EP1664380A2 - Verfahren und vorrichtung zur schichtenabscheidung unter verwendung von nicht-kontinuierlicher injektion - Google Patents
Verfahren und vorrichtung zur schichtenabscheidung unter verwendung von nicht-kontinuierlicher injektionInfo
- Publication number
- EP1664380A2 EP1664380A2 EP04787104A EP04787104A EP1664380A2 EP 1664380 A2 EP1664380 A2 EP 1664380A2 EP 04787104 A EP04787104 A EP 04787104A EP 04787104 A EP04787104 A EP 04787104A EP 1664380 A2 EP1664380 A2 EP 1664380A2
- Authority
- EP
- European Patent Office
- Prior art keywords
- process chamber
- layers
- starting material
- pulse
- injection
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Withdrawn
Links
- 238000000034 method Methods 0.000 title claims abstract description 89
- 238000002347 injection Methods 0.000 title claims abstract description 44
- 239000007924 injection Substances 0.000 title claims abstract description 44
- 239000007858 starting material Substances 0.000 title claims abstract description 34
- 238000000151 deposition Methods 0.000 title claims abstract description 30
- 239000007788 liquid Substances 0.000 title claims abstract description 25
- 239000000758 substrate Substances 0.000 claims abstract description 31
- 239000012159 carrier gas Substances 0.000 claims abstract description 11
- 230000008020 evaporation Effects 0.000 claims description 23
- 238000001704 evaporation Methods 0.000 claims description 23
- 239000007789 gas Substances 0.000 claims description 23
- 230000008021 deposition Effects 0.000 claims description 20
- 229910052751 metal Inorganic materials 0.000 claims description 13
- 239000002184 metal Substances 0.000 claims description 13
- MMKQUGHLEMYQSG-UHFFFAOYSA-N oxygen(2-);praseodymium(3+) Chemical compound [O-2].[O-2].[O-2].[Pr+3].[Pr+3] MMKQUGHLEMYQSG-UHFFFAOYSA-N 0.000 claims description 9
- 229910003447 praseodymium oxide Inorganic materials 0.000 claims description 9
- TWNQGVIAIRXVLR-UHFFFAOYSA-N oxo(oxoalumanyloxy)alumane Chemical compound O=[Al]O[Al]=O TWNQGVIAIRXVLR-UHFFFAOYSA-N 0.000 claims description 7
- 229910052710 silicon Inorganic materials 0.000 claims description 7
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims description 6
- 150000002736 metal compounds Chemical class 0.000 claims description 6
- 229910052760 oxygen Inorganic materials 0.000 claims description 6
- 239000001301 oxygen Substances 0.000 claims description 6
- 230000015572 biosynthetic process Effects 0.000 claims description 5
- 229910052797 bismuth Inorganic materials 0.000 claims description 5
- 150000002739 metals Chemical class 0.000 claims description 5
- 239000000203 mixture Substances 0.000 claims description 5
- 239000010703 silicon Substances 0.000 claims description 5
- IVUXZQJWTQMSQN-UHFFFAOYSA-N distrontium;oxygen(2-);tantalum(5+) Chemical compound [O-2].[O-2].[O-2].[O-2].[O-2].[O-2].[O-2].[Sr+2].[Sr+2].[Ta+5].[Ta+5] IVUXZQJWTQMSQN-UHFFFAOYSA-N 0.000 claims description 4
- 150000004767 nitrides Chemical class 0.000 claims description 4
- 229910052755 nonmetal Inorganic materials 0.000 claims description 4
- 238000002161 passivation Methods 0.000 claims description 4
- 229910052779 Neodymium Inorganic materials 0.000 claims description 3
- 229910052788 barium Inorganic materials 0.000 claims description 3
- 229910052732 germanium Inorganic materials 0.000 claims description 3
- GNPVGFCGXDBREM-UHFFFAOYSA-N germanium atom Chemical compound [Ge] GNPVGFCGXDBREM-UHFFFAOYSA-N 0.000 claims description 3
- 229910052750 molybdenum Inorganic materials 0.000 claims description 3
- 230000006911 nucleation Effects 0.000 claims description 3
- 238000010899 nucleation Methods 0.000 claims description 3
- 239000007800 oxidant agent Substances 0.000 claims description 3
- 239000007787 solid Substances 0.000 claims description 3
- 229910052712 strontium Inorganic materials 0.000 claims description 3
- 239000004094 surface-active agent Substances 0.000 claims description 3
- 229910052715 tantalum Inorganic materials 0.000 claims description 3
- 229910052719 titanium Inorganic materials 0.000 claims description 3
