WO2022044562A1 - エピタキシャルシリコンウェーハ及びその製造方法、並びに半導体デバイスの製造方法 - Google Patents
エピタキシャルシリコンウェーハ及びその製造方法、並びに半導体デバイスの製造方法 Download PDFInfo
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- WO2022044562A1 WO2022044562A1 PCT/JP2021/025864 JP2021025864W WO2022044562A1 WO 2022044562 A1 WO2022044562 A1 WO 2022044562A1 JP 2021025864 W JP2021025864 W JP 2021025864W WO 2022044562 A1 WO2022044562 A1 WO 2022044562A1
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- silicon wafer
- epitaxial
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- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 title claims abstract description 170
- 229910052710 silicon Inorganic materials 0.000 title claims abstract description 169
- 239000010703 silicon Substances 0.000 title claims abstract description 168
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 41
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- 150000002500 ions Chemical class 0.000 claims abstract description 167
- 239000010410 layer Substances 0.000 claims abstract description 155
- 239000002344 surface layer Substances 0.000 claims abstract description 20
- 238000010884 ion-beam technique Methods 0.000 claims abstract description 15
- 239000000470 constituent Substances 0.000 claims abstract description 12
- 229910052799 carbon Inorganic materials 0.000 claims description 127
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 125
- 235000012431 wafers Nutrition 0.000 claims description 123
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- 238000000034 method Methods 0.000 claims description 55
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- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 claims description 32
- 238000003917 TEM image Methods 0.000 claims description 15
- 230000008569 process Effects 0.000 claims description 14
- 239000007789 gas Substances 0.000 claims description 13
- 239000002994 raw material Substances 0.000 claims description 10
- UCXUKTLCVSGCNR-UHFFFAOYSA-N diethylsilane Chemical group CC[SiH2]CC UCXUKTLCVSGCNR-UHFFFAOYSA-N 0.000 claims description 8
- 238000011156 evaluation Methods 0.000 claims description 8
- 230000001678 irradiating effect Effects 0.000 claims description 5
- 229910004469 SiHx Inorganic materials 0.000 abstract 2
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- 230000000052 comparative effect Effects 0.000 description 43
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- 206010027146 Melanoderma Diseases 0.000 description 5
- 229910003923 SiC 4 Inorganic materials 0.000 description 5
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- 229910021421 monocrystalline silicon Inorganic materials 0.000 description 4
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- XKRFYHLGVUSROY-UHFFFAOYSA-N Argon Chemical compound [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 description 2
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- 229910052698 phosphorus Inorganic materials 0.000 description 2
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- 238000004151 rapid thermal annealing Methods 0.000 description 2
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- IHCDKJZZFOUARO-UHFFFAOYSA-M sulfacetamide sodium Chemical compound O.[Na+].CC(=O)[N-]S(=O)(=O)C1=CC=C(N)C=C1 IHCDKJZZFOUARO-UHFFFAOYSA-M 0.000 description 2
- ZDHXKXAHOVTTAH-UHFFFAOYSA-N trichlorosilane Chemical compound Cl[SiH](Cl)Cl ZDHXKXAHOVTTAH-UHFFFAOYSA-N 0.000 description 2
- 239000005052 trichlorosilane Substances 0.000 description 2
- MFGTZDMAYACKNE-UHFFFAOYSA-N CCCC[SiH2]C Chemical compound CCCC[SiH2]C MFGTZDMAYACKNE-UHFFFAOYSA-N 0.000 description 1
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 description 1
- XDTMQSROBMDMFD-UHFFFAOYSA-N Cyclohexane Chemical compound C1CCCCC1 XDTMQSROBMDMFD-UHFFFAOYSA-N 0.000 description 1
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- 229910052786 argon Inorganic materials 0.000 description 1
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- YXMVRBZGTJFMLH-UHFFFAOYSA-N butylsilane Chemical compound CCCC[SiH3] YXMVRBZGTJFMLH-UHFFFAOYSA-N 0.000 description 1
- 150000001721 carbon Chemical class 0.000 description 1
- 229910002091 carbon monoxide Inorganic materials 0.000 description 1
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- MROCJMGDEKINLD-UHFFFAOYSA-N dichlorosilane Chemical compound Cl[SiH2]Cl MROCJMGDEKINLD-UHFFFAOYSA-N 0.000 description 1
- 230000005684 electric field Effects 0.000 description 1
- 230000003028 elevating effect Effects 0.000 description 1
- KVLLCNQAWSMSOQ-UHFFFAOYSA-N ethyl(propyl)silane Chemical compound CCC[SiH2]CC KVLLCNQAWSMSOQ-UHFFFAOYSA-N 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
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- ONUDQGKJYPMMMB-UHFFFAOYSA-N methyl(propyl)silicon Chemical compound CCC[Si]C ONUDQGKJYPMMMB-UHFFFAOYSA-N 0.000 description 1
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- 229910052757 nitrogen Inorganic materials 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- LXQCYGJKOIEWBN-UHFFFAOYSA-N pentylsilane Chemical compound CCCCC[SiH3] LXQCYGJKOIEWBN-UHFFFAOYSA-N 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
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- H01L21/18—Manufacture or treatment of semiconductor devices or of parts thereof the devices having potential barriers, e.g. a PN junction, depletion layer or carrier concentration layer the devices having semiconductor bodies comprising elements of Group IV of the Periodic Table or AIIIBV compounds with or without impurities, e.g. doping materials
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- H01L21/3221—Treatment of semiconductor bodies using processes or apparatus not provided for in groups H01L21/20 - H01L21/26 to modify their internal properties, e.g. to produce internal imperfections of silicon bodies, e.g. for gettering
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- C30B25/00—Single-crystal growth by chemical reaction of reactive gases, e.g. chemical vapour-deposition growth
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Definitions
- the present invention relates to an epitaxial silicon wafer, a method for manufacturing the same, and a method for manufacturing a semiconductor device.
- the epitaxial silicon wafer in which the epitaxial layer of single crystal silicon is formed on the silicon wafer is MOSFET (Metal-Oxide-Semiconductor Field-Effect Transistor), DRAM (Dynamic Random Access Memory), power transistor and BSI (Back Side Illumination) type. It is used as a device substrate for manufacturing various semiconductor devices such as CIS (CMOS Image Sensor).
