WO2008010385A1 - Procédé d'analyse et appareil d'analyse - Google Patents
Procédé d'analyse et appareil d'analyse Download PDFInfo
- Publication number
- WO2008010385A1 WO2008010385A1 PCT/JP2007/062526 JP2007062526W WO2008010385A1 WO 2008010385 A1 WO2008010385 A1 WO 2008010385A1 JP 2007062526 W JP2007062526 W JP 2007062526W WO 2008010385 A1 WO2008010385 A1 WO 2008010385A1
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- WO
- WIPO (PCT)
- Prior art keywords
- substrate
- analysis method
- film
- analysis
- ultraviolet rays
- Prior art date
Links
- 238000000034 method Methods 0.000 title claims abstract description 22
- 239000000758 substrate Substances 0.000 claims abstract description 122
- 238000012545 processing Methods 0.000 claims abstract description 39
- 238000004458 analytical method Methods 0.000 claims description 100
- 239000011248 coating agent Substances 0.000 claims description 19
- 238000000576 coating method Methods 0.000 claims description 19
- NBVXSUQYWXRMNV-UHFFFAOYSA-N fluoromethane Chemical compound FC NBVXSUQYWXRMNV-UHFFFAOYSA-N 0.000 claims description 18
- 239000002184 metal Substances 0.000 claims description 16
- 229910052751 metal Inorganic materials 0.000 claims description 16
- 238000010438 heat treatment Methods 0.000 claims description 15
- 239000012491 analyte Substances 0.000 claims description 13
- 230000001678 irradiating effect Effects 0.000 claims description 11
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims description 10
- 239000001301 oxygen Substances 0.000 claims description 10
- 229910052760 oxygen Inorganic materials 0.000 claims description 10
- 238000001095 inductively coupled plasma mass spectrometry Methods 0.000 claims description 9
- 239000000126 substance Substances 0.000 claims description 8
- 238000001479 atomic absorption spectroscopy Methods 0.000 claims description 7
- 150000001875 compounds Chemical class 0.000 claims description 7
- 239000001257 hydrogen Substances 0.000 claims description 4
- 229910052739 hydrogen Inorganic materials 0.000 claims description 4
- 238000002354 inductively-coupled plasma atomic emission spectroscopy Methods 0.000 claims description 3
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 claims description 2
- 239000000463 material Substances 0.000 abstract description 5
- 239000013076 target substance Substances 0.000 description 21
- 238000010586 diagram Methods 0.000 description 17
- 230000000694 effects Effects 0.000 description 7
- 239000000356 contaminant Substances 0.000 description 6
- 238000011109 contamination Methods 0.000 description 6
- 238000004090 dissolution Methods 0.000 description 6
- 238000012986 modification Methods 0.000 description 5
- 230000004048 modification Effects 0.000 description 5
- 238000001020 plasma etching Methods 0.000 description 5
- 238000012546 transfer Methods 0.000 description 5
- KRHYYFGTRYWZRS-UHFFFAOYSA-N Fluorane Chemical compound F KRHYYFGTRYWZRS-UHFFFAOYSA-N 0.000 description 4
- 238000005530 etching Methods 0.000 description 4
- 229910052731 fluorine Inorganic materials 0.000 description 4
- 239000007788 liquid Substances 0.000 description 4
- 239000004065 semiconductor Substances 0.000 description 4
- 229910052799 carbon Inorganic materials 0.000 description 3
- 238000006243 chemical reaction Methods 0.000 description 3
- 239000007789 gas Substances 0.000 description 3
- 150000002431 hydrogen Chemical class 0.000 description 3
- 239000006166 lysate Substances 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 150000002926 oxygen Chemical class 0.000 description 3
- 238000006722 reduction reaction Methods 0.000 description 3
- 238000001228 spectrum Methods 0.000 description 3
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 2
- YCKRFDGAMUMZLT-UHFFFAOYSA-N Fluorine atom Chemical compound [F] YCKRFDGAMUMZLT-UHFFFAOYSA-N 0.000 description 2
- 238000011156 evaluation Methods 0.000 description 2
- 239000011737 fluorine Substances 0.000 description 2
- 150000002739 metals Chemical class 0.000 description 2
- 238000007254 oxidation reaction Methods 0.000 description 2
- 125000004430 oxygen atom Chemical group O* 0.000 description 2
- 238000002294 plasma sputter deposition Methods 0.000 description 2
- 238000004451 qualitative analysis Methods 0.000 description 2
- 238000004445 quantitative analysis Methods 0.000 description 2
- 238000004544 sputter deposition Methods 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- CBENFWSGALASAD-UHFFFAOYSA-N Ozone Chemical compound [O-][O+]=O CBENFWSGALASAD-UHFFFAOYSA-N 0.000 description 1
- 229910004298 SiO 2 Inorganic materials 0.000 description 1
- 230000008602 contraction Effects 0.000 description 1
- 239000013078 crystal Substances 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 239000003344 environmental pollutant Substances 0.000 description 1