- 229910052727 yttrium Inorganic materials 0.000 claims description 3
- 229910052726 zirconium Inorganic materials 0.000 claims description 3
- 206010010144 Completed suicide Diseases 0.000 claims description 2
- 229910052688 Gadolinium Inorganic materials 0.000 claims description 2
- 229910052787 antimony Inorganic materials 0.000 claims description 2
- 229910052735 hafnium Inorganic materials 0.000 claims description 2
- 238000005259 measurement Methods 0.000 claims description 2
- 150000002927 oxygen compounds Chemical class 0.000 claims description 2
- 230000002123 temporal effect Effects 0.000 claims description 2
- 230000007704 transition Effects 0.000 claims description 2
- 229910052782 aluminium Inorganic materials 0.000 claims 2
- MRELNEQAGSRDBK-UHFFFAOYSA-N lanthanum(3+);oxygen(2-) Chemical compound [O-2].[O-2].[O-2].[La+3].[La+3] MRELNEQAGSRDBK-UHFFFAOYSA-N 0.000 claims 2
- 229910052738 indium Inorganic materials 0.000 claims 1
- 230000001590 oxidative effect Effects 0.000 claims 1
- 229910052714 tellurium Inorganic materials 0.000 claims 1
- 239000000463 material Substances 0.000 abstract description 13
- 238000009834 vaporization Methods 0.000 abstract description 4
- 230000008016 vaporization Effects 0.000 abstract description 4
- 239000010410 layer Substances 0.000 description 51
- 229910044991 metal oxide Inorganic materials 0.000 description 11
- 150000004706 metal oxides Chemical group 0.000 description 11
- 239000000126 substance Substances 0.000 description 9
- 238000000231 atomic layer deposition Methods 0.000 description 8
- 239000002243 precursor Substances 0.000 description 8
- 238000002488 metal-organic chemical vapour deposition Methods 0.000 description 6
- 229910000449 hafnium oxide Inorganic materials 0.000 description 5
- WIHZLLGSGQNAGK-UHFFFAOYSA-N hafnium(4+);oxygen(2-) Chemical compound [O-2].[O-2].[Hf+4] WIHZLLGSGQNAGK-UHFFFAOYSA-N 0.000 description 5
- 239000012705 liquid precursor Substances 0.000 description 5
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 4
- 238000011065 in-situ storage Methods 0.000 description 4
- 238000004519 manufacturing process Methods 0.000 description 4
- 239000000443 aerosol Substances 0.000 description 3
- 238000001451 molecular beam epitaxy Methods 0.000 description 3
- 238000006243 chemical reaction Methods 0.000 description 2
- 150000001875 compounds Chemical class 0.000 description 2
- 239000004020 conductor Substances 0.000 description 2
- 238000011161 development Methods 0.000 description 2
- 239000003989 dielectric material Substances 0.000 description 2
- 230000003071 parasitic effect Effects 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- 230000001105 regulatory effect Effects 0.000 description 2
- 239000000243 solution Substances 0.000 description 2
- ZAMOUSCENKQFHK-UHFFFAOYSA-N Chlorine atom Chemical compound [Cl] ZAMOUSCENKQFHK-UHFFFAOYSA-N 0.000 description 1
- 229910052777 Praseodymium Inorganic materials 0.000 description 1
- 229910000577 Silicon-germanium Inorganic materials 0.000 description 1
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 1
- 238000000137 annealing Methods 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 238000005229 chemical vapour deposition Methods 0.000 description 1
- 229910052801 chlorine Inorganic materials 0.000 description 1
- 239000000460 chlorine Substances 0.000 description 1
- 238000011109 contamination Methods 0.000 description 1
- 238000005137 deposition process Methods 0.000 description 1
- 239000007772 electrode material Substances 0.000 description 1
- 238000010952 in-situ formation Methods 0.000 description 1
- 239000011229 interlayer Substances 0.000 description 1
- 238000010030 laminating Methods 0.000 description 1
- 239000011344 liquid material Substances 0.000 description 1
- 239000006193 liquid solution Substances 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 125000002524 organometallic group Chemical group 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- PUDIUYLPXJFUGB-UHFFFAOYSA-N praseodymium atom Chemical compound [Pr] PUDIUYLPXJFUGB-UHFFFAOYSA-N 0.000 description 1
