogen plasma is performed multiple times, so that a mixed layer (140) having a desired thickness can be formed on the substrate (S).
- the mixed layer (140) contains ruthenium and tungsten
- the mixed layer can be defined as a tungsten and ruthenium-containing layer.
- a copper layer (130) is formed on the mixed layer (140).
- the copper layer (130) is formed by being deposited on the mixed layer (140) containing ruthenium and tungsten. Accordingly, the copper layer (130) can be suppressed or prevented from being peeled or separated from the mixed layer (140), which is the underlying layer. That is, compared to the case where the copper layer (130) is directly formed on the ruthenium layer (110) that does not contain tungsten, when the copper layer (130) is formed on the mixed layer (140) that contains tungsten in addition to ruthenium as in the third embodiment, the adhesive strength of the copper layer (130) to the underlying layer increases.
- the copper layer (130) can be suppressed or prevented from being peeled or separated from the mixed layer (140), which is the underlying layer. Therefore, the electrical characteristics of the lower electrode (100) formed by stacking the mixed layer (140) and the copper layer (130) can be improved.
- the mixed layer formation cycle (CY m ) includes a hydrogen plasma exposure step.
- the present invention is not limited thereto, and the mixed layer formation cycle (CY m ) may not include the hydrogen plasma exposure step, and the hydrogen plasma exposure step may be performed separately. That is, the mixed layer formation cycle (CY m ) may include a 'ruthenium-containing precursor and tungsten-containing precursor injection step - purge step', and after the mixed layer formation cycle (CY m ) is terminated, hydrogen plasma may be generated to expose the mixed layer to the hydrogen plasma.
- the mixed layer formation cycle (CY m ) may include a hydrogen plasma exposure step, and after the mixed layer formation cycle (CY m ) is terminated, hydrogen plasma may be generated to expose the mixed layer to hydrogen plasma once again.
- the formation of the lower electrode (100) of the semiconductor element or capacitor by the method according to the embodiments has been described.
- the present invention is not limited thereto, and the upper electrode (300) of the semiconductor element or capacitor may be formed by the electrode formation method according to the embodiments, or both the lower electrode (100) and the upper electrode (300) may be formed.
- the electrode formation method according to the embodiments may be applied to form various electrodes or conductive films other than the upper electrode (300) and the lower electrode (100) among the components of the semiconductor element.
- a tungsten layer (120) is formed between the ruthenium layer (110) and the copper layer (130), or a tungsten-doped ruthenium layer (110) or a mixed layer (140) containing ruthenium and tungsten is formed, and then a copper layer (130) is formed on top of the ruthenium layer (110). Accordingly, the adhesive strength between the copper layer (130) and the underlying layer can be improved. Accordingly, the copper layer (130) can be suppressed or prevented from being peeled off or separated from the underlying layer, and thus, the electrical characteristics of the electrode can be improved.
- the adhesive strength between the ruthenium layer and the copper layer can be improved. Accordingly, the copper layer can be suppressed or prevented from peeling or separating from the ruthenium layer. Accordingly, the resistivity of the electrode can be lowered and the electrical conductivity can be improved.
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Abstract
Description
Claims (17)
- 기판 상에 전극을 형성하는 방법으로서,루테늄 함유 전구체를 분사하는 단계를 포함하는 루테늄층 형성 사이클을 n회 실시하여 기판 상에 루테늄층을 형성하는 단계;금속 함유 전구체를 분사하는 단계를 포함하는 금속층 형성 사이클을 m회 실시하여, 상기 루테늄층 상에 금속층을 형성하는 단계;를 포함하고,상기 루테늄층 형성 사이클과 상기 금속층 형성 사이클을 순차적으로 실시하거나, 상기 루테늄층 형성 사이클과 상기 금속층 형성 사이클을 순차적으로 2회 이상 반복하여 실시하는 전극 형성 방법.