- MOSFET Metal-Oxide-Semiconductor Field-Effect Transistor
- DRAM Dynamic Random Access Memory
- BSI Back Side Illumination
- CIS CMOS Image Sensor
- the epitaxial layer is contaminated with heavy metals, the dark current of CIS increases, causing defects called white scratch defects, which causes deterioration of the characteristics of the semiconductor device. Therefore, in order to suppress such heavy metal contamination, there is a technique for forming a gettering site for capturing heavy metals in a silicon wafer.
- a method of injecting ions into a silicon wafer and then forming an epitaxial layer is known. In this method, the ion implantation region functions as a gettering site.
- Patent Document 1 and Patent Document 2 the surface of a silicon wafer is irradiated with cluster ions such as C3 H5 whose constituent elements are carbon and hydrogen , and the surface layer portion of the silicon wafer is exposed to the cluster ions.
- a method for manufacturing an epitaxial silicon wafer is described, which comprises a step of forming a modified layer in which constituent elements are solid-dissolved and a step of forming a silicon epitaxial layer on the modified layer of the silicon wafer.
- the modified layer formed by irradiating cluster ions whose constituent elements are carbon and hydrogen exhibits higher gettering ability than the ion implantation region obtained by implanting carbon monomer ions. Shows.
- Patent Document 2 as an improved technique of the technique described in Patent Document 1, cluster ions whose constituent elements are carbon and hydrogen are contained in a high dose amount so that a part of the modified layer in the thickness direction becomes an amorphous layer. It is described that the gettering ability of heavy metals can be improved by irradiating. Further, in Patent Document 2, when cluster ions are irradiated with such a high dose amount, minute black spot-like defects caused by injected carbon or the like are visually recognized in the cross-sectional TEM image of the modified layer after epitaxial growth. There is a discussion that black dot defects may contribute to the improvement of gettering ability.
- the present invention provides a method for manufacturing an epitaxial silicon wafer capable of suppressing the diffusion of carbon into the epitaxial layer during epitaxial growth and device formation process while ensuring gettering ability. The purpose.
- Another object of the present invention is to provide an epitaxial silicon wafer in which carbon diffusion into an epitaxial layer is suppressed during epitaxial growth and a device forming process while ensuring gettering ability.
- the present inventors have carried out diligent research and obtained the following findings. That is, when the cluster ion composed of carbon and hydrogen is irradiated with a low carbon dose amount, the diffusion of carbon into the epitaxial layer can be suppressed, but the gettering ability is insufficient. Therefore, the present inventors have conceived to irradiate cluster ions composed of constituent elements other than carbon at the same time as cluster ions composed of carbon and hydrogen in order to compensate for the gettering ability decreased by the amount of low carbon dose.
- ions of C 2 Hy ( y is one or more selected from integers of 2 to 5) and SiH x (x is selected from integers of 1 to 3) having a predetermined dose or more are selected. It has been found that sufficient gettering ability can be obtained even if the amount of carbon dose is reduced by simultaneously irradiating with one or more ions.
- the amount of carbon distributed in the silicon epitaxial layer and the modified layer is small because of the low carbon dose amount.
- an EOR defect having a maximum width of 50 to 250 nm was visually recognized in the cross-sectional TEM image of the modified layer. It is presumed that this is a defect caused by the injection of SiH x ions, unlike the black dot-like defect caused by the carbon injection.
- the modified layer is located near the interface with the epitaxial layer in the carbon concentration profile of SIMS in the depth direction of the modified layer. It was found that a steep peak appeared, and that a peak also appeared in the hydrogen concentration profile of SIMS in the depth direction of the modified layer.
- a method for manufacturing a semiconductor device comprising a step of forming a semiconductor device on the silicon epitaxial layer of the epitaxial silicon wafer according to the above [6].
- an epitaxial silicon wafer of the present invention it is possible to manufacture an epitaxial silicon wafer in which carbon diffusion to the epitaxial layer is suppressed during epitaxial growth and device formation process while ensuring gettering ability.
- the epitaxial silicon wafer of the present invention suppresses carbon diffusion into the epitaxial layer during epitaxial growth and device formation process while ensuring gettering ability.
- 6 is a graph (mass spectrum) showing mass fragments of various cluster ions obtained from diethylsilane (SiC 4H 12 ) as a raw material gas. It is a graph which shows the concentration profile of carbon and hydrogen by SIMS after ion implantation and before formation of an epitaxial layer in Invention Example 6.
- 6 is a graph showing the relationship between the total dose amount and the injected carbon amount obtained from Invention Examples 1 to 6 and Comparative Examples 1 and 2.
- 6 is a graph showing carbon concentration profiles by SIMS after forming an epitaxial layer in Invention Example 6 and Comparative Examples 1, 2 and 4.
- 6 is a graph showing hydrogen concentration profiles by SIMS after forming an epitaxial layer in Invention Example 6 and Comparative Examples 1 and 2.
- 6 is a cross-sectional TEM image (magnification: 200,000 times) of the modified layer in Invention Example 6 and Comparative Examples 1 and 2.
- 6 is a cross-sectional TEM image (magnification: 1 million times) of the modified layer in the sixth aspect of the invention.
- FIG. 1 exaggerates the thicknesses of the modified layer 14 and the silicon epitaxial layer 16 with respect to the silicon wafer 10, which is different from the actual thickness ratio.
- a SiH x (x is one or more selected from an integer of 1 to 3) is formed on the surface 10A of the silicon wafer 10.
- the first step (steps A and B in FIGS.
- the silicon epitaxial layer 16 is a device layer for manufacturing a semiconductor device such as a BSI type CIS.
- Examples of the silicon wafer 10 include a bulk single crystal silicon wafer having no epitaxial layer on the surface. Also, carbon and / or nitrogen may be added to the silicon wafer to obtain higher gettering capacity. Further, an arbitrary dopant may be added to the silicon wafer at a predetermined concentration to form a so-called n + type or p + type, or n ⁇ type or p ⁇ type substrate.
- an epitaxial silicon wafer in which a silicon epitaxial layer is formed on the surface of a bulk single crystal silicon wafer may be used.
- the silicon epitaxial layer can be formed under general conditions by the CVD method.
- the thickness of the epitaxial layer is preferably in the range of 0.1 to 10 ⁇ m, more preferably in the range of 0.2 to 5 ⁇ m.
- ions 12A of SiH x (x is one or more selected from an integer of 1 to 3) and C 2 Hy ( y is selected from an integer of 2 to 5). Irradiate a beam of cluster ion 12 containing ion 12B (of one or more).
- the "cluster ion" in the present specification is an atomic aggregate having various atomic numbers by colliding electrons with a gaseous molecule to dissociate the bond of the gaseous molecule by an electron impact method, and causing a fragment thereof.