- 238000005086 pumping Methods 0.000 description 1
- 239000004065 semiconductor Substances 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 150000004760 silicates Chemical class 0.000 description 1
- 238000001228 spectrum Methods 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
- 238000011144 upstream manufacturing Methods 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C16/00—Chemical coating by decomposition of gaseous compounds, without leaving reaction products of surface material in the coating, i.e. chemical vapour deposition [CVD] processes
- C23C16/44—Chemical coating by decomposition of gaseous compounds, without leaving reaction products of surface material in the coating, i.e. chemical vapour deposition [CVD] processes characterised by the method of coating
- C23C16/4411—Cooling of the reaction chamber walls
-
- 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
- C23C16/448—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 generating reactive gas streams, e.g. by evaporation or sublimation of precursor materials
- C23C16/4481—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 generating reactive gas streams, e.g. by evaporation or sublimation of precursor materials by evaporation using carrier gas in contact with the source 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
- C23C16/52—Controlling or regulating the coating process
Definitions
- metal oxide layers such as hafnium oxide, aluminum oxide or praseodymium oxide
- methods such as molecular beam epitaxy (MBE), organic chemical vapor deposition (MOCVD) and atomic layer deposition (ALD) are listed in the literature.
- MBE molecular beam epitaxy
- MOCVD organic chemical vapor deposition
- ALD atomic layer deposition
- MOCVD and ALD can guarantee good edge coverage when depositing on structured substrates.
- MOCVD processes which are based on liquid or solid precursors, use heated precursor containers to transfer liquid precursors into the gas phase by means of a carrier gas.
- precursors for oxidic materials or corresponding diluted solutions
- ALD is based on alternating, self-limiting chemical reactions for the successive deposition of monolayers. Pumping and rinsing cycles are introduced between the supply of the individual regiments. This leads to low throughputs and complicates the production of multicomponent oxides, since the starting substances are not mixed in the gas phase as in standard MOCVD processes. In particular, therefore, due to the principle of the ALD process, layers cannot be produced which allow a gradient-like change of mixtures of several metal oxides of different material types in situ during the growth process. This disadvantage creates parasitic interlayers between the individual layers of the different materials during the rinsing cycles due to, for example, unwanted oxidation of, for example, materials which intrinsically have a higher affinity for oxygen (Si-based systems).
- ALD also shows non-linear growth depending on the layer thickness.
- only a small number of precursors are available for ALD and contamination problems often arise in the deposited films, for example with chlorine-based precursors.
- high-k materials are sought as alternatives to SiÜ2 as a dielectric.
- aluminum oxide, hafnium oxide or praseodymium oxide are of particularly great interest since they have outstanding properties with regard to the dielectric constant and the leakage currents.
- Improved material properties can be achieved by laminating or mixing these metal oxides with one another to improve the thermal stability, also by adding silicon.
- Pure Pr2 ⁇ 3 films deposited via MBE become a dielectric constant 31, and at 1.4 nm layer thickness and 1 V one Leakage current density of 5xl0 9 A / cm 2 reached. This is an approximately 10 4 times lower leakage current density than for HfC 2 or Zr ⁇ 2 films of the same thickness.
- the electrical properties are stable after 1000 ° C annealing. Pure materials such as pure Hf0 2 , AI2O3 or PßOß also do not meet the requirements regarding dielectric constant, leakage current or thermal stability.
