EP1123560A2 - Procede de production d'un support de tranches dans un reacteur de depot chimique en phase vapeur haute temperature - Google Patents

Procede de production d'un support de tranches dans un reacteur de depot chimique en phase vapeur haute temperature

Info

Publication number
EP1123560A2
EP1123560A2 EP00940151A EP00940151A EP1123560A2 EP 1123560 A2 EP1123560 A2 EP 1123560A2 EP 00940151 A EP00940151 A EP 00940151A EP 00940151 A EP00940151 A EP 00940151A EP 1123560 A2 EP1123560 A2 EP 1123560A2
Authority
EP
European Patent Office
Prior art keywords
wafer carrier
protective layer
coating
wafer
carrier according
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Withdrawn
Application number
EP00940151A
Other languages
German (de)
English (en)
Inventor
Dietmar Schmitz
Johannes Kaeppeler
Gert Strauch
Holger JÜRGENSEN
Michael Heuken
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Aixtron SE
Original Assignee
Aixtron SE
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Aixtron SE filed Critical Aixtron SE
Publication of EP1123560A2 publication Critical patent/EP1123560A2/fr
Withdrawn legal-status Critical Current

Links

Classifications

    • 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
    • H10P72/00—Handling or holding of wafers, substrates or devices during manufacture or treatment thereof
    • H10P72/50—Handling or holding of wafers, substrates or devices during manufacture or treatment thereof for positioning, orientation or alignment
    • 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
    • C23C16/458—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 supporting substrates in the reaction chamber
    • C23C16/4581—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 supporting substrates in the reaction chamber characterised by material of construction or surface finish of the means for supporting the substrate
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/30—Self-sustaining carbon mass or layer with impregnant or other layer

