WO2023149669A1 - 포토레지스트 조성물 - Google Patents
포토레지스트 조성물 Download PDFInfo
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- WO2023149669A1 WO2023149669A1 PCT/KR2023/000098 KR2023000098W WO2023149669A1 WO 2023149669 A1 WO2023149669 A1 WO 2023149669A1 KR 2023000098 W KR2023000098 W KR 2023000098W WO 2023149669 A1 WO2023149669 A1 WO 2023149669A1
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- photoresist composition
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- 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
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- 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
- G03F7/004—Photosensitive materials
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- 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
- G03F7/004—Photosensitive materials
- G03F7/0042—Photosensitive materials with inorganic or organometallic light-sensitive compounds not otherwise provided for, e.g. inorganic resists
-
- 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
- G03F7/004—Photosensitive materials
- G03F7/0042—Photosensitive materials with inorganic or organometallic light-sensitive compounds not otherwise provided for, e.g. inorganic resists
- G03F7/0043—Chalcogenides; Silicon, germanium, arsenic or derivatives thereof; Metals, oxides or alloys thereof
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- 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
- G03F7/004—Photosensitive materials
- G03F7/0048—Photosensitive materials characterised by the solvents or agents facilitating spreading, e.g. tensio-active agents
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- 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
- G03F7/004—Photosensitive materials
- G03F7/039—Macromolecular compounds which are photodegradable, e.g. positive electron resists
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- 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
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- 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
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- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10P—GENERIC PROCESSES OR APPARATUS FOR THE MANUFACTURE OR TREATMENT OF DEVICES COVERED BY CLASS H10
- H10P50/00—Etching of wafers, substrates or parts of devices
- H10P50/69—Etching of wafers, substrates or parts of devices using masks for semiconductor materials
- H10P50/691—Etching of wafers, substrates or parts of devices using masks for semiconductor materials for Group IV materials or Group III-V materials
Definitions
- the present application relates to photoresist compositions.
- next-generation light source technologies such as 13.5 nm EUV (Extreme Ultraviolet) and 6.5 nm BEUV (Beyond Extreme Ultraviolet), which have shorter wavelengths than 193 nm-based DUV (Deep Ultraviolet), to make a technological leap to realize a node of several nanometers.
- EUV Extreme Ultraviolet
- BEUV Beyond Extreme Ultraviolet
- 193 nm-based DUV Deep Ultraviolet
- CAR Chemically Amplified Resist
- PAG photoacid generator
- acid is generated and amplified when exposed to light with a wavelength of 248 nm and 193 nm, and the structure of the polymer is changed by the generated acid. Solubility changes as it is broken or cross-linking is formed. Patterning after exposure is possible using this principle.
- the existing organic photoresist is applied to EUV, there is a problem in that sensitivity and resolution are lowered due to the low EUV extinction coefficient.
- the thickness of the photoresist must be thin to a certain level, but the lower the sensitivity, the more difficult it is to secure resistance to etching, causing collapse of the pattern or deterioration of the uniformity of the surface. is not applicable.
- Korean Patent Registration No. 10-1799396 relates to a photoresist composition and a method of forming a pattern using the same.
- a photoresist composition including an alkali-soluble resin, a photosensitizer including a compound including diazonaphthoquinone, and a solvent to form a photoresist pattern having a high profile angle, tin-oxygen clusters and No mention is made of a photoresist composition comprising an oxidizing agent.
- the present invention is to solve the above-mentioned problems of the prior art, and provides a photoresist composition having excellent mechanical and chemical stability and excellent photosensitivity.
- a photoresist for EUV comprising the photoresist composition is provided.
- the first aspect of the present application tin-oxygen cluster; oxidizer; and polar organic solvents; It provides a photoresist composition that includes, wherein the bonds constituting the clusters are broken when irradiated with ultraviolet rays to form cross-linked bonds between the clusters.
- the tin-oxygen cluster may include a compound represented by Formula 1 below, but is not limited thereto:
- X is p-CH 3 C 6 H 4 SO 3 or OH.
- the X may be substituted with a radical reaction derivative by the oxidizing agent, but is not limited thereto.
- the radical reaction derivative may include an anion selected from the group consisting of NO 3 - , BrO 3 - , ClO 4 - , IO 4 - and combinations thereof, but is limited thereto It is not.
