摘要:
The present invention relates to organic anti-reflective coating polymers suitable for use in manufacturing a semiconductor device using a photolithography process for forming ultrafine-patterns with a 193 nm ArF beam, and preparation methods therefor. Anti-reflective coating polymers of the present invention contain a monomer having a phenyl group and amide linkage with high light absorbency at the 193 nm wavelength. When the polymers of the present invention are used in an anti-reflective coating in a photolithography process for forming ultrafine-patterns, the polymers eliminate the standing waves caused by changes in the thickness of the photoresist layer, by the spectroscopic property of the lower layers of the semiconductor wafer and by changes in CD due to diffractive and reflective light originating from the lower layer, thereby resulting in the stable formation of ultrafine-patters suitable for 64 M, 256 M, 1 G, 4 G and 16 G DRAM semiconductor devices and a great improvement in the production yield. The present invention also relates to anti-reflective compositions containing these polymers, anti-reflective coatings formed from these compositions and semiconductor devices containing these anti-reflective coatings, as well as preparation methods therefor.
摘要:
The present invention provides an anti-reflective coating polymer, an anti-reflective coating (ARC) composition comprising the same, methods for producing the same, and methods for using the same. The anti-reflective coating polymer of the present invention are particularly useful in a submicrolithographic process, for example, using ArF (193 nm) laser as a light source. The ARC of the present invention significantly reduces or prevents back reflection of light and the problem of the CD alteration caused by the diffracted and/or reflected light. The ARC of the present invention also significantly reduces or eliminates the standing wave effect and reflective notching. Thus, the use of ARC of the present invention results in formation of a stable ultrafine pattern that is suitable in manufacturing of 1G, and 4G DRAM semiconductor devices. Moreover, the ARC of the present invention significantly improves the production yield of such semiconductor devices.
摘要:
The composition for preventing development-defects containing (1) an ammonium salt, a tetraalkylammonium salt or a C1 to C4 alkanolamine salt of C4 to C15 perfluoroalkylcarboxylic acid, C4 to C10 perfluoroalkylsulfonic acid and perfluoroadipic acid, or (2) a fluorinated alkyl quaternary ammonium salt of inorganic acid, wherein said surfactant is formed at the equivalent ratio of acid to base of 1:1-1:3 is applied on a chemically amplified photoresist coating on a substrate having a diameter of 8 inches or more. The chemically amplified photoresist coating is baked before and/or after applying the composition for preventing development-defects described above. Then, the baked coating with the development-defect preventing composition coating is exposed to light, post-exposure-baked, and developed. By this process, compared with the case of not using the composition for preventing development-defects, the amount of reduction in film thickness of the photoresist subsequent to development treatment is made further bigger by 100 Å to 600 Å, and the development-defects on a substrate having a diameter of 8 inches or more is reduced as well as a resist pattern having a good cross section form can be formed without T-top form etc.
摘要:
The composition for preventing development-defects containing (1) an ammonium salt, a tetraalkylammonium salt or a C1 to C4 alkanolamine salt of C4 to C15 perfluoroalkylcarboxylic acid, C4 to C10 perfluoroalkylsulfonic acid and perfluoroadipic acid, or (2) a fluorinated alkyl quaternary ammonium salt of inorganic acid, wherein said surfactant is formed at the equivalent ratio of acid to base of 1:1-1:3 is applied on a chemically amplified photoresist coating on a substrate having a diameter of 8 inches or more. The chemically amplified photoresist coating is baked before and/or after applying the composition for preventing development-defects described above. Then, the baked coating with the development-defect preventing composition coating is exposed to light, post-exposure-baked, and developed. By this process, compared with the case of not using the composition for preventing development-defects, the amount of reduction in film thickness of the photoresist subsequent to development treatment is made further bigger by 100 Å to 600 Å, and the development-defects on a substrate having a diameter of 8 inches or more is reduced as well as a resist pattern having a good cross section form can be formed without T-top form etc.
摘要:
The present invention discloses an ultrafine graphitic carbon fiber and a preparation method thereof. An ultrafine fiber having a diameter of 1 to 3000 nm is prepared by electrospinning a halogenated polymer solution containing a metal compound inducing graphitization. In carbonization, an ultrafine porous graphitic carbon fiber having a large specific surface area, micropores and macropores is prepared by the graphitization by a metal catalyst generated from the metal compound. The ultrafine carbon fiber can be used as a carbon material for storing hydrogen, an adsorbing material of biochemically noxious substances, an electrode material of a supercapacitor, a secondary cell and a fuel cell, and a catalyst carrier material.
