摘要:
The semiconductor device fabrication method comprises the step of forming gate electrode 20 on a semiconductor substrate 10 with a gate insulation film 18 formed therebetween; the step of implanting dopants in the semiconductor substrate 10 with the gate electrode 20 as the mask to form dopant diffused regions 28, 36; the step of forming a silicon oxide film 38 on the semiconductor substrate 10, covering the gate electrodes 20; anisotropically etching the silicon oxide film 38 to form sidewall spacers 42 including the silicon oxide film 38 on the side walls of the gate electrode 20. In the step of forming a silicon oxide film 38, the silicon oxide film 38 is formed by thermal CVD at a 500-580° C. film forming temperature, using bis (tertiary-butylamino) silane and oxygen as raw materials. Silicon oxide film 38 is formed at a relatively low film forming temperature, whereby the diffusion of the dopant in the dopant diffused regions 28, 36 forming the shallow region of the extension source/drain structure can be suppressed.
摘要:
The semiconductor device fabrication method comprises the step of forming gate electrode 20 on a semiconductor substrate 10 with a gate insulation film 18 formed therebetween; the step of implanting dopants in the semiconductor substrate 10 with the gate electrode 20 as the mask to form dopant diffused regions 28, 36; the step of forming a silicon oxide film 38 on the semiconductor substrate 10, covering the gate electrodes 20; anisotropically etching the silicon oxide film 38 to form sidewall spacers 42 including the silicon oxide film 38 on the side walls of the gate electrode 20. In the step of forming a silicon oxide film 38, the silicon oxide film 38 is formed by thermal CVD at a 500–580° C. film forming temperature, using bis(tertiary-butylamino)silane and oxygen as raw materials. Silicon oxide film 38 is formed at a relatively low film forming temperature, whereby the diffusion of the dopant in the doapnt diffused regions 28, 36 forming the shallow region of the extension source/drain structure can be suppressed.
摘要:
A semiconductor device manufacture method has the steps of: (a) forming a polishing stopper layer over a semiconductor substrate; (b) etching the semiconductor substrate to form a trench; (c) forming a first liner insulating layer of silicon oxide over the surface of the trench; (d) forming a second liner insulating layer of silicon nitride over the first liner insulating layer, the second liner insulating layer having a thickness of at least 20 nm or at most 8 nm; (e1) depositing a third liner insulating layer of silicon oxide over the second liner insulating layer by plasma CVD at a first bias; and (e2) depositing an isolation layer of silicon oxide by plasma CVD at a second bias higher than the first bias, the isolation layer burying a recess defined by the third liner insulating layer.
摘要:
A semiconductor device manufacturing method capable of making in-plane temperature distribution on a wafer uniform at heat treatment time. Before heat treatment is performed by irradiating the wafer with lamp light from the side of a device formed area where semiconductor devices are to be formed, an SiN film with certain thickness the reflection factor of which is equal to the average reflection factor of the device formed area is formed in an edge portion outside the device formed area. By doing so, reflection factors on the surface of the wafer irradiated with lamp light can be made uniform and uniform temperature distribution on the wafer can be obtained at heat treatment time. As a result, in-plane variations in the characteristics of semiconductor devices on the wafer can be made small and high-quality semiconductor devices can be manufactured.
摘要:
There is provided a method of manufacturing semiconductor device comprising removing an organic substance from a semiconductor surface having an oxide film thereon, the semiconductor surface being formed to have a line width of 50 nm or less; removing the oxide film from the semiconductor surface; drying the semiconductor surface without using an organic solvent; and forming a silicide layer on the semiconductor surface after drying the semiconductor surface.
摘要:
A semiconductor device manufacturing method capable of making in-plane temperature distribution on a wafer uniform at heat treatment time. Before heat treatment is performed by irradiating the wafer with lamp light from the side of a device formed area where semiconductor devices are to be formed, an SiN film with certain thickness the reflection factor of which is equal to the average reflection factor of the device formed area is formed in an edge portion outside the device formed area. By doing so, reflection factors on the surface of the wafer irradiated with lamp light can be made uniform and uniform temperature distribution on the wafer can be obtained at heat treatment time. As a result, in-plane variations in the characteristics of semiconductor devices on the wafer can be made small and high-quality semiconductor devices can be manufactured.
摘要:
There is provided a method of manufacturing semiconductor device comprising removing an organic substance from a semiconductor surface having an oxide film thereon, the semiconductor surface being formed to have a line width of 50 nm or less; removing the oxide film from the semiconductor surface; drying the semiconductor surface without using an organic solvent; and forming a silicide layer on the semiconductor surface after drying the semiconductor surface.
摘要:
A semiconductor device manufacturing method capable of making in-plane temperature distribution on a wafer uniform at heat treatment time. Before heat treatment is performed by irradiating the wafer with lamp light from the side of a device formed area where semiconductor devices are to be formed, an SiN film with certain thickness the reflection factor of which is equal to the average reflection factor of the device formed area is formed in an edge portion outside the device formed area. By doing so, reflection factors on the surface of the wafer irradiated with lamp light can be made uniform and uniform temperature distribution on the wafer can be obtained at heat treatment time. As a result, in-plane variations in the characteristics of semiconductor devices on the wafer can be made small and high-quality semiconductor devices can be manufactured.
摘要:
A semiconductor device manufacturing method capable of making in-plane temperature distribution on a wafer uniform at heat treatment time. Before heat treatment is performed by irradiating the wafer with lamp light from the side of a device formed area where semiconductor devices are to be formed, an SiN film with certain thickness the reflection factor of which is equal to the average reflection factor of the device formed area is formed in an edge portion outside the device formed area. By doing so, reflection factors on the surface of the wafer irradiated with lamp light can be made uniform and uniform temperature distribution on the wafer can be obtained at heat treatment time. As a result, in-plane variations in the characteristics of semiconductor devices on the wafer can be made small and high-quality semiconductor devices can be manufactured.
摘要:
A method of producing a semiconductor device is disclosed that is able to reduce fluctuations of a sheet resistance of a silicide layer in the semiconductor device formed by a salicide process. When depositing a titanium nitride film on a cobalt film in the salicide process, the thickness of the titanium nitride film is set to be sufficiently small so that a nano-grain structure or an amorphous structure is formed in the titanium nitride film. In the titanium nitride film, the titanium composition is enriched.