- the "cluster ion" in the present specification is an ionized cluster in which a plurality of atoms are aggregated to give a positive charge or a negative charge, and is a single atom ion such as a carbon ion or carbon monoxide. It is clearly distinguished from single molecule ions such as ions.
- the number of constituent atoms of the cluster ion is usually about 5 to 100.
- CLARIS registered trademark
- the silicon on the surface layer of the silicon wafer 10 momentarily reaches about 1350 to 1400 ° C. with the irradiation energy. It becomes hot and melts. After that, the silicon is rapidly cooled, and carbon, hydrogen, and silicon derived from the cluster ion 12 are solid-solved in the surface layer portion of the silicon wafer.
- the “modified layer” in the present specification is a layer in which at least one of carbon, hydrogen, and silicon, which are constituent elements of the cluster ion to be irradiated, is solid-solved at the interstitial position or the substitution position of the crystal on the surface layer of the silicon wafer. Means.
- the "modified layer” is specified as a region in which the concentration of any element is detected higher than the background in the SIMS concentration profile of carbon and hydrogen in the depth direction of the silicon wafer.
- the surface layer portion of 500 nm or less from the surface of the silicon wafer becomes the modified layer.
- carbon diffuses from the surface of the silicon wafer to the inside, so that the surface layer portion about 2 to 4 ⁇ m from the surface of the silicon wafer (the interface between the epitaxial layer and the silicon wafer) becomes the modified layer. ..
- x is one or more selected from an integer of 1 to 3, i.e., SiH x ion 12A comprises one or more of SiH ions, SiH 2 ions, and SiH 3 ions.
- y is one or more selected from an integer of 2-5, i.e. the C 2 Hy ion 12B is a C 2 H 2 ion, a C 2 H 3 ion, a C 2 H 4 ion, and a C 2 H 5 Contains more than one type of ion.
- the epitaxial silicon wafer 100 obtained thereafter it is possible to suppress the diffusion of carbon into the epitaxial layer during the epitaxial growth and the device forming process while ensuring the gettering ability. Therefore, it is possible to suppress the formation of carbon-induced point defects in the device forming region of the epitaxial layer 16.
- the present inventors consider the mechanism for obtaining such an effect as follows. Since silicon atoms have a larger mass number than carbon atoms, irradiation with SiH x ions introduces large damage (injection defects) to the surface layer of the silicon wafer, which is thought to contribute to high gettering ability. .. That is, relatively large injection defects are formed in the modified layer 14 due to the injection of SiH x ions. Then, the injected carbon derived from the C 2 Hy ion is aggregated in this injection defect, and hydrogen is captured here, so that a region of a defect (EOR defect) capable of exhibiting high gettering ability is formed. It is presumed that it was formed.
- EOR defect a defect capable of exhibiting high gettering ability
- the gaseous molecule that is the raw material of the cluster ion is selected from the above-mentioned SiH x (x is one or more selected from an integer of 1 to 3) ion and C 2 Hy ( y is an integer of 2 to 5). It is not particularly limited as long as it can simultaneously generate one or more) ions, but for example, diethylsilane (SiC 4 H 12 ), butyl silane (SiC 4 H 12 ), and methyl propyl silane (SiC 4 H 12 ).
- cluster ions of various sizes can be generated from each of these raw material gases.
- C 2 H 2 ions and C 2 H 3 ions are used as C 2 Hy ions in the range of mass numbers 26 to 31.
- C 2 H 4 ion and C 2 H 5 ion are generated, and SiH ion, SiH 2 ion, and SiH 3 ion are generated as SiH x ion.
- this diethylsilane is optimal as the raw material gas used in this embodiment.
- a cluster ion beam of a desired ion species can be generated. For example, extracting a fragment having a mass number of 29 to 31 generates a cluster ion beam containing SiH 3 ion, SiH 2 ion and SiH ion as SiH x ion and C 2 H 5 ion as C 2 Hy ion. be able to.
- the total dose amount of cluster ions can be adjusted by controlling the ion irradiation time as a device setting value.
- the total dose amount is preferably set so that the dose amount of SiH x ion and the dose amount of C 2 Hy ion satisfy the following ranges.
- the dose amount of SiH x ions is 1.5 x 10 14 ions / cm 2 or more. This is because when the dose amount is less than 1.5 ⁇ 10 14 ions / cm 2 , the effect of the present invention by injecting SiH ⁇ ions cannot be sufficiently obtained. Further, from the viewpoint of obtaining the effect of the present invention more sufficiently, the dose amount is preferably 3.0 ⁇ 10 14 ions / cm 2 or more. On the other hand, if the dose amount is excessive, the damage to the silicon wafer due to ion implantation becomes excessive, and defects occur in the epitaxial layer after the epitaxial layer is formed. Therefore, the dose amount is 1.0 ⁇ 10 15 ions /. It is preferably cm 2 or less.
- the dose amount of C 2 Hy ions is preferably 1.0 ⁇ 10 14 ions / cm 2 or less.
- the dose amount is more preferably 5.0 ⁇ 10 13 ions / cm 2 or less.
- the dose amount is preferably 1.0 ⁇ 10 13 ions / cm 2 or more.
- the total dose amount can be grasped as a device set value.
- the dose amount of C 2 Hy ion and the dose amount of SiH x ion cannot be grasped individually, they are determined as follows. That is, for the silicon wafer after irradiation with cluster ions, the carbon concentration profile in the depth direction from the surface of the silicon wafer is measured by SIMS measurement, and the amount of carbon injected into the modified layer is obtained from the carbon concentration profile. Since the number of carbon atoms of the C 2 Hy ion is 2, the value obtained by dividing the injected carbon amount obtained above by 2 can be regarded as the “dose amount of the C 2 Hy ion”.
- the "doze amount of SiH x ions" can be obtained by subtracting the dose amount of C 2 Hy ions obtained as described above from the total dose amount.
- the ratio of the dose amount of C 2 Hy ions to the dose amount of SiH x ions in the total dose amount is the resolution of the mass separator for selecting ions in the ion implanter, the set value of the mass number of ions to be implanted, and the value. It can be controlled by conditions such as the amount of raw material gas introduced and the energy of electrons emitted during ionization, and as long as these conditions are not changed, cluster ions of the same ratio can be generated (Comparative Example 2 in FIG. 4). And Examples 1 to 3 and 5).