- 238000000322 laser mass spectrometry Methods 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 229910052757 nitrogen Inorganic materials 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000001420 photoelectron spectroscopy Methods 0.000 description 1
- 231100000719 pollutant Toxicity 0.000 description 1
- 229920000642 polymer Polymers 0.000 description 1
- 239000010453 quartz Substances 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 229910052594 sapphire Inorganic materials 0.000 description 1
- 239000010980 sapphire Substances 0.000 description 1
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N silicon dioxide Inorganic materials O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 1
- 230000003595 spectral effect Effects 0.000 description 1
- 238000009281 ultraviolet germicidal irradiation Methods 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L22/00—Testing or measuring during manufacture or treatment; Reliability measurements, i.e. testing of parts without further processing to modify the parts as such; Structural arrangements therefor
-
- 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
- H01L21/67—Apparatus specially adapted for handling semiconductor or electric solid state devices during manufacture or treatment thereof; Apparatus specially adapted for handling wafers during manufacture or treatment of semiconductor or electric solid state devices or components ; Apparatus not specifically provided for elsewhere
- H01L21/67005—Apparatus not specifically provided for elsewhere
- H01L21/67011—Apparatus for manufacture or treatment
- H01L21/67155—Apparatus for manufacturing or treating in a plurality of work-stations
- H01L21/67207—Apparatus for manufacturing or treating in a plurality of work-stations comprising a chamber adapted to a particular process
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
- G01N21/17—Systems in which incident light is modified in accordance with the properties of the material investigated
- G01N21/25—Colour; Spectral properties, i.e. comparison of effect of material on the light at two or more different wavelengths or wavelength bands
- G01N21/31—Investigating relative effect of material at wavelengths characteristic of specific elements or molecules, e.g. atomic absorption spectrometry
- G01N21/3103—Atomic absorption analysis
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
- G01N21/17—Systems in which incident light is modified in accordance with the properties of the material investigated
- G01N21/25—Colour; Spectral properties, i.e. comparison of effect of material on the light at two or more different wavelengths or wavelength bands
- G01N21/31—Investigating relative effect of material at wavelengths characteristic of specific elements or molecules, e.g. atomic absorption spectrometry
- G01N21/33—Investigating relative effect of material at wavelengths characteristic of specific elements or molecules, e.g. atomic absorption spectrometry using ultraviolet light
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
- G01N21/62—Systems in which the material investigated is excited whereby it emits light or causes a change in wavelength of the incident light
- G01N21/66—Systems in which the material investigated is excited whereby it emits light or causes a change in wavelength of the incident light electrically excited, e.g. electroluminescence
- G01N21/68—Systems in which the material investigated is excited whereby it emits light or causes a change in wavelength of the incident light electrically excited, e.g. electroluminescence using high frequency electric fields
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
- H01J49/00—Particle spectrometers or separator tubes
- H01J49/02—Details
- H01J49/04—Arrangements for introducing or extracting samples to be analysed, e.g. vacuum locks; Arrangements for external adjustment of electron- or ion-optical components
- H01J49/0459—Arrangements for introducing or extracting samples to be analysed, e.g. vacuum locks; Arrangements for external adjustment of electron- or ion-optical components for solid samples
- H01J49/0463—Desorption by laser or particle beam, followed by ionisation as a separate step
Definitions
- the present invention relates to an analysis method and an analysis apparatus for analyzing a substance to be analyzed on a substrate.
- FIGS. 1A to 1D are diagrams schematically showing an analysis method for analyzing metal contamination on a Si substrate.
- FIG. 1A shows a Si substrate 1 to be analyzed.
- a solution 2 containing, for example, HF is dropped on the Si substrate 1.
- the solution 2 that has been dropped into a spherical droplet is scanned over the substrate 1 to dissolve the metal on the substrate 1.
