WO2003018870A2 - Einrichtung zur reaktiven plasmabehandlung von substraten und verfahren zur anwendung - Google Patents
Einrichtung zur reaktiven plasmabehandlung von substraten und verfahren zur anwendung Download PDFInfo
- Publication number
- WO2003018870A2 WO2003018870A2 PCT/DE2002/003131 DE0203131W WO03018870A2 WO 2003018870 A2 WO2003018870 A2 WO 2003018870A2 DE 0203131 W DE0203131 W DE 0203131W WO 03018870 A2 WO03018870 A2 WO 03018870A2
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- substrate
- plasma
- vacuum chamber
- plasma source
- substrates
- Prior art date
Links
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
- H01J37/00—Discharge tubes with provision for introducing objects or material to be exposed to the discharge, e.g. for the purpose of examination or processing thereof
- H01J37/32—Gas-filled discharge tubes
- H01J37/32009—Arrangements for generation of plasma specially adapted for examination or treatment of objects, e.g. plasma sources
- H01J37/32082—Radio frequency generated discharge
-
- 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
- C23C16/48—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 by irradiation, e.g. photolysis, radiolysis, particle radiation
- C23C16/481—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 by irradiation, e.g. photolysis, radiolysis, particle radiation by radiant heating of the substrate
-
- 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
- C23C16/50—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 using electric discharges
- C23C16/505—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 using electric discharges using radio frequency discharges
- C23C16/509—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 using electric discharges using radio frequency discharges using internal electrodes
-
- 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
- C23C16/54—Apparatus specially adapted for continuous coating
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
- H01J37/00—Discharge tubes with provision for introducing objects or material to be exposed to the discharge, e.g. for the purpose of examination or processing thereof
- H01J37/32—Gas-filled discharge tubes
- H01J37/32431—Constructional details of the reactor
- H01J37/32733—Means for moving the material to be treated
- H01J37/32743—Means for moving the material to be treated for introducing the material into processing chamber
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
- H01J37/00—Discharge tubes with provision for introducing objects or material to be exposed to the discharge, e.g. for the purpose of examination or processing thereof
- H01J37/32—Gas-filled discharge tubes
- H01J37/32431—Constructional details of the reactor
- H01J37/32733—Means for moving the material to be treated
- H01J37/32752—Means for moving the material to be treated for moving the material across the discharge
- H01J37/32761—Continuous moving
- H01J37/32779—Continuous moving of batches of workpieces
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
- H01J2237/00—Discharge tubes exposing object to beam, e.g. for analysis treatment, etching, imaging
- H01J2237/20—Positioning, supporting, modifying or maintaining the physical state of objects being observed or treated
- H01J2237/2001—Maintaining constant desired temperature
Definitions
- the invention relates to a device according to the preamble of claim 1, in particular for the reactive plasma treatment or plasma-assisted coating of substrates at elevated temperature in a low-pressure plasma of reactive gases. Furthermore, the invention relates to a method for using a device according to the invention.
- the invention relates to both chemical and physical vapor deposition (CVD, PVD), which are generally known for etching, coating or for modifying a substrate surface.
- this temperature is generated by, for example, the substrates lying on a correspondingly hot support.
- the heat is transferred from the carrier to the substrate both by heat radiation and by heat conduction.
- the disadvantage here is that the carrier must be hot itself and the heat transfer is very slow due to the vacuum conditions that are often required for the process.
- the substrate carrier When running through with moving substrates, the substrate carrier must either be kept permanently at a high temperature or heated up quickly when loading the system.
- thin substrates of low heat capacity are heated directly by heat radiation from a separate radiation source, it being advantageous if the substrates of the radiation source offer the largest possible exposed absorption surface by means of suitable receiving devices.
- the radiation source or parts thereof, e.g. Radiation window, and the substrate recordings are located directly in the reaction space. The properties of these parts are often undesirably changed in the treatment process by coating or modification, e.g. in its permeability to heat radiation or its heat absorption capacity.
- reaction gases it is advantageous, if necessary also indispensable, for the reaction gases to be low
- the plasma is generated electrically, with a voltage being applied to a suitable electrode arrangement, which ignites an electrical gas discharge.
- a high effect of the plasma is achieved when the with the
- DE 198 53 121 Cl specifies a method for treating a surface in a high-frequency plasma.
- the surface to be treated is switched as an electrode of the high-frequency discharge, a thin electrically conductive layer being formed on the surface and the energy being supplied to the conductive layer by means of a coupling electrode, which is arranged on the side close to the substrate, which extends from the surface to be coated from behind the substrate.