Definitions

  • the invention relates to a method for producing special wafer carriers, which are used advantageously in particular in a system or corresponding method for high-temperature coating of wafers with the aid of aggressive gases.
  • CVD processes such as MOVPE processes.
  • the components of the layer to be deposited are made available in gaseous form in a reactor. During the respective process steps, these gases come into contact not only with that of the substrate to be coated, but also with their surroundings within the reactor, the entire coating process being influenced. In particular, the process gases interact with the wafer carrier. Since the wafer carrier generally has a higher temperature than the base or the substrate, there is also an intensive interaction with the wafer carrier, which leads to an influence on the process. These process influences are difficult to minimize in CVD or MOVPE processes that use conventional wafer carriers.
  • the deposition is influenced in an unreproducible manner, the desired layer properties being negatively influenced.
  • the efficiency of the layers produced can deteriorate and / or the service life of the circuit to be produced can be reduced.
  • the required minimum requirements for the materials to be produced such as compound semiconductors Deposited materials with poorer properties must be considered as rejects, which results in higher manufacturing costs.
  • gases such as ammonia or halogen-containing gases such as HCl.
  • Known CVD processes and in particular MOVPE processes are to be optimized in such a way that these processes become more controllable and reproducible and the products have the desired properties with regard to their quality and the requirements placed on them.
  • the object of the invention to achieve a reproducible deposition of the desired layer sequences on wafers in CVD processes such as MOVPE processes.
  • the desired material properties should be available with very good uniformity.
  • the object is achieved by a special wafer carrier which is produced by a method according to the invention and which can be used in particular in CVD or MOVPE systems and methods.
  • the wafer carrier according to the invention should in particular not chemically interact with the process gases of the CVD process.
  • the wafer carrier according to the invention should be designed physically and chemically in such a way that it can withstand the stress, in particular by high-temperature CVD processes or -MOVPE processes is resistant to aggressive gases.
  • the method according to the invention provides the wafer carrier according to the invention.
  • the wafer carrier according to the invention is characterized in particular by a special surface design and an advantageous coating serving as a protective layer.
  • the protective layer of the wafer carrier according to the invention that is produced either results from a conversion of the wafer carrier surface or from deposition of supplied components, for example by means of a CVD process or MOVPE process.
  • BN or PBN can be used as the supplied component.
  • the special mechanical pretreatment and the resulting design of the surface optimize the wafer carrier for use in a CVD process in such a way that the electrical and optical properties of the layers on the wafers are very homogeneous.
  • That the desired properties of the protective layer on the wafer carrier can be determined by parameters such as temperature, pressure, time pretreatment and type of mechanical pretreatment in the method according to the invention.
  • the wafer carrier according to the invention is characterized by a special coating and a special mechanical processing.
  • Embodiments of the wafer carriers according to the invention can also have only a special coating or only special shapes. Both inventive solution features are used to obtain the most homogeneous wafers possible under reproducible conditions in a CVD process. Further claims indicate advantageous embodiments of the manufacturing method, which are associated with the particular advantages of the wafer carrier according to the invention.
  • the wafer carrier according to the invention is used in a system according to one of the use claims for fulfilling the object according to the invention.
  • the inventive use of the wafer carrier takes place in a system according to one of the further claims for use in a method according to one of the further claims.
  • These CVD processes are characterized by the use of aggressive gases at high temperatures.
  • C or graphite is advantageously suitable as the starting material for the wafer carrier, since it can be used to produce a clean, heat-resistant wafer carrier which is highly conductive in the high-frequency range.
  • the entire wafer carrier can advantageously be optimized in accordance with the task.
  • the aim of the wafer carrier is to achieve high homogeneity of the wafers produced in a CVD process.
  • Mechanical pretreatments include the formation of trenches, bores and depressions in the wafer carrier.
  • the wafer carrier manufactured according to the invention has optimal properties due to the new and inventive manufacturing process, which are advantageous for a high-temperature CVD process using aggressive gases:
  • the wafer carrier according to the invention can be distinguished by a temperature homogeneity of ⁇ T ⁇ 1 ° C. over a distance of approximately 120 mm from the wafer carrier.
  • This is the result of a special shaping according to the invention, such as in particular the formation of trenches on the wafer carrier. That
  • the wafer carrier according to the invention is also mechanically pretreated accordingly, so that in particular a homogeneous wafer can be produced in a CVD process.
  • a homogeneous electrical conductivity of the C-block of the wafer carrier used and the absorption behavior of the resulting coating according to the invention in relation to thermal radiation are also important parameters.
  • a process control according to the invention enables a nucleation layer or adhesion layer to be built up in a deposit, which results in a closed coating without cracks and with a uniform thickness.
  • the wafer carrier also has correspondingly rounded edges.
  • the adhesive properties of e.g. PBN on graphite can be significantly improved.
  • Another possible additional pretreatment which can be carried out in particular before the wafer carrier is heated, is to impregnate the graphite of the wafer carrier by means of chemical vapor infiltration.
  • the density of the graphite is increased by means of a solvent. This increases the conductivity of the wafer carrier and improves the high-frequency coupling when used in a high-temperature CVD process, i.e. the heat effect improves.
  • the process can be carried out slowly, so that the manufacturing process for the wafer according to the invention is advantageously easy to handle.
  • the process is carried out in periods which result from this until a coherent layer has been formed which has sufficient mechanical strength.
  • the periods are in particular in the minute range
  • the process temperatures for producing the wafer carrier according to the invention are preferably in a range from 1000 ° C. to 2200 ° C.
  • the temperature range is therefore sufficient and therefore advantageously above the temperature range in which a CVD process using the inventive wafer carrier takes place.
  • the process temperature must not be too high so that the gases do not decompose.
  • the thermal expansion of the wafer carrier is also limited.
  • the properties of the wafer carrier according to the invention can advantageously be optimized within a pressure range of 10 mbar to 1 bar.
  • the rate at which molecules diffuse into the wafer carrier depends on the process pressure. At high pressure, slow diffusion occurs, while small diffusion occurs quickly.
  • the choice of the coating components enables preferred layers and thus corresponding characteristics of the wafer carrier protective layer to be achieved.
  • the coating is said to be resistant to the aggressive gases used in the CVD process. The undesired deposition on the wafer carrier is reduced.
  • the shape of the wafer carrier can advantageously be adapted to the type of coating. Different materials have different coefficients of thermal expansion. As a result, the expansions are different and mechanical stresses arise. By adapting the shape of the wafer carrier to the coating in particular, mechanical stresses and associated inhomogeneities can be compensated for.
  • the wafer carrier according to the invention is resistant to destruction by reactive and corrosive gases and high temperatures, so that the desired properties of the wafers are not impaired.
  • Unwanted gases and substances do not penetrate into the wafer carrier, in particular when the wafer carrier is used in a CVD process, and therefore cannot be stored.
  • the coating of the wafer carrier according to the invention exhibits in particular low emissivity.
  • the wafer carrier is also characterized in that the entire surface, i. H. all functional trenches, bores, edges etc. are resistant to the aggressive atmosphere and the high temperatures.
  • the coefficient of thermal expansion of the entire wafer carrier (starting material and layer) is almost the same, so that no mechanical stresses occur during temperature changes or during temperature distributions within the wafer carrier.
  • the coating according to the invention is also characterized in that there is no diffusion of the reactive gas.
  • This coating is also chemically inert.
  • the coating is applied microscopically smooth to the wafer carrier.
  • the coating is therefore insensitive to changes in temperature.
  • the manufacturing method according to the invention advantageously results in a coherent coating also on corners and edges as well as on functional trenches and bores and on rounded edges.
  • the quality of the wafers to be produced is advantageously significantly improved.
  • Fig. 1 is an illustration of the wafer carrier according to the invention.
  • the reference numeral 1 designates the base body of the wafer carrier.
  • the reference number 2 denotes functional trenches and depressions for the gas foil rotation.
  • 3 denotes further functional structures such as areas in which the satellites are larger than the wafers.
  • Numeral 4 denotes satellites for the wafers.
  • the reference number 5 designates functional bores. 6 correspondingly rounded edges.