- the solution 2 in which contaminants such as metals are dissolved is collected and analyzed by a method such as ICP-MS to qualitatively or quantitatively detect metal contamination on the Si substrate 1.
- a method such as ICP-MS to qualitatively or quantitatively detect metal contamination on the Si substrate 1.
- Patent Document 1 Japanese Patent Application Publication No. 8-233709
- FIG. 2A schematically shows a Si substrate 1 to be analyzed and a coating 3 formed on the Si substrate 1. It is the figure shown in. As shown in FIG. 2A, for example, when the coating 3 is formed so as to cover the surface of the Si substrate 1, it becomes difficult to dissolve the metal on the Si substrate 1 by the solution.
- a plasma etching process using a fluorocarbon-based gas (CF, CHF, etc.)
- a fluorocarbon-based film may be formed on the substrate.
- a fluorocarbon-based film has a characteristic that it is not easily dissolved by an HF-based solution (or HF vapor). For this reason, it may be difficult to analyze the contamination state of the substrate in the substrate processing in the plasma etching apparatus.
- the present invention has a general object to provide a new and useful analysis method that can solve the above-described problems, and an analysis apparatus that performs this analysis method.
- a specific object of the present invention is that an analysis target substance existing on the substrate surface can be analyzed with good accuracy when the analysis target substance on the substrate is covered with a film. It is providing the analysis method and the analyzer which implements this analysis method.
- the first aspect of the present invention includes a first step of removing the coating film formed on the substrate by irradiating with ultraviolet rays, and a solution on the surface of the substrate.
- a first step of removing the coating film formed on the substrate by irradiating with ultraviolet rays and a solution on the surface of the substrate.
- an analysis method having a second step of dissolving the analyte to be analyzed on the substrate and a third step of analyzing the analyte in the solution used in the second step .
- a second aspect of the present invention provides the analysis method according to the first aspect, wherein the coating film is a fluorocarbon film.
- a third aspect of the present invention is the analysis method according to the second aspect, wherein the first step includes oxygen. An analytical method performed in an atmosphere is provided.
- a fourth aspect of the present invention is the analysis method according to the third aspect, wherein the compound formed in the first step is removed by irradiating the substrate with ultraviolet rays in an atmosphere containing hydrogen. An analysis method further comprising another removal step is provided.
- a fifth aspect of the present invention provides an analysis method according to the fourth aspect, wherein the first step and another removal step are repeatedly performed alternately.
- a sixth aspect of the present invention provides the analysis method according to any one of the first to fifth aspects, wherein the analysis target substance contains a metal.
- a seventh aspect of the present invention is the analysis method according to the seventh aspect, wherein the analysis in the third step includes inductively coupled plasma mass spectrometry, inductively coupled plasma atomic emission spectrometry, and An analysis method performed by any of atomic absorption spectrometry is provided.
- An eighth aspect of the present invention provides the analysis method according to any one of the first to seventh aspects, wherein the substrate is a Si substrate.
- a ninth aspect of the present invention provides the analysis method according to the eighth aspect, further comprising the step of removing an oxide film formed on the Si substrate.
- a tenth aspect of the present invention provides the analysis method according to any one of the first to ninth aspects, further comprising a heating step of heating the substrate after irradiation with ultraviolet rays. .
- a first processing unit that removes the coating film formed on the substrate by irradiating with ultraviolet rays, and a solution is supplied to the surface of the substrate to supply the solution on the substrate.
- an analyzer having a second processing unit that dissolves the analysis target substance, and a third processing unit that analyzes the analysis target substance in the solution used in the second processing unit.
- a twelfth aspect of the present invention provides the analyzer according to the eleventh aspect, which has a heating mechanism for heating the substrate after being irradiated with ultraviolet rays.
- FIG. 1A is a diagram showing one process of a conventional analysis method.
- FIG. 1B is a diagram showing another process of the conventional analysis method.
- FIG. 1C is a diagram showing another process of the conventional analysis method.
- FIG. 1D is a diagram showing still another process of the conventional analysis method.
- FIG. 2A is a diagram showing an example of a problem of a conventional analysis method.
- FIG. 2B is a diagram showing another example of problems in the conventional analysis method.
- FIG. 3 is a flowchart showing an analysis method according to Example 1.
- FIG. 4A is a diagram showing a step of the analysis method according to Example 1.