- photosensitivity of the photoresist composition may be increased by the substitution, but is not limited thereto.
- the oxidizing agent is selected from the group consisting of nitric acid, bromic acid, perchloric acid, periodic acid, and combinations thereof It may include, but is not limited thereto.
- the polar organic solvent may include one selected from the group consisting of methanol, ethanol, 2-propanol, 2-methoxyethanol, and combinations thereof, but is not limited thereto.
- the second aspect of the present application comprises the steps of forming a thin film by coating the photoresist composition according to the first aspect of the present application; heat-treating the thin film; radiating ultraviolet rays after disposing a mask on the thin film; and supporting the thin film in a solvent; Including, it provides a photolithography process.
- bonds constituting the clusters may be broken by the irradiation to form cross-links between the clusters, but is not limited thereto.
- a portion of the thin film not irradiated with ultraviolet rays may be dissolved in the solvent, but is not limited thereto.
- the coating is performed by spin coating, bar coating, gravure printing, screen printing, or ink-jet printing It may be, but is not limited thereto.
- the heat treatment may be performed at a temperature range of 30 ° C to 150 ° C, but is not limited thereto.
- the solvent may include one selected from the group consisting of ethanol, isopropyl alcohol, butanol, methyl ethyl ketone, dimethyl sulfoxide, and combinations thereof, but is not limited thereto.
- a third aspect of the present application provides a photoresist for EUV, including the photoresist composition according to the first aspect of the present application.
- the photoresist composition according to the present application includes a tin-oxygen cluster and an oxidizing agent, and the composition includes tin (Sn), a component element exhibiting high extreme ultraviolet absorbance, in the photoresist to increase the absorption rate and sensitivity to photons and to increase the photon absorption rate and sensitivity.
- tin a component element exhibiting high extreme ultraviolet absorbance
- the photoresist composition according to the present application replaces anions present around the cluster structure with a radical reaction derivative through the oxidizing agent, thereby increasing radical reaction efficiency even with a short exposure time, compared to a cluster material without a radical reaction derivative. Reaction sensitivity amplification can be achieved.
- the organic solvent selection and mixing ratio are optimized and applied stably to the process, and excellent pattern formation and maintenance during wet development, excellent uniformity, and high solvent selection Rain can be achieved.
- FIG. 1 is a schematic view of the synthesis of a photoresist composition according to an embodiment of the present application.
- FIG. 2 is a flow chart of a photoresist process according to one embodiment of the present application.
- Figure 3 is a graph showing the results of confirming the light reactivity according to the exposure time of the photoresist composition according to an embodiment and a comparative example of the present application.
- FIG. 4 is a patterning result of a photoresist composition according to an embodiment and a comparative example of the present application according to DUV exposure time.
- TGA thermal weight change analysis
- XPS 6 is an X-ray photoelectron spectroscopy (XPS) result of the photoresist composition according to Example 1 of the present application before and after DUV exposure.
- XPS X-ray photoelectron spectroscopy
- XPS 7 is an X-ray photoelectron spectroscopy (XPS) result of the photoresist composition according to Example 2 of the present application before and after DUV exposure.
- XPS X-ray photoelectron spectroscopy
- XPS 8 is an X-ray photoelectron spectroscopy (XPS) result of the photoresist composition according to Example 3 of the present application before and after DUV exposure.
- XPS X-ray photoelectron spectroscopy
- Example 9 is a micro pattern formation result according to before and after EUV exposure of the photoresist composition according to Example 1 of the present application.
- the term "combination thereof" included in the expression of the Markush form means one or more mixtures or combinations selected from the group consisting of the components described in the expression of the Markush form, and the components It means including one or more selected from the group consisting of.
- the first aspect of the present application tin-oxygen cluster; oxidizer; and polar organic solvents; It provides a photoresist composition that includes, wherein the bonds constituting the clusters are broken when irradiated with ultraviolet rays to form cross-linked bonds between the clusters.
- the photoresist composition according to the present application includes a tin-oxygen cluster and an oxidizing agent, and the composition includes tin (Sn), a component element exhibiting high extreme ultraviolet absorbance, in the photoresist to increase the absorption rate and sensitivity to photons and to increase the photon absorption rate and sensitivity.
