WO2016009624A1 - 真空紫外光光源装置、光照射装置、及び自己組織化単分子膜のパターニング方法 - Google Patents
真空紫外光光源装置、光照射装置、及び自己組織化単分子膜のパターニング方法 Download PDFInfo
- Publication number
- WO2016009624A1 WO2016009624A1 PCT/JP2015/003467 JP2015003467W WO2016009624A1 WO 2016009624 A1 WO2016009624 A1 WO 2016009624A1 JP 2015003467 W JP2015003467 W JP 2015003467W WO 2016009624 A1 WO2016009624 A1 WO 2016009624A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- light
- vacuum ultraviolet
- vuv
- ultraviolet light
- lamp
- Prior art date
Links
Images
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
- H01J61/00—Gas-discharge or vapour-discharge lamps
- H01J61/84—Lamps with discharge constricted by high pressure
- H01J61/90—Lamps suitable only for intermittent operation, e.g. flash lamp
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J19/00—Chemical, physical or physico-chemical processes in general; Their relevant apparatus
- B01J19/08—Processes employing the direct application of electric or wave energy, or particle radiation; Apparatus therefor
- B01J19/12—Processes employing the direct application of electric or wave energy, or particle radiation; Apparatus therefor employing electromagnetic waves
-
- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03F—PHOTOMECHANICAL PRODUCTION OF TEXTURED OR PATTERNED SURFACES, e.g. FOR PRINTING, FOR PROCESSING OF SEMICONDUCTOR DEVICES; MATERIALS THEREFOR; ORIGINALS THEREFOR; APPARATUS SPECIALLY ADAPTED THEREFOR
- G03F7/00—Photomechanical, e.g. photolithographic, production of textured or patterned surfaces, e.g. printing surfaces; Materials therefor, e.g. comprising photoresists; Apparatus specially adapted therefor
- G03F7/0002—Lithographic processes using patterning methods other than those involving the exposure to radiation, e.g. by stamping
-
- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03F—PHOTOMECHANICAL PRODUCTION OF TEXTURED OR PATTERNED SURFACES, e.g. FOR PRINTING, FOR PROCESSING OF SEMICONDUCTOR DEVICES; MATERIALS THEREFOR; ORIGINALS THEREFOR; APPARATUS SPECIALLY ADAPTED THEREFOR
- G03F7/00—Photomechanical, e.g. photolithographic, production of textured or patterned surfaces, e.g. printing surfaces; Materials therefor, e.g. comprising photoresists; Apparatus specially adapted therefor
- G03F7/16—Coating processes; Apparatus therefor
- G03F7/165—Monolayers, e.g. Langmuir-Blodgett
-
- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03F—PHOTOMECHANICAL PRODUCTION OF TEXTURED OR PATTERNED SURFACES, e.g. FOR PRINTING, FOR PROCESSING OF SEMICONDUCTOR DEVICES; MATERIALS THEREFOR; ORIGINALS THEREFOR; APPARATUS SPECIALLY ADAPTED THEREFOR
- G03F7/00—Photomechanical, e.g. photolithographic, production of textured or patterned surfaces, e.g. printing surfaces; Materials therefor, e.g. comprising photoresists; Apparatus specially adapted therefor
- G03F7/16—Coating processes; Apparatus therefor
- G03F7/168—Finishing the coated layer, e.g. drying, baking, soaking
-
- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03F—PHOTOMECHANICAL PRODUCTION OF TEXTURED OR PATTERNED SURFACES, e.g. FOR PRINTING, FOR PROCESSING OF SEMICONDUCTOR DEVICES; MATERIALS THEREFOR; ORIGINALS THEREFOR; APPARATUS SPECIALLY ADAPTED THEREFOR
- G03F7/00—Photomechanical, e.g. photolithographic, production of textured or patterned surfaces, e.g. printing surfaces; Materials therefor, e.g. comprising photoresists; Apparatus specially adapted therefor
- G03F7/20—Exposure; Apparatus therefor
- G03F7/2002—Exposure; Apparatus therefor with visible light or UV light, through an original having an opaque pattern on a transparent support, e.g. film printing, projection printing; by reflection of visible or UV light from an original such as a printed image
- G03F7/2004—Exposure; Apparatus therefor with visible light or UV light, through an original having an opaque pattern on a transparent support, e.g. film printing, projection printing; by reflection of visible or UV light from an original such as a printed image characterised by the use of a particular light source, e.g. fluorescent lamps or deep UV light
-
- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03F—PHOTOMECHANICAL PRODUCTION OF TEXTURED OR PATTERNED SURFACES, e.g. FOR PRINTING, FOR PROCESSING OF SEMICONDUCTOR DEVICES; MATERIALS THEREFOR; ORIGINALS THEREFOR; APPARATUS SPECIALLY ADAPTED THEREFOR
- G03F7/00—Photomechanical, e.g. photolithographic, production of textured or patterned surfaces, e.g. printing surfaces; Materials therefor, e.g. comprising photoresists; Apparatus specially adapted therefor
- G03F7/70—Microphotolithographic exposure; Apparatus therefor
- G03F7/70008—Production of exposure light, i.e. light sources
- G03F7/70016—Production of exposure light, i.e. light sources by discharge lamps
-
- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03F—PHOTOMECHANICAL PRODUCTION OF TEXTURED OR PATTERNED SURFACES, e.g. FOR PRINTING, FOR PROCESSING OF SEMICONDUCTOR DEVICES; MATERIALS THEREFOR; ORIGINALS THEREFOR; APPARATUS SPECIALLY ADAPTED THEREFOR
- G03F7/00—Photomechanical, e.g. photolithographic, production of textured or patterned surfaces, e.g. printing surfaces; Materials therefor, e.g. comprising photoresists; Apparatus specially adapted therefor
- G03F7/70—Microphotolithographic exposure; Apparatus therefor
- G03F7/70008—Production of exposure light, i.e. light sources
- G03F7/70041—Production of exposure light, i.e. light sources by pulsed sources, e.g. multiplexing, pulse duration, interval control or intensity control
-
- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03F—PHOTOMECHANICAL PRODUCTION OF TEXTURED OR PATTERNED SURFACES, e.g. FOR PRINTING, FOR PROCESSING OF SEMICONDUCTOR DEVICES; MATERIALS THEREFOR; ORIGINALS THEREFOR; APPARATUS SPECIALLY ADAPTED THEREFOR
- G03F7/00—Photomechanical, e.g. photolithographic, production of textured or patterned surfaces, e.g. printing surfaces; Materials therefor, e.g. comprising photoresists; Apparatus specially adapted therefor
- G03F7/70—Microphotolithographic exposure; Apparatus therefor
- G03F7/70058—Mask illumination systems
- G03F7/7015—Details of optical elements
-
- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03F—PHOTOMECHANICAL PRODUCTION OF TEXTURED OR PATTERNED SURFACES, e.g. FOR PRINTING, FOR PROCESSING OF SEMICONDUCTOR DEVICES; MATERIALS THEREFOR; ORIGINALS THEREFOR; APPARATUS SPECIALLY ADAPTED THEREFOR
- G03F7/00—Photomechanical, e.g. photolithographic, production of textured or patterned surfaces, e.g. printing surfaces; Materials therefor, e.g. comprising photoresists; Apparatus specially adapted therefor
- G03F7/70—Microphotolithographic exposure; Apparatus therefor
- G03F7/70216—Mask projection systems
- G03F7/7035—Proximity or contact printers
-
- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03F—PHOTOMECHANICAL PRODUCTION OF TEXTURED OR PATTERNED SURFACES, e.g. FOR PRINTING, FOR PROCESSING OF SEMICONDUCTOR DEVICES; MATERIALS THEREFOR; ORIGINALS THEREFOR; APPARATUS SPECIALLY ADAPTED THEREFOR
- G03F7/00—Photomechanical, e.g. photolithographic, production of textured or patterned surfaces, e.g. printing surfaces; Materials therefor, e.g. comprising photoresists; Apparatus specially adapted therefor
- G03F7/70—Microphotolithographic exposure; Apparatus therefor
- G03F7/70425—Imaging strategies, e.g. for increasing throughput or resolution, printing product fields larger than the image field or compensating lithography- or non-lithography errors, e.g. proximity correction, mix-and-match, stitching or double patterning
- G03F7/70466—Multiple exposures, e.g. combination of fine and coarse exposures, double patterning or multiple exposures for printing a single feature
-
- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03F—PHOTOMECHANICAL PRODUCTION OF TEXTURED OR PATTERNED SURFACES, e.g. FOR PRINTING, FOR PROCESSING OF SEMICONDUCTOR DEVICES; MATERIALS THEREFOR; ORIGINALS THEREFOR; APPARATUS SPECIALLY ADAPTED THEREFOR
- G03F7/00—Photomechanical, e.g. photolithographic, production of textured or patterned surfaces, e.g. printing surfaces; Materials therefor, e.g. comprising photoresists; Apparatus specially adapted therefor
- G03F7/70—Microphotolithographic exposure; Apparatus therefor
- G03F7/708—Construction of apparatus, e.g. environment aspects, hygiene aspects or materials
- G03F7/70908—Hygiene, e.g. preventing apparatus pollution, mitigating effect of pollution or removing pollutants from apparatus
- G03F7/70933—Purge, e.g. exchanging fluid or gas to remove pollutants
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
- H01J61/00—Gas-discharge or vapour-discharge lamps
- H01J61/02—Details
- H01J61/12—Selection of substances for gas fillings; Specified operating pressure or temperature
- H01J61/16—Selection of substances for gas fillings; Specified operating pressure or temperature having helium, argon, neon, krypton, or xenon as the principle constituent
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
- H01J61/00—Gas-discharge or vapour-discharge lamps
- H01J61/02—Details
- H01J61/36—Seals between parts of vessels; Seals for leading-in conductors; Leading-in conductors
- H01J61/366—Seals for leading-in conductors
- H01J61/368—Pinched seals or analogous seals
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
- H01J61/00—Gas-discharge or vapour-discharge lamps
- H01J61/02—Details
- H01J61/54—Igniting arrangements, e.g. promoting ionisation for starting
- H01J61/545—Igniting arrangements, e.g. promoting ionisation for starting using an auxiliary electrode inside the vessel