- FIG. 4B is a diagram showing another step of the analysis method according to Example 1.
- FIG. 4C is a diagram showing still another step of the analysis method according to Example 1.
- FIG. 4D is a diagram showing still another process of the analysis method according to Example 1.
- FIG. 5 is a diagram showing a modification of FIG.
- FIG. 6 is a view showing another modification of FIG.
- FIG. 7A is a diagram showing an example of an XPS analysis result on a substrate surface.
- FIG. 7B is a diagram showing another example of the XPS analysis result of the substrate surface.
- FIG. 8A is a diagram showing still another example of the XPS analysis result of the substrate surface.
- FIG. 8B is a diagram showing still another example of the XPS analysis result of the substrate surface.
- FIG. 9A is a cross-sectional TEM photograph of the substrate before film removal.
- FIG. 9B is a cross-sectional TEM photograph of the substrate after removal of the film.
- FIG. 10 shows an analyzer according to Example 2.
- An analysis method includes: 1) a first step of removing a film formed on a substrate by irradiating with ultraviolet rays; and 2) supplying a solution to the substrate surface. A second step of dissolving the analyte on the substrate, and 3) a third step of analyzing the analyte in the solution used in the second step.
- the analysis target substance is, for example, a fluorocarbon-based film (including C element and F element, having C—C bond, C—F bond, etc.
- the coating is removed by irradiation with ultraviolet rays so that the substance to be analyzed can be dissolved by the solution.
- the removal of the film by ultraviolet irradiation is less likely to cause the analyte to be scattered compared to methods such as etching and sputtering, and the reaction is slow. There are few worries about generating. This makes it possible to analyze the target substance with good accuracy.
- the material constituting the fluorocarbon-based film is decomposed by the irradiation of ultraviolet rays (the bond is cut). Further, in this case, if the atmosphere contains oxygen, it is preferable because the film is etched by the activated oxygen.
- FIG. 3 is a flowchart showing an analysis method according to Example 1 of the present invention
- FIG. 4D is a diagram schematically showing the analysis method according to Example 1 of the present invention step by step.
- step 10 of FIG. 3 the film formed so as to cover the substance to be analyzed on the substrate is removed by irradiation with ultraviolet rays.
- Step 10 is shown schematically in FIG. 4A.
- the coating film 101 is removed by irradiating the coating film 101 made of, for example, a fluorocarbon-based material, for example, on the S-beam substrate 100 with ultraviolet light 103 having a wavelength of about 100 nm to 320 nm. .
- the substrate 100 it is preferable to heat the substrate 100 and raise the temperature of the substrate 100 because the reaction of removing the film is promoted.
- the substrate temperature is, for example, about room temperature to about 400 ° C.
- a solution is supplied to the substrate surface to dissolve the analyte to be analyzed attached to the substrate surface.
- Step 20 is shown schematically in FIGS. 4B-4D.
- a solution 104 containing, for example, HF (hydrofluoric acid) is supplied (dropped) to the surface of the substrate 100 from which the coating 101 has been removed.
- FIGS. 4C to 4D the direction in which the substrate 100 is tilted is controlled, the solution 104 (droplet) on the substrate 100 is scanned, and the analyte to be deposited on the substrate 100 (for example, metal) ) Is sufficiently dissolved in the solution 104.
- the lysate 104 is recovered, and this lysate 104 is analyzed by a method such as inductively coupled plasma mass spectrometry (ICP-MS), for example. Perform qualitative and quantitative analysis of substances (metals).
- ICP-MS inductively coupled plasma mass spectrometry
- the analysis method of the lysate 104 is not limited to ICP-MS, and for example, a known method such as inductively coupled plasma atomic emission spectrometry (IC P-AAS) or atomic absorption spectrometry (AAS) is used. be able to.
- a film is formed on a substrate.
- a plasma etching apparatus using a fluorocarbon-based gas (CF, CHF, etc.)
- a fluorocarbon-based film which is difficult to remove with HF, may be formed on the substrate.
- a fluorocarbon-based film which is difficult to remove with HF, may be formed on the substrate.
- it may be difficult to analyze the analysis object on the substrate surface.
- the analysis method according to the present embodiment is characterized in that the coating film is removed by ultraviolet irradiation to facilitate recovery of the analysis target substance.