- the acceleration voltage of the cluster ion can be more than 0 keV / ion and less than 200 keV / ion, preferably 100 keV / ion or less, and more preferably 80 keV / ion or less.
- Two methods, (1) electrostatic acceleration and (2) high frequency acceleration are generally used for adjusting the acceleration voltage.
- As the former method there is a method in which a plurality of electrodes are arranged at equal intervals and an equal voltage is applied between them to create an equiaccelerating electric field in the axial direction.
- the latter method there is a linear linac method in which ions are accelerated by using a high frequency while running linearly.
- the beam current value of the cluster ion is not particularly limited, but can be appropriately determined from the range of, for example, 50 to 5000 ⁇ A.
- the beam current value of the cluster ions can be adjusted, for example, by changing the decomposition conditions of the raw material gas in the ion source.
- the silicon epitaxial layer 16 can be formed under general conditions. For example, hydrogen is used as a carrier gas, and a source gas such as dichlorosilane or trichlorosilane is introduced into the chamber.
- a source gas such as dichlorosilane or trichlorosilane is introduced into the chamber.
- the growth temperature varies depending on the source gas used, but silicon is siliconized at a temperature in the range of approximately 1000 to 1200 ° C. It can be epitaxially grown on the reformed layer 14 of the wafer 10.
- the thickness of the silicon epitaxial layer 16 is preferably in the range of 1 to 15 ⁇ m.
- the thickness of the silicon epitaxial layer 16 is preferably 4 ⁇ m or less. In this case, the effect of the present invention can be advantageously exerted.
- the silicon wafer 10 may be subjected to a recovery heat treatment for recovering crystallinity.
- the silicon wafer 10 may be held at a temperature of 900 ° C. or higher and 1100 ° C. or lower for 10 minutes or longer and 60 minutes or lower in an atmosphere such as nitrogen gas or argon gas.
- recovery heat treatment can also be performed using a rapid elevating temperature heat treatment device separate from the epitaxial device, such as RTA (Rapid Thermal Annealing) and RTO (Rapid Thermal Oxidation).
- the epitaxial silicon wafer 100 is obtained by the above manufacturing method, and is formed on the silicon wafer 10 and the surface layer portion of the silicon wafer 10, carbon and hydrogen. It has a modified layer 14 in which at least one of the above is solid-dissolved, and a silicon epitaxial layer 16 formed on the modified layer 14.
- the amount of carbon distributed in the silicon epitaxial layer 16 and the modified layer 14 is 2.0 ⁇ 10 14 atoms / cm 2 or less.
- the carbon content is more preferably 1.0 ⁇ 10 14 atoms / cm 2 or less.
- the carbon content is preferably 2.0 ⁇ 10 13 atoms / cm 2 or more. In the present invention, this "carbon content" is determined by measuring the carbon concentration profile (FIG.
- a gradual first present over the silicon epitaxial layer and the modified layer has a peak and a steep second peak that protrudes from the first peak and exists at a position near the interface with the epitaxial layer of the modified layer.
- the present embodiment has a carbon concentration profile having such a steep second peak, despite the small amount of injected carbon. As a result, sufficient gettering ability can be exhibited.
- the peak concentration of the steep second peak in the carbon concentration profile is preferably 2.0 ⁇ 10 17 atoms / cm 3 or more, more preferably 3.0 ⁇ 10 17 atoms / cm 3 or more, 1 It is preferably 0.0 ⁇ 10 18 atoms / cm 3 or less.
- the peak concentration is found in the modified layer (position near the interface with the epitaxial layer). There is a peak of 1.0 ⁇ 10 16 atoms / cm 3 or more. As described above, it is expected that the hydrogen remaining in the reformed layer diffuses into the epitaxial layer by the heat treatment during the device forming process for forming the semiconductor device in the epitaxial layer, and passesivates the defects in the epitaxial layer. In the present embodiment, the peak concentration of hydrogen is approximately 1.0 ⁇ 10 17 atoms / cm 3 or less.
- the "EOR (End of Range) defect” means that an atom extruded from a crystal lattice by an ion-implanted element (in the present invention, a silicon atom in a silicon wafer) is implanted by heat treatment. It is a general term for defects in the form of stacking defects in the ⁇ 111 ⁇ direction, transition loops, ⁇ 311 ⁇ defects, etc., which are formed by agglomeration at a position deeper than the peak position of the carbon concentration profile by SIMS.
- the "maximum width" of an EOR defect means the maximum width of each EOR defect in a TEM image, as shown in FIG.
- the density of EOR defects is approximately 1.0 ⁇ 10 15 pieces / cm 2 or less.
- the “cross-section TEM image” refers to an image in which the epitaxial silicon wafer 100 is cleaved in the thickness direction and the cleaved cross section of the modified layer is observed using TEM. Further, in the present invention, the "EOR defect density" is obtained as follows.
- the EOR defect is located at almost the same depth position (specifically, a position slightly deeper than the carbon concentration peak position detected by SIMS measurement). It occurs densely. Therefore, a TEM evaluation sample is cut out from around the depth position of the carbon concentration peak observed during SIMS measurement so as to include a region where an EOR defect occurs, and this evaluation sample is TEM-observed. Then, as shown in FIG. 7, the density calculation area (that is, the defect region) is set to a vertical (depth) of 300 nm so as to include an EOR defect, and a defect having a maximum width of 50 to 250 nm observed in the area is set.
- the density calculation area is a region of 300 nm in length ⁇ 3 ⁇ m in width, but the horizontal length is not particularly limited.
- the method for manufacturing a semiconductor device includes each step of the method for manufacturing the epitaxial silicon wafer 100 and a step of forming the semiconductor device on the silicon epitaxial layer 16. Further, the method for manufacturing a semiconductor device according to another embodiment of the present invention includes a step of forming the semiconductor device on the silicon epitaxial layer 16 of the epitaxial silicon wafer 100. According to these manufacturing methods, it is possible to suppress the formation of carbon-induced point defects in the device forming region of the epitaxial layer while ensuring the gettering ability.
- the semiconductor device formed on the silicon epitaxial layer 16 is not particularly limited, and examples thereof include MOSFETs, DRAMs, power transistors, back-illuminated solid-state image pickup devices, and the like.
- n-type silicon wafer (diameter: 300 mm, thickness: 775 ⁇ m, dopant type: phosphorus, resistivity: 10 ⁇ ⁇ cm) obtained from a CZ single crystal silicon ingot was prepared.
- FIG. 2 shows the mass spectrum of diethylsilane.