- 청구항 1에 있어서,상기 루테늄층 형성 사이클과 상기 금속층 형성 사이클을 순차적으로 2회 이상 반복하여 실시한 후에, 상기 금속층 상에 구리층을 형성하는 단계;를 포함하고,상기 구리층을 형성하는 단계를 n회 실시하는 전극 형성 방법.
- 청구항 1에 있어서,상기 루테늄층 형성 사이클은 루테늄층을 수소 플라즈마에 노출시키는 단계를 포함하는 전극 형성 방법.
- 청구항 1에 있어서,상기 루테늄층 형성 사이클과 금속층 형성 사이클 사이에 실시하며, 상기 루테늄층을 수소 플라즈마에 노출시키는 단계를 포함하는 전극 형성 방법.
- 청구항 1에 있어서,상기 금속층 형성 사이클은 금속층을 수소 플라즈마에 노출시키는 단계를 포함하는 전극 형성 방법.
- 청구항 1에 있어서,상기 금속층 형성 사이클을 종료한 후에 실시하며, 상기 금속층을 수소 플라즈마에 노출시키는 단계를 포함하는 전극 형성 방법.
- 기판 상에 전극을 형성하는 방법으로서,금속 함유 전구체를 분사하는 단계를 포함하는 금속층 형성 사이클을 m회 실시하여 기판 상에 금속층을 형성하는 단계;루테늄 함유 전구체를 분사하는 단계를 포함하는 루테늄층 형성 사이클을 n회 실시하여, 상기 금속층 상에 루테늄층을 형성하는 단계;를 포함하고,상기 금속층 형성 사이클과 상기 루테늄층 형성 사이클을 순차적으로 실시하거나, 상기 금속층 형성 사이클과 상기 루테늄층 형성 사이클을 순차적으로 2회 이상 반복하여 실시하는 전극 형성 방법.
- 청구항 7에 있어서,상기 금속층 형성 사이클과 상기 루테늄층 형성 사이클을 순차적으로 2회 이상 반복하여 실시한 후에, 상기 루테늄층 상에 구리층을 형성하는 단계;를 포함하고,상기 구리층을 형성하는 단계를 n회 실시하는 전극 형성 방법.
- 청구항 7에 있어서,상기 금속층 형성 사이클은 금속층을 수소 플라즈마에 노출시키는 단계를 포함하는 전극 형성 방법.
- 청구항 7에 있어서,상기 금속층 형성 사이클과 상기 루테늄층 형성 사이클 사이에 실시하며, 금속층을 수소 플라즈마에 노출시키는 단계를 포함하는 전극 형성 방법.
- 청구항 7에 있어서,상기 루테늄층 형성 사이클은 루테늄층을 수소 플라즈마에 노출시키는 단계를 포함하는 전극 형성 방법.
- 청구항 7에 있어서,상기 루테늄층 형성 사이클을 종료한 후에 실시하며, 상기 루테늄층을 수소 플라즈마에 노출시키는 단계를 포함하는 전극 형성 방법.
- 기판 상에 전극을 형성하는 방법으로서,루테늄 함유 전구체와 금속 함유 전구체를 분사하는 단계를 포함하는 사이클을 실시하여, 기판 상에 루테늄 및 금속을 함유하는 혼합층을 형성하는 단계;를 포함하고,상기 사이클을 1회 이상 반복하여 실시하는 전극 형성 방법.
- 청구항 13에 있어서,상기 사이클을 2회 이상 반복하여 실시한 후에, 상기 혼합층 상에 구리층을 형성하는 단계;를 포함하고,상기 구리층을 형성하는 단계를 n회 실시하는 전극 형성 방법.
- 청구항 13에 있어서,상기 사이클은 루테늄 및 금속을 함유하는 혼합층을 수소 플라즈마에 노출시키는 단계를 포함하는 전극 형성 방법.
- 청구항 13에 있어서,상기 사이클을 종료한 후에 실시하며, 상기 루테늄 및 금속을 함유하는 혼합층을 수소 플라즈마에 노출시키는 단계를 포함하는 전극 형성 방법.