- the invention relates to a method for depositing at least one layer on at least one substrate in a process chamber, wherein the layer consists of several components and is insulating, passivating or electrically conductive, the components by means of non-continuous injection of a liquid or dissolved in a liquid by means of one injector unit is evaporated into a temperature-controlled evaporation chamber and this steam is supplied to the process chamber by means of the carrier gas.
- the invention also relates to a device for depositing at least one layer on at least one substrate with a process chamber, the layer consisting of several components and being insulating, passivating or electrically conductive with injector units assigned to each component for the non-continuous injection of a liquid or starting material dissolved in a liquid into a temperature-controlled evaporation chamber, and means for supplying the vapor resulting from the evaporation of the starting material together with a carrier gas into the process chamber.
- Such a method or such a device is previously known from DE 100 57 491.
- This device is used to evaporate liquid or a starting material dissolved in a liquid.
- An aerosol is generated with the injector unit.
- the droplets of the aerosol evaporate in the evaporation chamber, the required heat being extracted from the gas therein. Evaporation takes place without surface contact.
- Starting materials are those compounds which are described by DE 101 56932 AI and DE 10114956 AI.
- Claim 1 and claim 17 essentially aim that the mass flow parameters determining the temporal course of the mass flow through each injector unit, such as the injection form, the injection frequency and the pulse / pause ratio, and the phase relationships of the pulse / pauses to the pulse / pauses other injector unit (EN) can be individually set or varied.
- the process chamber is preferably a vacuum chamber. The pressure there can be less than 100 mbar. The process chamber can be heated. Multiple layer sequences can be deposited on the substrate during a single process step. These can be conductive, passivating or non-conductive layers. Conductive and non-conductive layers can alternate with one another. Layers with a high dielectric are preferably deposited between two conductive layers.
- the layer sequence is essentially deposited by merely varying the mass flow parameters.
- the injection form or the injection frequency or the pulse / pause ratio can be varied in such a way that layers of different quality are deposited on top of one another without having to pause between the deposition of the successive layers.
- the mass flows can be adjusted by varying the injection frequency, the pulse / pause ratio and / or the injection pressure.
- Particularly suitable starting materials are metals such as those mentioned in DE 10114 956 and DE 100 57491 AI. AI, Si, Pr, Ge, Ti, Hf, Y, La, Nb, Ta, Mo, Bi, Nd, Zr, Gd, Ba, Sr in particular. Nucleation layers, oxides, mixed oxides, semiconducting layers and / or gradient layers. In addition to liquids, solids dissolved in a liquid can also be used as starting materials. Passivation layers are deposited in particular with the simultaneous addition of silicon or germanium. The passivation layers can also contain nitrides. Oxygen is added to produce oxides.
- Conductive layers can be metals, metal nitrides or suicides.
- the surface to be coated preferably has vertical structures. Such structures are shown in DE 101 56 932. These are trenches into which the vaporized starting materials diffuse in order to deposit evenly on the walls and on the bottom of the structures.
- diffusion-supporting metal or non-metal compounds surfactants are additionally injected.
- the substrate holder can be driven in rotation.
- An individual mass flow meter is assigned to each injector unit. Several injection units can be assigned to a multi-channel injection unit.
- an individual evaporation chamber is assigned to each multi-channel injection unit.
- Each of these vaporization chambers can be tempered.
- the pipes between the evaporation chambers and the process chamber can also be tempered.
- a shower head-shaped gas distributor can be located within the process chamber. This shower head-shaped Gas distributor is located above the substrate.
- the process gas flows into the process chamber from the openings arranged on the underside of the gas distributor in order to react on the surface of the substrate, the layer being formed.
- the oxygen supply and the diffusion-supporting agents can be fed directly into the gas distributor.
- the device has an electronic control device. The individual mass flow parameters are set and regulated with this electronic control device.
- the invention provides a device and a method that the cost-effective deposition of high-purity, multi-component metal oxides based on z. B. of praseodymium oxide, hafnium oxide or aluminum oxide, layers with good reproducibility, high uniformity and good edge coverage guaranteed even on highly structured substrates.
- This process consequently enables the formation of nanolaminates by cyclical addition of the individual sources and at the same time the in-situ formation of gradient layers by changing the individual quantities of starting substances added.