- tin a component element exhibiting high extreme ultraviolet absorbance
- the photoresist composition according to the present application replaces anions present around the cluster structure with a radical reaction derivative through the oxidizing agent, thereby increasing radical reaction efficiency even with a short exposure time, compared to a cluster material without a radical reaction derivative. Reaction sensitivity amplification can be achieved.
- the organic solvent selection and mixing ratio are optimized and applied stably to the process, and excellent pattern formation and maintenance during wet development, excellent uniformity, and high solvent selection Rain can be achieved.
- the portion exposed to light causes a polymerization reaction to form cross-linking with neighboring cluster units to become insoluble, and the portion covered by the mask maintains properties of the polar solvent.
- a strip can be made by a more polar solvent or acid.
- the ultraviolet rays include 13.5 nm EUV (Extreme Ultraviolet) and 6.5 nm BEUV (Beyond Extreme Ultraviolet) next-generation light sources, and in conventional photoresist compositions, low absorbance for extreme ultraviolet rays, unstable chemical and mechanical properties, low etching resistance and chemical Unlike problems such as uncontrollability of photosensitivity due to amplification effect, the photoresist composition according to the present disclosure can have high absorbance for EUV and BEUV and stable chemical and mechanical properties.
- the tin-oxygen cluster may include a compound represented by Formula 1 below, but is not limited thereto:
- X is p-CH 3 C 6 H 4 SO 3 or OH.
- FIG. 1 is a schematic view of the synthesis of a photoresist composition according to an embodiment of the present application.
- the tin-oxygen cluster is synthesized from a metal-oxo cluster-based photoresist composed of Sn, which exhibits high extreme ultraviolet absorbance, as a starting material. It is composed of , and it can be confirmed that Butyl group is bonded to Sn, and p-CH 3 C 6 H 4 SO 3 or Hydroxyl group exists as an anion around the cage.
- the X may be substituted with a radical reaction derivative by the oxidizing agent, but is not limited thereto.
- photosensitivity of the photoresist composition may be increased by the substitution, but is not limited thereto.
- the oxidizing agent can maximize the photo-radical reaction of the photoresist composition according to the present application by substituting the X, which is an anion existing around the tin-oxygen cluster, with a radical reactive derivative.
- an oxidizing agent is used to increase the efficiency of a radical oxidation reaction by substituting an anion around a cluster cage with a radical reaction derivative.
- the radical reaction derivative may include an anion selected from the group consisting of NO 3 - , BrO 3 - , ClO 4 - , IO 4 - and combinations thereof, but is limited thereto It is not.
- the oxidizing agent is selected from the group consisting of nitric acid, bromic acid, perchloric acid, periodic acid, and combinations thereof It may include, but is not limited thereto.
- the radical reaction derivative may vary depending on the type of oxidizing agent used.
- the radical reaction derivative may be NO 3 - , but is not limited thereto.
- the polar organic solvent may include one selected from the group consisting of methanol, ethanol, 2-propanol, 2-methoxyethanol, and combinations thereof, but is not limited thereto.
- the oxidizing agent capable of introducing radical reactive derivatives is mixed with tin-oxygen clusters to introduce radical reactive derivative ions around the cluster cage, and finally through a process of dispersing them in a polar organic solvent. formed by ink.
- the organic solvent selection and mixing ratio it is stably applied to the process, and excellent pattern formation and maintenance, excellent uniformity, and high solvent selectivity can be achieved during wet development.
- the second aspect of the present application comprises the steps of forming a thin film by coating the photoresist composition according to the first aspect of the present application; heat-treating the thin film; radiating ultraviolet rays after disposing a mask on the thin film; and supporting the thin film in a solvent; Including, it provides a photolithography process.
- FIG. 2 is a flow chart of a photoresist process according to one embodiment of the present application.
- a thin film is formed by coating the photoresist composition according to the first aspect of the present application (S100).
- the coating is performed by spin coating, bar coating, gravure printing, screen printing, or ink-jet printing It may be, but is not limited thereto.
- the photoresist composition according to the present application is formed with a solvent-based ink and is formed as a thin film on a substrate through general spin coating, bar coating, gravure printing, and screen printing. It is possible to form, and furthermore, substrate printing is possible by applying to ink-jet printing in the industry.
