摘要:
According to one embodiment, a method of forming a pattern includes applying a block copolymer to a substrate, the block copolymer including a first block and a second block, the first block including polyacrylate or polymethacrylate having a side chain to which an alicyclic hydrocarbon group or a hydrocarbon group including a tertiary carbon is introduced, and the second block including polystyrene substituted with hydrocarbon or halogen at an α-position, causing the block copolymer to be phase-separated, irradiating the block copolymer with an energy beam to decompose the second block, and removing the second block with a developer to form a pattern of the first block.
摘要:
According to one embodiment, a method of forming a pattern includes forming a monolayer on a substrate, selectively exposing the monolayer to an energy beam and selectively modifying exposed portions thereof to form patterns of exposed and unexposed portions, forming a block copolymer layer includes first and second block chains on the monolayer, and causing the block copolymer layer to be phase-separated to form patterns of the first and second block chains of the block copolymer layer based on the patterns of the exposed and unexposed portions of the monolayer.
摘要:
According to one embodiment, a method of forming a pattern includes applying a block copolymer to a substrate, the block copolymer including a first block and a second block, the first block including polyacrylate or polymethacrylate having a side chain to which an alicyclic hydrocarbon group or a hydrocarbon group including a tertiary carbon is introduced, and the second block including polystyrene substituted with hydrocarbon or halogen at an α-position, causing the block copolymer to be phase-separated, irradiating the block copolymer with an energy beam to decompose the second block, and removing the second block with a developer to form a pattern of the first block.
摘要:
According to one embodiment, a method of forming a pattern includes forming a monolayer on a substrate, selectively exposing the monolayer to an energy beam and selectively modifying exposed portions thereof to form patterns of exposed and unexposed portions, forming a block copolymer layer includes first and second block chains on the monolayer, and causing the block copolymer layer to be phase-separated to form patterns of the first and second block chains of the block copolymer layer based on the patterns of the exposed and unexposed portions of the monolayer.
摘要:
A nonvolatile semiconductor memory device of an embodiment includes: a semiconductor layer; a tunnel insulating film that is formed on the semiconductor layer and includes a first organic molecular film including first organic molecules each having an alkyl molecular chain as the main chain; a charge storage layer formed on the tunnel insulating film, the charge storage layer being made of an inorganic material; a block insulating film formed on the charge storage layer; and a control gate electrode formed on the block insulating film.
摘要:
A nonvolatile semiconductor memory device of an embodiment includes: a semiconductor layer; a tunnel insulating film formed on the semiconductor layer; an organic molecular layer that is formed on the tunnel insulating film, and includes first organic molecules and second organic molecules having a smaller molecular weight than the first organic molecules, the first organic molecules each including a first alkyl chain or a first alkyl halide chain having one end bound to the tunnel insulating film, the first organic molecules each including a charge storage portion bound to the other end of the first alkyl chain or the first alkyl halide chain, the second organic molecules each including a second alkyl chain or a second alkyl halide chain having one end bound to the tunnel insulating film; a block insulating film formed on the organic molecular layer; and a control gate electrode formed on the block insulating film.
摘要:
According to one embodiment, there is provided a method of forming a pattern including forming a polymer layer on a substrate, the polymer layer including a first and second regions, selectively irradiating either of the first and second regions with energy rays or irradiating the first and second regions with energy rays under different conditions to cause a difference in surface free energy between the first and second regions, thereafter, forming a block copolymer layer on the polymer layer, and causing microphase separation in the block copolymer layer to simultaneously form first and second microphase-separated structures on the first and second regions, respectively.
摘要:
According to one embodiment, a pattern including first and second block phases is formed by self-assembling a block copolymer onto a film to be processed. The entire block copolymer present in a first region is removed under a first condition by carrying out energy beam irradiation and development, thereby leaving a pattern including the first and second block phases in a region other than the first region. The first block phase present in a second region is selectively removed under a second condition by carrying out energy beam irradiation and development, thereby leaving a pattern including the first and second block phases in an overlap region between a region other than the first region and a region other than the second region, and leaving a pattern of second block phase in the second region excluding the overlap region. The film is etched with the left patterns as masks.
摘要:
According to one embodiment, there is provided a method of forming a pattern including forming a polymer layer on a substrate, the polymer layer including a first and second regions, selectively irradiating either of the first and second regions with energy rays or irradiating the first and second regions with energy rays under different conditions to cause a difference in surface free energy between the first and second regions, thereafter, forming a block copolymer layer on the polymer layer, and causing microphase separation in the block copolymer layer to simultaneously form first and second microphase-separated structures on the first and second regions, respectively.
摘要:
A nonvolatile semiconductor memory device of an embodiment includes: a semiconductor layer; a tunnel insulating film formed on the semiconductor layer; an organic molecular layer that is formed on the tunnel insulating film, and includes first organic molecules and second organic molecules having a smaller molecular weight than the first organic molecules, the first organic molecules each including a first alkyl chain or a first alkyl halide chain having one end bound to the tunnel insulating film, the first organic molecules each including a charge storage portion bound to the other end of the first alkyl chain or the first alkyl halide chain, the second organic molecules each including a second alkyl chain or a second alkyl halide chain having one end bound to the tunnel insulating film; a block insulating film formed on the organic molecular layer; and a control gate electrode formed on the block insulating film.