- this is regulated by changing the respective injection frequency, pulse / pause ratio but also changes in the injection form.
- diffusion-supporting metal or non-metal compounds surfactants
- the process via liquid Precursor injection can be added continuously.
- alternative gate dielectrics but also alternative gate electrodes can be used starting from a silicon surface termination.
- an entire transistor stack can be produced in one processing sequence by changing the gas phase composition in situ.
- the starting substance for surface termination such as nitridation or the growth of germanium
- the first layer sequence can be formed on a substrate without forming a parasitic inference be applied.
- the same procedure can be used for the boundary layer between the gate dielectric and the gate electrode by simply adapting the mass flow of the individual species during the deposition process.
- even conductive silicates can be formed for gate electrodes by in-situ admixing of silicon from the metal compounds.
- Advantages of this method are therefore high throughput, possible deposition of multicomponent oxides and electrically conductive materials, good ones stoichiometric control, great flexibility due to a large number of possible prescursors, atomically precise deposition, production of nanolaminates and hyperstructures, controlled deposition of nucleation layers and gradient layers.
- the invention also relates to a method for depositing at least one layer on at least one substrate in a process chamber, the layer consisting of several components, each component being assigned a starting material which is injected into the process chamber as a gas or liquid.
- at least one first starting material is not continuously, in particular pulsed, and at least one second starting material is continuously fed to the process chamber.
- the first starting material can be a metal compound of the type described above.
- the second starting material, which is fed continuously, can preferably be an oxygen compound.
- An oxide layer can then be deposited using the method.
- an HfÜ2 a Ta05 but also an SiGe layer can be deposited using such a method.
- the starting materials added in pulses into the process chamber or into an evaporation chamber upstream of the process chamber can be liquids. These can evaporate in the manner described above within the evaporation chamber and can be passed into a gas distributor by means of a carrier gas.
- the continuously added component can also be introduced into this gas distributor.
- An essential difference of this process compared to the ALD process or the conventional CVD process is the supply of one component in the form of pulses and the supply of the other component continuously.
- the continuously supplied component is in abundance in the process chamber or on the substrate.
- the pulse-added component limits growth.
- the surface can orient itself during the pulse pauses. The surface is oriented in an excess environment of the second component.
- the pulse widths can be selected so that about one or a few monolayers will leave during a pulse.
- the first component added in pulses can be a metallic or organometallic precursor.
- the second component can preferably be an oxygen component. It is also preferred to use MMP starting materials which are added in pulsed
- Fig. 1 shows a schematic representation of the structure of a device according to the invention
- Fig. 2 shows a typical trench structure.
- the device is used for the separation of single and multi-component materials using non-continuous injection of liquid or dissolved metal starting substances via a multi-channel injector unit 6, each channel 5 individually in terms of injection frequency, injector pre-pressure, pulse-pause ratio and phase relationship is adjustable for mass flow control.
- This device is intended specifically for the deposition of single and multi-component oxides (hafnium oxide, aluminum oxide, strontium tantalate, praseodymium oxide, etc.), laminated and mixed oxide materials and single or multi-component electrically conductive materials such as metals, metal oxides and electrically conductive semiconductor compounds ,
- oxides hafnium oxide, aluminum oxide, strontium tantalate, praseodymium oxide, etc.
- laminated and mixed oxide materials such as metals, metal oxides and electrically conductive semiconductor compounds
- the device has a reactor which forms a reactor chamber 14.
- This reactor chamber 14 is connected to a vacuum device, not shown, by means not shown.
- a heater 13 is located within the reactor chamber.
- the substrate 1 is arranged above the heater 13.
- the substrate 1 is shown enlarged in FIG. In reality, it rests on a substrate holder that can be rotated.
- the process chamber 2 is located above the substrate 1 and is delimited at the top by a gas distributor 15 designed like a shower head.
- a feed line 12 opens into the gas distributor 15.
- the evaporated starting materials 3 can be introduced into the gas distributor 15 together with a carrier gas 7 through this feed line 12.
- diffusion-promoting metal or non-metal compounds can also be passed through the feed line 16.
- Oxidants are introduced into the gas distributor via a feed line 18.
