摘要:
In a method of forming a shallow trench isolation (STI) region in a semiconductor device, a pad oxide layer and a pad nitride layer may be formed on a semiconductor substrate. The pad nitride layer and pad oxide layer may be patterned to form an isolation region with exposed portions on the pad nitride layer, pad oxide layer and semiconductor substrate. A radical oxide layer may be formed on the exposed portions, and a trench may be formed in the isolation region by etching the semiconductor substrate and radical oxide layer. The STI region may be formed by filling an insulating layer in the trench.
摘要:
A method of forming a dielectric layer having a reduced thickness according to embodiments of the invention includes forming a lower oxide layer on a substrate, and forming a nitride layer on the lower oxide layer. Then, a preliminary oxide layer is formed on the nitride layer. A radical oxidation process using oxygen radicals is performed on the preliminary oxide layer to form an upper oxide layer on the nitride layer. The dielectric layer includes an ONO composite layer consisting of the lower oxide layer, the nitride layer, and the upper oxide layer. Due to the decreased thickness of the dielectric layer, the dielectric layer has an improved capacitance and an increased coupling coefficient.
摘要:
A method of fabricating a transistor with a recessed channel is provided. The method includes forming trenches for a recessed channel on a semiconductor substrate, depositing an isolation layer on the semiconductor substrate on which the trenches are formed, depositing a gate dielectric layer on the semiconductor substrate so that the gate dielectric layer can be extended to bottoms and sidewalls of the trenches, forming gates to fill the trenches, and forming source and drain regions in the semiconductor substrate adjacent to the gates.
摘要:
A method of fabricating a transistor with a recessed channel is provided. The method includes forming trenches for a recessed channel on a semiconductor substrate, depositing an isolation layer on the semiconductor substrate on which the trenches are formed, depositing a gate dielectric layer on the semiconductor substrate so that the gate dielectric layer can be extended to bottoms and sidewalls of the trenches, forming gates to fill the trenches, and forming source and drain regions in the semiconductor substrate adjacent to the gates.
摘要:
In a method of manufacturing a semiconductor device such as a flash memory device, an insulating pattern having an opening is formed to partially expose a surface of a substrate. A first silicon layer is formed on the exposed surface portion of the substrate and the insulating pattern. The first silicon layer has an opened seam overlying the previously exposed portion of the substrate. A heat treatment on the substrate is performed at a temperature sufficient to induce silicon migration so as to cause the opened seam to be closed via the silicon migration. A second silicon layer is then formed on the first silicon layer. Thus, surface profile of a floating gate electrode obtained from the first and second silicon layers may be improved.
摘要:
In a method of manufacturing a semiconductor device such as a flash memory device, an insulating pattern having an opening is formed to partially expose a surface of a substrate. A first silicon layer is formed on the exposed surface portion of the substrate and the insulating pattern. The first silicon layer has an opened seam overlying the previously exposed portion of the substrate. A heat treatment on the substrate is performed at a temperature sufficient to induce silicon migration so as to cause the opened seam to be closed via the silicon migration. A second silicon layer is then formed on the first silicon layer. Thus, surface profile of a floating gate electrode obtained from the first and second silicon layers may be improved.
摘要:
A method of filling gaps in an integrated circuit device is provided, that is less likely to fill voids and does not cause a lung defect. In one embodiment, a method of manufacturing an integrated circuit device including the gap filling method includes: etching a predetermined area of an integrated circuit device to form a trench, filling the trench with a high density plasma oxide by performing an HDP-CVD process using a first process gas including comprising a gas containing an element from the fluorine group, silane gas, and oxygen to form a high density plasma oxide layer, and plasma treating the integrated circuit substrate with a second process gas including a hydrogen gas or hydrogen and oxygen gases.
摘要:
In a storage electrode of a semiconductor device, and a method of forming the same, the storage electrode includes an outer cylinder including a first outer cylindrical portion having a first outer diameter, and a second outer cylindrical portion that is formed on the first outer cylindrical portion and having a second outer diameter, which is less than the first outer diameter, the first and second outer cylindrical portions having substantially equal inner diameters, and an inner cylinder formed on inner surfaces of the outer cylinder.
摘要:
In a storage electrode of a semiconductor device, and a method of forming the same, the storage electrode includes an outer cylinder including a first outer cylindrical portion having a first outer diameter, and a second outer cylindrical portion that is formed on the first outer cylindrical portion and having a second outer diameter, which is less than the first outer diameter, the first and second outer cylindrical portions having substantially equal inner diameters, and an inner cylinder formed on inner surfaces of the outer cylinder.
摘要:
In a storage electrode of a semiconductor device, and a method of forming the same, the storage electrode includes an outer cylinder including a first outer cylindrical portion having a first outer diameter, and a second outer cylindrical portion that is formed on the first outer cylindrical portion and having a second outer diameter, which is less than the first outer diameter, the first and second outer cylindrical portions having substantially equal inner diameters, and an inner cylinder formed on inner surfaces of the outer cylinder.