- the thin film may be subjected to heat treatment to maximize reactivity and stably form the thin film before irradiation with ultraviolet rays.
- the heat treatment may be performed at a temperature range of 30 ° C to 150 ° C, but is not limited thereto.
- bonds constituting the clusters may be broken by the irradiation to form cross-links between the clusters, but is not limited thereto.
- the part exposed to light by irradiating ultraviolet rays causes a polymerization reaction to form cross-links with neighboring cluster units to become insoluble, and the part covered by the mask maintains solubility in polar solvents and can form patterning during wet development.
- a portion of the thin film not irradiated with ultraviolet rays may be dissolved in the solvent, but is not limited thereto.
- the portion not irradiated with ultraviolet light maintains solubility in the solvent, and when the thin film is supported in the solvent, the portion not irradiated with ultraviolet light is dissolved to form a pattern on the thin film.
- the solvent may include one selected from the group consisting of ethanol, isopropyl alcohol, butanol, methyl ethyl ketone, dimethyl sulfoxide, and combinations thereof, but is not limited thereto.
- a third aspect of the present application provides a photoresist for EUV, including the photoresist composition according to the first aspect of the present application.
- the portion exposed to light causes a polymerization reaction to form cross-linking with neighboring cluster units to become insoluble, and the portion covered by the mask maintains properties of the polar solvent.
- a strip can be made by a more polar solvent or acid.
- the ultraviolet rays include 13.5 nm EUV (Extreme Ultraviolet) and 6.5 nm BEUV (Beyond Extreme Ultraviolet) next-generation light sources, and in conventional photoresist compositions, low absorbance for extreme ultraviolet rays, unstable chemical and mechanical properties, low etching resistance and chemical Unlike problems such as uncontrollability of photosensitivity due to amplification effect, the photoresist composition according to the present disclosure can have high absorbance for EUV and BEUV and stable chemical and mechanical properties.
- [(BuSn) 12 O 14 (OH) 6 ][OH] 2 is mixed with nitric acid to prepare [(BuSn) 12 O 14 (OH) 6 ][NO 3 ] 2 photoresist, which is a polar organic solvent.
- a 6.1 mM photoresist composition was prepared by dissolving in methanol, ethanol, 2-propanol, 2-methoxyethanol, or a mixed solvent.
- [(BuSn) 12 O 14 (OH) 6 ][OH] 2 is mixed with periodic acid to prepare [(BuSn) 12 O 14 (OH) 6 ][IO 4 ] 2 photoresist, which is polar organic
- a 6.1 mM photoresist composition was prepared by dissolving in solvents such as methanol, ethanol, 2-propanol, 2-methoxyethanol, or a mixed solvent.
- the photoresist composition according to Examples 1 to 3 and Comparative Example was spin-coated (3000 rpm, 30 seconds) on a substrate to form a thin film, and then annealed at 90 ° C. for about 1 minute and irradiated with DUV. .
- the thin film was immersed in an organic solvent and developed for 1 minute, and the remaining thickness was confirmed and shown in a graph.
- Figure 3 is a graph showing the results of confirming the light reactivity according to the exposure time of the photoresist composition according to one embodiment and comparative example of the present application.
- the photoresist according to Example 1 proceeds 100% when exposed to at least 116 mJ/cm2, the photoresist according to Example 2 is 228 mJ/cm2, and the photoresist according to Example 3 is 213 mJ/cm2.
- the photoreaction efficiency was improved up to 4 times through the introduction of the radical derivative.
- FIG. 4 is a patterning result of a photoresist composition according to an embodiment and a comparative example of the present application according to DUV exposure time.
- Example 1 stable pattern implementation can be confirmed even when the DUV exposure is performed for 30 seconds (116 mJ/cm 2 ) or more, and in the case of Examples 2 and 3, the pattern is stable even at an exposure amount of 200 mJ/cm 2 or more. confirmed that it can be implemented.
- TGA thermal weight change analysis
- each photoresist composition can confirm a weight change through an exothermic reaction at around 200° C., and in the case of Example 1, it can be seen that there is a weight change around 150° C. Through this, it can be seen that the decomposition of the elements constituting the photoresist forms radicals, and at this time, a weight change occurs due to the loss of Butyl groups, Hydroxyl groups, and anions bonded in the structure.