- the above-mentioned feed lines 12 can be temperature-controlled pipe connections. These connect evaporation chambers 4 to the gas distributor 15.
- a total of three evaporation chambers 4 are provided. But there can be fewer or more.
- Each of these vaporization chambers 4 has a multi-channel injection unit, which is indicated by the reference number 6.
- Each multi-channel injection unit 6 has a large number, in the exemplary embodiment four injection units 5. However, there may also be more or fewer.
- a liquid substance 3 or a substance dissolved in a liquid can be used as Aerosol can be injected into the vaporization chamber 4.
- Each injection unit 5 has an outlet valve which opens and closes in a pulsating manner.
- the pulse widths can be varied between a few seconds and a few milliseconds. The pulse widths can also be varied in the same spectrum.
- Each injector unit 5 is individually controlled by a control device 17.
- the mass flow parameters pulse width, pause width and pulse frequency can be individually controlled.
- the mass flow through each injector unit 5 is measured by means of a mass flow meter 9.
- the injection admission pressure, which can also be set individually for each injector unit 5, is set by means of a pressure regulator 10. With the pressure that is set by the pressure regulator 10, a reservoir is pressurized, in which the starting material is located.
- a feed line for a carrier gas 7 opens into each of the evaporation chambers 4.
- the mass flow of the carrier gas 7 is set by means of a mass flow controller 8.
- the device is used to coat a highly structured substrate, as is shown enlarged in FIG. 2.
- a substrate has vertical structures, in particular trenches 19.
- the walls and the bottom of each trench 19 are to be coated with one or more layers.
- the layer thickness a at the bottom of the trench 19 should deviate as little as possible from the layer thickness b of the surface covering of the substrate.
- passivating, conductive and non-conductive layers can be deposited directly on one another within a device without opening the same on a substrate.
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- Chemical & Material Sciences (AREA)
- General Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Chemical Vapour Deposition (AREA)
- Physical Vapour Deposition (AREA)
Abstract
Description
Claims
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE10342890 | 2003-09-17 | ||
DE102004021578A DE102004021578A1 (de) | 2003-09-17 | 2004-05-03 | Verfahren und Vorrichtung zur Abscheidung von ein-oder mehrkomponentigen Schichten und Schichtfolgen unter Verwendung von nicht-kontinuierlicher Injektion von flüssigen und gelösten Ausgangssubstanzen über eine Mehrkanalinjektionseinheit |
PCT/EP2004/052063 WO2005026401A2 (de) | 2003-09-17 | 2004-09-07 | Verfahren und vorrichtung zur schichtenabscheidung unter verwendung von nicht-kontinuierlicher injektion |
Publications (1)
Publication Number | Publication Date |
---|---|
EP1664380A2 true EP1664380A2 (de) | 2006-06-07 |
Family
ID=34314993
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP04787104A Withdrawn EP1664380A2 (de) | 2003-09-17 | 2004-09-07 | Verfahren und vorrichtung zur schichtenabscheidung unter verwendung von nicht-kontinuierlicher injektion |
Country Status (4)
Country | Link |
---|---|
US (1) | US7410670B2 (de) |
EP (1) | EP1664380A2 (de) |
KR (1) | KR20060079201A (de) |
WO (1) | WO2005026401A2 (de) |
Families Citing this family (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102004021578A1 (de) * | 2003-09-17 | 2005-04-21 | Aixtron Ag | Verfahren und Vorrichtung zur Abscheidung von ein-oder mehrkomponentigen Schichten und Schichtfolgen unter Verwendung von nicht-kontinuierlicher Injektion von flüssigen und gelösten Ausgangssubstanzen über eine Mehrkanalinjektionseinheit |
