WO1998058408A1 - Substrat silicium sur isolant (soi) et procede d'elaboration, dispositif a semi-conducteurs et procede de fabrication - Google Patents
Substrat silicium sur isolant (soi) et procede d'elaboration, dispositif a semi-conducteurs et procede de fabrication Download PDFInfo
- Publication number
- WO1998058408A1 WO1998058408A1 PCT/JP1998/002756 JP9802756W WO9858408A1 WO 1998058408 A1 WO1998058408 A1 WO 1998058408A1 JP 9802756 W JP9802756 W JP 9802756W WO 9858408 A1 WO9858408 A1 WO 9858408A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- silicon layer
- substrate
- manufacturing
- silicon
- semiconductor device
- Prior art date
Links
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L21/00—Processes or apparatus adapted for the manufacture or treatment of semiconductor or solid state devices or of parts thereof
- H01L21/70—Manufacture or treatment of devices consisting of a plurality of solid state components formed in or on a common substrate or of parts thereof; Manufacture of integrated circuit devices or of parts thereof
- H01L21/71—Manufacture of specific parts of devices defined in group H01L21/70
- H01L21/76—Making of isolation regions between components
- H01L21/762—Dielectric regions, e.g. EPIC dielectric isolation, LOCOS; Trench refilling techniques, SOI technology, use of channel stoppers
- H01L21/7624—Dielectric regions, e.g. EPIC dielectric isolation, LOCOS; Trench refilling techniques, SOI technology, use of channel stoppers using semiconductor on insulator [SOI] technology
- H01L21/76248—Dielectric regions, e.g. EPIC dielectric isolation, LOCOS; Trench refilling techniques, SOI technology, use of channel stoppers using semiconductor on insulator [SOI] technology using lateral overgrowth techniques, i.e. ELO techniques
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L21/00—Processes or apparatus adapted for the manufacture or treatment of semiconductor or solid state devices or of parts thereof
- H01L21/02—Manufacture or treatment of semiconductor devices or of parts thereof
- H01L21/04—Manufacture or treatment of semiconductor devices or of parts thereof the devices having at least one potential-jump barrier or surface barrier, e.g. PN junction, depletion layer or carrier concentration layer
- H01L21/18—Manufacture or treatment of semiconductor devices or of parts thereof the devices having at least one potential-jump barrier or surface barrier, e.g. PN junction, depletion layer or carrier concentration layer the devices having semiconductor bodies comprising elements of Group IV of the Periodic System or AIIIBV compounds with or without impurities, e.g. doping materials
- H01L21/20—Deposition of semiconductor materials on a substrate, e.g. epitaxial growth solid phase epitaxy
- H01L21/2003—Deposition of semiconductor materials on a substrate, e.g. epitaxial growth solid phase epitaxy characterised by the substrate
- H01L21/2007—Bonding of semiconductor wafers to insulating substrates or to semiconducting substrates using an intermediate insulating layer
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L21/00—Processes or apparatus adapted for the manufacture or treatment of semiconductor or solid state devices or of parts thereof
- H01L21/70—Manufacture or treatment of devices consisting of a plurality of solid state components formed in or on a common substrate or of parts thereof; Manufacture of integrated circuit devices or of parts thereof
- H01L21/71—Manufacture of specific parts of devices defined in group H01L21/70
- H01L21/76—Making of isolation regions between components
- H01L21/762—Dielectric regions, e.g. EPIC dielectric isolation, LOCOS; Trench refilling techniques, SOI technology, use of channel stoppers
- H01L21/7624—Dielectric regions, e.g. EPIC dielectric isolation, LOCOS; Trench refilling techniques, SOI technology, use of channel stoppers using semiconductor on insulator [SOI] technology
- H01L21/76264—SOI together with lateral isolation, e.g. using local oxidation of silicon, or dielectric or polycristalline material refilled trench or air gap isolation regions, e.g. completely isolated semiconductor islands
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L21/00—Processes or apparatus adapted for the manufacture or treatment of semiconductor or solid state devices or of parts thereof
- H01L21/70—Manufacture or treatment of devices consisting of a plurality of solid state components formed in or on a common substrate or of parts thereof; Manufacture of integrated circuit devices or of parts thereof
- H01L21/71—Manufacture of specific parts of devices defined in group H01L21/70
- H01L21/76—Making of isolation regions between components
- H01L21/762—Dielectric regions, e.g. EPIC dielectric isolation, LOCOS; Trench refilling techniques, SOI technology, use of channel stoppers
- H01L21/7624—Dielectric regions, e.g. EPIC dielectric isolation, LOCOS; Trench refilling techniques, SOI technology, use of channel stoppers using semiconductor on insulator [SOI] technology
- H01L21/76264—SOI together with lateral isolation, e.g. using local oxidation of silicon, or dielectric or polycristalline material refilled trench or air gap isolation regions, e.g. completely isolated semiconductor islands
- H01L21/76281—Lateral isolation by selective oxidation of silicon
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L21/00—Processes or apparatus adapted for the manufacture or treatment of semiconductor or solid state devices or of parts thereof
- H01L21/70—Manufacture or treatment of devices consisting of a plurality of solid state components formed in or on a common substrate or of parts thereof; Manufacture of integrated circuit devices or of parts thereof
- H01L21/77—Manufacture or treatment of devices consisting of a plurality of solid state components or integrated circuits formed in, or on, a common substrate
- H01L21/78—Manufacture or treatment of devices consisting of a plurality of solid state components or integrated circuits formed in, or on, a common substrate with subsequent division of the substrate into plural individual devices
- H01L21/82—Manufacture or treatment of devices consisting of a plurality of solid state components or integrated circuits formed in, or on, a common substrate with subsequent division of the substrate into plural individual devices to produce devices, e.g. integrated circuits, each consisting of a plurality of components
- H01L21/84—Manufacture or treatment of devices consisting of a plurality of solid state components or integrated circuits formed in, or on, a common substrate with subsequent division of the substrate into plural individual devices to produce devices, e.g. integrated circuits, each consisting of a plurality of components the substrate being other than a semiconductor body, e.g. being an insulating body
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L21/00—Processes or apparatus adapted for the manufacture or treatment of semiconductor or solid state devices or of parts thereof
- H01L21/70—Manufacture or treatment of devices consisting of a plurality of solid state components formed in or on a common substrate or of parts thereof; Manufacture of integrated circuit devices or of parts thereof
- H01L21/77—Manufacture or treatment of devices consisting of a plurality of solid state components or integrated circuits formed in, or on, a common substrate
- H01L21/78—Manufacture or treatment of devices consisting of a plurality of solid state components or integrated circuits formed in, or on, a common substrate with subsequent division of the substrate into plural individual devices
- H01L21/82—Manufacture or treatment of devices consisting of a plurality of solid state components or integrated circuits formed in, or on, a common substrate with subsequent division of the substrate into plural individual devices to produce devices, e.g. integrated circuits, each consisting of a plurality of components
- H01L21/84—Manufacture or treatment of devices consisting of a plurality of solid state components or integrated circuits formed in, or on, a common substrate with subsequent division of the substrate into plural individual devices to produce devices, e.g. integrated circuits, each consisting of a plurality of components the substrate being other than a semiconductor body, e.g. being an insulating body
- H01L21/86—Manufacture or treatment of devices consisting of a plurality of solid state components or integrated circuits formed in, or on, a common substrate with subsequent division of the substrate into plural individual devices to produce devices, e.g. integrated circuits, each consisting of a plurality of components the substrate being other than a semiconductor body, e.g. being an insulating body the insulating body being sapphire, e.g. silicon on sapphire structure, i.e. SOS
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L21/00—Processes or apparatus adapted for the manufacture or treatment of semiconductor or solid state devices or of parts thereof
- H01L21/70—Manufacture or treatment of devices consisting of a plurality of solid state components formed in or on a common substrate or of parts thereof; Manufacture of integrated circuit devices or of parts thereof
- H01L21/71—Manufacture of specific parts of devices defined in group H01L21/70
- H01L21/76—Making of isolation regions between components
- H01L21/762—Dielectric regions, e.g. EPIC dielectric isolation, LOCOS; Trench refilling techniques, SOI technology, use of channel stoppers
- H01L21/7624—Dielectric regions, e.g. EPIC dielectric isolation, LOCOS; Trench refilling techniques, SOI technology, use of channel stoppers using semiconductor on insulator [SOI] technology
- H01L21/76264—SOI together with lateral isolation, e.g. using local oxidation of silicon, or dielectric or polycristalline material refilled trench or air gap isolation regions, e.g. completely isolated semiconductor islands
- H01L21/76275—Vertical isolation by bonding techniques
Definitions
- the present invention relates to a silicon-on-insulator (S0I) substrate and a silicon-on-sapphire (SOS) substrate.
- the present invention relates to a semiconductor substrate having a single-crystal silicon semiconductor layer formed thereon and a method of manufacturing the same, and more particularly, to a semiconductor substrate having a silicon layer with less dislocations and defects and good surface flatness, and a method of manufacturing the same.
- the present invention also relates to a semiconductor device formed on the semiconductor substrate and a method for manufacturing the same.
- S0I, SOS, and the like have been known as a substrate material having a structure in which a single crystal silicon semiconductor layer is formed on an insulator.
- a semiconductor substrate having a single-crystal silicon semiconductor layer formed on an insulator layer, including the SOS substrate and the SOS substrate, is also collectively referred to as an SOI substrate.
- SOI substrates are widely applied to device fabrication, and are superior to ordinary silicon substrates in the following points.
- Laminating method After bonding a silicon single crystal substrate to another silicon single crystal substrate whose surface has been thermally oxidized using heat treatment or an adhesive, mechanical polishing, chemical etching, or the like is used. A method of uniformly thinning the silicon layer on one side.
- Solid phase epitaxial growth method After oxidizing the surface of the silicon substrate, a window is opened in a part of the oxide film to expose the silicon substrate, and amorphous silicon is grown thereon. Next, heat treatment is performed, and the amorphous silicon layer is crystallized by a solid phase epitaxial growth in the lateral direction, starting from a portion in contact with the exposed silicon.
- bonded SOI substrates and SIMOX substrates have the disadvantage of low snapback withstand voltage and low ESD (electrostatic discharge) of devices (for example, field effect transistors) fabricated on them, resulting in poor quality.
- ESD electrostatic discharge
- the element is an FET (field effect transistor)
- hot carrier generated at the junction between the body and the drain accumulates in the body when the device operates as an FET. This means that the drain current flowing between the in section, the body section, and the source section sharply increases, and the withstand voltage decreases.
- ESD means the withstand voltage when the element is destroyed by an electric shock such as static electricity, and the specification is 2000 V which can withstand static electricity normally generated by humans.
- S0S technology is known as the predecessor of SOI technology.
- SOS substrates have been used mainly for devices that require radiation resistance.
- the SOS substrate has features such as low noise through the substrate due to the thick insulating layer in addition to the features of the SOI substrate such as small parasitic capacitance.
- the carrier life at the interface between the silicon layer and the sapphire is shortened, so that the hot carrier generated at the junction between the body and the drain when the FET operates is immediate. It is difficult to re-join and accumulate in the body. Therefore, the current flowing between the drain, the body, and the source does not increase rapidly, and the withstand voltage does not decrease.
- a high snapback withstand voltage is a major feature of the SOS substrate.
- the SOS substrate is manufactured by heteroepitaxially growing silicon on a sapphire substrate, there is a difference in the lattice constant and thermal expansion coefficient between the silicon layer and the sapphire substrate ( ⁇ — A1203).
- ⁇ — A1203 the lattice constant and thermal expansion coefficient between the silicon layer and the sapphire substrate
- the silicon substrate an intermediate layer such as an oxide layer or a fluoride layer
- a SO I substrate a single crystal silicon layer was Epitakisharu grown on its, eg if ⁇ the intermediate layer - A 1 2 03
- the lifetime of the carrier at the interface between the silicon layer and the intermediate layer is similarly shortened, and the SOS substrate is also known. It is expected that the same high ⁇ snapback voltage can be obtained, but the problem is that the crystallinity of the silicon layer is reduced and the surface roughness is increased due to the difference in lattice constant and coefficient of thermal expansion.
- silicon ions are implanted into the silicon layer to make the interface side with sapphire amorphous, and then annealed to recrystallize.
- force crystal defects are improved reduced crystalline 5 ', still 1 0 9 ZCM 2 about crystal defects, In particular, stacking faults remained.
- the silicon layer of the S0S substrate or the S0I substrate has a problem that the crystal defect density increases as approaching the interface with the insulating base. Therefore, when a silicon layer with a thickness of 0.05 to 0.3 m is used, such as when fabricating a device for high speed and low power consumption on these substrates, an extremely large amount of It will contain crystal defects.