- X-ray photoelectron spectroscopy was performed according to the photoresist compositions of Examples 1 to 3 before and after DUV exposure.
- XPS 6 is an X-ray photoelectron spectroscopy (XPS) result of the photoresist composition according to Example 1 of the present application before and after DUV exposure.
- XPS X-ray photoelectron spectroscopy
- XPS 7 is an X-ray photoelectron spectroscopy (XPS) result of the photoresist composition according to Example 2 of the present application before and after DUV exposure.
- XPS X-ray photoelectron spectroscopy
- the Cl 2p analysis results show ClO 4 - Peak at 207.9 eV for Cl 2p3/2 and 209.5 eV for Cl 2p1/2 before and after exposure.
- metal chloride that is, SnCl 2 Peak was confirmed at 198.9 eV for Cl 2p3/2 and 200.5 eV for Cl 2p1/2. It can be seen that SnCl 2 peak intensity increased after DUV because SnCl 2 bond was increased due to decomposition of chloride ion, which is a radical reaction derivative after exposure.
- XPS 8 is an X-ray photoelectron spectroscopy (XPS) result of the photoresist composition according to Example 3 of the present application before and after DUV exposure.
- XPS X-ray photoelectron spectroscopy
- Sn-O-Sn and Sn-O-H peaks originating from the Tin-oxo cluster structure can be observed at 530.4 eV and 531.9 eV before exposure.
- I 3d5/2 is located at 619.72 eV and I 3d3/2 is located at 631.22 eV before and after exposure, which is confirmed as a metal iodide, that is, SnI2 Peak. After exposure, the intensity of the I 3d peak tends to decrease slightly.
- Example 9 is a micro pattern formation result according to before and after EUV exposure of the photoresist composition according to Example 1 of the present application.
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Abstract
Description
Claims (14)
- 주석-산소 클러스터;산화제; 및극성 유기용매;를 포함하고,자외선 조사 시 상기 클러스터를 구성하는 결합이 끊어져 클러스터간에 가교 결합이 형성되는 것인,포토레지스트 조성물.
- 제 1 항에 있어서,상기 주석-산소 클러스터는 하기 화학식 1 로 표시되는 화합물을 포함하는 것인, 포토레지스트 조성물:[화학식 1][(BuSn)12O14(OH)6][X]2(상기 화학식 1 에서,X는 p-CH3C6H4SO3 또는 OH 임).
- 제 2 항에 있어서,상기 X 가 상기 산화제에 의해 라디칼 반응 유도체로 치환되는 것인,포토레지스트 조성물.
- 제 3 항에 있어서,상기 라디칼 반응 유도체는 NO3 -, BrO3 -, ClO4 -, IO4 - 및 이들의 조합들로 이루어진 군에서 선택되는 음이온을 포함하는 것인,포토레지스트 조성물.
- 제 3 항에 있어서,상기 치환에 의해 상기 포토레지스트 조성물의 감광성이 증가하는 것인,포토레지스트 조성물.
- 제 1 항에 있어서,상기 산화제는 질산(Nitric acid), 브롬산(Bromic acid), 과염소산(Perchloric acid), 과아이오딘산(Periodic acid) 및 이들의 조합들로 이루어진 군에서 선택되는 것을 포함하는 것인,포토레지스트 조성물.
- 제 1 항에 있어서,상기 극성 유기 용매는 메탄올, 에탄올, 2-프로판올, 2-메톡시에탄올 및 이들의 조합들로 이루어진 군에서 선택되는 것을 포함하는 것인,포토레지스트 조성물.
- 제 1 항에 따른 포토레지스트 조성물을 코팅하여 박막을 형성하는 단계;상기 박막을 열처리하는 단계;상기 박막 상에 마스크를 배치한 후 자외선을 조사하는 단계; 및상기 박막을 용매에 담지하는 단계;를 포함하는,포토리소그래피 공정.
- 제 8 항에 있어서,상기 조사에 의해 상기 클러스터를 구성하는 결합이 끊어져 클러스터간에 가교 결합이 형성되는 것인,포토리소그래피 공정.