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
- H01J61/00—Gas-discharge or vapour-discharge lamps
- H01J61/84—Lamps with discharge constricted by high pressure
- H01J61/86—Lamps with discharge constricted by high pressure with discharge additionally constricted by close spacing of electrodes, e.g. for optical projection
-
- 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
- H01L21/027—Making masks on semiconductor bodies for further photolithographic processing not provided for in group H01L21/18 or H01L21/34
-
- 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
- H01L21/027—Making masks on semiconductor bodies for further photolithographic processing not provided for in group H01L21/18 or H01L21/34
- H01L21/0271—Making masks on semiconductor bodies for further photolithographic processing not provided for in group H01L21/18 or H01L21/34 comprising organic layers
- H01L21/0273—Making masks on semiconductor bodies for further photolithographic processing not provided for in group H01L21/18 or H01L21/34 comprising organic layers characterised by the treatment of photoresist layers
- H01L21/0274—Photolithographic processes
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01S—DEVICES USING THE PROCESS OF LIGHT AMPLIFICATION BY STIMULATED EMISSION OF RADIATION [LASER] TO AMPLIFY OR GENERATE LIGHT; DEVICES USING STIMULATED EMISSION OF ELECTROMAGNETIC RADIATION IN WAVE RANGES OTHER THAN OPTICAL
- H01S3/00—Lasers, i.e. devices using stimulated emission of electromagnetic radiation in the infrared, visible or ultraviolet wave range
- H01S3/14—Lasers, i.e. devices using stimulated emission of electromagnetic radiation in the infrared, visible or ultraviolet wave range characterised by the material used as the active medium
- H01S3/22—Gases
- H01S3/223—Gases the active gas being polyatomic, i.e. containing two or more atoms
- H01S3/225—Gases the active gas being polyatomic, i.e. containing two or more atoms comprising an excimer or exciplex
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01S—DEVICES USING THE PROCESS OF LIGHT AMPLIFICATION BY STIMULATED EMISSION OF RADIATION [LASER] TO AMPLIFY OR GENERATE LIGHT; DEVICES USING STIMULATED EMISSION OF ELECTROMAGNETIC RADIATION IN WAVE RANGES OTHER THAN OPTICAL
- H01S3/00—Lasers, i.e. devices using stimulated emission of electromagnetic radiation in the infrared, visible or ultraviolet wave range
- H01S3/14—Lasers, i.e. devices using stimulated emission of electromagnetic radiation in the infrared, visible or ultraviolet wave range characterised by the material used as the active medium
- H01S3/22—Gases
- H01S3/223—Gases the active gas being polyatomic, i.e. containing two or more atoms
- H01S3/225—Gases the active gas being polyatomic, i.e. containing two or more atoms comprising an excimer or exciplex
- H01S3/2253—XeCl, i.e. xenon chloride is comprised for lasing around 308 nm
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01S—DEVICES USING THE PROCESS OF LIGHT AMPLIFICATION BY STIMULATED EMISSION OF RADIATION [LASER] TO AMPLIFY OR GENERATE LIGHT; DEVICES USING STIMULATED EMISSION OF ELECTROMAGNETIC RADIATION IN WAVE RANGES OTHER THAN OPTICAL
- H01S3/00—Lasers, i.e. devices using stimulated emission of electromagnetic radiation in the infrared, visible or ultraviolet wave range
- H01S3/14—Lasers, i.e. devices using stimulated emission of electromagnetic radiation in the infrared, visible or ultraviolet wave range characterised by the material used as the active medium
- H01S3/22—Gases
- H01S3/223—Gases the active gas being polyatomic, i.e. containing two or more atoms
- H01S3/225—Gases the active gas being polyatomic, i.e. containing two or more atoms comprising an excimer or exciplex
- H01S3/2255—XeF, i.e. xenon fluoride is comprised for lasing around 351 nm
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
- H05B41/00—Circuit arrangements or apparatus for igniting or operating discharge lamps
- H05B41/14—Circuit arrangements
- H05B41/30—Circuit arrangements in which the lamp is fed by pulses, e.g. flash lamp
- H05B41/34—Circuit arrangements in which the lamp is fed by pulses, e.g. flash lamp to provide a sequence of flashes
Definitions
- the present invention relates to a vacuum ultraviolet light source device that emits light including vacuum ultraviolet light, a light irradiation device equipped with the vacuum ultraviolet light source device, and a method for patterning a self-assembled monolayer using the light irradiation device. .
- Non-Patent Document 1 discloses that photopatterning processing of a SAM film that does not depend on a specific functional group is possible using VUV light. Specifically, an excimer lamp having a wavelength of 172 nm, which is used to remove contaminants made of organic substances, is used as an exposure light source.
- This method focuses on the oxidative decomposition removal reaction of SAM film by VUV light, and can be expected to develop various kinds of SAM films to optical micromachining.
- a low-pressure mercury lamp having an emission line at a wavelength of 185 nm has been used as a vacuum ultraviolet light source (hereinafter also referred to as “VUV light source”).
- VUV light source vacuum ultraviolet light source
- high-speed surface modification (for example, ashing) or the like can be realized particularly for light having a wavelength region of 180 nm or less in VUV light. Therefore, in recent years, there are many examples in which a xenon excimer lamp that emits light having a wavelength of 172 nm is used as a VUV light source.
- such a lamp that emits VUV light generally has a long light emitting portion, that is, a long light emission length.
- a low-pressure mercury lamp (UL0-6DQ manufactured by USHIO INC.) Has a light emission length of 10 cm.
- an excimer light unit (SUS06 manufactured by USHIO INC.) Incorporating a xenon excimer lamp has a light emission length of 10 cm.
- VUV light emitted from such a VUV lamp becomes divergent light because the shape of the light emitting region is substantially cylindrical.
- diverging light it is difficult to perform projection exposure, and contact exposure and proximity exposure are performed.
- the exposure to the irradiated object is limited by the influence of diverging light, and the resolvable pattern size is limited to about 100 ⁇ m as the line pattern width.
- the VUV light source there is an excimer laser device used for semiconductor exposure in addition to the above lamp.
- an excimer laser exposure apparatus equipped with an excimer laser apparatus it is possible to realize a fine pattern line width in patterning a SAM film.
- the excimer laser apparatus and the excimer laser exposure apparatus are expensive, and it is not practical from the viewpoint of COO (Cost-of-Ownership) to be used other than semiconductor exposure that is already in the mass production stage.
- COO Cost-of-Ownership
- Hiroyuki Sugimura “Optical microfabrication of organic monolayer”, Vacuum, Japan Vacuum Association, 2005, Vol. 48, No. 9, p. 506-510
- VUV light is absorbed by oxygen in the atmosphere, it is necessary to use it in a vacuum or in an inert gas atmosphere.
- the SAM film is irradiated with VUV light in such an oxygen-free atmosphere, only the SAM film is directly decomposed by VUV light, and the patterning rate cannot be improved.
- the SAM film is irradiated with VUV light in a processing atmosphere containing oxygen such as air, the oxygen in the vicinity of the SAM film surface becomes active oxygen by VUV irradiation, and along with the direct decomposition of the SAM film by VUV light, the above-mentioned An oxidative decomposition reaction between the active oxygen and the SAM film can also be performed.
- ozone is generated by the following chemical reaction.
- oxygen molecules in the air absorb ultraviolet rays and enter an excited state.
- the excited oxygen molecules become excited oxygen atoms.
- O 2 ( 3 ⁇ u ⁇ : excited state) ⁇ O ( 3 P: excited state) + O ( 1 D: excited state)
- oxygen molecules in the air absorb ultraviolet rays and become excited oxygen atoms.
- the VUV light (VUV) from the VUV light source 200 that has passed through the mask pattern of the mask M is the SAM film (SAM) on the workpiece W.
- the SAM film is patterned by oxidative decomposition removal reaction or the like of the SAM film with the VUV light in the portion irradiated with VUV light.
- ozone O 3 is generated as shown in FIG.
- the oxidative decomposition reaction between the ozone O 3 and the SAM film is performed in parallel with the oxidative decomposition removal reaction of the SAM film by VUV light (ozone etching OE in FIG. 11). Also occurs. Therefore, the patterning of the SAM film does not necessarily form a desired pattern. That is, problems such as an increase in the etching width and partial defects (etching) of the SAM film occur.
- the present invention provides a vacuum ultraviolet light source device capable of suppressing the amount of ozone generated when vacuum ultraviolet light is irradiated in an atmosphere containing oxygen, in a vacuum ultraviolet light source device that emits light including vacuum ultraviolet light, It is an object of the present invention to provide a light irradiation device equipped with a vacuum ultraviolet light source device and a method for patterning a self-assembled monolayer using the light irradiation device.