- the silicon layers of these S0S and S0I substrates have poor orientation, and the (001) plane contains components of the (110) plane and the (111) plane. And the lattice constant of the (00 1) plane grown parallel to the substrate plane and the lattice constant of the (100) plane perpendicular to the substrate plane due to the inclusion of strain. Was. Therefore, S ⁇ S substrates using sapphire substrates and S0I substrates using intermediate layers such as oxide layers and fluoride layers deposited on silicon substrates are bonded S0I substrates and SIMOX.
- the crystallinity and surface flatness of the silicon layer are poor, and when semiconductor devices, such as MOSFETs (metal-oxide-semiconductor field-effect transistors) are formed on those substrates, the cause of frit force noise In addition, the operating performance and reliability of the FET are degraded, such as lowering of the withstand voltage of the gate oxide film, lowering of the ESD, lowering of the effective mobility and the transconductance.
- MOSFETs metal-oxide-semiconductor field-effect transistors
- An intermediate layer such as an oxide layer or a fluoride layer on a S ⁇ S substrate or silicon substrate, and a crystalline silicon layer thereon
- the crystallinity and surface flatness of the silicon layer are improved and the resulting device performance is improved, and the snap-back breakdown voltage and ESD can be further increased, the device performance and performance will be improved. Very useful for reliability.
- the present invention has a problem of an SOI substrate in which an intermediate layer such as an oxide layer or a fluoride layer is deposited on a conventional SOS substrate or a silicon substrate, and a silicon layer is epitaxially grown thereon. Solves the problems and has good crystallinity and surface flatness.
- the present inventors have proposed a method of producing an SOS substrate by growing a silicon layer on a sapphire substrate, or depositing an oxide layer or a fluoride layer as an intermediate layer on a silicon substrate,
- an SOI substrate is fabricated by growing a silicon layer thereon
- heat treatment is performed in an oxidizing atmosphere to oxidize a part of the surface of the silicon layer.
- the silicon oxide layer is removed by etching with hydrofluoric acid or the like, a silicon layer with few defects and high orientation remains afterwards.
- This silicon layer is used as a seed layer and The present inventors have found that a highly crystalline and highly oriented silicon layer with extremely few defects can be formed by homoepitaxial growth of the silicon layer again, and have accomplished the present invention.
- the present inventors have proposed a method of fabricating an SOS substrate by growing a silicon layer on a sapphire substrate, or depositing an oxide layer or a fluoride layer as an intermediate layer on a silicon substrate and forming a silicon layer thereon.
- a silicon layer by growing a layer, heating the crystal in a hydrogen atmosphere after growing the (C) silicon layer significantly improves the crystallinity and surface flatness of the silicon layer
- (D) the growth is temporarily interrupted during the growth of the silicon layer, and the surface is flattened and the crystallinity of the silicon layer is improved by performing a heat treatment in a hydrogen atmosphere, and then the silicon layer is again formed thereon.
- the present inventors formed a MOSFET on an S ⁇ I substrate having few defects, high crystallinity and high orientation, and a small surface roughness, for example, manufactured by the above manufacturing method. In this case, the present inventors have found that remarkable improvements in device performance, such as improvement in operation speed, ESD, and reduction in flicker noise, have been achieved as compared with the related art, and the present invention has been accomplished.
- the S0I substrate according to claim 1 of the present invention includes an insulating base and a crystalline silicon layer epitaxially grown thereon, wherein the insulating base is a single crystal oxide substrate, Alternatively, an SOI substrate composed of a laminated substrate including a silicon substrate and a crystalline oxide layer or a fluoride layer deposited thereon, wherein the defect density of the crystalline silicon layer is 4 X 1 0 8 or Z c m 2 or less, and wherein the said surface roughness force crystalline silicon layer? is 4 nm or less 0. 0 5 nm or more.
- the SOI substrate according to claim 2 of the present invention is the S ⁇ I substrate according to claim 1, wherein the defect density of the crystalline silicon layer is 4 ⁇ 10 8 / cm 2 or less over the entire depth direction.
- the defect density of crystal silicon layer is 1 X 1 0 7 cells / c m @ 2 or less over the entire depth direction Features.
- the SOI substrate according to claim 5 of the present invention is the SOI substrate according to claim 1, wherein the X-ray diffraction rocking curve of the (004) peak of the crystalline silicon layer grown parallel to the substrate surface. Is characterized in that the full width at half maximum is 100 arcsec or less and 100 arcsec or more.
- the SOI substrate according to claim 6 of the present invention is the SOI substrate according to claim 1, wherein a lattice constant of a silicon (100) plane perpendicular to a substrate plane of the crystalline silicon layer is 5 .4 1 angstrom or more and 5.44 angstrom or less.
- the SOI substrate according to claim 7 of the present invention is the SOI substrate according to claim 1, wherein a lattice constant of a silicon (01) plane parallel to the substrate surface of the crystalline silicon layer is 5 .4 4 angstrom or less 5.5.4 1 angstrom or more.
- the SOI substrate according to claim 8 of the present invention is the SOI substrate according to claim 1, wherein the crystalline silicon layer has a substrate with respect to a lattice constant of a silicon (100) plane perpendicular to a substrate plane.
- the ratio of the lattice constant of the silicon (001) plane parallel to the plane is not more than 1.005 and not less than 0.995.
- the SOI substrate according to claim 9 of the present invention is the SOI substrate according to claim 1, wherein the intensity of 220 reflections of the crystalline silicon layer with respect to 0.4 reflections parallel to the substrate surface in X-ray diffraction measurement.
- the ratio is not more than 0.1.
- the S0I substrate according to claim 10 of the present invention is the S0I substrate according to claim 1, wherein the insulating base is the single crystal oxide substrate, and the single crystal oxide substrate is sapphire. It is a substrate.
- the SOI substrate according to claim 11 of the present invention is the SOI substrate according to claim 1, wherein the insulating base is the laminated substrate, and the crystalline base deposited on the silicon substrate as the substrate.
- the oxide layer is, "- A l 2_Rei 3, 7 -A 12_Rei_3 one A l 2 0 3, Mg_ ⁇ 'A l 2_Rei_3, C e 0 2, S r T i ⁇ 3, ( Z r 1- x 'Y x) ⁇ _Y, P b (Z r, T i) 0 3, L i T a 0 3, L i N b 0 3 of consists either the fluoride layer is C a It is characterized by consisting of F2.
- a method for manufacturing an SOI substrate according to claim 12 of the present invention is a method for manufacturing an SOI substrate in which a silicon layer having a low defect density is formed on an insulating base,
- the method for manufacturing an SOI substrate according to claim 13 of the present invention is a method for manufacturing an SOI substrate in which a silicon layer having a low defect density is formed on an insulating base,
- the method for manufacturing an S0I substrate according to claim 14 of the present invention is the manufacturing method according to claim 13, wherein the silicon layer formed in the step (d) is formed by removing the silicon layer formed in the step (a).
- the process is characterized by repeating the above steps (b) to (d) two or more times, assuming that the silicon layer is 1).
- the oxidizing atmosphere may include a mixed gas of oxygen and hydrogen or water vapor. It is characterized by.
- the method for manufacturing a S0I substrate according to claim 16 of the present invention is the method according to claim 12 or 14.
- the method for manufacturing an S0I substrate according to claim 17 of the present invention is the method according to any one of claims 12 to 14, wherein the temperature of the heat treatment in the oxidizing atmosphere is 800 ° C. It is characterized in that the temperature is not more than 1200 ° C.
- the method for manufacturing an SOI substrate according to claim 18 of the present invention is the method for manufacturing an SOI substrate according to claim 13 or 14, wherein a second silicon layer is epitaxially grown on the remaining first silicon layer.
- the operating temperature is not less than 550 ° C and not more than 150 ° C.
- the method for manufacturing an S0I substrate according to claim 19 of the present invention is the manufacturing method according to claim 13 or 14, wherein a second silicon layer is formed on the remaining first silicon layer by epitaxy.
- the method is characterized in that the growth temperature is not less than 65 ° C. and not more than 950 ° C.
- the method for manufacturing an SOI substrate according to claim 20 of the present invention is the method for manufacturing an SOI substrate according to claim 13 or 14, wherein a second silicon layer is epitaxially grown on the remaining first silicon layer. Before the step of performing, the remaining first silicon layer is heat-treated in a hydrogen atmosphere or in a vacuum.
- the method for manufacturing an SOI substrate according to claim 21 of the present invention is the manufacturing method according to claim 13 or 14, wherein a second silicon layer is epitaxially grown on the remaining first silicon layer. In the step, silicon oxide is not generated on the surface of the remaining first silicon layer and in the second silicon layer.
- the method for manufacturing an S0I substrate according to claim 22 of the present invention is the method according to claim 13 or 14, wherein a second silicon layer is formed on the remaining first silicon layer by epitaxy.
- the base pressure of the growth chamber of the equipment used for growth is characterized by a pressure of 10 -7 Torr or less.
- the method for manufacturing an SOI substrate according to claim 23 of the present invention is the method for manufacturing an SOI substrate according to claim 13 or 14, wherein a second silicon layer is epitaxially grown on the remaining first silicon layer.
- the method is UHV—CVD or MBE.
- the method for manufacturing an SOI substrate according to claim 24 of the present invention is the manufacturing method according to claim 13 or 14, wherein a second silicon layer is epitaxially grown on the remaining first silicon layer. Sometimes, the growth temperature is set high only in the initial stage of growth.
- the method for manufacturing an S0I substrate according to claim 25 of the present invention is the method according to claim 24, wherein the method for epitaxially growing the second silicon layer is an APCVD method or an LPCVD method.
- the method for manufacturing an SOI substrate according to claim 26 of the present invention is the method for manufacturing an SOI substrate according to claim 12, wherein, after the step of removing the silicon oxide film by etching, the SOI substrate is placed in a nitrogen atmosphere. O characterized by a heat treatment step.
- the method for manufacturing an SOI substrate according to claim 27 of the present invention is the method for manufacturing an SOI substrate according to claim 13 or 14, wherein after the step of epitaxially growing the second silicon layer, the SOI substrate is A heat treatment in an atmosphere.
- the method for manufacturing an SOI substrate according to claim 28 of the present invention is the method for manufacturing an SOI substrate according to claim 26 or 27, further comprising a step of performing a heat treatment in an oxidizing atmosphere after the step of performing the heat treatment in the nitrogen atmosphere. It is characterized by the following.
- the method for manufacturing an S0I substrate according to claim 29 of the present invention is the method according to claim 12, wherein the silicon oxide film is removed by etching. A heat treatment in hydrogen.
- the method for manufacturing an SOI substrate according to claim 30 of the present invention is the method for manufacturing an SOI substrate according to claim 13 or 14, wherein after the step of epitaxially growing the second silicon layer, a step of performing a heat treatment in hydrogen. It is characterized by having.
- the method for manufacturing an S 0 I substrate according to claim 31 of the present invention is the manufacturing method according to claim 29 or 30, wherein the temperature of the heat treatment in hydrogen is 800 ° C. or more and 120 ° C. C or less.
- the method of manufacturing an S0I substrate according to claim 32 of the present invention is the method according to any one of claims 12 to 31, wherein the step of forming the first silicon layer is performed immediately after the step of forming the first silicon layer. It is characterized by including a step of injecting a compound to amorphize a deep portion of the silicon layer, performing an annealing process, and recrystallization.
- the annealing is performed in a nitrogen atmosphere first, and then in an oxidizing atmosphere. It is characterized by the following.
- the method for manufacturing an SOI substrate according to claim 34 of the present invention is the method according to claim 33, wherein the silicon oxide film is removed by etching after the annealing in the oxidizing atmosphere. It is characterized by including.
- the method for manufacturing an S0I substrate according to claim 35 of the present invention is the method according to claim 12, wherein after the step of removing the silicon oxide film by etching, And a step of performing mechanical polishing.
- the method for manufacturing an SII substrate according to claim 36 of the present invention is the method according to claim 13 or 14, wherein after the step of epitaxially growing the second silicon layer, And / or mechanical polishing.
- the method for manufacturing an SOI substrate according to claim 37 of the present invention is the method according to any one of claims 12 to 36, wherein a first silicon layer is formed on the insulating base. Is a step of epitaxially growing a first silicon layer on an insulating base.
- the method for manufacturing an SOI substrate according to claim 38 of the present invention is the method for manufacturing an SOI substrate according to any one of claims 12 to 37, wherein the insulating base is a single crystal oxide substrate. .