- Plasma chemical material conversion requires a sufficiently high supply of process gas or reactive gas in the plasma area. This must be ensured by supplying a fresh gas mixture and deriving inactive, gaseous secondary products from the reaction. An even response, e.g. an areal homogeneous coating, etching or
- Modification rate is achieved when the process gases flow evenly onto the plasma area and the substrate surface and gaseous reaction products are evenly discharged from the reaction area in front of the substrate surface. That can be done by appropriate
- Gas routing devices are effected. However, such devices often adversely affect plasma generation in terms of their effectiveness and uniformity.
- the gas guiding devices change the electrical and magnetic field conditions in the vicinity of the plasma source and conversely the flow conditions of the process gases are disturbed by the electrode internals.
- the reaction products are more or less uniformly deposited in the entire plasma space.
- the corresponding undesirable coatings of the plasma chamber are associated with a high cleaning effort.
- the electrodes of the plasma source are also coated, which can very quickly lead to insulation of the electrodes and consequently to the impediment or extinction of the plasma discharge.
- the invention is therefore based on the object of creating a device for reactive plasma-assisted plasma treatment of at least one substrate, which ensures reliable homogeneous plasma generation over the surface to be treated, as well as uniform temperature control and reactive gas guidance. Furthermore, contamination of the device by reaction products is to be largely avoided. In particular, the device should also be able to be operated as a continuous system. Another task is to provide a procedure for using the facility.
- the invention solves the problem for the device by the features specified in the characterizing part of claim 1. For the method, the object is achieved by the features of claim 9.
- Advantageous further developments of the invention are characterized in the respective subclaims and are described in more detail below together with the description of the preferred embodiment of the invention, including the drawing.
- the process space within a vacuum chamber is essentially limited to the immediate plasma area with the surfaces of the substrates to be treated and the components required for supplying and distributing the process gas.
- the electrodes of the plasma generating device and the substrate heating device are arranged in a separate room, separate from the plasma room, within the vacuum chamber. In the invention, these spaces are referred to as the first space, in which the substrate arrangement and the reactive gas inlet are located, and as the second space, in which the electrodes of the plasma source and the substrate heating device are arranged.
- Both rooms are located inside the vacuum chamber, whereby they are separated from each other by a partition.
- the partition is permeable to the electrical and magnetic fields of the plasma electrodes and the heat radiation from the substrate heating device.
- a partition made of glass or ceramic is claimed.
- the protection of the invention also includes other materials, such as quartz or plastics, which, under the given technological conditions, ensure the required stability and permeability for electrical and magnetic fields and the heat radiation.
- High-frequency alternating voltages (HF) or microwave arrangements (MW) can be used to generate the plasma, in practice a high-frequency plasma source is often more advantageous.
- electrodes of an HF plasma source can be flat and have openings. Such electrodes can very advantageously be arranged directly on the dividing wall, such that the plasma discharge is formed through the dividing wall within the first space.
- the substrate arrangement can advantageously lie directly on the partition, so that in particular flat substrates can be arranged directly within the center of the plasma discharge.
- the reactive gas inlet can advantageously be arranged flat in the form of a gas shower opposite the partition directly above the substrate arrangement.
- the substrate heating device for heating the substrate arrangement can advantageously be arranged behind the electrodes in relation to the partition with the substrate arrangement in the case of the described flat and perforated electrodes of an HF plasma source.
- the heat radiation can act flatly on the substrate arrangement through the openings in the electrodes and the partition.
- the openings should advantageously be arranged in the electrode surface with a high surface density and should not be larger than a few millimeters in diameter. A flat homogeneous plasma with high radiation permeability is thus achieved. Grid-shaped wire nets are also possible.
- the device can also be designed as a continuous system.
- the inventive Partition wall consisting of a static plate separating the electrodes from the first space and a second plate which is arranged to be movable from the first via a vacuum gap which is as narrow as possible and which carries the substrates.
- the second movable plate can be designed as a conveyor belt.
- the entire vacuum chamber is evacuated in practice.
- the partition does not have to be vacuum-tight, but a certain gas exchange may be possible, with an appropriate control of the supply of the reactive gases and the discharge of the inactive secondary products in or out of the first room to avoid that an undesirably effective amount of reactive gases from the can penetrate the first room into the second room.
- a neutral atmosphere should be set in the second room.