- Table 1 shows the ion species corresponding to the mass numbers 26 to 31 in the mass spectrum shown in FIG.
- the peak with a mass number of 31 corresponds to the SiH 3 ion.
- the lower peak with a mass number of 30 corresponds to the SiH 2 ion.
- the peak with a mass number of 29 corresponds to SiH ions and C2H5 ions.
- the peaks of mass number 28, mass number 27, and mass number 26 correspond to C 2 H 4 ions, C 2 H 3 ions, and C 2 H 2 ions, respectively.
- a cluster ion generator (CLARIS (registered trademark) manufactured by Nissin Ion Equipment Co., Ltd.) is used, and among various ion species corresponding to the mass spectrum shown in FIG. 2, the mass number is in the range of 29 to 31. Ion species were extracted to obtain a cluster ion beam, and the surface of the silicon wafer was irradiated with this cluster ion beam at an acceleration voltage of 80 keV / ion.
- This cluster ion beam mainly contains SiH 3 ions as SiH x ions, further contains a trace amount of SiH 2 ions and SiH ions, and further contains C 2 H 5 ions as C 2 Hy ions.
- the total dose amount of all ion species can be set. Therefore, in Invention Examples 1 to 6 and Comparative Examples 1 and 2, the total dose amount shown in Table 2 was used as the device setting value.
- the dose amount of C 2 H 5 ion and the dose amount of SiH x ion were determined as follows. First, for the silicon wafer after irradiation with cluster ions (before epitaxial growth), the carbon and hydrogen concentration profiles in the depth direction from the surface of the silicon wafer were measured by SIMS measurement. Representatively, the concentration profile in Invention Example 6 is shown in FIG. In FIG. 3, the hydrogen concentration profile is higher than the background in the range of about 150 nm from the surface of the silicon wafer, and the carbon concentration profile is higher than the background in the range of about 300 nm from the surface of the silicon wafer.
- Invention Example 6 the surface layer portion of the silicon wafer of about 300 nm was specified as the modified layer.
- the amount of carbon injected into the modified layer was determined by integrating the horizontal axis of this carbon concentration profile from 30 nm to 300 nm.
- the amount of injected carbon was determined in the same manner. The results are shown in Table 2.
- FIG. 4 shows the relationship between the total dose amount and the injected carbon amount obtained from Invention Examples 1 to 6 and Comparative Examples 1 and 2. As shown in FIG. 4, in Comparative Example 1 and Invention Example 6, the injected carbon amount is 10% of the total dose amount, and in Comparative Example 2 and Invention Examples 1 to 3 and 5, the injected carbon amount is the total dose amount. It was 7%, and in Invention Example 4, it was found that the injected carbon amount was 4% of the total dose amount.
- Comparative Examples 3 and 4 C3H5 cluster ions were generated and extracted using cyclohexane as a raw material gas, and the surface of the silicon wafer was irradiated with an acceleration voltage of 80 keV / ion.
- the dose amount of C 3 H 5 cluster ion is shown in the “Total dose amount” column of Table 2.
- the dose amount was set so that the injected carbon amount was the same as that of Invention Example 6, and in Comparative Example 4, the injected carbon amount was 10 times that of Invention Example 6.
- Comparative Examples 3 and 4 similarly to Invention Examples 1 to 6 and Comparative Examples 1 and 2, the carbon injection amount was obtained from the carbon concentration profile after irradiation with cluster ions and is shown in Table 2.
- the silicon wafer after irradiation with cluster ions is transferred into a single-wafer epitaxial growth apparatus (manufactured by Applied Materials Co., Ltd.), subjected to hydrogen baking treatment at a temperature of 1120 ° C. for 30 seconds, and then hydrogen is used as a carrier gas.
- a silicon epitaxial layer (thickness: 5 ⁇ m, dopant type: phosphorus, resistance: 10 ⁇ ⁇ cm) on the surface on the side where the modified layer of the silicon wafer was formed by the CVD method at 1120 ° C. ) was epitaxially grown to obtain an epitaxial silicon wafer.
- the carbon concentration is higher than the background in the range of about 2.5 ⁇ m of the surface layer portion of the silicon wafer (that is, about 2.5 ⁇ m from the interface of the silicon epitaxial layer / silicon wafer). It's getting higher.
- the hydrogen concentration is higher than the background in an extremely narrow range of about 0.3 ⁇ m on the surface layer portion of the silicon wafer. From this, in Invention Example 6, about 2.5 ⁇ m of the surface layer portion of the silicon wafer was specified as the modified layer.
- the range in which the carbon concentration is higher than the background is larger than that before the epitaxial growth because the injected carbon diffused from the surface of the silicon wafer in the depth direction due to the epitaxial growth. Further, from FIG. 5, it can be read that carbon is diffused to the epitaxial layer as the epitaxial growth occurs.
- the amount of carbon distributed in the silicon epitaxial layer and the modified layer is in the range where the carbon concentration is higher than the background under each condition (in the case of Invention Example 6, from 3.0 ⁇ m to 7.5 ⁇ m on the horizontal axis in FIG. 5). Is calculated as the integrated carbon amount, and is shown in the “Post-epi carbon amount” column of Table 2.
- Inventive Examples 1 to 5 also have the same carbon concentration profile and hydrogen concentration profile as inventive example 6, and Table 2 shows the peak concentration of the second peak, the amount of carbon after epi, and the presence or absence of a hydrogen peak. Indicated. For Comparative Example 3, Table 2 also shows the peak concentration of the second peak, the amount of carbon after the epi, and the presence or absence of the hydrogen peak.
- the surface of the epitaxial layer of the epitaxial silicon wafer is forcibly contaminated with a Ni contaminant solution by a spin coating contamination method, and then at 900 ° C. in a nitrogen gas atmosphere. It was heat-treated for 60 minutes. After that, SIMS measurement was performed for each epitaxial wafer, the Ni concentration profile in the depth direction of the wafer was measured, and the peak area was determined. It can be evaluated that the larger the peak area, the higher the gettering ability because more Ni can be captured. Therefore, the peak area is shown in Table 2 as the Ni capture amount. Further, the same test was carried out using the Cu contaminated liquid, and the Cu capture amount was obtained in the same manner, which is shown in Table 2.
- an epitaxial silicon wafer of the present invention it is possible to manufacture an epitaxial silicon wafer in which carbon diffusion to the epitaxial layer is suppressed during epitaxial growth and device formation process while ensuring gettering ability.