- the manufacturing method of the S0I substrate according to claim 39 of the present invention is characterized in that, in the manufacturing method of claim 38, the insulating base is a sapphire substrate.
- the method for manufacturing an S0I substrate according to claim 40 of the present invention is the method according to any one of claims 12 to 37, wherein the insulating base is deposited on a silicon substrate as a substrate. It is a laminated substrate comprising a crystalline oxide layer or a fluoride layer.
- a process according to claim 4 1 of the SOI substrate of the present invention is the manufacturing method of claim 4 0, the crystallinity of the oxide layer is shed - A 1 2 0 3, ⁇ - Alpha 1 2 0 3,
- the crystalline fluoride layer is characterized by comprising the C a F 2.
- a method for manufacturing an S 0 I substrate according to claim 42 of the present invention is a method for manufacturing an S 0 I substrate, wherein a silicon layer having a low defect density is formed on an insulating base,
- a heat treatment is performed on the silicon layer in hydrogen.
- the method for manufacturing an SOI substrate according to claim 43 of the present invention is characterized in that: A method for manufacturing an S 0 I substrate on which a silicon layer having a low defect density is formed.
- the method of manufacturing an SOI substrate according to claim 44 of the present invention is characterized in that, in the method of manufacturing claim 43, the steps (a) to (c) are performed in situ.
- the method for manufacturing an SOI substrate according to claim 45 of the present invention is the method for manufacturing an SOI substrate according to any one of the items 42 to 44, wherein the temperature of the heat treatment in hydrogen is 800 ° C. or higher and 120 ° C. C or less.
- the method for manufacturing an S0I substrate according to claim 46 of the present invention is the method according to any one of claims 42 to 45, wherein the step of forming the first silicon layer comprises:
- the method is characterized by including a step of implanting ions to form a deep portion of the silicon layer into an amorphous phase, performing an annealing process, and recrystallization.
- the method for manufacturing an SOI substrate according to claim 47 of the present invention is the method according to claim 42 or 43, wherein silicon ion is implanted immediately after the step of heat-treating the first silicon layer in hydrogen. Then, the deep portion of the silicon layer is amorphized, and an annealing process is performed to recrystallize the silicon layer.
- the method for manufacturing an SOI substrate according to claim 48 of the present invention is the method for manufacturing an SOI substrate according to claim 46 or 47, wherein the annealing is performed first in a nitrogen atmosphere, and then in an oxidizing atmosphere. It is characterized by being performed.
- the manufacturing method of the S0I substrate according to claim 49 of the present invention is the manufacturing method according to claim 48, wherein the silicon oxide film is removed by etching after the annealing treatment in the oxidizing atmosphere. And a step of performing
- the manufacturing method of an SOI substrate according to claim 50 of the present invention is the manufacturing method according to claim 42, wherein, after the heat treatment in hydrogen, a step of subjecting the silicon layer to chemical, Z, or mechanical polishing. It is characterized by having.
- the manufacturing method of an SOI substrate according to claim 51 of the present invention is the manufacturing method according to claim 43, wherein after the step of epitaxially growing the second silicon layer, a chemical and / or mechanical Characterized by having a step of subjecting to mechanical polishing.
- the method for manufacturing an S0I substrate according to claim 52 of the present invention is the method according to any one of claims 42 to 51, wherein a first silicon layer is formed on the insulating base.
- the method for manufacturing an S0I substrate according to claim 53 of the present invention is the method according to any one of claims 42 to 51, wherein the insulating base is a single crystal oxide substrate.
- a method for manufacturing an SOI substrate according to claim 54 of the present invention is characterized in that, in the method according to claim 53, the single crystal oxide substrate is a sapphire substrate.
- the manufacturing method of an SOI substrate according to claim 55 of the present invention is the manufacturing method according to any one of claims 42 to 51, wherein the insulating base is a crystal deposited on a silicon substrate as a substrate.
- a laminated substrate comprising a conductive oxide layer or a fluoride layer.
- the manufacturing method of the S 0 I substrate according to claim 56 of the present invention is the method according to claim 55.
- the crystallinity of the oxide layer is, alpha-A l 2_Rei 3, ⁇ - A l 2 Rei_3, ⁇ one A l 2 03, Mg O ' A l 2_Rei_3, C E_ ⁇ 2, S r T i 0 3 (Z r !. x, Y x) ⁇ y, P b (Z r, T i) 0 3, L i T A_ ⁇ 3, L i N b 0 3 of either or Rannahli,
- the crystalline fluoride layer is made of C a F 2 .
- an S0I substrate according to claim 57 of the present invention is characterized by being manufactured by the manufacturing method according to any one of claims 12 to 41.
- the S0I substrate according to claim 58 of the present invention is characterized by being manufactured by the manufacturing method according to any one of claims 42 to 56.
- a semiconductor device is a semiconductor device using an SOI substrate as a substrate, wherein the SOI substrate according to any one of claims 1 to 11 is used as the SOI substrate. It is characterized by improved device characteristics.
- a semiconductor device is the semiconductor device according to claim 59, wherein the semiconductor device is at least one of a field-effect transistor and a bipolar transistor,
- the device characteristics improved by using the S0I substrate according to any one of claims 1 to 11 as the I substrate include a mutual inductance, a cutoff frequency, a frit force, a noise, and an elector. It is characterized by being at least one of the static discharges.
- the semiconductor device according to claim 61 of the present invention is the semiconductor device according to claim 59, wherein the semiconductor device is MOSFET, and the SOI substrate according to any one of claims 1 to 11
- the device characteristics that have been improved by using the S0I substrate are at least one of mutual inductance, cutoff frequency, flicker noise, electoric static discharge, snapback breakdown voltage, and breakdown charge. It is characterized by one.
- the semiconductor device according to claim 62 of the present invention is the semiconductor device according to claim 59, wherein the semiconductor device is a bipolar transistor, and the S0I substrate is any one of claims 1 to 11.
- the device characteristics improved by using the S 0 I substrate are at least one of a mutual inductance, a cutoff frequency, a collector current, a leak current characteristic, and a current gain.
- the semiconductor device according to claim 63 of the present invention is the semiconductor device according to claim 59, wherein the semiconductor device is a diode, and the SOI substrate according to any one of claims 1 to 11 as a SOI substrate. It is characterized in that the device characteristics improved by using the 0I substrate are at least one of a reverse bias leakage current characteristic, a forward bias current, and a diode factor.
- the semiconductor device according to claim 64 of the present invention is the semiconductor device according to claim 59, wherein the semiconductor device is a semiconductor integrated circuit, and the SOI substrate is any one of claims 1 to 11.
- the device characteristic improved by using the described S0I substrate is at least one of a frequency characteristic, a noise characteristic, an amplification characteristic, and a power consumption characteristic.
- a semiconductor device according to claim 65 of the present invention is the semiconductor device according to claim 59, wherein the semiconductor device is a semiconductor integrated circuit constituted by a MOSFET, and the semiconductor device is a SOI substrate.
- the device characteristics improved by using the S0I substrate described in any one of 1 to 11 are at least one of frequency characteristics, noise characteristics, amplification characteristics, and power consumption characteristics. It is characterized by.
- the semiconductor device according to claim 66 of the present invention is a semiconductor device using an SOI substrate as a substrate, wherein the SOI substrate is An SOI substrate manufactured by the manufacturing method according to any one of 2 to 41 is used, and thereby device characteristics are improved.
- a semiconductor device according to claim 67 of the present invention is a semiconductor device using an SOI substrate as a substrate, wherein the SOI substrate is a semiconductor device according to any one of claims 42 to 56. It is characterized by the use of an S.sub.I substrate manufactured in accordance with the method, thereby improving the device characteristics.
- the semiconductor device according to claim 68 of the present invention is the semiconductor device according to claim 66 or 67, wherein the semiconductor device is at least one of a field effect transistor and a bipolar transistor, and the device characteristics Is characterized by being at least one of mutual inductance, cut-off frequency, flicker noise, and electrostatic discharge.
- the semiconductor device according to claim 69 of the present invention is the semiconductor device according to claim 66 or 67, wherein the semiconductor device is an M0 SFET, and the device characteristics are mutual inductance, cut-off frequency, flicker noise. At least one of static discharge charge, static discharge charge, snap-back withstand voltage, and dielectric breakdown charge.
- the semiconductor device according to claim 70 of the present invention is the semiconductor device according to claim 66 or 67, wherein the semiconductor device is a bipolar transistor, and the device characteristics are a mutual inductance, a cutoff frequency, and a collector. It is characterized by at least one of one current, leakage current characteristics, and current gain.
- the semiconductor device according to claim 71 of the present invention is the semiconductor device according to claim 66 or 67, wherein the semiconductor device is a diode, and the device characteristics are reverse bias leak current characteristics, forward bias current, Daio It is characterized by at least one of the factors.
- the semiconductor device according to claim 72 of the present invention is the semiconductor device according to claim 66 or 67, wherein the semiconductor device is a semiconductor integrated circuit, and the device characteristics are frequency characteristics, noise characteristics, amplification characteristics, It is characterized by at least one of the power consumption characteristics.
- the semiconductor device according to claim 73 of the present invention is the semiconductor device according to claim 66 or 67, wherein the semiconductor device is a semiconductor integrated circuit configured by a MOSFET, and the device characteristic is: It is characterized by at least one of characteristics, noise characteristics, amplification characteristics, and power consumption characteristics.
- a method for manufacturing a semiconductor device according to claim 74 of the present invention is a method for manufacturing a semiconductor device on an S0I substrate comprising an insulating base and a silicon layer formed thereon.
- step (e) After the silicon layer formed in the step (d) is thermally treated in an oxidizing atmosphere to oxidize a part of the surface side, the formed silicon oxide film is removed by etching. Adjusting the silicon layer to a desired thickness.
- the method for manufacturing a semiconductor device according to claim 75 of the present invention includes: The manufacturing method may further include, immediately after the step of forming the first silicon layer, a step of implanting silicon to amorphize a deep portion of the silicon layer, performing an annealing process, and recrystallization.
- the method for manufacturing a semiconductor device according to claim 76 of the present invention is the method for manufacturing a semiconductor device according to claim 74, wherein after the step (d) of epitaxially growing the second silicon layer, a step of performing a heat treatment in hydrogen is provided. It is characterized by having.
- the method for manufacturing a semiconductor device according to claim 77 of the present invention is the method for manufacturing a semiconductor device according to claim 74, wherein chemical and / or mechanical polishing of the silicon layer is performed before or after the step (e). It is characterized by.
- a method for manufacturing a semiconductor device according to claim 78 of the present invention is a method for manufacturing a semiconductor device on an S0I substrate comprising an insulating base and a silicon layer formed thereon.
- a method for manufacturing a semiconductor device comprising:
- a method for manufacturing a semiconductor device according to claim 79 of the present invention is the method for manufacturing a semiconductor device according to claim 78, wherein a silicon layer is implanted immediately after the step of forming the first silicon layer. Characterized in that it includes a step of amorphizing the deep portion thereof, performing an anneal treatment, and recrystallizing.
- the method for manufacturing a semiconductor device according to claim 80 of the present invention is the method according to claim 78, wherein the silicon layer is chemically and Z- or mechanically polished before or after the step (c). It is characterized by.
- the method for manufacturing a semiconductor device according to claim 81 of the present invention is a method for manufacturing a semiconductor device on an S 0 I substrate comprising an insulating base and a silicon layer formed thereon.
- step (d) After the silicon layer formed in the step (c) is heat-treated in an oxidizing atmosphere to oxidize a part of the surface side, the formed silicon oxide film is removed by etching. Adjusting the silicon layer to a desired thickness.
- the method for manufacturing a semiconductor device according to claim 82 of the present invention is the method according to claim 81, wherein silicon ions are implanted immediately after the step of forming the first silicon layer. Characterized by a step of amorphizing a deep portion of the substrate, performing an annealing process, and recrystallizing.
- FIGS. 1A to 1C are cross-sectional views of an S 0 S substrate during a manufacturing process showing a manufacturing process of an S 0 I substrate according to the invention of claim 12.
- 1 to FIG. 1D are cross-sectional views of the S ⁇ S substrate during a manufacturing process showing a manufacturing procedure of the SOI substrate according to the invention described in claim 13.
- 2A to 2B are cross-sectional views of the S0S substrate during a manufacturing process showing a manufacturing procedure of the S0I substrate according to the invention of claim 42.
- 3A to 3C are cross-sectional views of the SOS substrate during the manufacturing process, showing a manufacturing procedure of the SOI substrate according to the invention of claim 43.
- FIG. 4A to FIG. 4F show that between the step (a) and the step (b) in the invention according to claim 13, silicon ions are implanted into the first silicon layer to make the deep portion amorphous.