- a vacuum ultraviolet light source device that emits light including vacuum ultraviolet light, and the light including the vacuum ultraviolet light is pulsed.
- Light having a light emission duty ratio of 0.00001 or more and 0.01 or less is emitted into an atmosphere containing oxygen.
- the light emission duty ratio may be 0.0001 or more and 0.001 or less.
- a flash lamp having an arc tube made of a vacuum ultraviolet light transmissive material and a pair of electrodes disposed in the arc tube and facing each other, and the flash lamp is powered.
- a power supply unit to be supplied.
- the flash lamp is used as a light source that emits light including vacuum ultraviolet light, light that satisfies the above conditions can be appropriately emitted.
- a distance between the pair of electrodes is 12.5 mm or less, and a gas containing xenon gas may be enclosed in the arc tube. .
- the flash lamp can emit vacuum ultraviolet light having a sufficiently short light emission length to be regarded as a point light source. Therefore, the flash lamp can be used, for example, as a lamp for performing fine patterning using a mask.
- one aspect of the light irradiation apparatus is arranged separately from a work on which a self-assembled monolayer is formed, and a mask on which a predetermined pattern is formed, Any one of the above vacuum ultraviolet light source devices that irradiate light including vacuum ultraviolet light on the workpiece, and an enclosing member that surrounds the optical path of the light from the vacuum ultraviolet light source device to the mask, The inside of the surrounding member is purged with an inert gas, and a gas layer containing oxygen is formed between the mask and the workpiece.
- the vacuum ultraviolet light source device emits light that is pulsed light and has a light emission duty ratio of 0.00001 or more and 0.01 or less as light including vacuum ultraviolet light. Therefore, the amount of ozone generated when oxygen molecules between the mask and the workpiece absorb ultraviolet rays can be suppressed. Therefore, deformation of patterning due to ozone etching can be suppressed and good patterning can be realized. Further, in one aspect of the method for patterning a self-assembled monolayer according to the present invention, vacuum ultraviolet light is applied to a self-assembled monolayer formed on a workpiece through a mask on which a predetermined pattern is formed.
- a method for patterning a self-assembled monolayer film that irradiates light containing light wherein the light containing vacuum ultraviolet light is pulsed light in an atmosphere containing oxygen, and the emission duty ratio is 0.00001 or more and 0 Irradiate light that is .01 or less.
- the patterning process of the SAM film can be performed while suppressing the amount of ozone generated. Therefore, ozone etching can be suppressed and good patterning can be realized.
- the light including the vacuum ultraviolet light may be irradiated with light having a light emission duty ratio of 0.0001 or more and 0.001 or less.
- the SAM film patterning process can be performed in a state in which the ozone generation amount is sufficiently small to cause no practical problem using a light source device that can be realized relatively easily.
- the amount of ozone generated when vacuum ultraviolet light is emitted into an atmosphere containing oxygen such as the atmosphere can be suppressed. Therefore, in the light irradiation device equipped with this vacuum ultraviolet light source device, it is possible to suppress ozone etching caused by the oxidative decomposition reaction between the generated ozone and the SAM film in the patterning process of the SAM film in the atmosphere containing oxygen. And good patterning can be realized.
- FIG. 1 is a diagram showing a spectral distribution of light emitted from an excimer lamp.
- FIG. 2 is a diagram showing the spectral distribution of light emitted from the VUV-SFL.
- FIG. 3 is a diagram showing an example of VUV-SFL.
- FIG. 4 is a diagram showing a change in the contact angle of the SAM film when the light from the excimer lamp is irradiated.
- FIG. 5 is a diagram showing changes in the contact angle of the SAM film when irradiated with VUV-SFL light.
- FIG. 6 is a diagram showing an experimental system for measuring ozone concentration.
- FIG. 7 is a diagram showing the difference in the amount of ozone generated between the excimer lamp and the VUV-SFL.
- FIG. 1 is a diagram showing a spectral distribution of light emitted from an excimer lamp.
- FIG. 2 is a diagram showing the spectral distribution of light emitted from the VUV-SFL
- FIG. 8 is a diagram for explaining the definition of the duty ratio.
- FIG. 9 is a diagram showing the relationship between the duty ratio and the ozone concentration.
- FIG. 10 is a diagram illustrating a configuration example of the light irradiation device.
- FIG. 11 is a diagram showing a SAM film patterning method.
- FIG. 12 is a diagram showing an example of ozone etching.
- VUV light vacuum ultraviolet light
- an excimer lamp that emits VUV light having a center wavelength of 172 nm and a VUV flash lamp (VUV short arc flash lamp: VUV-SFL) having a strong light intensity in the VUV region are used, and VUV from both into the air is used.
- VUV short arc flash lamp: VUV-SFL VUV short arc flash lamp
- the excimer light irradiation unit for irradiating excimer light “Min-Excimer SUS713” manufactured by USHIO INC. Was used.
- the light emission length of the lamp is 100 mm, and the frequency of the power source that supplies power to the lamp is 140 kHz.
- the spectral distribution of the light emitted from this excimer lamp is shown in FIG. In FIG. 1, the horizontal axis represents the wavelength (Wavelength) [nm], and the vertical axis represents the relative intensity (Relative Intensity) [%].
- VUV-SFL the distance between a pair of electrodes arranged in an arc tube (quartz glass tube or the like) made of a vacuum ultraviolet light transmissive material is 12.5 mm or less, and the arc tube is filled with a gas pressure of 3 atm.
- the spectral distribution of light emitted from this VUV-SFL is shown in FIG. In FIG. 2, the horizontal axis represents wavelength [nm], and the vertical axis represents spectral radiation intensity [ ⁇ J / cm 2 ].
- FIG. 2 the structure of VUV-SFL will be described.
- VUV-SFL 11 includes an arc tube 111a.
- a first sealing tube 111b and a second sealing tube 111c are connected to both ends of the arc tube 111a.
- the glass tube 112 for sealing is inserted in the 2nd sealing tube 111c, and both are welded.
- a pair of electrodes (a first main electrode 113a and a second main electrode 113b) are disposed opposite to each other in the arc tube 111a.
- the lead 114a extending from the first main electrode 113a is supported and sealed on the first sealing tube 111b by means such as stepped glass, and is led out to the outside. Further, the lead 114b of the second main electrode 113b is led to the outside by being supported and sealed by means such as a step glass on the sealing glass tube 112.
- a pair of auxiliary start electrodes 115a and 115b are disposed between the main electrodes 113a and 113b in the arc tube 111a.
- the internal lead 116a of the auxiliary start electrode 115a and the external lead 117a of the auxiliary start electrode 115a are electrically connected via the metal foil 118a in the welding region between the second sealing tube 111c and the sealing glass tube 112. It is connected.
- the internal lead 116b of the auxiliary start electrode 115b and the external lead 117b of the auxiliary start electrode 115b are connected via the metal foil 118b in the welding region between the second sealing tube 111c and the sealing glass tube 112. Electrically connected.
- a supporter 119 is provided between the pair of internal leads 116a and 116b, and the supporter 119 is configured to position the starting auxiliary electrodes 115a and 115b.
- the leads 114a and 114b and the external leads 117a and 117b are connected to the power feeding unit 15, respectively.
- the power feeding unit 15 includes a capacitor (not shown) that stores predetermined energy.
- the power supply unit 15 applies a high voltage between the pair of electrodes 113a and 113b by charging the capacitor, and in that state, a high voltage pulse is used as a trigger voltage between the pair of auxiliary start electrodes 115a and 115b. Supply.
- the power feeding unit 15 generates arc discharge between the pair of electrodes 113a and 113b, and causes flash discharge in the arc tube 111a. In this way, pulsed light is emitted outside the arc tube 111a.
- the distance between the pair of electrodes 113a and 113b shown in FIG. 3 is 12.5 mm or less, and the gas containing the xenon gas in the arc tube 111a with the enclosed gas pressure of 3 atm. Is used.
- this VUV-SFL has a sufficiently short emission length so that it can be regarded as a point light source, and can emit light including VUV light having a sufficient intensity.
- the distance between the electrodes is 12.5 mm or less, and a gas containing xenon gas is sealed in the arc tube, and the sealed gas pressure is 2 atm.about.
- the spectral distribution is different between the excimer lamp and the VUV-SFL. Since it is the VUV light in the wavelength region of 200 nm or less that contributes to the patterning of the SAM film, it is necessary to confirm the difference in the amount of ozone generated in the ozone concentration measurement experiment by equalizing the light irradiation amount in this wavelength region. There is.
- the excimer lamp emits only light having a wavelength of 200 nm or less as shown in FIG. 1, but the light emitted by VUV-SFL includes a wavelength component exceeding the wavelength of 200 nm as shown in FIG. . Therefore, in VUV-SFL, the illuminance of light having a wavelength of 200 nm or less cannot be simply measured. Accordingly, the inventors pay attention to the fact that the contact angle of the SAM film changes when the SAM film is irradiated with VUV light having a wavelength region of 200 nm or less, and the contact angle of the SAM film from the start of light irradiation to the SAM film.
- the amount of VUV irradiation occupying the excimer lamp light irradiation amount until the change of the SAM film becomes stable is equal to the amount of VUV-SFL irradiation amount from the start of the light irradiation to the SAM film until the change of the contact angle of the SAM film is stabilized. Assumed. Under this assumption, the illuminance of light having a wavelength of 200 nm or less of VUV-SFL was calculated. Hereinafter, this point will be described.