- 청구항 1 내지 청구항 16 중 어느 한 항에 있어서,상기 금속 함유 전구체는, 텅스텐, 이리듐, 오스뮴, 로듐, 백금, 은, 레늄 및 팔라듐 중 적어도 하나의 금속을 포함하는 전극 형성 방법.
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| CN202480038188.0A CN121400088A (zh) | 2023-06-08 | 2024-06-05 | 形成电极的方法 |
| JP2025570057A JP2026526374A (ja) | 2023-06-08 | 2024-06-05 | 電極形成方法 |
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| KR1020230073425A KR20240174245A (ko) | 2023-06-08 | 2023-06-08 | 전극 형성 방법 |
| KR10-2023-0073425 | 2023-06-08 |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20060240576A1 (en) * | 2005-04-19 | 2006-10-26 | Stmicroelectronics Sa | Process for fabricating an integrated circuit including a capacitor with a copper electrode |
| KR20090000431A (ko) * | 2007-06-28 | 2009-01-07 | 주식회사 하이닉스반도체 | 루테늄계 전극을 구비한 캐패시터 및 그 제조 방법 |
| KR20130088487A (ko) * | 2012-01-31 | 2013-08-08 | 영남대학교 산학협력단 | 원자층 증착법에 의한 루테늄 박막 형성 방법 및 그를 이용한 루테늄 박막 |
| KR101379015B1 (ko) * | 2006-02-15 | 2014-03-28 | 한국에이에스엠지니텍 주식회사 | 플라즈마 원자층 증착법을 이용한 루테늄 막 증착 방법 및고밀도 루테늄 층 |
| KR102226125B1 (ko) * | 2019-07-01 | 2021-03-10 | 한국과학기술연구원 | 전극막 제조 방법 및 이를 이용한 커패시터의 제조 방법 |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100881728B1 (ko) | 2007-05-04 | 2009-02-06 | 주식회사 하이닉스반도체 | 루테늄전극을 구비한 반도체소자 및 그 제조 방법 |
-
2023
- 2023-06-08 KR KR1020230073425A patent/KR20240174245A/ko active Pending
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2024
- 2024-06-05 CN CN202480038188.0A patent/CN121400088A/zh active Pending
- 2024-06-05 JP JP2025570057A patent/JP2026526374A/ja active Pending
- 2024-06-05 WO PCT/KR2024/007710 patent/WO2024253426A1/ko not_active Ceased
- 2024-06-07 TW TW113121313A patent/TW202501580A/zh unknown
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20060240576A1 (en) * | 2005-04-19 | 2006-10-26 | Stmicroelectronics Sa | Process for fabricating an integrated circuit including a capacitor with a copper electrode |
| KR101379015B1 (ko) * | 2006-02-15 | 2014-03-28 | 한국에이에스엠지니텍 주식회사 | 플라즈마 원자층 증착법을 이용한 루테늄 막 증착 방법 및고밀도 루테늄 층 |
| KR20090000431A (ko) * | 2007-06-28 | 2009-01-07 | 주식회사 하이닉스반도체 | 루테늄계 전극을 구비한 캐패시터 및 그 제조 방법 |
| KR20130088487A (ko) * | 2012-01-31 | 2013-08-08 | 영남대학교 산학협력단 | 원자층 증착법에 의한 루테늄 박막 형성 방법 및 그를 이용한 루테늄 박막 |
| KR102226125B1 (ko) * | 2019-07-01 | 2021-03-10 | 한국과학기술연구원 | 전극막 제조 방법 및 이를 이용한 커패시터의 제조 방법 |
Also Published As
| Publication number | Publication date |
|---|---|
| KR20240174245A (ko) | 2024-12-17 |
| CN121400088A (zh) | 2026-01-23 |
| JP2026526374A (ja) | 2026-08-07 |
| TW202501580A (zh) | 2025-01-01 |
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