摘要:
A native film formed on the surface of a silicon substrate is removed. Arsenic is doped into the surface of the silicon substrate to form an n-type impurity diffusion layer as a lower capacitor electrode. A silicon nitride film as a capacitor insulating film is formed on the n-type impurity diffusion layer without growing any oxide film on the surface of the n-type impurity diffusion layer. An upper capacitor electrode is formed on the silicon nitride film.
摘要:
To change a plurality of trenches to one flat empty space by two-dimensionally forming the trenches on the surface of a semiconductor substrate and then applying heat treatment to the semiconductor substrate.
摘要:
To change a plurality of trenches to one flat empty space by two-dimensionally forming the trenches on the surface of a semiconductor substrate and then applying heat treatment to the semiconductor substrate.
摘要:
To change a plurality of trenches to one flat empty space by two-dimensionally forming the trenches on the surface of a semiconductor substrate and then applying heat treatment to the semiconductor substrate.
摘要:
To change a plurality of trenches to one flat empty space by two-dimensionally forming the trenches on the surface of a semiconductor substrate and then applying heat treatment to the semiconductor substrate.
摘要:
To change a plurality of trenches to one flat empty space by two-dimensionally forming the trenches on the surface of a semiconductor substrate and then applying heat treatment to the semiconductor substrate.
摘要:
A semiconductor device includes a semiconductor substrate having a trench on a surface thereof and an embedding member embedding the interior of the trench therewith. While the section of the trench when cut by a first plane perpendicular to the direction of the depth of the trench is defined as a first section and the section of the trench when cut by a second plane perpendicular to the direction of the depth of the trench and closer to the bottom of the trench than the first plane is defined as a second section, the area of the first section is smaller than that of the second section and a minimum radius of curvature of the first section is smaller than a minimum radius of curvature of the second section. As a result, it is possible to lessen the concentration of the electric field into the bottom of the trench.
摘要:
A deep trench is formed in a silicon substrate. The inner surface of the trench is next coated with a thin polycrystalline silicon film (liner film) so as not to close the trench. A silicon germanium film (node electrode) is then formed on the thin polycrystalline silicon film so as not to close the trench. Next, a heat treatment is performed on the silicon germanium film thereby to flow only the silicon germanium so that the trench is filled.