- FIG. 4 shows the contact of the SAM film when the excimer light is irradiated using the above excimer lamp so that the illuminance on the surface of the SAM film on the workpiece (substrate) is 8.25 mW / cm 2 in the atmosphere. It is a figure which shows the change of an angle
- 1H, 1H, 2H, 2H-perfluorooctyltrimethoxysilane FAS13, manufactured by Wako Pure Chemical Industries, Ltd.
- the change in the contact angle of the SAM film was stabilized by irradiation with light for 75 seconds. Specifically, the contact angle of the SAM film changed from 58 ° to 42 ° and was almost stable.
- FIG. 5 is a diagram showing changes in the contact angle of the SAM film when the SAM film on the workpiece is irradiated with pulsed light from VUV-SFL in the atmosphere.
- the change in the contact angle of the SAM film was stabilized by irradiation with light for 120 seconds. Specifically, the contact angle of the SAM film changed from 58 ° to 33 ° and was almost stable.
- the contact angle when the change in the contact angle is stable is VUV-SFL light. Is different between when the SAM film is irradiated with the light of the excimer lamp.
- VUV wavelength component
- the time until the change of the contact angle of the SAM film is stabilized is 120 seconds for VUV-SFL and 75 seconds for the excimer lamp. Therefore, it is assumed that the amount of irradiation of VUV light having a wavelength of 200 nm or less when irradiated with light of VUV-SFL for 120 seconds is equal to the amount of irradiation of VUV light when irradiated with light from an excimer lamp for 75 seconds.
- VUV-SFL when the above-mentioned VUV-SFL is lit at an input energy of 3.6 J and 10 Hz, if the excimer lamp is lit at an illuminance of 5.16 mW / cm 2 , VUV light with a wavelength of 200 nm or less from both units per unit time It is considered that the dose is equal. Therefore, in the ozone concentration measurement experiment, the ozone concentration generated when the 3.6V input VUV-SFL is turned on at 10 Hz, the center wavelength 172 nm adjusted so that the illuminance is 5.16 mW / cm 2, and the lighting frequency 140 kHz. The ozone concentration generated when the excimer lamp was turned on was measured and an experiment was conducted to compare the two.
- FIG. 6 is a diagram showing an experimental system used in an ozone concentration measurement experiment.
- the lamp 41 is the above-described excimer lamp or VUV-SFL.
- the lamp 41 is housed in a lamp house 42, and light emitted from the lamp 41 is irradiated to the outside from a VUV transmissive window 43 provided in the lamp house 42.
- a flow cell 44 made of a VUV transmissive material is disposed on the light emission side of the lamp 41. Air is introduced into the flow cell 44 from an open end 45 formed at one end thereof, and an ozone meter 46 is connected to the other end of the flow cell 44.
- the thickness of the flow cell 44 is, for example, 1 mm, and the cross-sectional area in FIG. 6 is, for example, 3 mm ⁇ 24 mm.
- ozone meter 46 “EG-2001 RAH035” manufactured by Sugawara Jitsugyo Co., Ltd. was used.
- the gas suction amount of the ozone meter 46 is 1.5 liter / min.
- An aluminum foil having a 1 cm ⁇ 1 cm square opening 47 a was provided as a mask 47 on the light irradiation surface of the flow cell 44. That is, the VUV irradiation area to the air flowing in the flow cell 44 is 1 cm 2 .
- the gap length D from the window portion 43 of the lamp house 42 to the surface of the mask M was set to 2.5 mm, for example. Note that FIG. 6 is exaggerated for easy understanding, and the magnitude relationship does not necessarily reflect an actual experimental system.
- the result is shown in FIG.
- the solid line represents the VUV-SFL ozone concentration measurement result
- the broken line represents the excimer lamp ozone concentration measurement result.
- the ozone concentrations 3 minutes after turning on the VUV-SFL and the excimer lamp were 0.64 ppm and 4.78 ppm, respectively.
- the excimer lamp and the VUV-SFL were turned on so that the dose in the VUV region was the same, the ozone concentration was lower in the pulsed VUV-SFL. In other words, it has been found that the amount of ozone generated is smaller in the pulse lighting VUV-SFL in the atmospheric lighting.
- the ozone concentration reaches a peak after about 30 seconds from the start of lighting, and the ozone concentration gradually decreases thereafter.
- the lighting frequency of the excimer lamp used here is 140 kHz
- the emission interval T of the excimer lamp is 7 ⁇ 10 ⁇ 6 seconds as shown in FIG.
- the horizontal axis represents time
- the vertical axis represents light output (arbitrary unit).
- the light emission interval of VUV-SFL is 0.1 second.
- the excimer lamp and the VUV-SFL have greatly different light emission duty ratios. Therefore, even when the excimer lamp and VUV-SFL are turned on so that the irradiation amount in the VUV region is the same, the case where the VUV-SFL is turned on is compared with the case where the excimer lamp is turned on.
- the amount of ozone concentration generated was investigated using a plurality of lamps having different duty ratios from the lamp (excimer lamp, VUV-SFL).
- the excimer lamp described above is referred to as lamp A, and VUV-SFL is referred to as lamp D.
- the lamps that newly investigated the amount of ozone generated during light emission are the following lamp B and lamp C.
- the lamp B is an excimer lamp that emits VUV having a center wavelength of 172 nm, and the spectral distribution is the same as the spectral distribution of the lamp A shown in FIG.
- the lamp C is a VUV-SFL that emits VUV light having a wavelength of 200 nm or less, and the spectral distribution is the same as the spectral distribution of the lamp D shown in FIG.
- the input energy to the lamp B and the lamp C was adjusted so that the irradiation amounts of the VUV light of the lamp B and the lamp C were the same as those of the lamp A and the lamp D described above.
- the results shown in Table 1 were obtained.
- FIG. 9 is a diagram showing the relationship between the light emission duty ratio and the ozone concentration based on the results shown in Table 1 above. From FIG. 9, when irradiating pulsed light including light in the VUV region in the atmosphere, assuming that the irradiation amount of the VUV region to the air is the same, the amount of ozone generated decreases as the light emission duty ratio decreases. I understood that.
- SAM films (FAS13, manufactured by Wako Pure Chemical Industries, Ltd.) were patterned in the air using the lamps A to D, respectively.
- the so-called ozone etching such as an increase in etching width or partial loss of the SAM film is caused by an oxidative decomposition reaction between the generated ozone and the SAM film, as shown in FIG. OE occurred to the extent that it could not be ignored, and good patterning could not be performed.
- the lamp C and the lamp D since the generated ozone concentration is relatively small, the oxidative decomposition reaction between ozone and the SAM film is small. For example, good patterning is performed as shown in FIG. I was able to.
- the deformation of patterning due to ozone etching was significant when the generated ozone concentration was 4 ppm or more.
- the generated ozone concentration can be surely made smaller than 4 ppm. That is, when patterning a SAM film using VUV light, a light source that emits pulses, such as lamps C and D (VUV-SFL), and has a light emission duty ratio of 0.01 or less is used. Good patterning becomes possible.
- a flash lamp that emits pulses and has a duty ratio of light emission of 0.01 or less and larger than 0 is used.
- the duty ratio of the light emission is set to 0.00001 or more and 0.01 or less.
- the reason why the lower limit of the duty ratio is set to 0.00001 is that when the duty ratio falls below 0.00001, the power supply unit 15 becomes considerably large and impractical to increase the output in one light emission. It is.
- FIG. 10 is a diagram illustrating a configuration example of a light irradiation apparatus that patterns a SAM film using VUV light.
- the light irradiation device 100 includes a vacuum ultraviolet light source device 10 that emits VUV light.
- the vacuum ultraviolet light source device 10 includes a flash lamp 11, a parabolic mirror 12, a lamp housing 13, and a window portion 14 provided in the lamp housing 13.
- the flash lamp 11 is, for example, a VUV-SFL having the configuration shown in FIG. That is, the flash lamp 11 includes an arc tube 111a made of a vacuum ultraviolet light transmissive material, and a pair of electrodes 113a and 113b arranged in the arc tube 111a and facing each other, and the pair of electrodes 113a and 113b.
- the distance between the electrodes is 12.5 mm or less, and a gas containing xenon gas is sealed in the arc tube 111a at a sealed gas pressure of 3 atm.
- the vacuum ultraviolet light source device 10 includes a power feeding unit having the same configuration as the power feeding unit 15 shown in FIG.
- the flash lamp 11 is driven and controlled by the control unit 31 so as to emit light at a duty ratio of 0.00001 or more and 0.01 or less (here, 0.001 for example). That is, the control unit 31 drives and controls the power feeding unit of the vacuum ultraviolet light source device 10, and supplies the flash lamp 11 with charging energy (3.6 J) of a capacitor having a capacity of 20 ⁇ F charged at 600 V. The lamp 11 is turned on at 10 Hz. The VUV light emitted from the flash lamp 11 is reflected by the parabolic mirror 12 to become parallel light, and is emitted from the window portion 14 provided in the lamp housing 13.
- the window portion 14 is made of, for example, synthetic quartz having a high transmittance for VUV light. Note that the window portion 14 may be formed of, for example, sapphire glass, calcium fluoride, magnesium fluoride, or the like, which has better transmittance at a shorter wavelength than quartz.