- silicon wafer 10 silicon wafer 10A surface of silicon wafer 12 cluster ion 12A SiH x ion 12BC 2 Hy ion 14 modified layer 16 silicon epitaxial layer
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Abstract
Description
[1]シリコンウェーハの表面に、SiHx(xは1~3の整数から選択される1つ以上)のイオンとC2Hy(yは2~5の整数から選択される1つ以上)のイオンとを含むクラスターイオンビームを照射して、前記シリコンウェーハの表層部に、前記クラスターイオンビームの構成元素が固溶した改質層を形成する工程と、
前記シリコンウェーハの改質層上にシリコンエピタキシャル層を形成する工程と、
を有し、前記SiHxイオンのドーズ量を1.5×1014ions/cm2以上とすることを特徴とするエピタキシャルシリコンウェーハの製造方法。
前記シリコンウェーハの表層部に形成された、炭素及び水素の少なくとも一方が固溶した改質層と、
前記改質層上に形成されたシリコンエピタキシャル層と、
を有し、
前記改質層の断面TEM画像による欠陥評価において、前記改質層には、最大幅が50~250nmのEOR欠陥が5.0×107個/cm2以上の密度で存在する欠陥領域が観察され、
前記シリコンエピタキシャル層及び前記改質層に分布する炭素の量が2.0×1014atoms/cm2以下であり、
前記改質層の深さ方向におけるSIMSの水素濃度プロファイルにおいて、ピーク濃度が1.0×1016atoms/cm3以上であることを特徴とするエピタキシャルシリコンウェーハ。
前記エピタキシャルシリコンウェーハの前記シリコンエピタキシャル層に半導体デバイスを形成する工程と、
を有する半導体デバイスの製造方法。
本発明の一実施形態によるエピタキシャルシリコンウェーハ100の製造方法は、図1に示すように、シリコンウェーハ10の表面10Aに、SiHx(xは1~3の整数から選択される1つ以上)のイオン12AとC2Hy(yは2~5の整数から選択される1つ以上)のイオン12Bとを含むクラスターイオン12のビームを照射して、当該シリコンウェーハ10の表層部に、前記クラスターイオンビームの構成元素が固溶した改質層14を形成する第1工程(図1ステップA,B)と、前記シリコンウェーハ10の改質層14上にシリコンエピタキシャル層16を形成する第2工程(図1ステップC)と、を有する。シリコンエピタキシャル層16は、BSI型のCIS等の半導体素子を製造するためのデバイス層となる。
シリコンウェーハ10としては、例えば、表面にエピタキシャル層を有しないバルクの単結晶シリコンウェーハが挙げられる。また、より高いゲッタリング能力を得るために、シリコンウェーハに炭素及び/又は窒素を添加してもよい。さらに、シリコンウェーハに任意のドーパントを所定濃度添加して、いわゆるn+型もしくはp+型、又は、n-型もしくはp-型の基板としてもよい。
シリコンエピタキシャル層16は、一般的な条件により形成することができる。例えば、水素をキャリアガスとして、ジクロロシラン、トリクロロシランなどのソースガスをチャンバー内に導入し、使用するソースガスによっても成長温度は異なるが、概ね1000~1200℃の範囲の温度でCVD法によりシリコンウェーハ10の改質層14上にエピタキシャル成長させることができる。シリコンエピタキシャル層16は、厚さを1~15μmの範囲内とすることが好ましい。厚さが1μm未満の場合、シリコンウェーハ10からのドーパントの外方拡散によりシリコンエピタキシャル層16の抵抗率が変化してしまう可能性があり、また、15μm超えの場合、CISの分光感度特性に影響が生じるおそれがあるためである。ただし、本実施形態では、シリコンエピタキシャル層16の厚さを4μm以下とすることが好ましい。この場合、本発明の効果を有利に発揮することができる。
図1を参照して、本発明の一実施形態によるエピタキシャルシリコンウェーハ100は、上記製造方法により得られるものであり、シリコンウェーハ10と、このシリコンウェーハ10の表層部に形成された、炭素及び水素の少なくとも一方が固溶した改質層14と、この改質層14上に形成されたシリコンエピタキシャル層16と、を有する。
エピタキシャルシリコンウェーハ100は、シリコンエピタキシャル層16及び改質層14に分布する炭素の量が2.0×1014atoms/cm2以下であることが重要である。これにより、注入炭素量を少なくすることができ、エピタキシャル成長中及びデバイス形成プロセス中にエピタキシャル層への炭素の拡散が抑制することができる。この観点から、当該炭素量は1.0×1014atoms/cm2以下とすることがより好ましい。他方で、十分なゲッタリング能力を確保する観点からは、当該炭素量は2.0×1013atoms/cm2以上とすることが好ましい。なお、本発明において、この「炭素量」は、エピタキシャルシリコンウェーハについて、SIMS測定によって、シリコンエピタキシャル層の表面から深さ方向に向かって炭素濃度プロファイル(図5)を測定し、当該プロファイルのエピタキシャル層表面から改質層の終端(シリコンウェーハにおいて炭素濃度プロファイルが平坦になる位置)までの炭素濃度がバックグラウンドよりも高くなる範囲を積分することによって、求めることができる。
エピタキシャルシリコンウェーハ100では、改質層の断面TEM画像による欠陥評価において、最大幅が50~250nmのEOR欠陥が5.0×107個/cm2以上の密度で存在する欠陥領域が観察される。これは、SiHxイオンの注入に起因する欠陥であると推測される。すなわち、この特徴を有することにより、注入炭素量が少ないにも関わらず、十分なゲッタリング能力を発揮することができる。なお、本発明において「EOR(End of Range)欠陥」とは、イオン注入された元素により結晶格子から押し出された原子(本発明では、シリコンウェーハ中のシリコン原子)が、熱処理によって注入飛程(SIMSによる炭素濃度プロファイルのピーク位置)より深い位置で凝集することで形成される、{111}方向の積層欠陥、転移ループ、{311}欠陥などの形態をした欠陥の総称である。EOR欠陥の「最大幅」とは、図8に示すように、TEM画像における各EOR欠陥の最大の幅を意味する。なお、炭素ドーズ量が多い場合には、注入炭素に起因する黒点状欠陥が注入飛程よりも浅い位置に形成されるところ、本発明では、注入する炭素量が少ないことから、断面TEM画像において、注入炭素に起因する黒点状欠陥は視認されない。また、本実施形態において、EOR欠陥の密度は概ね1.0×1015個/cm2以下となる。なお、本明細書において「断面TEM画像」とは、エピタキシャルシリコンウェーハ100を厚み方向に劈開し、改質層の劈開断面をTEMを用いて観察した画像をいう。また、本発明において「EOR欠陥密度」は、以下のようにして求める。図7の発明例6のTEM画像から明らかなように、本発明においてEOR欠陥はほぼ同じ深さ位置(具体的には、SIMS測定により検出される炭素濃度ピーク位置よりもわずかに深い位置)に密集して発生する。そこで、EOR欠陥が発生する領域を含むように、SIMS測定した際に観察される炭素濃度ピークの深さ位置周辺からTEM評価用サンプルを切り出し、この評価サンプルをTEM観察する。そして、図7に示すように、EOR欠陥を含むように、密度算出エリア(つまり、欠陥領域)を縦(深さ)300nmに設定し、当該エリア内で観察される最大幅50~250nmの欠陥数をカウントし、当該欠陥数を当該エリアの面積で除することによって、EOR欠陥密度(個/cm2)とする。なお、図7の例では、密度算出エリアは縦300nm×横3μmの領域としたが、横の長さは特に限定されない。