- the removal of the coating by ultraviolet irradiation described above generates less new contaminants because there is less concern that the analyte will be scattered compared to methods such as etching and sputtering, and the reaction is slow. There is little concern about it. Therefore, it becomes possible to analyze the analysis target substance with good accuracy.
- Step 10 when the film 101 is irradiated with ultraviolet rays, if the atmosphere 102 contains oxygen, oxygen is activated by the ultraviolet rays.
- activated oxygen is present in the vicinity of the film 101, in addition to the effect of decomposing the film by ultraviolet rays, the effect of etching the film by activated oxygen is added, and the efficiency of film removal is improved, which is preferable. is there.
- the process of Step 10 (FIG. 4A) can be performed in an atmosphere containing ordinary oxygen, but an atmosphere in which the oxygen concentration, nitrogen concentration, etc. are changed may be used as necessary.
- atmosphere 102 oxygen atoms such as ozone and NO
- step 15 is provided between step 10 and step 20 described above.
- an oxide film on the surface of the substrate 100 made of Si (
- SiO 2 is removed.
- HF vapor is supplied to the substrate 100 to remove the oxide film.
- this step can be omitted.
- removal of the oxide film and dissolution of the analysis target substance are performed by the dissolving liquid 104 supplied in step 20. Qualitatively at the same time.
- step 15 it is not necessary to remove the oxide film with the solution 104, so that the amount of the solution 104 supplied to the substrate 100 in step 20 can be reduced. For this reason, there is an effect that the accuracy of the analysis of the analyte is improved.
- the heating of the substrate and the treatment with HF are repeated to cause shrinkage and expansion of the fluorocarbon-based film so that the oxide film can be easily removed. It may be.
- the substrate temperature is heated from room temperature to about 400 ° C. and step 10 is performed, the substrate temperature is set to about room temperature and the process corresponding to step 15 (HF process) is performed.
- the substrate is heated again to about 300 ° C in an air atmosphere, and the substrate temperature is set to about room temperature, followed by processing corresponding to step 15 (HF processing).
- the oxide film can be easily removed by the expansion or contraction of the film.
- FIG. 6 shows another modification of the analysis method shown in FIG.
- the steps described above are denoted by the same reference numerals and description thereof is omitted.
- step 10A is provided between step 10 and step 20 described above.
- the compound that may be formed in Step 10 can be removed by irradiating the substrate 100 with ultraviolet rays 103 in an atmosphere different from that in Step 10.
- step 10 depending on the conditions of ultraviolet irradiation, the composition of the film, etc., there is a concern that an oxidation reaction occurs due to ultraviolet irradiation, and a CO compound is formed and adheres to the substrate 100.
- Step 10A ultraviolet rays are applied to the substrate 100 in a hydrogen (H 2) atmosphere.
- step 10 and step 10A may be repeated alternately (that is, oxidation and reduction are repeated) to remove the film 101.
- step 15 oxide film removal step shown in FIG. 5 is performed after step 1 OA. It may be.
- FIGS. 7A and 7B show the photoelectron spectroscopy of the substrate surface before and after ultraviolet irradiation (before and after step 10 in FIG. 3) in a structure in which a fluorocarbon-based film is formed on the Si substrate. It is the figure which showed the (XPS) spectrum.
- FIG. 7A shows the Cls spectrum and
- FIG. 7B shows the Fls spectrum.
- the wavelength of ultraviolet light is 172 nm
- the substrate temperature is 200 ° C.
- a film having a thickness of about 6 nm is irradiated with ultraviolet light for 300 seconds.
- peaks related to C and F such as C—C bond and C—F bond in the film are lowered, and the fluorocarbon-based film is removed.
- the peaks remaining after irradiation are related to hide-mouthed carbon and adsorbed fluorine, and the fluorocarbon film is well removed.
- FIGS. 8A and 8B show the reduction rate of the C element and C element in the coating, calculated by XPS spectral force, with the time course as the horizontal axis.
- the substrate temperature is about room temperature
- the substrate temperature is 200 ° C.
- FIG. 9A shows a fluorocarbon-based film (CF polymer in the figure) on the SiO film on the Si substrate.
- FIG. 9B is a TEM photograph after the film of FIG. 9A is irradiated with ultraviolet rays.
- the wavelength of ultraviolet rays is 172 nm
- the substrate temperature is 200 ° C.
- a film having a thickness of about 6 nm is irradiated with ultraviolet rays for 300 seconds.