- the window portion 14 is airtightly assembled with the lamp housing 13, and an inert gas such as nitrogen (N 2 ) gas is introduced into the lamp housing 13 from a gas inlet 13 a provided in the lamp housing 13.
- an inert gas such as nitrogen (N 2 ) gas
- the inside of the lamp housing 13 is purged with an inert gas. This is because VUV undergoes intense absorption attenuation due to oxygen.
- an inert gas such as N 2 gas, absorption attenuation due to oxygen of VUV can be prevented.
- the inert gas introduced into the lamp housing 13 is exhausted from an exhaust port 13 b provided in the lamp housing 13 after cooling the flash lamp 11 and the parabolic mirror 12.
- the inside of the lamp housing 13 may be a vacuum, for example.
- the VUV light emitted from the vacuum ultraviolet light source device 10 enters the mask M.
- the mask M is formed by depositing a metal such as chromium on a transparent substrate such as glass and etching to form a pattern (irradiation pattern), and the workpiece W is irradiated with VUV light through the mask M.
- a metal such as chromium
- a transparent substrate such as glass
- etching to form a pattern
- the workpiece W is irradiated with VUV light through the mask M.
- an enclosing member 21 that surrounds an optical path through which light emitted from the vacuum ultraviolet light source device 10 and incident on the mask M travels is provided.
- the mask M is sucked and held in a horizontal state by a mask stage 22 fixed to the surrounding member 21.
- the inside of the window 14, the surrounding member 21, the mask stage 22, and the mask M of the vacuum ultraviolet light source device 10 is a closed space.
- the surrounding member 21 is provided with a gas introduction port 21a.
- An inert gas such as N 2 gas is introduced from the gas introduction port 21a into the inside of the surrounding member 21 which is a closed space, and the inside of the surrounding member 21 is inert. Oxygen is purged with the gas. This is for the same reason that the oxygen inside the lamp housing 13 is purged by the inert gas. Further, the inert gas introduced into the surrounding member 21 is exhausted from an exhaust port 21 b provided in the surrounding member 21.
- the inside of the surrounding member 21 may be a vacuum, for example.
- the workpiece W is placed on the workpiece stage 23 and is sucked and held on the workpiece stage 23 by, for example, a vacuum chuck mechanism.
- a SAM film (SAM) is formed on the workpiece W, and is disposed about 100 ⁇ m away from the mask M.
- An air layer is formed between the workpiece W and the mask M.
- an enclosing member 24 is provided on the light emitting side of the mask M so as to enclose an optical path through which light passing through the mask M and irradiating the workpiece W travels, and air introduced into the enclosing member 24 is introduced. Air is introduced between the workpiece W and the mask M from the mouth 24a. The air introduced from the air introduction port 24a is exhausted from the exhaust port 24b.
- the space between the mask M and the workpiece W is not limited to the air layer, and a gas layer containing oxygen may be formed.
- the work stage 23 is configured to be movable in the XYZ ⁇ directions (left and right, front and rear, up and down directions in FIG. 10 and the rotation direction around the Z axis) by the stage moving mechanism 32.
- the stage moving mechanism 32 is driven and controlled by the control unit 31.
- the VUV irradiation process of the workpiece W is performed as follows. First, the control unit 31 drives and controls a vacuum chuck mechanism and the like, and holds the mask M set at a predetermined position of the mask stage 22 by vacuum suction. Next, the control unit 31 lowers the work stage 23 by the stage moving mechanism 32 and places the work W on the work stage 23. Then, the control part 31 raises the work stage 23 by the stage moving mechanism 32, and sets the workpiece
- the vacuum ultraviolet light source device 10 irradiates the mask M with VUV light that is parallel light, and performs an optical patterning process on the SAM film on the workpiece W.
- the control unit 31 lowers the work stage 23 by the stage moving mechanism 32, stops supplying the vacuum to the work stage 23, and can take out the irradiated work W from the work stage 23.
- the mask M on which a pattern is formed is prepared, the mask M and the workpiece W are arranged close to each other in parallel, and the characteristics of the workpiece W are to be changed through the mask M. Only the portion is irradiated with parallel VUV light. Thus, the optical patterning process with respect to the workpiece
- work W is performed.
- the light irradiation apparatus 100 irradiates the workpiece W with VUV light in an atmosphere containing oxygen such as the atmosphere. Therefore, when the SAM film is irradiated with VUV light, oxygen near the surface of the SAM film becomes active oxygen due to VUV irradiation, and the oxidative decomposition reaction between the active oxygen and the SAM film is performed together with the direct decomposition of the SAM film by the VUV light. be able to. As a result, the patterning rate can be improved as compared with the case where the oxidative decomposition reaction by active oxygen is not performed as in the case of VUV irradiation to the SAM film in an inert gas atmosphere not containing oxygen.
- the vacuum ultraviolet light source device 10 emits light having a duty ratio of emission of 0.01 or less, which is pulsed light as VUV light applied to the workpiece W.
- atmosphere absorbs VUV can be suppressed.
- the generated ozone concentration can be made sufficiently small to cause no practical problem under the light emission conditions that can be realized relatively easily. . Therefore, deformation of patterning due to ozone etching can be suppressed and good patterning can be realized.
- the flash lamp 11 is applied as a light source that emits light that is pulsed light and has a light emission duty ratio of 0.01 or less, VUV light that satisfies the above conditions can be appropriately emitted. Further, as the flash lamp 11, a lamp having a light emission length (distance between electrodes) of 12.5 mm or less and a gas containing xenon gas sealed in the arc tube is applied. In this way, by using a light source that can be regarded as a substantially point light source, it is possible to perform exposure with less light wraparound. Therefore, the pattern line width can be reduced.
- the light irradiation apparatus 100 when the uniformity of the illumination distribution of VUV light irradiated to the workpiece
- the parabolic mirror 12 in the vacuum ultraviolet light source device 10 is an elliptical condensing mirror, and the light emitting part of the flash lamp 11 is arranged at the first focal point of the elliptical condensing mirror.
- an integrator is arranged at the second focal point where the light emitted from the window portion 14 is collected, and the light from the integrator is collimated by a collimator lens or a collimator mirror and is applied to the mask M.
- the integrator, the collimator lens, or the collimator mirror is on the optical path along which the light emitted from the vacuum ultraviolet light source device 10 and irradiated onto the workpiece W travels, so that they are made of a material having good light transmittance in the VUV region. These need to be accommodated in the surrounding member 21 as well.
- the vacuum ultraviolet light source device is useful because it can suppress the amount of ozone generated when vacuum ultraviolet light is emitted into an atmosphere containing oxygen such as the atmosphere. Moreover, in the light irradiation apparatus equipped with this vacuum ultraviolet light source device, it is possible to suppress ozone etching caused by the oxidative decomposition reaction between the generated ozone and the SAM film in the patterning process of the SAM film in an atmosphere containing oxygen. This is useful because good patterning can be realized.
- SYMBOLS 10 Vacuum ultraviolet light source device, 11 ... Flash lamp (VUV-SFL), 12 ... Parabolic mirror, 13 ... Lamp housing, 14 ... Window part, 15 ... Feeding part, 21 ... Enclosing member, 21a ... Gas inlet 21b ... exhaust port, 22 ... mask stage, 23 ... work stage, 24 ... enclosure member, 24a ... air inlet, 24b ... exhaust port, 31 ... control unit, 32 ... stage moving mechanism, 41 ... lamp, 42 ... lamp House, 43 ... window, 44 ... flow cell, 45 ... open end, 46 ... ozone meter, 47 ... mask, 47a ... opening, 111a ... arc tube, 111b ...