- 제 8 항에 있어서,상기 박막을 용매에 담지하는 단계에서, 상기 박막에 자외선이 조사되지않은 부분이 상기 용매에 용해되는 것인,포토리소그래피 공정.
- 제 8 항에 있어서,상기 코팅은 스핀 코팅(Spin coating), 바 코팅(Bar coating), 그라비어 프린팅(Gravure printing), 스크린 프린팅(Screen printing) 또는 잉크젯 프린팅(Ink-jet printing)에 의해 수행되는 것인,포토리소그래피 공정.
- 제 8 항에 있어서,상기 열처리는 30℃ 내지 150℃ 의 온도범위에서 수행되는 것인,포토리소그래피 공정.
- 제 8 항에 있어서,상기 용매는 에탄올, 이소프로필알코올, 부탄올, 메틸에틸케톤, 디메틸설폭사이드 및 이들의 조합들로 이루어진 군에서 선택되는 것을 포함하는 것인,포토리소그래피 공정.
- 제 1 항에 따른 포토레지스트 조성물을 포함하는, EUV용 포토레지스트.
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| US18/835,612 US20250147416A1 (en) | 2022-02-04 | 2023-01-03 | Photoresist composition |
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| KR10-2022-0014532 | 2022-02-04 | ||
| KR1020220014532A KR102446355B1 (ko) | 2022-02-04 | 2022-02-04 | 포토레지스트 조성물 |
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| WO2023149669A1 true WO2023149669A1 (ko) | 2023-08-10 |
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| US (1) | US20250147416A1 (ko) |
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| JP2024163579A (ja) | 2023-05-12 | 2024-11-22 | 信越化学工業株式会社 | レジスト組成物及びパターン形成方法 |
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| KR19990072757A (ko) * | 1998-02-20 | 1999-09-27 | 마티네즈 길러모 | 포토레지스트조성물및이를포함하는방법및제품 |
| KR20190142242A (ko) * | 2018-06-15 | 2019-12-26 | 타이완 세미콘덕터 매뉴팩쳐링 컴퍼니 리미티드 | 첨가제를 통한 euv 금속 레지스트 성능 향상 |
| KR20200014185A (ko) * | 2018-07-31 | 2020-02-10 | 삼성에스디아이 주식회사 | 반도체 레지스트용 조성물 및 이를 이용한 패턴 형성 방법 |
| KR20210036774A (ko) * | 2019-09-25 | 2021-04-05 | 타이완 세미콘덕터 매뉴팩쳐링 컴퍼니 리미티드 | Euv 리소그래피용 유기금속 클러스터 포토레지스트 |
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| DE102020131427B4 (de) * | 2020-05-21 | 2024-03-28 | Taiwan Semiconductor Manufacturing Co., Ltd. | Photoresistzusammensetzung und Herstellungsverfahren von Photoresiststruktur |
-
2022
- 2022-02-04 KR KR1020220014532A patent/KR102446355B1/ko active Active
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2023
- 2023-01-03 WO PCT/KR2023/000098 patent/WO2023149669A1/ko not_active Ceased
- 2023-01-03 US US18/835,612 patent/US20250147416A1/en active Pending
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| KR19990072757A (ko) * | 1998-02-20 | 1999-09-27 | 마티네즈 길러모 | 포토레지스트조성물및이를포함하는방법및제품 |
| KR20190142242A (ko) * | 2018-06-15 | 2019-12-26 | 타이완 세미콘덕터 매뉴팩쳐링 컴퍼니 리미티드 | 첨가제를 통한 euv 금속 레지스트 성능 향상 |
| KR20200014185A (ko) * | 2018-07-31 | 2020-02-10 | 삼성에스디아이 주식회사 | 반도체 레지스트용 조성물 및 이를 이용한 패턴 형성 방법 |
| KR20210036774A (ko) * | 2019-09-25 | 2021-04-05 | 타이완 세미콘덕터 매뉴팩쳐링 컴퍼니 리미티드 | Euv 리소그래피용 유기금속 클러스터 포토레지스트 |
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| KR102446355B9 (ko) | 2022-12-27 |
| KR102446355B1 (ko) | 2022-09-22 |
| US20250147416A1 (en) | 2025-05-08 |
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