- FIG. 9A Comparison of FIG. 9A and FIG. 9B shows that the fluorocarbon-based film can be removed by irradiation with ultraviolet rays.
- FIG. 10 is a plan view schematically showing an analysis apparatus 200 for performing the analysis method described in the first embodiment.
- analyzer 200 has a transfer chamber 202 in which a substrate is transferred. Further, a wafer (substrate) port 201, a UV processing (irradiation) unit 203, an oxide film removal processing unit 204, a solution supply processing unit (detection object dissolution processing unit) 205, a solution holding unit 206, a solution introduction unit 207 and an analysis processing unit 208 are connected so as to surround the transfer chamber 202. Further, the UV processing unit 203 may have a heating mechanism as necessary.
- Synthetic quartz is generally used as a material constituting the UV processing unit 203, but single crystal sapphire or BaF is used to prevent damage caused by fluorine remaining on the substrate.
- the substrate 100 installed in the wafer port 201 is transported to the UV processing unit 203 by transport means such as a transport arm (not shown).
- processing corresponding to Step 10 in FIG. 3 (FIG. 4A) is performed. That is, as shown in FIG. 4A, the film 101 is removed by irradiating the film 101 formed on the substrate 100 with ultraviolet rays 103 in an atmosphere 102 containing oxygen. Further, if necessary, the atmosphere 102 around the substrate 100 may be changed to an atmosphere containing hydrogen, and further irradiated with ultraviolet rays to remove the compound generated in step 10. (Equivalent to step 10A in Figure 6). Also, the processing power equivalent to Step 10 and Step 10A may be repeated alternately in the UV processing unit 203.
- the UV processing unit 203 may be configured to have a heating mechanism for heating the substrate.
- the substrate 100 is transferred to the oxide film removal processing unit 204 by the transfer means.
- the oxide film removal processing unit 204 a process corresponding to step 15 in FIG. 5 is performed. That is, for example, by supplying HF vapor to the substrate 100, the oxide film formed on the substrate 100 is removed. Further, as described above, the oxide film removal in the oxide film removal processing unit 204 can be omitted. In order to more effectively remove the coating 101 and the oxide film, the film 101 may be transported again to the UV processing unit 203 and subjected to UV irradiation or heat treatment.
- the substrate 100 is transferred to the solution supply processing unit 205 by the transfer means.
- the transfer means Melting In the solution supply processing unit 205, processing corresponding to step 20 (FIGS. 4B to 4D) in FIG. 3 is performed.
- a solution 104 containing, for example, HF (hydrofluoric acid) is supplied (dropped) to the surface of the substrate 100 from which the film 101 has been removed. Further, as shown in FIGS. 4C to 4D, the direction in which the substrate 100 is tilted is controlled, the dissolution liquid 104 (droplet) on the substrate 100 is scattered, and the analysis target substance (for example, metal) attached on the substrate 100 Etc.) is sufficiently dissolved in the dissolution liquid 104.
- HF hydrofluoric acid
- the solution in which the analysis target substance is dissolved is collected and held in the solution holding unit 206. Further, this solution is introduced into the analysis processing unit 208 by the solution introduction unit 207 and analyzed by an apparatus such as ICP-MS, for example, to perform qualitative analysis and quantitative analysis of the analysis target substance (metal). Done. Further, the analysis processing unit 208 is not limited to the ICP-MS device, and may be configured to include, for example, an ICP-AAS device or an AAS device.
- the analyzer 200 According to the analyzer 200, the effects described in the first embodiment can be obtained.
- the analyzer 200 is configured so that the substrate and the solution can be quickly conveyed and processed continuously, so that it is possible to analyze contaminants on the substrate with good accuracy. Become.
- an analysis method capable of analyzing the analysis target substance under the film with good accuracy, and this And an analyzer for performing the analysis method.