- first sealing tube 111c ... second sealing tube, 112 ... Glass tube for sealing, 113a ... First main electrode, 113b ... Second main electrode, 114a ... Lead, 114b ... Lead, 115a, 115b ... Start auxiliary electrode, 116a, 16b ... inner lead, 117a, 117b ... external leads, 118a, 118b ... metal foil, 119 ... supporter, M ... mask, SAM ... self-assembled monolayer (SAM membrane), W ... workpiece
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Electromagnetism (AREA)
- Plasma & Fusion (AREA)
- Health & Medical Sciences (AREA)
- Public Health (AREA)
- Epidemiology (AREA)
- Optics & Photonics (AREA)
- Computer Hardware Design (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Power Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Condensed Matter Physics & Semiconductors (AREA)
- Chemical & Material Sciences (AREA)
- Atmospheric Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Environmental & Geological Engineering (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Organic Chemistry (AREA)
- Toxicology (AREA)
- General Health & Medical Sciences (AREA)
- Exposure And Positioning Against Photoresist Photosensitive Materials (AREA)
- Physical Or Chemical Processes And Apparatus (AREA)
- Exposure Of Semiconductors, Excluding Electron Or Ion Beam Exposure (AREA)
Abstract
Description
例えば、非特許文献1には、VUV光を用いて、特定の官能基には依存しないSAM膜の光パターニング処理が可能であることが開示されている。具体的には、有機物からなる汚染物質を除去するのに使用される波長172nmのエキシマランプを露光用光源として用いている。SAM膜のVUV光による酸化分解除去反応に着目した方法であり、多種多様なSAM膜の光マイクロ加工への展開が期待できる。
真空紫外光光源(以下、「VUV光源」ともいう。)としては、従来、波長185nmに輝線を有する低圧水銀ランプが使用されてきた。一方、VUV光において特に波長180nm以下の波長域の光は、高速な表面改質(例えば、アッシング)などが実現可能であることが知られている。そこで、近年では、波長172nmの光を放出するキセノンエキシマランプがVUV光源として用いられる例が多い。
このようなVUVランプから放出されるVUV光は、発光領域の形状が略円柱状であるため発散光となる。発散光の場合、投影露光を行うことは難しく、コンタクト露光やプロキシミティ露光を行うことになる。この場合、被照射物への露光は、発散光の回り込みの影響で、解像可能なパターンサイズは、ラインパターン幅にして100μm程度が限界となる。
これに対して、大気等の酸素を含む処理雰囲気中においてSAM膜にVUV光を照射すると、SAM膜表面近傍の酸素がVUV照射により活性酸素となり、VUV光によるSAM膜の直接分解とともに、上記の活性酸素とSAM膜との酸化分解反応も行わせることができる。そして、この活性酸素による酸化分解反応の存在が、SAM膜のパターニングレートを向上させる要因となる。そのため、パターニングレートを確保するためには、大気中でVUVによるSAM膜のパターニングを行うことが好ましい。
ところが、大気中にて、波長200nm以下のVUV光を用いたワークの光照射処理を行う場合、光照射表面や、当該表面を含む空間中においてオゾンが発生する。
まず、空気中の酸素分子が紫外線を吸収し励起状態となる。
O2(3Σg -:基底状態)+hν → O2(3Σu -:励起状態) ………(1)
次に、励起状態の酸素分子が、励起状態の酸素原子となる。
O2(3Σu -:励起状態) → O(3P:励起状態)+O(1D:励起状態) ………(2)
あるいは、空気中の酸素分子が紫外線を吸収し、励起状態の酸素原子となる。
O2(3Σg -:基底状態)+hν → O(1D:励起状態)+O(1D:励起状態) ………(3)
そして、励起状態の酸素原子O(1D:励起状態)と、酸素分子と、周囲媒体M(窒素分子など)との三体衝突によりオゾンが生成される。
O(1D)+O2 +M → O3 ………(4)
しかしながら、大気中でのVUV照射の場合、実際には、例えば図12に示すようにオゾンO3が生成する。生成されたオゾンO3の寿命は数十秒に及ぶため、SAM膜のVUV光による酸化分解除去反応と並行して、オゾンO3とSAM膜との酸化分解反応(図11におけるオゾンエッチングOE)も発生する。そのため、SAM膜のパターニングは必ずしも所望なパターンが形成されるわけではない。すなわち、エッチング幅の拡大やSAM膜の部分的欠損(エッチング)が発生するといった不具合が生じる。
そこで、本発明は、真空紫外光を含む光を放出する真空紫外光光源装置において、酸素を含む雰囲気中に真空紫外光を照射した際のオゾン発生量を抑制可能な真空紫外光光源装置、その真空紫外光光源装置を搭載した光照射装置、及びその光照射装置を用いた自己組織化単分子膜のパターニング方法を提供することを課題としている。
また、本発明の他の態様によれば、前記発光のデューティ比が0.0001以上0.001以下であってもよい。これにより、比較的容易に実現可能な発光条件で、オゾン発生量を実用上問題のない程度に十分小さくすることができる。
また、本発明の他の態様によれば、前記フラッシュランプは、前記一対の電極の電極間距離が12.5mm以下であって、前記発光管内にキセノンガスを含むガスが封入されていてもよい。これにより、フラッシュランプは、点光源をみなせる程度に十分発光長が短い真空紫外光を放出することができる。したがって、当該フラッシュランプは、例えば、マスクを用いた微細なパターニングを行うためのランプとして用いることができる。
このように、光源装置からマスクまでの光路を包囲する包囲部材の内部の酸素を不活性ガスによりパージするので、酸素による真空紫外光の吸収減衰を防止することができる。また、マスクからワークまでの間に、酸素を含む気体層を形成するので、酸素を含む雰囲気中で真空紫外光による自己組織化単分子膜(SAM膜)のパターニング処理を行うことができる。そのため、SAM膜に真空紫外光が照射された際に、SAM膜表面近傍の酸素が活性酸素となり、当該活性酸素とSAM膜との酸化分解反応を行わせることができる。これにより、SAM膜のパターニングレートを向上させることができる。
また、本発明に係る自己組織化単分子膜のパターニング方法の一態様は、ワーク上に形成された自己組織化単分子膜に対し、所定のパターンが形成されたマスクを介して真空紫外光を含む光を照射する自己組織化単分子膜のパターニング方法であって、酸素を含む雰囲気中において、前記真空紫外光を含む光として、パルス光であり、且つ発光のデューティ比が0.00001以上0.01以下である光を照射する。
さらに、上記の自己組織化単分子膜のパターニング方法において、前記真空紫外光を含む光として、前記発光のデューティ比が0.0001以上0.001以下である光を照射してもよい。これにより、比較的容易に実現可能な光源装置を用いてオゾン発生量を実用上問題のない程度に十分小さくした状態で、SAM膜のパターニング処理を行うことができる。
上記した本発明の目的、態様及び効果並びに上記されなかった本発明の目的、態様及び効果は、当業者であれば添付図面及び請求の範囲の記載を参照することにより下記の発明を実施するための形態(発明の詳細な説明)から理解できるであろう。
本発明者らは、大気等の処理雰囲気中の酸素分子が真空紫外光(VUV光)を吸収することにより生成されるオゾンの生成量を調査するために、以下のオゾン濃度測定実験を行った。
具体的には、中心波長172nmのVUV光を放出するエキシマランプと、VUV領域の光強度が強いVUVフラッシュランプ(VUVショートアークフラッシュランプ:VUV-SFL)とを用い、両者から空気中へのVUV光の積算照射量を同一としたときのオゾン発生量をそれぞれ調査した。
エキシマ光を照射するエキシマ光照射ユニットとしては、ウシオ電機株式会社製「Min-Excimer SUS713」を用いた。ランプの発光長は100mmであり、ランプに電力を供給する電源の周波数は140kHzである。このエキシマランプから放出される光のスペクトル分布を図1に示す。なお、図1において、横軸は波長(Wavelength)[nm]、縦軸は相対強度(Relative Intensity)[%]である。
ここで、VUV-SFLの構造について説明する。
図3は、VUV-SFLの一例として、ダブルエンド型ショートアークフラッシュランプの構造を示す図である。
図3に示すように、VUV-SFL11は、発光管111aを備える。発光管111aの両端には第一封止管111bと第二封止管111cとが連設されている。また、第二封止管111cには封止用ガラス管112が挿入されており、両者は溶着されている。
また、発光管111a内の主電極113a及び113bの間には、一対の始動補助電極115a及び115bが配設されている。始動補助電極115aの内部リード116aと始動補助電極115aの外部リード117aとは、第二封止管111cと封止用ガラス管112との間の溶着領域において、金属箔118aを介して電気的に接続されている。同様に、始動補助電極115bの内部リード116bと始動補助電極115bの外部リード117bとは、第二封止管111cと封止用ガラス管112との間の溶着領域において、金属箔118bを介して電気的に接続されている。
リード114a,114b及び外部リード117a,117bは、それぞれ給電部15に接続されている。給電部15は、所定のエネルギーを蓄えるコンデンサ(不図示)を有する。給電部15は、当該コンデンサを充電することで一対の電極113aと113bとの間に高電圧を印加すると共に、その状態で一対の始動補助電極115aと115bとの間にトリガ電圧として高電圧パルスを供給する。これにより、給電部15は、一対の電極113a,113b間にアーク放電を発生させ、発光管111a内で閃光放電を生じさせる。このようにして、発光管111a外部にパルス光が放出される。
なお、光強度の強いVUV光を放出するVUV-SFLとしては、電極間距離が12.5mm以下であって、発光管内にキセノンガスを含むガスが封入されており、当該封入ガス圧力が2atm~8atmのものを適用することができる。
図1及び図2に示す通り、エキシマランプとVUV-SFLとでは、スペクトル分布が異なる。SAM膜のパターニングに寄与するのは、波長領域200nm以下のVUV光であるため、オゾン濃度測定実験では、この波長領域での光の照射量を等しくして、オゾン発生量の差異を確認する必要がある。
そこで、本発明者らは、波長領域200nm以下のVUV光がSAM膜に照射されると、SAM膜の接触角が変化することに着目し、SAM膜への光照射開始からSAM膜の接触角の変化が安定するまでのエキシマランプの光照射量に占めるVUVの照射量が、SAM膜への光照射開始からSAM膜の接触角の変化が安定するまでのVUV-SFLの照射量と等しいと仮定した。そして、この仮定の下、VUV-SFLの波長200nm以下の光の照度を算出した。以下、この点について説明する。