本発明の一実施形態による半導体デバイスの製造方法は、上記エピタキシャルシリコンウェーハ100の製造方法の各工程と、シリコンエピタキシャル層16に半導体デバイスを形成する工程と、を有する。また、本発明の他の実施形態による半導体デバイスの製造方法は、上記エピタキシャルシリコンウェーハ100のシリコンエピタキシャル層16に半導体デバイスを形成する工程を有する。これらの製造方法によれば、ゲッタリング能力を確保しつつ、エピタキシャル層のデバイス形成領域に炭素起因の点欠陥が形成されることを抑制できる。
CZ単結晶シリコンインゴットから得たn型シリコンウェーハ(直径:300mm、厚さ:775μm、ドーパント種類:リン、抵抗率:10Ω・cm)を用意した。
表2に示すように、クラスターイオン照射条件の異なる8つの実験(発明例1~6及び比較例1~4)を行った。
発明例1~6及び比較例1,2では、原料ガスとしてジエチルシラン(SiC4H12)を用いた。図2に、ジエチルシランのマススペクトルを示す。また、図2に示したマススペクトル中の質量数26~31に対応するイオン種を、表1に示す。質量数31のピークは、SiH3イオンに対応する。質量数30の低めのピークは、SiH2イオンに対応する。質量数29のピークは、SiHイオンとC2H5イオンに対応する。質量数28、質量数27、及び質量数26のピークは、それぞれC2H4イオン、C2H3イオン、及びC2H2イオンに対応する。本実施例では、クラスターイオン発生装置(日新イオン機器社製、CLARIS(登録商標))を用いて、図2に示すマススペクトルに対応する種々のイオン種のうち、質量数29~31の範囲のイオン種を抽出してクラスターイオンビームを得て、シリコンウェーハの表面に、このクラスターイオンビームを加速電圧80keV/ionで照射した。このクラスターイオンビームは、SiHxイオンとしては、主にSiH3イオンを含み、さらに微量のSiH2イオン及びSiHイオンを含み、さらに、C2Hyイオンとしては、C2H5イオンを含む。前記クラスターイオン発生装置では、全てのイオン種の総ドーズ量を設定できるので、発明例1~6及び比較例1,2では、表2に示す総ドーズ量を装置設定値とした。
比較例3,4では、原料ガスとしてシクロヘキサンを用いてC3H5クラスターイオンを生成及び抽出し、シリコンウェーハの表面に加速電圧80keV/ionで照射した。C3H5クラスターイオンのドーズ量は表2の「総ドーズ量」の欄に示した。比較例3では、注入炭素量が発明例6のそれと同じとなるように、比較例4では、注入炭素量が発明例6のそれの10倍となるようにドーズ量を設定した。比較例3,4においても、発明例1~6及び比較例1,2と同様に、クラスターイオン照射後の炭素濃度プロファイルから炭素注入量を求め、表2に示した。
次いで、クラスターイオン照射後のシリコンウェーハを枚葉式エピタキシャル成長装置(アプライドマテリアルズ社製)内に搬送し、装置内で1120℃の温度で30秒の水素ベーク処理を施した後、水素をキャリアガス、トリクロロシランをソースガスとして、1120℃でCVD法により、シリコンウェーハの改質層が形成された側の表面上にシリコンエピタキシャル層(厚さ:5μm、ドーパント種類:リン、抵抗率:10Ω・cm)をエピタキシャル成長させて、エピタキシャルシリコンウェーハを得た。
発明例1~6及び比較例1~4のエピタキシャルシリコンウェーハについて、SIMS測定によって、シリコンエピタキシャル層の表面から深さ方向における炭素及び水素の濃度プロファイルを測定した。そのうち、発明例6及び比較例1,2,4における炭素濃度プロファイルを図5に示し、発明例4及び比較例1,2における水素濃度プロファイルを図6に示す。
発明例1~6及び比較例1~4のエピタキシャルウェーハの改質層(エピタキシャル層との界面近傍)の断面をTEM観察し、代表して、発明例6及び比較例1,2において得られたTEM画像を図7に示し、発明例6における図7とは別視野のTEM画像を図8に示す。発明例6では、最大幅が50~250nmのEOR欠陥が観察された。発明例1~5でも同様であった。これは、SiHxイオンの注入に起因する欠陥であると推測される。なお、比較例4のTEM画像(図示せず)においては、直径が5nm程度の黒点状欠陥が、注入飛程よりも浅い位置に観察された。これは、比較例4では注入炭素量が多いことから、注入炭素に起因する欠陥であると考えられる。表2には、発明例1~6及び比較例1~4に関して、黒点状欠陥の有無と、EOR欠陥の密度を示した。
SIMSプロファイルと断面TEM観察を合わせて考慮すると、発明例1~6では、以下のような現象が起きたものと推測される。SiHxイオンの注入に起因して、改質層のエピタキシャル層との界面近傍に、比較的大きな注入欠陥が形成される。この注入欠陥に、C2H5イオンに由来する注入された炭素が集合し、さらにここに水素が捕獲されることによって、高いゲッタリング能力を発揮しうるEOR欠陥領域が形成されたものと推測される。
発明例1~6及び比較例1~4において、図5に示す炭素濃度プロファイルの4.0μmから4.9μmまでを積分することによって、エピタキシャル成長に伴う、改質層からエピタキシャル層への炭素の拡散量を求めた。結果を表2に示す。表2から明らかなように、発明例1~6では、比較例4よりも炭素注入量を少なくした結果、炭素拡散量も比較例4より減らすことができた。
発明例1~6及び比較例1~4において、デバイス模擬熱処理条件(1050℃、2.5時間、窒素ガス雰囲気)にて熱処理を行った後、炭素濃度プロファイルの0.2μmから4.9μmまでを積分することによって、デバイス模擬熱処理に伴う改質層からエピタキシャル層への炭素拡散量を求めた。結果を表2に示す。表2から明らかなように発明例1~6では、比較例4よりも炭素注入量を少なくした結果、炭素拡散量も比較例4より減らすことができた。