- FIG. 4 is a cross-sectional view of the S 0 S substrate during a manufacturing process, showing a manufacturing procedure of the S 0 I substrate to which a step of performing an annealing treatment and recrystallization is added.
- FIG. 5 is a graph showing that the crystal defect density is reduced over the entire thickness direction of the silicon layer in the S0I substrate to which the step of performing the annealing treatment and recrystallization is added.
- FIG. 6A to 6E are photographs showing the results of observation by SEM after pit formation by dipping various SOS substrates in an etchant, and FIG. 6A shows sapphire substrates.
- Fig. 6B shows the silicon layer of the substrate in Fig. 6A implanted with silicon ions to make the deep part amorphous and annealed.
- FIG. 6C shows the recrystallized S0S substrate, and FIG. 6C shows that the first silicon layer is filled with silicon ions between the steps (a) and (b) according to the invention of claim 13.
- FIG.6D shows the SOS substrate of Fig.6C further heated in a hydrogen atmosphere.
- the treated S0S substrate, Figure 6E shows the S SS substrate of Figure 6B in a hydrogen atmosphere.
- the S 0 S substrate subjected to heat treatment, to indicate, respectively.
- FIG. 7 is a cross-sectional configuration diagram of a CM 0 S transistor manufactured using the S 0 S substrate manufactured in Example 1 of the present invention.
- FIG. 8A is a cross-sectional TEM photograph of a substrate for observing the defect density of the silicon layer of the SOS substrate prepared in Comparative Example 1 of the present invention.
- FIG. 8B is a TEM cross-sectional photograph of the substrate for observing the defect density of the silicon layer of the SOS substrate manufactured in Comparative Example 3 of the present invention.
- FIG. 8C is a TEM cross-sectional photograph of the substrate for observing the defect density of the silicon layer of the SOS substrate prepared in Example 6 of the present invention.
- a single crystal oxide substrate such as a sapphire or a single crystal deposited on a silicon substrate as a substrate A12 ⁇ 3, 7 — ⁇ 2 ⁇ 3, ⁇ -AI 2 0 3 M g 0 ⁇ A 1 2 0 3 C e 0 2, S r T i 0 3, (Z r! _ x, Y x) O y, P b (Z r, T i) ⁇ 3, L i T a 0 3, L i N b 0 crystallinity of the oxide layer or the crystalline fluoride layer such as a C a F 2 etc. 3 Ru is used.
- an amorphous material for example, a glass substrate, or Si 2 on a silicon substrate as the substrate can be applied as the insulating base.
- the method for growing an oxide layer or a fluoride layer on a silicon substrate is not particularly limited, and is usually a low pressure chemical vapor deposition (LPCVD) method, an ultra-high vacuum chemical vapor deposition method. Methods (UHV-CVD), molecular beam epitaxy (MBE), sputtering, laser MBE, etc. are used.
- LPCVD low pressure chemical vapor deposition
- UHV-CVD ultra-high vacuum chemical vapor deposition
- MBE molecular beam epitaxy
- sputtering laser MBE, etc.
- the silicon substrate may be subjected to a thermal oxidation treatment in an oxidizing atmosphere.
- FIGS. 1A to 1D show a procedure for manufacturing an SOS substrate according to the invention described in claim 12 or 13.
- a force for epitaxially growing the first silicon layer 2 on the sapphire substrate 1 which is an insulator Phase method (AP CVD method), low pressure chemical vapor method (LP CVD method), ultra-high vacuum chemical vapor method (1111- ⁇ ⁇ 0 method), molecular beam epitaxy method (MBE method), electron beam (EB)
- AP CVD method Phase method
- LP CVD method low pressure chemical vapor method
- MBE method ultra-high vacuum chemical vapor method
- MBE method molecular beam epitaxy method
- EB electron beam
- the thickness of the first silicon layer is not particularly limited, but for example, a range of 0.03 m to 1 m is practical.
- the first silicon layer 2 is heat-treated in an oxidizing atmosphere, as shown in Figure 1 B, the force for forming the silicon oxide layer 3 on the surface?, Rearrangement of atoms by the heat treatment Dislocations and stacking faults, which are generated in the first silicon layer 2 after the epitaxial growth due to lattice mismatch at the interface, are reduced, and portions having different orientations disappear.
- the temperature of the heat treatment in the oxidizing atmosphere is from 500 ° C. to 135 ° C., preferably from 600 ° C. to 130 ° C., and Preferably it is 800 ° C. or more and 1200 ° C. or less. If the temperature is too low, the effect of the rearrangement of the atoms is reduced. On the other hand, if the temperature is too high, there is a problem that the underlying element diffuses into the silicon layer.
- an oxidizing atmosphere is not particularly limited, 0 2, Rei_2 + H 2, H 2 ⁇ , oxidizing gas such as N 2 0, or these oxidizing gases
- An atmosphere of a gas diluted with an inert gas such as N 2 or Ar is usually used.
- a mixed gas of 2 + H 2 or a gas containing H 2 0 is preferable because a greater effect can be obtained with respect to reduction of crystal defects, improvement of crystallinity, and the like.
- the silicon oxide layer 3 is Etch and remove with hydrofluoric acid (BHF).
- the SOS substrate is manufactured as described above.
- the silicon layer is reduced in crystal defects, and has a crystallinity ⁇ orientation. The performance is improved.
- the remaining silicon layer 4 is used as a seed layer, and a second silicon layer 5 is grown thereon by homoepitaxial growth.
- the APCVD method, the LPCVD method, the UHV-CVD method, the MBE method, the EB evaporation method, and the like are used similarly to the first silicon layer. It does not need to be the same as the growth method of
- the growth atmosphere contains as little moisture and oxygen as possible.
- the growth method is such that the base pressure in a state in which no raw material is supplied, such as the UHV-CVD method or the MBE method, is 10.
- a method that has a -7TOI or less and is capable of growing a silicon layer in an ultra-high vacuum atmosphere is preferable.
- a heat treatment in a hydrogen atmosphere or vacuum is performed to remove the natural oxide film and the chemical oxide on the seed layer 4. Is preferably performed.
- the temperature at which the epitaxial growth of the second silicon layer 5 is performed is usually from 400 ° C. to 1200 ° C., preferably from 550 ° C. to 150 ° C., more preferably from 65 ° C. 0 ° C to 950 ° C.
- the formation of a silicon oxide layer on the surface of the seed layer is determined by the amount of moisture and oxygen in the growth atmosphere and the growth temperature, and the lower the amount of moisture and oxygen in the growth atmosphere, the lower the silicon oxide even at low temperatures. Physical layer Difficult to generate.
- the method may grow a silicon layer in an ultra-high vacuum atmosphere as UHV- CVD method or MBE method, a relatively low temperature can be performed Epitaki interstitial growth force 5 ', in which case the heat This is preferable because a high-quality crystalline silicon layer can be obtained because of low local distortion.
- the base pressure is 10 -7 or more in the APCVD method or the LPCVD method, the growth temperature is increased in the early stage of growth to suppress the formation of a silicon oxide layer, and the growth temperature is increased in the middle. The temperature profile to lower the force? It is effective in achieving good epitaxy growth.
- the thickness of the seed layer (silicon layer) 4 for homoepitaxially growing the second silicon layer 5 is not particularly limited, but is preferably 5 nm or more and 1 m or more. It is as follows.
- the deposition of the second silicon layer 5 on the seed layer is the same as the homoepitaxial growth of depositing a silicon layer on a silicon single crystal substrate, and is not affected by the difference in lattice constant. In addition, it has the effect of lowering the growth temperature, which improves the crystallinity and surface flatness compared to conventional heteroepitaxy-grown silicon layers. Also, compared to the seed layer, the silicon layer has more remarkable effects of reducing crystal defects and improving crystallinity and orientation. Moreover, surprisingly, after depositing the second silicon layer, a very low defect density is achieved uniformly throughout the depth of the silicon layer, including the seed layer.
- the deposition of the second silicon layer on the seed layer significantly improves the surface flatness of the silicon layer and achieves a reduction in surface roughness.
- a nitrogen atmosphere is used.
- the process of heat treatment in This can eliminate donor-related defects and impurities in the semiconductor layer. For this reason, for example, it is preferable to form a highly reliable semiconductor device on an SOS substrate, for example, a shift in a voltage at which an operation is started in a MOSFET, that is, a threshold voltage does not occur. Further, it is more preferable to perform a heat treatment in an oxidizing atmosphere after the heat treatment in a nitrogen atmosphere because the effect is further enhanced.
- FIGS. 1A to 1D the steps of FIGS. 1B to 1D are repeated twice or more to reduce the defect density, improve the crystallinity, reduce the surface roughness, etc. However, even more remarkable effects can be achieved.
- FIG. 2A and 2B show a procedure for manufacturing an SOS substrate according to the invention described in claim 42.
- FIG. 2A and 2B show a procedure for manufacturing an SOS substrate according to the invention described in claim 42.
- a first silicon layer 2 is epitaxially grown on a sapphire substrate 1 which is an insulator.
- the growth method includes an APCVD method and an LPCVD method. Method, UHV—CVD method, MBE method, EB evaporation method, etc. are used.
- the silicon layer may be an amorphous silicon layer grown at a low temperature. There is no particular limitation on the thickness of the silicon layer, but for example, a range of 0.03 m to 1 m is practical.
- the first silicon layer 2 is subjected to heat treatment in a hydrogen atmosphere.
- This heat treatment causes the silicon atoms to migrate to the surface and rearrange the crystal.
- the crystallinity is improved and the surface is flattened.
- the constituent elements of the base for example, A 1 in the case of sapphire
- a large amount diffuses into the silicon layer and lowers the crystallinity of the silicon layer and changes the carrier density. Less and preferred Or 800 ° C. or more and 1200 ° C. or less.
- the partial pressure of hydrogen during the heat treatment can be selected in the range of l Torr to 760 Torr.
- the method of adjusting the partial pressure is to evacuate with a vacuum pump. Or dilution with an inert gas.
- the time of heat treatment in hydrogen can be arbitrarily selected, but is preferably 2 minutes to 5 hours, more preferably 5 minutes to 3 hours.
- FIGS. 3A to 3C show a procedure for manufacturing an SOS substrate according to the invention of claim 43.
- a first silicon layer 2 is epitaxially grown on a sapphire substrate 1 by the same method as described above.
- the thickness of the first silicon layer is not particularly limited, but, for example, a range of 0.03 m to 1 m is practical.
- the first silicon layer 2 is subjected to a heat treatment in a hydrogen atmosphere to improve the crystallinity and surface flatness of the first silicon layer 2. Thereafter, as shown in FIG. 3C, this silicon layer is used as a seed layer 6 and a second silicon layer 7 is epitaxially grown thereon.
- the in-situ treatment means that the treatment for depositing the silicon layer and the heating treatment in the hydrogen atmosphere are continuously performed in the same processing apparatus. It is important not to expose.
- the thickness of the silicon seed layer 6 is not particularly limited, but is preferably 5 nm to 1 m, and more preferably 1 O nm to 200 nm.
- heat treatment is performed in a hydrogen atmosphere in a method and conditions for growing the silicon layer.
- the conditions are the same as those described above.
- the second silicon layer 7 is epitaxially grown on the silicon seed layer 6, this deposition is performed by homoepitaxial growth in which a silicon layer is deposited on a silicon single crystal substrate. Same, not affected by differences in lattice constants. In addition, it has the effect of lowering the growth temperature, improving crystallinity and surface flatness compared to conventional heteroepitaxy grown silicon layers.
- silicon does not re-evaporate and disperse even at high temperatures, and the effect of improving the crystallinity and surface flatness of the silicon layer becomes significant. It is valid.
- an atmosphere of an annealing treatment for recrystallization after silicon ion implantation is first used in a nitrogen atmosphere, and then changed to an oxidizing atmosphere. At this time, a silicon oxide film generated by annealing in an oxidizing atmosphere is removed by etching.
- the silicon layer 4 in Fig. When the silicon layer 5 of FIG. 2, the silicon layer 2 of FIG. 2B, and the silicon layer 7 of FIG. 3C are subjected to a surface planarization process such as a chemical or / and mechanical polishing process, This is preferable because it has a good effect on the performance and reliability of the device.
- silicon ions are implanted into the first silicon layer, the deep portion is amorphized, and an annealing process is performed.
- the S0I substrate fabricated by performing the step of recrystallizing from the surface layer by using the silicon layer even if the thickness of the silicon layer is as small as 0.1 m as shown in, throughout towards the depth direction of the silicon layer, 1 0 7 Z cm 2 or less crystal defect density.