エキシマランプにおけるSAM膜の接触角の変化が安定するまでの間の照射量は、75s×8.25mW/cm2=618.25mJ/cm2である。よって、VUV-SFLのSAM膜上での波長200nm以下の光の照度は、エキシマランプの照度に換算すると、75s/120s×8.25mW/cm2=5.16mW/cm2相当となる。
そこで、オゾン濃度測定実験では、3.6J入力のVUV-SFLを10Hzで点灯した際に発生するオゾン濃度と、照度が5.16mW/cm2となるように調整した中心波長172nm、点灯周波数140kHzのエキシマランプを点灯した際に発生するオゾン濃度とを測定し、両者を比較する実験を行った。
ランプ41は、上記のエキシマランプ、またはVUV-SFLである。当該ランプ41はランプハウス42内に収容されており、当該ランプ41から放出される光は、ランプハウス42に設けたVUV透過性の窓部43より外部に照射される。
また、ランプ41の光出射側には、VUV透過性材料からなるフローセル44を配置する。当該フローセル44の内部には、その一端に形成された開放端45から空気が導入され、フローセル44の他端にはオゾンメータ46が接続されている。フローセル44の肉厚は、例えば1mm、図6における断面積は、例えば3mm×24mmである。
フローセル44の光照射面には、1cm×1cm角の開口47aを有するアルミニウム箔をマスク47として設けた。すなわち、フローセル44内を流れる空気へのVUV照射面積は1cm2となる。ランプハウス42の窓部43からマスクM表面までのギャップ長さDは、例えば2.5mmとした。
なお、図6は理解を容易にするために誇張して描いており、大小関係は必ずしも実際の実験系を反映したものではない。
図7において、実線がVUV-SFLのオゾン濃度測定結果であり、破線がエキシマランプのオゾン濃度測定結果である。
この図7に示すように、VUV-SFL及びエキシマランプを点灯してから3分後のオゾン濃度は、それぞれ0.64ppm、4.78ppmであった。このように、VUV領域の照射量が同一となるようにエキシマランプ及びVUV-SFLを点灯したにもかかわらず、パルス点灯のVUV-SFLの方が、オゾン濃度が小さくなった。すなわち、大気中点灯において、パルス点灯のVUV-SFLの方がオゾン生成量は小さくなることが判明した。
ここで使用したエキシマランプの点灯周波数は140kHzであるので、図8に示すように、当該エキシマランプの発光間隔Tは7×10-6秒である。なお、図8において、横軸は時間であり、縦軸は光出力(任意単位)である。また、発光パルス幅tpは、FWHM(半値全幅)で約2μsである。したがって、エキシマランプの発光のデューティ比(=発光パルス幅tp/発光間隔T)は、
2×10-6/7×10-6=0.29(29%)
となる。
1×10-5/0.1=1×10-4(0.01%)
となる。
このように、エキシマランプとVUV-SFLとでは、発光のデューティ比が大幅に相違する。このことから、VUV領域の照射量が同一となるようにエキシマランプ及びVUV-SFLを点灯したにもかかわらず、VUV-SFLを点灯させたときの方が、エキシマランプを点灯させたときと比較してオゾン濃度が小さいのは、両者の発光のデューティが大幅に相違することが一因なのではないかと推察される。
すなわち、発光のデューティ比が小さい方が、励起状態の酸素原子O(1D:励起状態)と、酸素分子と、周囲媒体(窒素分子など)との三体衝突によるオゾン生成反応が起こりにくいものと推察される。
新たに発光時のオゾン発生量を調査したランプは、以下のランプB及びランプCである。
ランプBは、中心波長172nmのVUVを放出するエキシマランプであり、スペクトル分布は、図1に示すランプAのスペクトル分布と同じである。点灯周波数は20kHz、発光パルス幅はFWHMで約2μsとした。
このランプBの発光間隔は5×10-5秒であるので、当該ランプBの発光のデューティ比は、
2×10-6/5×10-5=0.04(4%)
である。
このランプCの発光間隔は0.01秒であるので、当該ランプCの発光のデューティ比は、
1×10-6/0.01=0.001(0.1%)
である。
なお、ここでは、ランプB及びランプCのVUV光の照射量が、上記したランプA及びランプDと同じになるように、ランプB及びランプCへの投入エネルギーを調整した。
各ランプA~Dを点灯してから3分間経過後に発生しているオゾン濃度を測定したところ、表1に示す結果が得られた。
図9は、上記表1に示す結果をもとに、発光デューティ比とオゾン濃度との関係を示した図である。
この図9より、大気中においてVUV領域の光を含むパルス光を照射する場合、空気に対するVUV領域の照射量が同一であるとすると、発光のデューティ比が小さいほど、オゾンの発生量が少なくなることが分かった。
図9に示すように、発光のデューティ比が0.01以下である場合、発生オゾン濃度を確実に4ppmよりも小さくすることができる。すなわち、VUV光を使用してSAM膜をパターニングする場合、ランプC及びD(VUV-SFL)のようにパルス発光し、且つ発光のデューティ比が0.01以下である光源を用いることで、精度のよいパターニングが可能となる。
図10は、VUV光を使用してSAM膜をパターニングする光照射装置の構成例を示す図である。
光照射装置100は、VUV光を放射する真空紫外光光源装置10を備える。真空紫外光光源装置10は、フラッシュランプ11と、放物面ミラー12と、ランプハウジング13と、ランプハウジング13に設けられた窓部14とを備える。
なお、図10では特に図示しないが、真空紫外光光源装置10は、図3に示す給電部15と同様の構成を有する給電部を備える。
フラッシュランプ11から放出されたVUV光は、放物面ミラー12によって反射されて平行光となり、ランプハウジング13に設けられた窓部14から出射する。窓部14は、例えば、VUV光に対して高い透過率を有する合成石英で形成する。なお、窓部14は、例えば、石英より短波長の透過率が良いサファイアガラスやフッ化カルシウム、フッ化マグネシウム等により形成されていてもよい。
なお、ランプハウジング13内部は、例えば真空であってもよい。
真空紫外光光源装置10の光出射側には、真空紫外光光源装置10から放出されマスクMに入射される光が進行する光路を包囲する包囲部材21が設けられている。マスクMは、包囲部材21に固定されたマスクステージ22によって水平状態を保って吸着保持されている。
なお、包囲部材21内部は、例えば真空であってもよい。
具体的には、マスクMの光出射側に、マスクMを通過しワークWに照射される光が進行する光路を包囲する包囲部材24が設けられており、包囲部材24に形成された空気導入口24aからワークWとマスクMとの間に空気が導入されている。空気導入口24aから導入された空気は、排気口24bから排気される。なお、マスクMとワークWとの間は空気層に限定されるものではなく、酸素を含む気体層が形成されていればよい。
また、ワークステージ23は、ステージ移動機構32によってXYZθ方向(図10の左右、前後、上下方向、およびZ軸を中心とした回転方向)に移動可能に構成されている。ステージ移動機構32は、制御部31によって駆動制御される。
まず、制御部31は、真空チャック機構等を駆動制御し、マスクステージ22の所定の位置にセットされたマスクMを真空吸着により保持する。次に、制御部31はステージ移動機構32によりワークステージ23を下降し、ワークWをワークステージ23上に載置させる。その後、制御部31は、ステージ移動機構32によりワークステージ23を上昇し、ワークWを所定のVUV光照射位置にセットする。次に、制御部31は、ステージ移動機構32によりワークステージ23をXYθ方向に移動し、マスクMとワークWとの位置合わせ(アライメント)を行う。すなわち、マスクM上に印されたアライメント・マークとワークW上に印されたアライメント・マークを一致させる。
以上のように、本実施形態における光照射装置100では、パターンを形成したマスクMを用意し、マスクMとワークWを近接して平行に配置し、該マスクMを通してワークWの特性を変えたい部分のみに平行光のVUV光を照射する。このようにして、ワークWに対する光パターニング処理を行う。
また、フラッシュランプ11としては、発光長(電極間距離)が12.5mm以下であり、発光管内にキセノンガスを含むガスが封入されているものを適用する。このように、略点光源とみなせる光源を用いることで、光の回り込みが少ない露光を行うことができる。したがって、パターン線幅の微細化を実現することができる。
上記実施形態においては、ワークWに照射されるVUV光の照度分布の均一性が求められる場合、例えば、光照射装置100を以下のように構成してもよい。
真空紫外光光源装置10における放物面ミラー12を楕円集光ミラーとし、当該楕円集光ミラーの第1焦点にフラッシュランプ11の発光部を配置する。また、窓部14から放出される光が集光される第2焦点にインテグレータを配置し、インテグレータからの光をコリメータレンズもしくはコリメータミラーで平行光にしてマスクMに照射する。
なお、インテグレータやコリメータレンズもしくはコリメータミラーは、真空紫外光光源装置10から放出されワークWに照射される光が進行する光路上にあるので、これらはVUV領域の光透過性の良い材料で構成する必要があるとともに、これらも包囲部材21の内部に収容される。
Claims (7)
- 真空紫外光を含む光を放出する真空紫外光光源装置であって、
前記真空紫外光を含む光として、パルス光であり、且つ発光のデューティ比が0.00001以上0.01以下である光を、酸素を含む雰囲気中に放出することを特徴とする真空紫外光光源装置。 - 前記発光のデューティ比が0.0001以上0.001以下であることを特徴とする請求項1に記載の真空紫外光光源装置。
- 真空紫外光透過性材料からなる発光管と、該発光管内に配置された互いに対向する一対の電極とを有するフラッシュランプと、
前記フラッシュランプに電力を供給する給電部と、を備えることを特徴とする請求項1又は2に記載の真空紫外光光源装置。 - 前記フラッシュランプは、前記一対の電極の電極間距離が12.5mm以下であって、前記発光管内にキセノンガスを含むガスが封入されていることを特徴とする請求項3に記載の真空紫外光光源装置。
- 自己組織化単分子膜が形成されたワークに対して離間して配置され、所定のパターンが形成されたマスクと、
前記マスクを介して、前記ワーク上に真空紫外光を含む光を照射する前記請求項1~4のいずれか1項に記載の真空紫外光光源装置と、
前記真空紫外光光源装置から前記マスクまでの前記光の光路を包囲する包囲部材と、を備え、
前記包囲部材の内部は不活性ガスによりパージされており、
前記マスクと前記ワークとの間には酸素を含む気体層が形成されていることを特徴とする光照射装置。 - ワーク上に形成された自己組織化単分子膜に対し、所定のパターンが形成されたマスクを介して真空紫外光を含む光を照射する自己組織化単分子膜のパターニング方法であって、
酸素を含む雰囲気中において、前記真空紫外光を含む光として、パルス光であり、且つ発光のデューティ比が0.00001以上0.01以下である光を照射することを特徴とする自己組織化単分子膜のパターニング方法。 - 前記真空紫外光を含む光として、前記発光のデューティ比が0.0001以上0.001以下である光を照射することを特徴とする請求項6に記載の自己組織化単分子膜のパターニング方法。
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
KR1020177001194A KR101899266B1 (ko) | 2014-07-17 | 2015-07-09 | 자기 조직화 단분자막의 패터닝 장치, 광 조사 장치, 및 자기 조직화 단분자막의 패터닝 방법 |
CN201580038998.7A CN106537553B (zh) | 2014-07-17 | 2015-07-09 | 自组装单分子膜的图案化装置、光照射装置、以及自组装单分子膜的图案化方法 |
US15/326,207 US10061197B2 (en) | 2014-07-17 | 2015-07-09 | Light irradiation device and method for patterning self assembled monolayer |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2014146959A JP6241384B2 (ja) | 2014-07-17 | 2014-07-17 | 自己組織化単分子膜のパターニング装置、光照射装置及び自己組織化単分子膜のパターニング方法 |