摘要:
The present invention discloses an ultrafine graphitic carbon fiber and a preparation method thereof. An ultrafine fiber having a diameter of 1 to 3000 nm is prepared by electrospinning a halogenated polymer solution containing a metal compound inducing graphitization. In carbonization, an ultrafine porous graphitic carbon fiber having a large specific surface area, micropores and macropores is prepared by the graphitization by a metal catalyst generated from the metal compound. The ultrafine carbon fiber can be used as a carbon material for storing hydrogen, an adsorbing material of biochemically noxious substances, an electrode material of a supercapacitor, a secondary cell and a fuel cell, and a catalyst carrier material.
摘要:
A water-soluble resin composition of the present invention comprises at least a water-soluble resin, an acid generator capable of generating an acid by heating and a solvent containing water. The water-soluble resin composition is applied on a highly water-repellant resist pattern 3 formed by a resist such as an ArF-responsive radiation sensitive resin composition on a substrate 1 to form a coated layer 4 thereon. The resist pattern 3 and the coated layer 4 are heat-treated to form a developer-insoluble modified coated layer 5 in the vicinity of a surface of the resist pattern 3. The coated layer is developed and the resist pattern thickened by the modified layer 5 is formed. The modified layer is a layer with sufficient thickness and is able to be formed with a high dimensional controllability in a highly water-repellant resist pattern such as ArF-responsive radiation sensitive resin composition. As a result, a separation size and a hole aperture size of the resist pattern are reduced effectively to less than a limit resolution. As the modified layer 5 has a function of a protecting film for the resist pattern upon electron beam irradiation, a size measurement fluctuation of a resist pattern upon electron beam irradiation by a size measuring SEM can be prevented.
摘要:
A water-soluble resin composition of the present invention comprises at least a water-soluble resin, an acid generator capable of generating an acid by heating and a solvent containing water. The water-soluble resin composition is applied on a highly water-repellant resist pattern 3 formed by a resist such as an ArF-responsive radiation sensitive resin composition on a substrate 1 to form a coated layer 4 thereon. The resist pattern 3 and the coated layer 4 are heat-treated to form a developer-insoluble modified coated layer 5 in the vicinity of a surface of the resist pattern 3. The coated layer is developed and the resist pattern thickened by the modified layer 5 is formed. The modified layer is a layer with sufficient thickness and is able to be formed with a high dimensional controllability in a highly water-repellant resist pattern such as ArF-responsive radiation sensitive resin composition. As a result, a separation size and a hole aperture size of the resist pattern are reduced effectively to less than a limit resolution. As the modified layer 5 has a function of a protecting film for the resist pattern upon electron beam irradiation, a size measurement fluctuation of a resist pattern upon electron beam irradiation by a size measuring SEM can be prevented.
摘要:
The composition for preventing development-defects containing (1) an ammonium salt, a tetraalkylammonium salt or a C1 to C4 alkanolamine salt of C4 to C15 perfluoroalkylcarboxylic acid, C4 to C10 perfluoroalkylsulfonic acid and perfluoroadipic acid, or (2) a fluorinated alkyl quaternary ammonium salt of inorganic acid, wherein said surfactant is formed at the equivalent ratio of acid to base of 1:1-1:3 is applied on a chemically amplified photoresist coating on a substrate having a diameter of 8 inches or more. The chemically amplified photoresist coating is baked before and/or after applying the composition for preventing development-defects described above. Then, the baked coating with the development-defect preventing composition coating is exposed to light, post-exposure-baked, and developed. By this process, compared with the case of not using the composition for preventing development-defects, the amount of reduction in film thickness of the photoresist subsequent to development treatment is made further bigger by 100 Å to 600 Å, and the development-defects on a substrate having a diameter of 8 inches or more is reduced as well as a resist pattern having a good cross section form can be formed without T-top form etc.
摘要:
A process which comprises applying a water-soluble resin composition comprising a water-soluble vinyl resin, a compound having at least two amino groups in the molecule, a solvent, and, if necessary, an additive such as a surfactant on a resist pattern (2) formed on a substrate (1) to form a water-soluble resin film (3) , modifying part of the water-soluble resin film adjacent to the resist pattern through mixing to form a water-insolubilized layer (4) which cannot be removed by water washing on the surface of the resist pattern, and removing unmodified part of the water-soluble resin film by water washing and which enables the effective scale-down of separation size and hole opening size of a resist pattern to a level finer than the limit of resolution of the wave length of exposure. It is preferable to use as the water-soluble vinyl resin a homopolymer of a nitrogen-containing vinyl monomer such as acrylamine, vinylpyrrolidone or vinylimidazole, a copolymer of two or more nitrogen-containing vinyl monomers, or a copolymer of at least one nitrogen-containing vinyl monomer and at least one nitrogen-free vinyl monomer.