- the half width of the X-ray diffraction opening curve of the (004) peak of the silicon layer grown parallel to the substrate surface is about 700 arcsec, which is perpendicular to the substrate surface.
- the lattice constant of the silicon (0 0 1) plane parallel to the (0) plane and the substrate plane is around 5.43 angstroms, and the (0 0 1)
- the lattice constant ratio of the surface is 1.005 or less, 0.995 or more, and in the X-ray diffraction measurement, The ratio of the intensity of the 220 reflection to the parallel 2004 reflection is 0.1 or less.
- FIGS. 6A to 6E show photographs of various SOS substrates when pits were formed on a silicon layer using the above-mentioned etching solution and observed by SEM.
- a first silicon layer is epitaxially grown on a sapphire substrate by an APC VD method using an SOS substrate (FIG. 6A), or silicon ions are implanted into the first silicon layer.
- An S 0 S substrate that had its deep portion turned into amorphous, and then subjected to an annealing treatment and recrystallization from the surface layer
- silicon ions are implanted into the first silicon layer, the deep portion thereof is amorphized, and an annealing process is performed.
- silicon ions are implanted into the first silicon layer, the deep portion thereof is amorphized, and an annealing process is performed.
- an S 0 I substrate fabricated by performing a step of recrystallization from the surface layer by using a silicon layer, even if the thickness of the silicon layer is as small as 0.1 m to 0.3 m, throughout the depth direction of the silicon layer, 1 0 7 Zc m @ 2 less crystal defect density.
- the half width of the X-ray diffraction rocking force of the (004) peak of the silicon layer grown parallel to the substrate surface is about 700 arcsec, and the silicon layer is perpendicular to the substrate surface.
- the lattice constant of the (001) plane parallel to the (100) plane and the substrate plane is about 5.43 angstroms, and the lattice constant of the (100) plane is (001). )
- the ratio of the lattice constant of the plane is 1.00 5 or less 0.
- the surface roughness is defined as 1 using an atomic force microscope.
- the surface roughness of the SOI substrate manufactured Ri by the present invention are all been made at 4 nm or less.
- a single crystal oxide substrate such as sapphire, deposited silicon on a substrate as the substrate "- A 12_Rei_3, y _A l 2_Rei_3, 0 _ ⁇ 1 2 ⁇ 3, M g 0 ⁇ A 1 2 0 3, C e 0 2, S r T i ⁇ 3, (Z r les x, Y x) O y, P b (Z r, T i) 0 3, L i T a 0 3, L i N b 0 crystallinity of the oxide layer, such as 3 also properly on top of the crystalline fluoride layer such as a C a F 2, produced very little, yet good silicon layer on the surface flatness of the crystal defects So that this S 0 I On the substrate, it is possible to form a semiconductor device having excellent performance that cannot be obtained by a conventional SOI substrate having the same material composition.
- the semiconductor device of the present invention includes, as a pre-process, a high quality substrate for improving the crystallinity and surface flatness of the SOI substrate as a pre-process. This can be obtained by including the steps described above, and the subsequent steps may be performed using conventional techniques.
- the semiconductor device in the present invention is not particularly limited in its type, and is generally used for silicon devices such as M0 SFETs, bipolar transistors, BiCMOS transistors combining the two, thin film transistors (TFTs), diodes, solar cells, and the like. Applicable.
- an integrated circuit including the above devices, such as MISFET, may be used.
- MOSFET silicon layer force is formed?
- the crystal defect density and surface roughness is small, orientation is good, distortion much included
- carriers are less susceptible to scattering as they move through the channel, increasing their effective mobility and transconductance.
- the frit force noise the mobility fluctuation when mobile carriers are scattered by crystal defects in the silicon layer, and the silicon layer having a surface roughness and the gap formed on the silicon layer having the surface roughness. It is said that the mobile carrier undergoes the process of capture and desorption through the trap generated at the interface of the oxide film, and this reduces the crystal defects and surface roughness of the silicon layer. As a result, low fritz noise can be achieved.
- a gate oxide film constituting a MOSFET is formed by thermal oxidation of a silicon layer
- the thickness of the Si02 film after thermal oxidation is high. Unevenness or pinholes or holes in the film The inclusion of spots causes a decrease in dielectric strength.
- the SiO 2 film after thermal oxidation has few defects and has a remarkably high gate withstand voltage.
- M 0 Ri by the crystal defect density reduction of SFET force s silicon layer formed, even when a high voltage such as static electricity, because the path of the current through the defects is small, a high ESD as compared with the conventional Obtainable.
- the S 0 I structure which is the object of the present invention has a smaller MO compared with a bonded S 0 I substrate or a SI MOX substrate in which the silicon layer has an underlayer of S i 0 2.
- the snap-back withstand voltage of the SFET was high, the present invention reduced the crystal defects of the silicon layer, reduced the leakage current between the source and drain, and furthermore, during heating at high temperatures, Constituent element A 1, diffuses into the silicon layer and forms a hot carrier kill level near the interface, making it difficult for hot carriers to accumulate in the body, resulting in a higher snapback breakdown voltage Is obtained.
- integrated circuits composed of high-performance, high-reliability MOS SFETs on SOS substrates have extremely high operating speeds, low noise, high reliability, etc. under the same design rules. Excellent properties can be exhibited. It can be used for various applications, such as high-frequency components for mobile communications, satellite LSI, analog-to-digital conversion devices (ADC, DAC), optical transmission LSI, analog-digital hybrid LSI, etc. Device.
- ADC analog-to-digital conversion devices
- DAC analog-to-digital conversion devices
- optical transmission LSI analog-digital hybrid LSI, etc. Device.
- the R-plane sapphire substrate, L is a monosilane (S i H 4) gas as a starting material
- a first silicon layer having a thickness of 200 nm was deposited at a growth temperature of 950 ° C. by the PCVD method.
- a second silicon layer is deposited on the seed silicon layer at a growth temperature of 750 ° C. by a UH V_C VD method using disilane (Si 2 H 6 ) as a raw material.
- a 0 S substrate was prepared. When the total thickness of silicon was measured after growth, it was 200 nm.
- the substrate was added to an etching solution mixed at a ratio of I 2 (g) + KI (12 g) + methanol (40 cc) + H 20 (40 cc) + HF (3 cc). Soak for 5 seconds.
- the defect density was 3. 0 X 1 0 7 cells / c m @ 2.
- the surface flatness of the fabricated SOS substrate was measured using AFM (atomic force microscope). As a result, the value of R rms (surface roughness square mean) at 10 ⁇ m ⁇ 10 m was 1.5 nm.
- the orientation, crystallinity, and strain of the fabricated S0S film were also evaluated using an HR-XRD (high-resolution four-axis X-ray diffractometer) using the Cu K l line as the source. .
- the diffraction of the Si 1220! Plane grown parallel to the substrate surface was measured.
- the S i (0 0 1) plane grows on the sapphire R plane.
- a small amount of Si Phases with different orientations such as the! 220 ⁇ plane, also grow. Since these phases having different orientations are one of the causes of lowering the crystallinity of the film, it is preferable to reduce the phases as much as possible. Comparing the intensity ratio of these diffraction peaks in X-ray diffraction is a guide to determine the extent of phases with different orientations.
- the diffraction of the Si (400) plane grown perpendicular to the substrate surface was measured.
- the Bragg diffraction angle of the S i (400) plane is 69.392 degrees
- the lattice constant of S i in the direction perpendicular to the substrate surface calculated from this is 5.4 13 Becomes Therefore, the ratio of the lattice constants in the direction parallel to the substrate surface and the direction perpendicular to the substrate surface was 1.0500.
- FIG. 7 shows a cross-sectional view of the device.
- the left part of the figure is the NMOS part, and the right part is the PMOS.
- reference numeral 1 denotes a sapphire substrate.
- the silicon layer is heat-treated in an oxidizing atmosphere, a part of the surface side is oxidized, and the formed silicon oxide film is removed by etching to reduce the thickness to 110. Adjusted to nm.
- the silicon layer is oxidized to insulate and separate the NMOS and the PMOS, so that the oxide film 21 reaches the sapphire substrate.
- a region surrounded by a silicon oxide film is formed on the sapphire substrate, and NMOS and PMOS are formed there.
- 17 and 18 are gate oxide films formed on the Si layer by a thermal oxidation method
- 19 and 20 are polysilicon gate electrodes formed on the gate oxide film.
- Numerals 11 and 13 denote the source and drain regions of NMOS formed by arsenic ion implantation
- 14 and 16 denote the sources and drains of PMOS formed by boron fluoride ion implantation. This is the drain area.
- Reference numerals 12 and 15 denote channel portions of NMOS and PMOS, respectively.
- the device characteristics of the M ⁇ transistor thus fabricated were measured. As a result, the transconductance is 450 S and the snap-back breakdown voltage is 8 V at NM 0 S with a gate width of 50 ⁇ m, a gate length of 0.8 ⁇ m, and a threshold of 0.65 V. Was.
- noisy's characteristics of this transistor Input gate voltage spectrum Tsentralnyi Density one (S VG) in evaluated, Toko filtrate measurement frequency measured as 1 0 0 H z, SVG is 2 X 1 0 one 1 2 was V 2 / H z.
- the ESD of this transistor was determined to be 2500 V by a method based on the EIAJ ED-4701-1 test method C-1111 A electrostatic discharge test.
- the cutoff frequency was measured using a NMOS with a threshold of 0.25 V, a gate width of 101 ⁇ m, and an effective gate length of 0.7 ⁇ m. The number was measured and was 5.4 GHz.
- a constant current stress of 10 m AZ cm 2 was used using a gate capacitor with a thickness of 12 nm and a size of 100 m square.
- the breakdown charge (Q bd) was measured by adding, and was 1. O CZc m 2 .
- the R-plane sapphire substrate, a monosilane (S i H 4) gas Ri by the LP CVD method using a raw material at the growth temperature 9 5 0 ° C, to produce a SOS substrate having a thickness of 2 0 0 nm.
- NM ⁇ ⁇ ⁇ of the same size was used for each evaluation item.
- An S transistor and a capacitor were fabricated, and device characteristics were evaluated in the same way.
- the transconductance is 2 5 0 S, snapback breakdown voltage 6. 0 V, 3 ⁇ is 3 1 0- 10 2/112, ESD was 1 5 0 0 V.
- the cutoff frequency was 3.5 GHz.
- Qbd of the gate oxide film was 0.02 CZcm2.
- a monosilane (S i H 4) gas Ri by the LPCVD method to a raw material at the growth temperature 9 5 0 ° C, depositing a first silicon layer having a thickness of 2 0 0 nm did.
- a growth temperature of 750 was obtained by the UHV-CVD method using disilane (Si 2 H 6 ) as a raw material.
- disilane Si 2 H 6
- a second silicon layer was deposited on the seed silicon layer. The thickness of the silicon layer in this state was 200 nm.
- this was introduced into the oxidation furnace as described above, and at 1000 ° C., 180 liters of hydrogen (Zmin) and 180 liters of oxygen / min were introduced while introducing 300 liters of oxygen. min steam oxidation was performed. This was immersed in BHF to remove the oxide film on the silicon layer formed in the above step, and the film thickness of the remaining seed silicon layer was measured to be lOO nm.
- a third silicon layer is formed on the seed silicon layer at a growth temperature of 75 ° C. by a UHV-C VD method using disilane (Si 2 H 6 ) as a raw material.
- a con-layer was deposited to produce the desired S0s substrate. After the growth, the total thickness of the silicon was 200 nm.
- NMOS transistors and capacitors of the same size were manufactured for each evaluation item in the same manner as in Example 1, and the device characteristics were evaluated in the same manner.
- a monosilane (S i H 4) gas Ri by the LPCVD method to a raw material at the growth temperature 9 5 0 ° C, depositing a first silicon layer having a thickness of 2 0 0 nm did.
- the silicon layer was recrystallized by performing heat treatment for a long time.
- a second silicon layer is deposited on the seed silicon layer at a growth temperature of 750 ° C. by a UHV—C VD method using disilane (Si 2 H 6 ) as a raw material to form a desired SO 2.
- An S substrate was manufactured. When the total silicon film thickness was measured after growth, it was 200 nm.
- NMOs of the same size were used for each evaluation item. S transistors and capacitors were fabricated, and device characteristics were evaluated by the same method.
- the cutoff frequency was 5.8 GHz.
- the Qbd of the gate oxide film was 1.5 C / cm2.
- a monosilane (S i H 4) gas Ri by the LPCVD method to a raw material at the growth temperature 9 5 0 ° C, depositing a first silicon layer having a thickness of 2 0 0 nm did.