DE102004015174A1 (de) * | 2004-03-27 | 2005-10-13 | Aixtron Ag | Verfahren zum Abscheiden von insbesondere Metalloxiden mittels nicht kontinuierlicher Precursorinjektion |
FR2904006B1 (fr) * | 2006-07-21 | 2008-10-31 | Toulouse Inst Nat Polytech | Procede de depot de revetements metalliques durs |
US8017182B2 (en) * | 2007-06-21 | 2011-09-13 | Asm International N.V. | Method for depositing thin films by mixed pulsed CVD and ALD |
JP2011500961A (ja) | 2007-10-11 | 2011-01-06 | バレンス プロセス イクウィップメント,インコーポレイテッド | 化学気相成長反応器 |
US10072335B2 (en) * | 2014-08-29 | 2018-09-11 | University Of Maryland, College Park | Method of coating of object |
US11832521B2 (en) | 2017-10-16 | 2023-11-28 | Akoustis, Inc. | Methods of forming group III-nitride single crystal piezoelectric thin films using ordered deposition and stress neutral template layers |
KR102369676B1 (ko) | 2017-04-10 | 2022-03-04 | 삼성디스플레이 주식회사 | 표시 장치의 제조장치 및 표시 장치의 제조방법 |
US11618968B2 (en) | 2020-02-07 | 2023-04-04 | Akoustis, Inc. | Apparatus including horizontal flow reactor with a central injector column having separate conduits for low-vapor pressure metalorganic precursors and other precursors for formation of piezoelectric layers on wafers |
US12102010B2 (en) | 2020-03-05 | 2024-09-24 | Akoustis, Inc. | Methods of forming films including scandium at low temperatures using chemical vapor deposition to provide piezoelectric resonator devices and/or high electron mobility transistor devices |
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US6194038B1 (en) * | 1998-03-20 | 2001-02-27 | Applied Materials, Inc. | Method for deposition of a conformal layer on a substrate |
US6194229B1 (en) * | 1999-01-08 | 2001-02-27 | Micron Technology, Inc. | Method for improving the sidewall stoichiometry of thin film capacitors |
JP3823591B2 (ja) * | 1999-03-25 | 2006-09-20 | 三菱電機株式会社 | Cvd原料用気化装置およびこれを用いたcvd装置 |
KR100273473B1 (ko) * | 1999-04-06 | 2000-11-15 | 이경수 | 박막 형성 방법 |
KR100319494B1 (ko) * | 1999-07-15 | 2002-01-09 | 김용일 | 원자층 에피택시 공정을 위한 반도체 박막 증착장치 |
AU2001245388A1 (en) * | 2000-03-07 | 2001-09-17 | Asm America, Inc. | Graded thin films |
KR100363088B1 (ko) * | 2000-04-20 | 2002-12-02 | 삼성전자 주식회사 | 원자층 증착방법을 이용한 장벽 금속막의 제조방법 |
US20020030246A1 (en) * | 2000-06-28 | 2002-03-14 | Motorola, Inc. | Structure and method for fabricating semiconductor structures and devices not lattice matched to the substrate |
DE10057491A1 (de) * | 2000-11-20 | 2002-05-23 | Aixtron Ag | Vorrichtung und Verfahren zum Zuführen eines in die Gasform gebrachten flüssigen Ausgangsstoffes in einen CVD-Reaktor |
JP2002173777A (ja) * | 2000-12-01 | 2002-06-21 | C Bui Res:Kk | Cvd装置の金属液体気化ユニット及び気化方法 |
DE10114956C2 (de) | 2001-03-27 | 2003-06-18 | Infineon Technologies Ag | Verfahren zum Herstellen einer dielektrischen Schicht als Isolatorschicht für einen Grabenkondensator |
DE10156932A1 (de) | 2001-11-20 | 2003-05-28 | Infineon Technologies Ag | Verfahren zur Abscheidung dünner Praseodymoxid-Schichten mittels ALD/CVD-Verfahren |
US6620670B2 (en) * | 2002-01-18 | 2003-09-16 | Applied Materials, Inc. | Process conditions and precursors for atomic layer deposition (ALD) of AL2O3 |
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- 2004-09-07 KR KR1020067004379A patent/KR20060079201A/ko active Search and Examination
- 2004-09-07 EP EP04787104A patent/EP1664380A2/de not_active Withdrawn
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2006
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US20060249081A1 (en) | 2006-11-09 |
WO2005026401A2 (de) | 2005-03-24 |
KR20060079201A (ko) | 2006-07-05 |
WO2005026401B1 (de) | 2005-08-11 |
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