- a process gas is let in and the plasma source is ignited, so that a plasma discharge takes place in the first space in the area of the substrate arrangement, under the effect of which reactive products arise deposit the substrates or treat the surfaces with the plasma discharge, e.g. are etched.
- reaction products of the plasma process are deposited not only on the substrates in a known manner, but also in the entire first room. In the second room with the
- Electrodes of the plasma source in which there is no reactive gas the mechanical internals like the electrodes are practically not coated with disruptive deposits. This part of the device thus remains clean and in particular the electrodes of the plasma source and the substrate heating device can be operated without problems.
- the required maintenance effort of the facility, especially for cleaning work, is significantly reduced.
- the advantages are equally effective in batch systems as in continuous systems.
- the drawing shows a schematic representation of a continuous system according to the invention in side view.
- the drawing shows a vacuum chamber 1 with a substrate inlet lock 2 and a substrate outlet lock 3.
- Substrates 4 in the form of semiconductor wafers lie on a multiplicity of glass substrate carriers 5, which are arranged in a row through the vacuum chamber 1 by means of a transport system (not shown) in the direction of the arrow can be moved.
- the substrate carrier 5 consist of glass plates in the exemplary embodiment with a thickness of 6 mm.
- the substrate supports 5 divide the vacuum chamber 1 into a first space 6 and a second space 7 in the manner of a partition wall according to the invention.
- the substrate supports 5 are electrically insulating, have low dielectric losses and are therefore permeable to high-frequency, plasma-generating electrical and magnetic fields, and heat radiation.
- the electrodes 8 and 9 are insulated by two glass plates 10 and 11, flat, symmetrical and held in one plane parallel to the substrate carriers 5.
- a radiation-permeable, metallic shield 13 in the example in the form of a coarse-meshed metal mesh, is provided on the side of the electrode arrangement facing away from the substrate carriers.
- Radiation spectrum is set such that a high proportion of the radiated thermal energy can penetrate the arrangements between it and the substrates 4 with little loss, so that the radiation-absorbing substrates can be optimally heated.
- An Si 3 N 4 protective layer is to be applied to the already mentioned semiconductor wafers as substrates 4 using a CVD method.
- the substrates 4 are introduced through the substrate entry lock 2 into the first space 6 of the vacuum chamber 1.
- the substrates 4 lie directly on the substrate carriers 5.
- the vacuum chamber is evacuated and a mixture of silane and ammonia is permanently admitted into the first space 6 as a reactive gas and the gaseous inactive secondary products are removed from the first space 6 via an exhaust gas line, not shown.
- the heat radiator 14 is in operation and heats the substrates 4 from below through the substrate carrier 5 to the required process temperature of approximately 300 ° C.
- a plasma discharge is maintained between the electrodes 8 and 9, the main discharge current running through the substrate carrier 5 directly above the substrates 4.
- the electrodes 8 and 9 are acted upon by the HF generator 12 with a high-frequency voltage with a frequency in the range of 100 kHz, a pressure of approximately 0.01 to 1 mbar being set in the vacuum chamber 1.
- the plasma power based on the electrode area is, for example, between 0.1 and 1 W / cm 2 -
- the substrate carriers 5 with the substrates 4 are slowly passed through the vacuum chamber 1, quickly heated to the reaction temperature of approx. 300 ° C. and under the action of the plasma and the reactive gas made of silane and ammonia, a protective layer of Si 3 N 4 separates continuously from.
- a suitable microwave plasma source can also be used.
- a substrate heating device can also be used, in which the heat radiation is introduced into the first room via windows.
- the invention naturally also includes devices in which an inert gas is used instead of a reactive gas for specific applications.