- a second silicon layer is deposited on the seed silicon layer at a growth temperature of 75 ° C. by a UHV—C VD method using disilane (Si 2 H 6 ) as a raw material, thereby forming a desired SO 0.
- An S substrate was manufactured. When the total thickness of silicon was measured after growth, it was 200 nm. When the defect density was measured by the same method as in Example 1, the result was 6.2 ⁇ 10 6 Z cm2. Similarly, when the Rrms was measured using AFM, it was 0.9 nm.
- NMOS transistor / capacitor having the same size for each evaluation item was manufactured in the same manner as in Example 1, and the device characteristics were evaluated in the same manner.
- transconductance 4 7 5 S snapback breakdown voltage 8. 2V
- SVG is 1. 2 X 1 0- 12 V 2 / H z
- ESD was 2 8 00 V.
- the cutoff frequency was 5.9 GHz.
- the Qbd of the gate oxide film was 1.7 C / cm2.
- a monosilane (S i H 4) gas Ri by the LPC VD method as a raw material, at a growth temperature 9 5 0 ° C, the first silicon layer having a thickness of 2 0 0 nm to Deposited.
- a second silicon layer was deposited on the seed silicon layer at a growth temperature of 75 ° C. by a UHV-C VD method using disilane (Si 2 H 6 ) as a raw material.
- the FWHM of the XRC on the Si (004) plane was 665 arc sec.
- the lattice constants in the direction parallel to the substrate surface and in the direction perpendicular to the substrate surface are 5.438 A and 5.435 A, respectively, and therefore, their ratio is 1. It was 0 0 0 5.
- NMOS transistor / capacitor having the same size for each evaluation item was manufactured in the same manner as in Example 1, and the device characteristics were evaluated in the same manner. evaluated.
- the transconductance was 480 S
- the snapback withstand voltage was 8.3 V
- the SVG was 1.0 X 1 O—V 2 / ! z
- the ESD was 280 V.
- the cutoff frequency was 6.0 GHz.
- the Qbd of the gate oxide film was 1.8 C / cm2.
- Al2 ⁇ 3 was deposited on a silicon (100) substrate at a substrate temperature of 880 ° C by UHV-C VD method using trimethylaluminum and oxygen as raw materials. Observation of the grown film by RHEED (reflection high-energy electron diffraction) and XRD confirmed that single crystal y—A12 ⁇ 3 had grown.
- the first silicon layer was deposited.
- a second silicon layer is deposited on the seed silicon layer by a UH V_C VD method using disilane (Si 2 H 6 ) at a growth temperature of 75 ° C. ⁇ An S substrate was manufactured.
- the mutual conductance was 4 0 0 S, snapback breakdown voltage 7. 5V, S VG is 5. 2 X 1 0- 12 V 2 / H z, ESD is 2 2 0 0 V.
- the cutoff frequency was 4.8 GHz.
- the Qbd of the gate oxide film was 0.5 C / cm2.
- transconductance 2 6 0 S snapback breakdown voltage 6. 2V
- SVG is 3. 1 X 1 0- 10 V 2 / H z
- ESD was 1 50 0 V.
- the cutoff frequency was 3.5 GHz.
- the Obd of the gate oxide film was 0.03 C / cm2.
- NMOS transistors and capacitors of the same size were manufactured for each evaluation item in the same manner as in Example 1, and device characteristics were evaluated in the same manner. evaluated.
- transconductance 3 5 0 S snapback breakdown voltage 7. 0V
- S VG is 1.
- ESD was 1 8 0 0 V.
- the cutoff frequency was 4.2 GHz.
- the Qbd of the gate oxide film was 0.1 lC / cm2.
- This silicon layer while maintaining the substrate temperature at 0 ° C, energy 1 9 O k e silicon ions of V 1 X 1 0 16 / c m2 implanted, after amorphous the interface with the sapphire, nitrogen Under a gas atmosphere, a heat treatment was performed at a temperature of 550 ° C. for 1 hour, and then at a temperature of 900 ° C. for 1 hour, to recrystallize the silicon layer.
- the seed silicon layer was grown in situ at a growth temperature of 750 ° C.
- a second silicon layer was deposited thereon to produce the desired SOS substrate.
- the total thickness of the silicon film after growth was measured to be 200 nm.
- NM ⁇ S transistors and capacitors of the same size were manufactured for each evaluation item in the same manner as in Example 1, and device characteristics were evaluated in the same manner.
- the transconductance was 500 S
- the snapback withstand voltage was 8.5 V
- the SVG was 1.0 X 10 — 12 ⁇ 2 ⁇ z
- the ESD was 3 00 V.
- the cutoff frequency was 6.5 GHz.
- the Qbd of the gate oxide film was 2.4 CZcm2.
- a second silicon layer is deposited on the seed silicon layer by a UHV-C VD method using disilane (Si 2 H 6 ) at a growth temperature of 750 ° C.
- a 0 S substrate was prepared. When the total thickness of silicon was measured after growth, it was 200 nm.
- NMO transistors / capacitors of the same size were produced for each evaluation item in the same manner as in Example 1, and the device characteristics were evaluated in the same manner.
- transconductance 4 3 0 S Sunatsupubakku withstand 7. 8V
- SVG is 3. 5 X 1 0- 12 V 2 ZH z
- ESD was 2 4 0 0 V.
- the cutoff frequency was 5.2 GHz.
- Qbd of the gate oxide film was 0.8 C / cm2.
- a monosilane (S i H 4) gas Ri by the LPCVD method to a raw material at the growth temperature 9 5 0 ° C, depositing a first silicon layer having a thickness of 2 0 0 nm did.
- a second silicon layer is deposited on the seed silicon layer at a growth temperature of 750 ° C. by a UH V_C VD method using disilane (Si 2 H 6 ) as a raw material to form a desired S 0.
- An S substrate was manufactured. When the total thickness of silicon was measured after growth, it was 200 nm.
- NMOS transistors and capacitors of the same size were manufactured for each evaluation item in the same manner as in Example 1, and the device characteristics were evaluated in the same manner.
- transconductance 4 3 0 S Sunatsupubakku withstand 7. 7 V
- S VG is 4. 0 X 1 0 - was 12 V 2 / H z
- ⁇ SD is 2 4 0 0 V.
- the cutoff frequency was 5.2 GHz.
- Qbd of the gate oxide film was 0.7 C / cm2.
- a monosilane (S i H 4) gas Ri by the LPC VD method as a raw material, at a growth temperature 9 5 0 ° C, the first silicon layer having a thickness of 2 0 0 nm to Deposited.
- a second silicon layer is deposited on the silicon layer at a growth temperature of 75 ° C. by a UHV-C VD method using disilane (Si 2 H 6 ) as a raw material.
- An S0S substrate was produced. When the total thickness of silicon was measured after growth, it was 200 nm.
- NMOS transistors and capacitors of the same size were manufactured for each evaluation item in the same manner as in Example 1, and the device characteristics were evaluated in the same manner.
- the mutual conductance was 4 5 0 S
- S VG is 2. 1 X 1 0- 12 V 2 ZH z
- ESD is 2 5 0 0 V.
- the cutoff frequency was 5.4 GHz.
- the Qbd of the gate oxide film was 1.2 C / cm2.
- a first silicon layer having a thickness of 200 nm was deposited on an R-plane sapphire substrate at a growth temperature of 950 ° C by LPCVD using monosilane (SiH 4 ) gas as a raw material. .
- a second silicon layer is deposited on the seed silicon layer by a UHV-C VD method using disilane (Si 2 H 6 ) as a raw material at a growth temperature of 75 ° C.
- An S substrate was manufactured.
- CMP chemical mechanical polishing
- NMOS transistors and capacitors of the same size were manufactured for each evaluation item in the same manner as in Example 1, and the device characteristics were evaluated in the same manner.
- a monosilane (S i H 4) gas Ri by the LPC VD method as a raw material, at a growth temperature 9 5 0 ° C, the first silicon layer having a thickness of 2 0 0 nm to Deposited.
- the thickness of the silicon layer is 100 nm.
- NMOS transistor / capacitor having the same size for each evaluation item was manufactured in the same manner as in Example 1, and the device characteristics were evaluated in the same manner.
- the transconductance was 420 ⁇ S
- the snapback withstand voltage was 7.7 V
- the SVG was 3.5 X 10 " 12 V 2 / Hz
- the ⁇ SD was 2400 V.
- the cutoff frequency was 5.2 GHz
- the Qbd of the gate oxide film was 0.7 C / cm2.
- a monosilane (S i H 4) gas Ri by the LPCVD method to a raw material at the growth temperature 9 5 0 ° C, depositing a first silicon layer having a thickness of 2 0 0 nm did.
- This silicon layer while maintaining the substrate temperature at 0 ° C, energy 1 9 0 k a e V Siri Kon'ion 1 X 1 0 16 / c m2 implanted, after amorphous the interface with the sapphire, nitrogen Under a gas atmosphere, heat treatment was performed at a temperature of 550 ° C. for 1 hour, and subsequently at a temperature of 900 ° C. for 1 hour, to recrystallize the silicon layer.
- NMOS transistor / capacitor having the same size for each evaluation item was manufactured in the same manner as in Example 1, and the device characteristics were evaluated in the same manner.
- the cutoff frequency was 5.3 GHz.
- the Qbd of the gate oxide film was 1.2 CZcm2.
- a first silicon layer with a thickness of 200 nm was deposited on an R-plane sapphire substrate at a growth temperature of 950 ° C by LPCVD using monosilane (SiH 4 ) gas as a raw material. .
- This silicon layer while maintaining the substrate temperature at 0 ° C, energy 1 9 O k a e V Siri Kon'ion 1 X 1 0 16 Zc m2 injected, after amorphous the interface with the sapphire, nitrogen gas Heat treatment was performed in an atmosphere at a temperature of 550 ° C. for 1 hour and subsequently at a temperature of 900 ° C. for 1 hour to recrystallize the silicon layer.
- NMOS transistor / capacitor having the same size for each evaluation item was manufactured in the same manner as in Example 1, and the device characteristics were evaluated in the same manner.
- transconductance 4 4 0 S snapback breakdown voltage 7. 9V
- S VG is 1. 5 X 1 0- 12 V 2 ZH z
- ESD was 2 5 0 0 V.
- the cutoff frequency was 5.3 GHz.
- Qbd of the gate oxide film was 1.4 C / cm2.
- the SOS substrate was manufactured by performing a heat treatment at 115 ° C. for 1 hour in a hydrogen gas atmosphere of 8 OTorr.
- NMOS transistors and capacitors of the same size were produced for each evaluation item in the same manner as in Example 1, and the device characteristics were evaluated in the same manner.
- transconductance 3 9 0 S snapback breakdown voltage 7. 7V
- SVG is 4. 5 X 1 0- 12 V 2 / H z
- ESD was 2 1 0 0 V.
- the cutoff frequency was 4.6 GHz. there were.
- the Qbd of the gate oxide film was 0.5 CZcm2.
- a S0S substrate having a silicon layer thickness of 200 nm was prepared in the same manner as in Example 14 except that the hydrogen pressure during the heat treatment in the hydrogen gas atmosphere was set to 76 OTorr. .
- NMOS transistors and capacitors of the same size were manufactured for each evaluation item in the same manner as in Example 1, and the device characteristics were evaluated in the same manner.
- transconductance 3 8 0 S Sunatsupubakku withstand 7. 7V
- S VG is 4. 4 X 1 0- 12 V 2 ZH z
- ESD was 2 1 0 0 V.
- the cutoff frequency was 4.5 GHz.
- the Qbd of the gate oxide film was 0.5 C / cm2.
- An S0S substrate having a silicon layer thickness of 200 nm was obtained in the same manner as in Example 14 except that the temperature during the heat treatment in the hydrogen gas atmosphere was set to 150 ° C. Was prepared.
- NMOS transistors and capacitors of the same size were manufactured for each evaluation item in the same manner as in Example 1, and the device characteristics were evaluated in the same manner.
- the transconductance was 375 ⁇ S
- the snapback withstand voltage was 7.7 V
- the SVG was 4.6 X 10 _ 12 V 2 / Hz
- the ESD was 2100 V.
- the cutoff frequency was 4.4 GHz.
- the Qbd of the gate oxide film was 0.5 CZcm2.
- An S0S substrate having a silicon layer thickness of 200 nm was produced in the same manner as in Example 14, except that the time for the heat treatment in the hydrogen gas atmosphere was set to 10 minutes.
- NMOS transistor / capacitor having the same size for each evaluation item was manufactured in the same manner as in Example 1, and the device characteristics were evaluated in the same manner.