JP2014-146959 | 2014-07-17 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2016009624A1 true WO2016009624A1 (ja) | 2016-01-21 |
Family
ID=55078133
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/JP2015/003467 WO2016009624A1 (ja) | 2014-07-17 | 2015-07-09 | 真空紫外光光源装置、光照射装置、及び自己組織化単分子膜のパターニング方法 |
Country Status (5)
Country | Link |
---|---|
US (1) | US10061197B2 (ja) |
JP (1) | JP6241384B2 (ja) |
KR (1) | KR101899266B1 (ja) |
CN (1) | CN106537553B (ja) |
WO (1) | WO2016009624A1 (ja) |
Families Citing this family (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP6683578B2 (ja) | 2016-09-23 | 2020-04-22 | 株式会社Screenホールディングス | 基板処理方法 |
WO2018170604A1 (en) * | 2017-03-23 | 2018-09-27 | Barry Hunt | Systems and apparratus for ultraviolet light disinfection |
WO2019055823A1 (en) * | 2017-09-18 | 2019-03-21 | Innovent Technologies, Llc | APPARATUS AND METHODS FOR PREVENTING BIOLOGICAL ENCRYPTION |
JP7157430B2 (ja) * | 2017-11-24 | 2022-10-20 | 株式会社Kjtd | 探傷装置 |
JP7006793B2 (ja) | 2018-08-01 | 2022-02-10 | 株式会社ニコン | ミスト成膜装置、並びにミスト成膜方法 |
CN112441563A (zh) * | 2020-08-21 | 2021-03-05 | 郑州圣华药物食品技术开发有限公司 | 集中传输式氙准分子光源臭氧发生器 |
CN117369217A (zh) * | 2022-06-30 | 2024-01-09 | 上海微电子装备(集团)股份有限公司 | 光刻机、用于照明灯室的防污染装置及其设计方法 |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2011258415A (ja) * | 2010-06-09 | 2011-12-22 | Iwasaki Electric Co Ltd | キセノンフラッシュランプ点灯装置 |
JP5056538B2 (ja) * | 2008-03-31 | 2012-10-24 | 大日本印刷株式会社 | 真空紫外光によるパターン形成体の製造方法 |
JP2013143253A (ja) * | 2012-01-11 | 2013-07-22 | Ushio Inc | 光源装置 |
Family Cites Families (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP3315843B2 (ja) * | 1995-09-01 | 2002-08-19 | 大日本スクリーン製造株式会社 | 基板処理装置 |
US6052401A (en) * | 1996-06-12 | 2000-04-18 | Rutgers, The State University | Electron beam irradiation of gases and light source using the same |
US6965624B2 (en) * | 1999-03-17 | 2005-11-15 | Lambda Physik Ag | Laser gas replenishment method |
US6901090B1 (en) * | 1999-09-10 | 2005-05-31 | Nikon Corporation | Exposure apparatus with laser device |
JP2005159322A (ja) * | 2003-10-31 | 2005-06-16 | Nikon Corp | 定盤、ステージ装置及び露光装置並びに露光方法 |
US7468779B2 (en) * | 2005-06-28 | 2008-12-23 | Asml Netherlands B.V. | Lithographic apparatus and device manufacturing method |
DE102011086949A1 (de) * | 2011-11-23 | 2013-05-23 | Carl Zeiss Smt Gmbh | Beleuchtungs- und Verlagerungsvorrichtung für eine Projektionsbelichtungsanlage |
-
2014
- 2014-07-17 JP JP2014146959A patent/JP6241384B2/ja active Active
-
2015
- 2015-07-09 US US15/326,207 patent/US10061197B2/en active Active
- 2015-07-09 WO PCT/JP2015/003467 patent/WO2016009624A1/ja active Application Filing
- 2015-07-09 KR KR1020177001194A patent/KR101899266B1/ko active IP Right Grant
- 2015-07-09 CN CN201580038998.7A patent/CN106537553B/zh active Active
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP5056538B2 (ja) * | 2008-03-31 | 2012-10-24 | 大日本印刷株式会社 | 真空紫外光によるパターン形成体の製造方法 |
JP2011258415A (ja) * | 2010-06-09 | 2011-12-22 | Iwasaki Electric Co Ltd | キセノンフラッシュランプ点灯装置 |
JP2013143253A (ja) * | 2012-01-11 | 2013-07-22 | Ushio Inc | 光源装置 |
Also Published As
Publication number | Publication date |
---|---|
US10061197B2 (en) | 2018-08-28 |
JP2016024904A (ja) | 2016-02-08 |
KR20170020454A (ko) | 2017-02-22 |
KR101899266B1 (ko) | 2018-09-14 |
CN106537553B (zh) | 2018-09-28 |
CN106537553A (zh) | 2017-03-22 |
JP6241384B2 (ja) | 2017-12-06 |
US20170199463A1 (en) | 2017-07-13 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
JP6241384B2 (ja) | 自己組織化単分子膜のパターニング装置、光照射装置及び自己組織化単分子膜のパターニング方法 | |
JP6217146B2 (ja) | 光源装置およびこの光源装置を搭載した光照射装置並びにこの光照射装置を用いた自己組織化単分子膜のパターンニング方法 | |
JP6197641B2 (ja) | 真空紫外光照射処理装置 | |
US7518787B2 (en) | Drive laser for EUV light source | |
KR101396158B1 (ko) | Euv 램프 및 연질 x-선 램프의 전환 효율을 증가시키는 방법, 및 euv 방사선 및 연질 x-선을 생성하는 장치 | |
US20100051827A1 (en) | Method of cleaning optical surfaces of an irradiation unit in a two-step process | |
JP2010170994A (ja) | 光源装置 | |
JP2016215183A (ja) | 紫外光照射装置 | |
JP2705023B2 (ja) | 被処理物の酸化方法 | |
JP2009268974A (ja) | 紫外線照射方法及び紫外線照射装置 | |
JP4963149B2 (ja) | 光源装置及びそれを用いた露光装置 | |
WO2016208110A1 (ja) | 光処理装置および光処理方法 | |
NL2021897A (en) | Cleaning a surface of an optic within a chamber of an extreme ultraviolet light source | |
JP2005519738A (ja) | 光学表面の汚染除去を行う方法及び装置 | |
JP2001185089A (ja) | エキシマ照射装置 | |
JP2008052916A (ja) | 紫外線照射装置 | |
JP2010010283A (ja) | オゾンガス利用表面処理方法とその装置 | |
JP2021148820A (ja) | チャンバ装置、極端紫外光生成装置、及び電子デバイスの製造方法 | |
JP2018155982A (ja) | 光照射装置及びこれを備えた露光装置 | |
WO2019021651A1 (ja) | 露光装置 | |
WO2018042888A1 (ja) | レーザ駆動ランプ | |
KR101374022B1 (ko) | 엑시머 램프 | |
JP2004267951A (ja) | 洗浄装置および洗浄方法 | |
TW201802575A (zh) | 表面處理方法及遮罩以及表面處理裝置 | |
JP5474891B2 (ja) | 光源装置及びそれを用いた露光装置 |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
121 | Ep: the epo has been informed by wipo that ep was designated in this application |
Ref document number: 15822561 Country of ref document: EP Kind code of ref document: A1 |
|
ENP | Entry into the national phase |
Ref document number: 20177001194 Country of ref document: KR Kind code of ref document: A |
|
WWE | Wipo information: entry into national phase |
Ref document number: 15326207 Country of ref document: US |
|
NENP | Non-entry into the national phase |
Ref country code: DE |
|
122 | Ep: pct application non-entry in european phase |
Ref document number: 15822561 Country of ref document: EP Kind code of ref document: A1 |