Landscapes

  • 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)
  • Crystals, And After-Treatments Of Crystals (AREA)

Abstract

L'invention concerne un procédé de production d'un support de tranches pourvu d'un revêtement, après nettoyage du support de tranches préfabriqué spécialement de façon mécanique, ledit procédé se caractérisant par le fait que l'on porte à une température élevée le support de tranche nettoyé, qu'on introduit des composants de revêtement pour convertir la surface du support de tranche en une couche de protection ou bien pour créer le dépôt des composants amenés, de façon qu'ils forment une couche de protection. L'invention se caractérise par le fait que le support de tranches selon l'invention, pourvu de son revêtement spécial, peut être utilisé dans un système et dans un procédé de traitement par dépôt chimique en phase vapeur haute température de tranches, impliquant l'utilisation de gaz agressifs, de telle sorte que parallèlement au dépôt reproductible des séries de couches souhaitées, avec une très grande uniformité des caractéristiques de matière, il n'y a aucune interaction chimique avec le support de tranches.
EP00940151A 1999-04-30 2000-04-26 Procede de production d'un support de tranches dans un reacteur de depot chimique en phase vapeur haute temperature Withdrawn EP1123560A2 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE19919902A DE19919902A1 (de) 1999-04-30 1999-04-30 Verfahren zur Herstellung eines Waferträgers, der insbesondere in einem Hochtemperatur-CVD-Reaktor bzw. bei einem Hochtemperatur-CVD-Verfahren unter Einsatz agressiver Gase Verwendung findet
DE19919902 1999-04-30
PCT/DE2000/001312 WO2000067311A2 (fr) 1999-04-30 2000-04-26 Procede de production d'un support de tranches utilise en particulier dans un reacteur de depot chimique en phase vapeur haute temperature ou selon un procede de depot chimique en gaz vapeur haute temperature impliquant l'utilisation de gaz agressifs

Publications (1)

Publication Number Publication Date
EP1123560A2 true EP1123560A2 (fr) 2001-08-16

Family

ID=7906542

Family Applications (1)

Application Number Title Priority Date Filing Date
EP00940151A Withdrawn EP1123560A2 (fr) 1999-04-30 2000-04-26 Procede de production d'un support de tranches dans un reacteur de depot chimique en phase vapeur haute temperature

Country Status (6)

Country Link
US (1) US20010014397A1 (fr)
EP (1) EP1123560A2 (fr)
JP (1) JP2002543615A (fr)
KR (1) KR20010053335A (fr)
DE (1) DE19919902A1 (fr)
WO (1) WO2000067311A2 (fr)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101272977B1 (ko) * 2010-11-16 2013-06-10 엘지이노텍 주식회사 서셉터 및 이의 제조 방법
DE102013114203A1 (de) * 2013-12-17 2015-06-18 Osram Opto Semiconductors Gmbh Waferträger, Reaktor und Verfahren zur Temperaturmessung
DE102014103505A1 (de) 2014-03-14 2015-09-17 Aixtron Se Beschichtetes Bauteil eines CVD-Reaktors und Verfahren zu dessen Herstellung
CN105112888B (zh) * 2015-08-27 2017-12-08 常州天合光能有限公司 一种石墨舟的饱和方法
DE102016110408A1 (de) 2016-06-06 2017-12-07 Aixtron Se Beschichteter Kohlenstoffkörper in einem CVD-Reaktor
CN111604222B (zh) * 2020-06-05 2021-05-18 扬州信尚电子科技有限公司 一种芯片表面硅脂涂抹装置

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS61124574A (ja) * 1984-11-20 1986-06-12 Hitachi Chem Co Ltd 化学蒸着法
JPH08227933A (ja) * 1995-02-20 1996-09-03 Shin Etsu Chem Co Ltd 静電吸着機能を有するウエハ加熱装置
TW303505B (en) * 1996-05-08 1997-04-21 Applied Materials Inc Substrate support chuck having a contaminant containment layer and method of fabricating same
EP0901152B1 (fr) * 1997-09-03 2003-04-02 Nippon Pillar Packing Co., Ltd. Support de plaques semi-conductrice avec un revêtement en carbure de silicium obtenu par CVD
TW432453B (en) * 1998-11-12 2001-05-01 Applied Materials Inc Apparatus for protecting a substrate support surface and method of fabricating same

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO0067311A2 *

Also Published As

Publication number Publication date
KR20010053335A (ko) 2001-06-25
JP2002543615A (ja) 2002-12-17
WO2000067311A2 (fr) 2000-11-09
DE19919902A1 (de) 2000-11-02
US20010014397A1 (en) 2001-08-16
WO2000067311A3 (fr) 2001-04-05

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