- transconductance 3 7 5 S snapback breakdown voltage 7. 5V
- X 1 0- 12 V 2 ZH z, ESD was 2 1 0 0 V.
- the cutoff frequency was 4.4 GHz.
- the Qbd of the gate oxide film was 0.4 CZcm2.
- a 200 nm thick silicon layer was deposited at a growth temperature of 950 ° C by LPCVD using monosilane (SiH 4 ) gas as a raw material.
- a S0S substrate was manufactured by performing a heat treatment at 115 ° C. for 1 hour in a hydrogen gas atmosphere at a pressure of 80T0rr.
- NMOS transistor capacitors of the same size were manufactured for each evaluation item, and device characteristics were evaluated by the same method.
- the cutoff frequency was 5.2 GHz.
- the Qbd of the gate oxide film was 1.0 CZcm2.
- a S0I substrate was manufactured by performing a heat treatment at 115 ° C. for 1 hour in a hydrogen gas atmosphere at a pressure of 8 OTorr.
- NMOS transistor / capacitor having the same size for each evaluation item was manufactured in the same manner as in Example 1, and the device characteristics were evaluated in the same manner.
- transconductance 3 8 0 S snapback breakdown voltage 7. 5V
- SVG is 6.
- ESD was 2 1 0 0 V.
- the cutoff frequency was 4.5 GHz.
- Qbd of the gate oxide film was 0.5 C / cm2.
- a 100-nm-thick first silicon layer was deposited on an R-plane sapphire substrate at a growth temperature of 950 ° C by LPCVD using monosilane (SiH 4 ) gas as a raw material. . Therefore, the supply of monosilane gas was stopped once, the substrate temperature was raised to 150 ° C while the gas was kept in the growth chamber, and a hydrogen gas at a pressure of 8 OTorr was flown, followed by heat treatment for 1 hour. Next, monosilane gas is again supplied to the growth chamber, and a silicon layer having a substrate temperature of 700 ° C. and a thickness of 100 nm is further deposited on the silicon seed layer. A S0S substrate having a thickness of 200 nm was produced.
- NMOS transistors and capacitors of the same size were manufactured for each evaluation item in the same manner as in Example 1, and the device characteristics were evaluated in the same manner.
- the mutual conductance was 3 9 0 S, Sunatsupubakku withstand 7. 8V, S VG is 5. 0 X 1 0_ 12 V 2 ZH z, ESD is 2 3 00 V.
- the cutoff frequency was 4.6 GHz.
- the Qbd of the gate oxide film was 0.6 C / cm2.
- a monosilane (S i H 4) gas Ri by the LP CVD method using a raw material at the growth temperature 9 5 0 ° C, the first silicon layer having a thickness of 1 0 0 nm to Deposited.
- This silicon layer while maintaining the substrate temperature at 0 ° C, silicon ions of energy 1 5 0 ke V 5 X 1 0 15 / cm 2 injected, after amorphous the interface with the sapphire, nitrogen gas After heating for 1 hour at 550 ° C and then for 1 hour at 900 ° C in an atmosphere, the sample was heated at 1150 ° C in a hydrogen gas atmosphere at a pressure of 8 OTorr. Heat treatment was performed for a time.
- a monosilane gas is again supplied to the growth chamber, and a silicon layer having a thickness of 100 nm is further deposited on the silicon seed layer at a substrate temperature of 700 ° C. to form a silicon layer.
- a S0S substrate having a thickness of 200 nm was produced.
- NMOs of the same size S transistors and capacitors were fabricated, and device characteristics were evaluated by the same method.
- the cutoff frequency was 6.0 GHz.
- the Qbd of the gate oxide film was 2.0 C / cm2.
- a first silicon layer having a thickness of 200 nm was deposited on an R-plane sapphire substrate at a growth temperature of 950 ° C by LPCVD using monosilane (SiH 4 ) gas as a raw material. .
- This silicon layer while maintaining the substrate temperature at 0 ° C, Enerugi 1 9 0 k e silicon ions of V 1 X 1 0 16 / cm 2 injected, after amorphous the interface with the sapphire, nitrogen Heat treatment was performed in a gas atmosphere at a temperature of 550 ° C. for 1 hour, and subsequently at a temperature of 900 ° C. for 1 hour.
- NM ⁇ S transistors and capacitors of the same size were manufactured for each evaluation item in the same manner as in Example 1, and device characteristics were evaluated in the same manner.
- the mutual conductance was 4 2 0 S, Sunatsupubakku withstand 7. 8V, S VG is 3. 5 X 1 0- 12 V 2 ZH z, ESD is 2 5 00 V.
- the cutoff frequency was 5.2 GHz. there were.
- the Qbd of the gate oxide film was 1. O CZcm 2 .
- a single-crystal oxide substrate such as sapphire, or a silicon substrate and a single crystal substrate and a 03, ⁇ _A l 2 0 3 , Mg O 'A l 2 03, C e 0 2, S r T i 0 3, (Z r lx, Yx) ⁇ _Y, P b (Z r, T i) 0 3 , L i T a 0 3 , L i N b ⁇ 3 etc.
- a silicon layer with extremely few crystal defects and good surface flatness is placed on an insulating base such as an oxide layer or a laminated substrate composed of a crystalline fluoride layer such as CaF ⁇ . Can be formed. Therefore, on the S0I substrate according to the present invention, there are devices, such as improvement of frit noise, improvement of operation speed, improvement of withstand voltage of gate oxide film, improvement of ESD, etc., which are problems in the conventional SOS substrate. It is possible to fabricate devices with improved performance and reliability.
Description
Claims
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
KR19997012020A KR20010013993A (ko) | 1997-06-19 | 1998-06-19 | Soi 기판과 그 제조 방법, 및 반도체 디바이스와 그제조 방법 |
AU80368/98A AU8036898A (en) | 1997-06-19 | 1998-06-19 | Soi substrate and process for preparing the same, and semiconductor device and process for preparing the same |
EP98928598A EP1037272A4 (en) | 1997-06-19 | 1998-06-19 | SILICON ON ISOLATOR (SOI) SUBSTRATE AND SEMICONDUCTOR COMPONENT AND METHOD FOR THE PRODUCTION THEREOF |
CA002294306A CA2294306A1 (en) | 1997-06-19 | 1998-06-19 | Soi substrate and process for preparing the same, and semiconductor device and process for preparing the same |
Applications Claiming Priority (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP9/162313 | 1997-06-19 | ||
JP16231397 | 1997-06-19 | ||
JP9/216368 | 1997-08-11 | ||
JP21636897 | 1997-08-11 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO1998058408A1 true WO1998058408A1 (fr) | 1998-12-23 |
Family
ID=26488146
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/JP1998/002756 WO1998058408A1 (fr) | 1997-06-19 | 1998-06-19 | Substrat silicium sur isolant (soi) et procede d'elaboration, dispositif a semi-conducteurs et procede de fabrication |
Country Status (7)
Country | Link |
---|---|
US (1) | US6528387B1 (ja) |
EP (1) | EP1037272A4 (ja) |
KR (1) | KR20010013993A (ja) |
CN (1) | CN1260907A (ja) |
AU (1) | AU8036898A (ja) |
CA (1) | CA2294306A1 (ja) |
WO (1) | WO1998058408A1 (ja) |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6911367B2 (en) * | 2003-04-18 | 2005-06-28 | Micron Technology, Inc. | Methods of forming semiconductive materials having flattened surfaces; methods of forming isolation regions; and methods of forming elevated source/drain regions |
JP2006261191A (ja) * | 2005-03-15 | 2006-09-28 | Oki Electric Ind Co Ltd | 半導体装置の製造方法 |
US7888737B2 (en) | 2008-02-25 | 2011-02-15 | Elpida Memory, Inc. | Semiconductor device and method of manufacturing the same |
JP2013030773A (ja) * | 2011-07-28 | 2013-02-07 | Soytec | 単結晶の半導体層を支持基板上に転写する方法 |
Families Citing this family (38)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR20010079918A (ko) * | 1998-09-25 | 2001-08-22 | 야마모토 카즈모토 | 반도체 기판과 그 제조 방법, 및 그것을 이용한 반도체디바이스와 그 제조 방법 |
CN100432721C (zh) * | 2001-02-02 | 2008-11-12 | 英特尔公司 | 提供光学质量硅表面的方法 |
US6890450B2 (en) | 2001-02-02 | 2005-05-10 | Intel Corporation | Method of providing optical quality silicon surface |
TW480643B (en) * | 2001-03-20 | 2002-03-21 | Mosel Vitelic Inc | Method for detecting metal on silicon chip by implantation of arsenic ions |
US6765232B2 (en) * | 2001-03-27 | 2004-07-20 | Ricoh Company, Ltd. | Semiconductor light-emitting device, surface-emission laser diode, and production apparatus thereof, production method, optical module and optical telecommunication system |
FR2827078B1 (fr) * | 2001-07-04 | 2005-02-04 | Soitec Silicon On Insulator | Procede de diminution de rugosite de surface |
US6693298B2 (en) * | 2001-07-20 | 2004-02-17 | Motorola, Inc. | Structure and method for fabricating epitaxial semiconductor on insulator (SOI) structures and devices utilizing the formation of a compliant substrate for materials used to form same |
US6728093B2 (en) * | 2002-07-03 | 2004-04-27 | Ramtron International Corporation | Method for producing crystallographically textured electrodes for textured PZT capacitors |
KR100504163B1 (ko) * | 2002-09-12 | 2005-07-27 | 주성엔지니어링(주) | Soi 기판 및 그 제조방법 |
JP2004152962A (ja) * | 2002-10-30 | 2004-05-27 | Oki Electric Ind Co Ltd | 半導体装置の製造方法 |
TW575926B (en) * | 2002-11-28 | 2004-02-11 | Au Optronics Corp | Method of forming polysilicon layer and manufacturing method of polysilicon thin film transistor using the same |
US6927169B2 (en) * | 2002-12-19 | 2005-08-09 | Applied Materials Inc. | Method and apparatus to improve thickness uniformity of surfaces for integrated device manufacturing |
US6916744B2 (en) * | 2002-12-19 | 2005-07-12 | Applied Materials, Inc. | Method and apparatus for planarization of a material by growing a sacrificial film with customized thickness profile |
KR100835832B1 (ko) * | 2002-12-30 | 2008-06-05 | 동부일렉트로닉스 주식회사 | 반도체 소자의 웰 형성방법 |
CN100345247C (zh) * | 2003-08-28 | 2007-10-24 | 中国科学院半导体研究所 | 一种氢致解耦合的异质外延用柔性衬底 |
US6825102B1 (en) * | 2003-09-18 | 2004-11-30 | International Business Machines Corporation | Method of improving the quality of defective semiconductor material |
US6972236B2 (en) * | 2004-01-30 | 2005-12-06 | Chartered Semiconductor Manufacturing Ltd. | Semiconductor device layout and channeling implant process |
US7157367B2 (en) * | 2004-06-04 | 2007-01-02 | Taiwan Semiconductor Manufacturing Co., Ltd. | Device structure having enhanced surface adhesion and failure mode analysis |
US7402465B2 (en) * | 2004-11-11 | 2008-07-22 | Samsung Electronics Co., Ltd. | Method of fabricating single-crystal silicon film and method of fabricating TFT adopting the same |
TWI242828B (en) * | 2004-12-20 | 2005-11-01 | Powerchip Semiconductor Corp | Inspection method for an semiconductor device |
US7011980B1 (en) * | 2005-05-09 | 2006-03-14 | International Business Machines Corporation | Method and structures for measuring gate tunneling leakage parameters of field effect transistors |