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Plasma & Fusion (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Health & Medical Sciences (AREA)
- Toxicology (AREA)
- Chemical Vapour Deposition (AREA)
Abstract
Description
Claims
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP02760136A EP1421227A2 (de) | 2001-08-24 | 2002-08-23 | Einrichtung zur reaktiven plasmabehandlung von substraten und verfahren zur anwendung |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE2001141142 DE10141142B4 (de) | 2001-08-24 | 2001-08-24 | Einrichtung zur reaktiven Plasmabehandlung von Substraten und Verfahren zur Anwendung |
DE10141142.1 | 2001-08-24 |
Publications (2)
Publication Number | Publication Date |
---|---|
WO2003018870A2 true WO2003018870A2 (de) | 2003-03-06 |
WO2003018870A3 WO2003018870A3 (de) | 2003-05-22 |
Family
ID=7696245
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/DE2002/003131 WO2003018870A2 (de) | 2001-08-24 | 2002-08-23 | Einrichtung zur reaktiven plasmabehandlung von substraten und verfahren zur anwendung |
Country Status (3)
Country | Link |
---|---|
EP (1) | EP1421227A2 (de) |
DE (1) | DE10141142B4 (de) |
WO (1) | WO2003018870A2 (de) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP2409313A1 (de) * | 2009-03-17 | 2012-01-25 | Roth & Rau AG | Substratbearbeitungsanlage und substratbearbeitungsverfahren |
WO2012073142A2 (de) * | 2010-11-30 | 2012-06-07 | Roth & Rau Ag | Verfahren und vorrichtung zur ionenimplantation |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4976996A (en) * | 1987-02-17 | 1990-12-11 | Lam Research Corporation | Chemical vapor deposition reactor and method of use thereof |
US5976258A (en) * | 1998-02-05 | 1999-11-02 | Semiconductor Equipment Group, Llc | High temperature substrate transfer module |
Family Cites Families (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS6244574A (ja) * | 1985-08-20 | 1987-02-26 | Fujitsu Ltd | 化学気相成長方法 |
JPH0737670B2 (ja) * | 1991-04-26 | 1995-04-26 | 株式会社日本生産技術研究所 | ライン式プラズマcvd装置 |
US6170428B1 (en) * | 1996-07-15 | 2001-01-09 | Applied Materials, Inc. | Symmetric tunable inductively coupled HDP-CVD reactor |
DE19853121C1 (de) * | 1998-11-18 | 2000-02-24 | Poll Hans Ulrich | Verfahren und Einrichtung zur Behandlung eines Substrates in einem Hochfrequenzplasma und Anwendung der Einrichtung |
DE69919499T2 (de) * | 1999-01-14 | 2005-09-08 | Vlaamse Instelling Voor Technologisch Onderzoek, Afgekort V.I.T.O. | Vorrichtung zum Aufbringen von Beschichtungen auf ein Substrat durch eine induktiv-angekoppelte magnetisch-begrenzte Plasmaquelle |
DE19955671B4 (de) * | 1999-11-19 | 2004-07-22 | Muegge Electronic Gmbh | Vorrichtung zur Erzeugung von Plasma |
-
2001
- 2001-08-24 DE DE2001141142 patent/DE10141142B4/de not_active Expired - Fee Related
-
2002
- 2002-08-23 WO PCT/DE2002/003131 patent/WO2003018870A2/de not_active Application Discontinuation
- 2002-08-23 EP EP02760136A patent/EP1421227A2/de not_active Withdrawn
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4976996A (en) * | 1987-02-17 | 1990-12-11 | Lam Research Corporation | Chemical vapor deposition reactor and method of use thereof |
US5976258A (en) * | 1998-02-05 | 1999-11-02 | Semiconductor Equipment Group, Llc | High temperature substrate transfer module |
Non-Patent Citations (2)
Title |
---|
PATENT ABSTRACTS OF JAPAN vol. 011, no. 232 (C-437), 29. Juli 1987 (1987-07-29) & JP 62 044574 A (FUJITSU LTD), 26. Februar 1987 (1987-02-26) * |
PATENT ABSTRACTS OF JAPAN vol. 017, no. 167 (C-1043), 31. März 1993 (1993-03-31) & JP 04 325687 A (NIHON SEISAN GIJIYUTSU KENKIYUUSHIYO:KK;OTHERS: 01), 16. November 1992 (1992-11-16) * |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP2409313A1 (de) * | 2009-03-17 | 2012-01-25 | Roth & Rau AG | Substratbearbeitungsanlage und substratbearbeitungsverfahren |
WO2012073142A2 (de) * | 2010-11-30 | 2012-06-07 | Roth & Rau Ag | Verfahren und vorrichtung zur ionenimplantation |
WO2012073142A3 (de) * | 2010-11-30 | 2012-11-15 | Roth & Rau Ag | Verfahren und vorrichtung zur ionenimplantation |
CN103237918A (zh) * | 2010-11-30 | 2013-08-07 | 德国罗特·劳股份有限公司 | 用于离子注入的方法和装置 |
Also Published As
Publication number | Publication date |
---|---|
DE10141142A1 (de) | 2003-03-27 |
EP1421227A2 (de) | 2004-05-26 |
WO2003018870A3 (de) | 2003-05-22 |
DE10141142B4 (de) | 2004-11-11 |
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