発明例1~6及び比較例1~4において、エピタキシャルシリコンウェーハのエピタキシャル層の表面を、Ni汚染液を用いてスピンコート汚染法により強制的に汚染し、次いで、窒素ガス雰囲気中において900℃で60分間の熱処理を施した。その後、各エピタキシャルウェーハについてSIMS測定を行い、ウェーハの深さ方向におけるNi濃度プロファイルを測定し、ピーク面積を求めた。ピーク面積が大きいほど、多くのNiを捕獲できているため、ゲッタリング能力が高いと評価できる。そこで、ピーク面積をNi捕獲量として、表2に示した。また、Cu汚染液を用いて同様の試験を行い、同様にしてCu捕獲量を求め、表2に示した。
10 シリコンウェーハ
10A シリコンウェーハの表面
12 クラスターイオン
12A SiHxイオン
12B C2Hyイオン
14 改質層
16 シリコンエピタキシャル層
Claims (8)
- シリコンウェーハの表面に、SiHx(xは1~3の整数から選択される1つ以上)のイオンとC2Hy(yは2~5の整数から選択される1つ以上)のイオンとを含むクラスターイオンビームを照射して、前記シリコンウェーハの表層部に、前記クラスターイオンビームの構成元素が固溶した改質層を形成する工程と、
前記シリコンウェーハの改質層上にシリコンエピタキシャル層を形成する工程と、
を有し、前記SiHxイオンのドーズ量を1.5×1014ions/cm2以上とすることを特徴とするエピタキシャルシリコンウェーハの製造方法。 - 前記C2Hyイオンのドーズ量を1.0×1014ions/cm2以下とする、請求項1に記載のエピタキシャルシリコンウェーハの製造方法。
- 前記クラスターイオンビームの原料ガスがジエチルシランである、請求項1又は2に記載のエピタキシャルシリコンウェーハの製造方法。
- 前記クラスターイオンビームにおいて、xが1、2及び3であり、yが5である、請求項1~3のいずれか一項に記載のエピタキシャルシリコンウェーハの製造方法。
- 前記シリコンエピタキシャル層の厚さが4μm以下である、請求項1~4のいずれか一項に記載のエピタキシャルシリコンウェーハの製造方法。
- シリコンウェーハと、
前記シリコンウェーハの表層部に形成された、炭素及び水素の少なくとも一方が固溶した改質層と、
前記改質層上に形成されたシリコンエピタキシャル層と、
を有し、
前記改質層の断面TEM画像による欠陥評価において、前記改質層には、最大幅が50~250nmのEOR欠陥が5.0×107個/cm2以上の密度で存在する欠陥領域が観察され、
前記シリコンエピタキシャル層及び前記改質層に分布する炭素の量が2.0×1014atoms/cm2以下であり、
前記改質層の深さ方向におけるSIMSの水素濃度プロファイルにおいて、ピーク濃度が1.0×1016atoms/cm3以上であることを特徴とするエピタキシャルシリコンウェーハ。 - 請求項1~5のいずれか一項に記載のエピタキシャルシリコンウェーハの製造方法と、
前記エピタキシャルシリコンウェーハの前記シリコンエピタキシャル層に半導体デバイスを形成する工程と、
を有する半導体デバイスの製造方法。 - 請求項6に記載のエピタキシャルシリコンウェーハの前記シリコンエピタキシャル層に半導体デバイスを形成する工程を有する、半導体デバイスの製造方法。
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Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2009540536A (ja) * | 2006-06-12 | 2009-11-19 | セムイクウィップ・インコーポレーテッド | 蒸発装置 |
JP2010283022A (ja) * | 2009-06-02 | 2010-12-16 | Sumco Corp | シリコンウェーハおよびその製造方法 |
WO2012157162A1 (ja) * | 2011-05-13 | 2012-11-22 | 株式会社Sumco | 半導体エピタキシャルウェーハの製造方法、半導体エピタキシャルウェーハ、および固体撮像素子の製造方法 |
WO2015104965A1 (ja) * | 2014-01-07 | 2015-07-16 | 株式会社Sumco | 半導体エピタキシャルウェーハの製造方法、半導体エピタキシャルウェーハ、および固体撮像素子の製造方法 |
JP2017112339A (ja) * | 2015-12-18 | 2017-06-22 | 株式会社Sumco | シリコンゲルマニウムエピタキシャルウェーハの製造方法およびシリコンゲルマニウムエピタキシャルウェーハ |
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US9147574B2 (en) * | 2013-03-14 | 2015-09-29 | Tokyo Electron Limited | Topography minimization of neutral layer overcoats in directed self-assembly applications |
WO2015023903A1 (en) | 2013-08-16 | 2015-02-19 | Entegris, Inc. | Silicon implantation in substrates and provision of silicon precursor compositions therefor |
-
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Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
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JP2010283022A (ja) * | 2009-06-02 | 2010-12-16 | Sumco Corp | シリコンウェーハおよびその製造方法 |
WO2012157162A1 (ja) * | 2011-05-13 | 2012-11-22 | 株式会社Sumco | 半導体エピタキシャルウェーハの製造方法、半導体エピタキシャルウェーハ、および固体撮像素子の製造方法 |
WO2015104965A1 (ja) * | 2014-01-07 | 2015-07-16 | 株式会社Sumco | 半導体エピタキシャルウェーハの製造方法、半導体エピタキシャルウェーハ、および固体撮像素子の製造方法 |
JP2017112339A (ja) * | 2015-12-18 | 2017-06-22 | 株式会社Sumco | シリコンゲルマニウムエピタキシャルウェーハの製造方法およびシリコンゲルマニウムエピタキシャルウェーハ |
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WO2024176711A1 (ja) * | 2023-02-22 | 2024-08-29 | 株式会社Sumco | エピタキシャルシリコンウェーハ及びその製造方法、並びに半導体デバイスの製造方法 |
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