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Description
Claims
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US12/280,845 US7923680B2 (en) | 2006-07-19 | 2007-06-21 | Analysis method and analysis apparatus |
CN2007800099265A CN101405855B (zh) | 2006-07-19 | 2007-06-21 | 分析方法和分析装置 |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2006196946A JP4772610B2 (ja) | 2006-07-19 | 2006-07-19 | 分析方法 |
JP2006-196946 | 2006-07-19 |
Publications (1)
Publication Number | Publication Date |
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WO2008010385A1 true WO2008010385A1 (fr) | 2008-01-24 |
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Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
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PCT/JP2007/062526 WO2008010385A1 (fr) | 2006-07-19 | 2007-06-21 | Procédé d'analyse et appareil d'analyse |
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Country | Link |
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US (1) | US7923680B2 (ja) |
JP (1) | JP4772610B2 (ja) |
KR (1) | KR101064842B1 (ja) |
CN (1) | CN101405855B (ja) |
TW (1) | TWI404154B (ja) |
WO (1) | WO2008010385A1 (ja) |
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CN108732188B (zh) * | 2018-07-31 | 2023-10-10 | 苏州中汽检测技术服务有限公司 | 车用橡胶件污染物萃取装置及污染物萃取测定方法 |
Citations (5)
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JPH04164251A (ja) * | 1990-10-29 | 1992-06-09 | Nec Corp | レジストの純度評価法 |
JPH06283582A (ja) * | 1993-03-26 | 1994-10-07 | Toshiba Corp | 半導体基板表面吸着有機物の測定方法 |
JPH07161791A (ja) * | 1993-12-09 | 1995-06-23 | Toshiba Corp | 半導体基板の不純物分析方法 |
JP2001208743A (ja) * | 2000-01-26 | 2001-08-03 | Shin Etsu Handotai Co Ltd | シリコンウエーハ中の金属不純物濃度評価方法 |
JP2006032859A (ja) * | 2004-07-21 | 2006-02-02 | Siltronic Japan Corp | シリコンウェハの不純物の除去方法及び分析方法 |
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JP2950032B2 (ja) * | 1992-08-19 | 1999-09-20 | 日本電気株式会社 | 不純物の分析方法および分析装置 |
JPH0817815A (ja) * | 1994-06-30 | 1996-01-19 | Toshiba Corp | 半導体デバイスの製造方法、半導体基板の処理方法、分析方法及び製造方法 |
JPH08237709A (ja) | 1995-02-27 | 1996-09-13 | Kokusai Electric Co Ltd | 無線呼出用受信機 |
JP4164251B2 (ja) | 2001-10-31 | 2008-10-15 | 東北パイオニア株式会社 | 有機elカラーディスプレイ及びその製造方法 |
US20050241670A1 (en) * | 2004-04-29 | 2005-11-03 | Dong Chun C | Method for cleaning a reactor using electron attachment |
-
2006
- 2006-07-19 JP JP2006196946A patent/JP4772610B2/ja not_active Expired - Fee Related
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2007
- 2007-06-21 KR KR1020087022798A patent/KR101064842B1/ko not_active IP Right Cessation
- 2007-06-21 CN CN2007800099265A patent/CN101405855B/zh not_active Expired - Fee Related
- 2007-06-21 WO PCT/JP2007/062526 patent/WO2008010385A1/ja active Application Filing
- 2007-06-21 US US12/280,845 patent/US7923680B2/en not_active Expired - Fee Related
- 2007-07-18 TW TW096126184A patent/TWI404154B/zh not_active IP Right Cessation
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
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JPH04164251A (ja) * | 1990-10-29 | 1992-06-09 | Nec Corp | レジストの純度評価法 |
JPH06283582A (ja) * | 1993-03-26 | 1994-10-07 | Toshiba Corp | 半導体基板表面吸着有機物の測定方法 |
JPH07161791A (ja) * | 1993-12-09 | 1995-06-23 | Toshiba Corp | 半導体基板の不純物分析方法 |
JP2001208743A (ja) * | 2000-01-26 | 2001-08-03 | Shin Etsu Handotai Co Ltd | シリコンウエーハ中の金属不純物濃度評価方法 |
JP2006032859A (ja) * | 2004-07-21 | 2006-02-02 | Siltronic Japan Corp | シリコンウェハの不純物の除去方法及び分析方法 |
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Publication number | Publication date |
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JP4772610B2 (ja) | 2011-09-14 |
JP2008026063A (ja) | 2008-02-07 |
CN101405855B (zh) | 2010-09-15 |
KR101064842B1 (ko) | 2011-09-14 |
US20090218483A1 (en) | 2009-09-03 |
TWI404154B (zh) | 2013-08-01 |
KR20080102210A (ko) | 2008-11-24 |
CN101405855A (zh) | 2009-04-08 |
US7923680B2 (en) | 2011-04-12 |
TW200818369A (en) | 2008-04-16 |
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