US7465590B1 (en) | 2005-06-30 | 2008-12-16 | Nanometrics Incorporated | Measurement of a sample using multiple models |
ES2274727B2 (es) * | 2005-11-10 | 2007-11-16 | Universidad Politecnica De Madrid | Metodo para reducir el exceso de ruido en dispositivos electronicos y en circuitos integrados monoliticos. |
FR2914110B1 (fr) * | 2007-03-20 | 2009-06-05 | Soitec Silicon On Insulator | Procede de fabrication d'un substrat hybride |
FR2907965B1 (fr) * | 2006-10-27 | 2009-03-06 | Soitec Silicon On Insulator | Procede de traitement d'un substrat donneur pour la fabrication d'un substrat. |
US7528056B2 (en) * | 2007-01-12 | 2009-05-05 | International Business Machines Corporation | Low-cost strained SOI substrate for high-performance CMOS technology |
KR101440930B1 (ko) * | 2007-04-20 | 2014-09-15 | 가부시키가이샤 한도오따이 에네루기 켄큐쇼 | Soi 기판의 제작방법 |
KR101436116B1 (ko) * | 2007-04-27 | 2014-09-01 | 가부시키가이샤 한도오따이 에네루기 켄큐쇼 | Soi 기판 및 그 제조 방법, 및 반도체 장치 |
WO2009035063A1 (en) * | 2007-09-14 | 2009-03-19 | Semiconductor Energy Laboratory Co., Ltd. | Semiconductor device and electronic appliance |
DE102008013325B4 (de) * | 2008-03-10 | 2011-12-01 | Siltronic Ag | Halbleiterscheibe aus einkristallinem Silicium und Verfahren zu deren Herstellung |
US9835570B2 (en) * | 2013-09-13 | 2017-12-05 | The United States Of America As Represented By The Administrator Of Nasa | X-ray diffraction (XRD) characterization methods for sigma=3 twin defects in cubic semiconductor (100) wafers |
CN104103601A (zh) * | 2014-07-08 | 2014-10-15 | 厦门润晶光电有限公司 | 一种蓝宝石绝缘层上覆硅衬底及其制备方法 |
CN104576504A (zh) * | 2014-12-24 | 2015-04-29 | 合肥协知行信息系统工程有限公司 | 一种soi晶片的制作工艺 |
CN105321806A (zh) * | 2015-08-21 | 2016-02-10 | 济南晶正电子科技有限公司 | 复合单晶薄膜和制造复合单晶薄膜的方法 |
JP6834932B2 (ja) * | 2017-12-19 | 2021-02-24 | 株式会社Sumco | 貼り合わせウェーハ用の支持基板の製造方法および貼り合わせウェーハの製造方法 |
CN108336084B (zh) * | 2018-02-28 | 2020-11-24 | 电子科技大学 | 高压隔离层及其制备方法和应用 |
JP2019151922A (ja) * | 2018-02-28 | 2019-09-12 | 株式会社Flosfia | 積層体および半導体装置 |
FR3079345B1 (fr) * | 2018-03-26 | 2020-02-21 | Soitec | Procede de fabrication d'un substrat pour dispositif radiofrequence |
Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5180160A (en) * | 1975-01-09 | 1976-07-13 | Kogyo Gijutsuin | Ishitsukibanjoheno handotaisokeiseihoho |
JPS56142626A (en) * | 1980-04-09 | 1981-11-07 | Toshiba Corp | Manufacture of semiconductor single crystal film |
JPS5828855A (ja) * | 1981-07-27 | 1983-02-19 | Nec Corp | 半導体基板の熱処理方法 |
JPS5982744A (ja) * | 1982-11-02 | 1984-05-12 | Nec Corp | Sos基板の製造法 |
JPH0964016A (ja) * | 1995-08-28 | 1997-03-07 | Nec Corp | 半導体装置の製造方法 |
Family Cites Families (16)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4177084A (en) | 1978-06-09 | 1979-12-04 | Hewlett-Packard Company | Method for producing a low defect layer of silicon-on-sapphire wafer |
JPS55146936A (en) * | 1979-05-04 | 1980-11-15 | Chiyou Lsi Gijutsu Kenkyu Kumiai | Treatment of semiconductor film |
JPS5822359U (ja) | 1981-08-07 | 1983-02-12 | 日本精工株式会社 | 調節可能なシ−トベルト用アンカ−装置 |
US4509990A (en) * | 1982-11-15 | 1985-04-09 | Hughes Aircraft Company | Solid phase epitaxy and regrowth process with controlled defect density profiling for heteroepitaxial semiconductor on insulator composite substrates |
US4588447A (en) * | 1984-06-25 | 1986-05-13 | Rockwell International Corporation | Method of eliminating p-type electrical activity and increasing channel mobility of Si-implanted and recrystallized SOS films |
JPS62176145A (ja) * | 1986-01-29 | 1987-08-01 | Sharp Corp | 半導体用基板の製造方法 |
JPS6411316A (en) * | 1987-07-03 | 1989-01-13 | Sanyo Electric Co | Formation of soi structure |
JPS6436046A (en) * | 1987-07-31 | 1989-02-07 | Seiko Epson Corp | Manufacture of semiconductor device |
JPH01261300A (ja) | 1988-04-12 | 1989-10-18 | Touyoko Kagaku Kk | 減圧気相成長法によるSi基板上へのAl↓2O↓3単結晶膜のヘテロエピタキシャル成長方法 |
TW211621B (ja) * | 1991-07-31 | 1993-08-21 | Canon Kk | |
DE69334324D1 (de) * | 1992-01-30 | 2010-05-06 | Canon Kk | Herstellungsverfahren für Halbleitersubstrat |
JP2994837B2 (ja) | 1992-01-31 | 1999-12-27 | キヤノン株式会社 | 半導体基板の平坦化方法、半導体基板の作製方法、及び半導体基板 |
US5300443A (en) * | 1993-06-30 | 1994-04-05 | The United States Of America As Represented By The Secretary Of The Navy | Method for fabricating complementary enhancement and depletion mode field effect transistors on a single substrate |
US5416043A (en) * | 1993-07-12 | 1995-05-16 | Peregrine Semiconductor Corporation | Minimum charge FET fabricated on an ultrathin silicon on sapphire wafer |
JP3036619B2 (ja) * | 1994-03-23 | 2000-04-24 | コマツ電子金属株式会社 | Soi基板の製造方法およびsoi基板 |
US5989981A (en) * | 1996-07-05 | 1999-11-23 | Nippon Telegraph And Telephone Corporation | Method of manufacturing SOI substrate |
-
1998
- 1998-06-19 EP EP98928598A patent/EP1037272A4/en not_active Withdrawn
- 1998-06-19 CN CN98806334A patent/CN1260907A/zh active Pending
- 1998-06-19 CA CA002294306A patent/CA2294306A1/en not_active Abandoned
- 1998-06-19 KR KR19997012020A patent/KR20010013993A/ko not_active Application Discontinuation
- 1998-06-19 AU AU80368/98A patent/AU8036898A/en not_active Abandoned
- 1998-06-19 WO PCT/JP1998/002756 patent/WO1998058408A1/ja not_active Application Discontinuation
-
1999
- 1999-12-20 US US09/446,306 patent/US6528387B1/en not_active Expired - Fee Related
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5180160A (en) * | 1975-01-09 | 1976-07-13 | Kogyo Gijutsuin | Ishitsukibanjoheno handotaisokeiseihoho |
JPS56142626A (en) * | 1980-04-09 | 1981-11-07 | Toshiba Corp | Manufacture of semiconductor single crystal film |
JPS5828855A (ja) * | 1981-07-27 | 1983-02-19 | Nec Corp | 半導体基板の熱処理方法 |
JPS5982744A (ja) * | 1982-11-02 | 1984-05-12 | Nec Corp | Sos基板の製造法 |
JPH0964016A (ja) * | 1995-08-28 | 1997-03-07 | Nec Corp | 半導体装置の製造方法 |
Non-Patent Citations (2)
Title |
---|
SANGYO TOSHO K K: "TECHNIQUES FOR SOI STRUCTURE FORMATION", TECHNIQUES FOR SOI STRUCTURE FORMATION, XX, XX, 23 October 1987 (1987-10-23), XX, pages 131 - 135, XP002917240 * |
See also references of EP1037272A4 * |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6911367B2 (en) * | 2003-04-18 | 2005-06-28 | Micron Technology, Inc. | Methods of forming semiconductive materials having flattened surfaces; methods of forming isolation regions; and methods of forming elevated source/drain regions |
JP2006261191A (ja) * | 2005-03-15 | 2006-09-28 | Oki Electric Ind Co Ltd | 半導体装置の製造方法 |
US7888737B2 (en) | 2008-02-25 | 2011-02-15 | Elpida Memory, Inc. | Semiconductor device and method of manufacturing the same |
JP2013030773A (ja) * | 2011-07-28 | 2013-02-07 | Soytec | 単結晶の半導体層を支持基板上に転写する方法 |
Also Published As
Publication number | Publication date |
---|---|
EP1037272A1 (en) | 2000-09-20 |
AU8036898A (en) | 1999-01-04 |
KR20010013993A (ko) | 2001-02-26 |
CN1260907A (zh) | 2000-07-19 |
EP1037272A4 (en) | 2004-07-28 |
US6528387B1 (en) | 2003-03-04 |
CA2294306A1 (en) | 1998-12-23 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
WO1998058408A1 (fr) | Substrat silicium sur isolant (soi) et procede d'elaboration, dispositif a semi-conducteurs et procede de fabrication | |
US6768175B1 (en) | Semiconductor substrate and its production method, semiconductor device comprising the same and its production method | |
JP5122130B2 (ja) | 格子整合されなかった基板上に応力緩和層構造を形成する方法 | |
TWI293478B (en) | Manufacturing method for semiconductor substrate and manufacturing method for semiconductor device | |
US6562703B1 (en) | Molecular hydrogen implantation method for forming a relaxed silicon germanium layer with high germanium content | |
KR100516339B1 (ko) | 반도체 장치 및 그 제조 공정 | |
KR100934037B1 (ko) | 반도체 헤테로구조물 제조방법 | |
JP4386333B2 (ja) | 半導体基板の製造方法 | |
KR100783984B1 (ko) | 변형 Si-SOI 기판의 제조 방법 및 이 방법에 의해제조된 변형 Si-SOI 기판 | |
KR100934039B1 (ko) | 반도체 헤테로구조 | |
JP2004507084A (ja) | グレーデッドエピタキシャル成長を用いた半導体品の製造プロセス | |
US20060088979A1 (en) | Semiconductor structure for providing strained crystalline layer on insulator and method for fabricating same | |
JPS6388841A (ja) | シリコン・オン・インシュレータ半導体素子 | |
JP2006524426A (ja) | 基板上に歪層を製造する方法と層構造 | |
US20060006412A1 (en) | Semiconductor substrate, method of manufacturing the same and semiconductor device | |
JP2006522469A5 (ja) | ||
KR20070059157A (ko) | 반도체 웨이퍼의 제조방법 | |
WO2002043153A1 (fr) | Procede de fabrication de plaquette de semi-conducteur | |
US7416957B2 (en) | Method for forming a strained Si-channel in a MOSFET structure | |
JP3901957B2 (ja) | 半導体基板の製造方法及びその方法により製造された半導体装置 | |
KR101129513B1 (ko) | 실리콘적층 사파이어 박막의 제조방법 | |
JP2003234289A (ja) | 歪み緩和膜の製造方法、および、歪み緩和膜を有する積層体 | |
JPH05299345A (ja) | 電子素子用基板及びその製造方法 | |
KR100972605B1 (ko) | 실리콘적층 사파이어 박막의 제조방법 및 이에 의하여제조된 실리콘적층 사파이어 박막 | |
KR100768507B1 (ko) | 반도체 기판 및 이의 제조 방법 |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
WWE | Wipo information: entry into national phase |
Ref document number: 98806334.4 Country of ref document: CN |
|
AK | Designated states |
Kind code of ref document: A1 Designated state(s): AL AM AT AU AZ BA BB BG BR BY CA CH CN CU CZ DE DK EE ES FI GB GE GH GM GW HU ID IL IS JP KE KG KR KZ LC LK LR LS LT LU LV MD MG MK MN MW MX NO NZ PL PT RO RU SD SE SG SI SK SL TJ TM TR TT UA UG US UZ VN YU ZW |
|
AL | Designated countries for regional patents |
Kind code of ref document: A1 Designated state(s): GH GM KE LS MW SD SZ UG ZW AM AZ BY KG KZ MD RU TJ TM AT BE CH CY DE DK ES FI FR GB GR IE IT LU MC NL PT SE BF BJ CF CG CI CM GA GN ML MR NE SN TD TG |
|
DFPE | Request for preliminary examination filed prior to expiration of 19th month from priority date (pct application filed before 20040101) | ||
121 | Ep: the epo has been informed by wipo that ep was designated in this application | ||
ENP | Entry into the national phase |
Ref document number: 2294306 Country of ref document: CA Ref document number: 2294306 Country of ref document: CA Kind code of ref document: A |
|
WWE | Wipo information: entry into national phase |
Ref document number: 1019997012020 Country of ref document: KR Ref document number: 1998928598 Country of ref document: EP |
|
WWE | Wipo information: entry into national phase |
Ref document number: 09446306 Country of ref document: US |
|
REG | Reference to national code |
Ref country code: DE Ref legal event code: 8642 |
|
WWP | Wipo information: published in national office |
Ref document number: 1998928598 Country of ref document: EP |
|
WWP | Wipo information: published in national office |
Ref document number: 1019997012020 Country of ref document: KR |
|
WWR | Wipo information: refused in national office |
Ref document number: 1019997012020 Country of ref document: KR |