摘要:
A semiconductor device has two transistors of different structure from each other. One of transistors is P-type and the other is N-type. One of the transistors includes a gate structure in which a polysilicon layer contacts a gate insulation film while the other transistor includes a gate structure in which a metal layer contacts a gate insulation film.
摘要:
In a method of manufacturing a semiconductor device, a recess is formed in an active region of a substrate. A gate insulation layer is formed in the first recess. A barrier layer is formed on the gate insulation layer. A preliminary nucleation layer having a first resistance is formed on the barrier layer. The preliminary nucleation layer is converted into a nucleation layer having a second resistance substantially smaller than the first resistance. A conductive layer is formed on the nucleation layer. The conductive layer, the nucleation layer, the barrier layer and the gate insulation layer are partially etched to form a buried gate structure including a gate insulation layer pattern, a barrier layer pattern, a nucleation layer pattern and a conductive layer pattern.
摘要:
In a semiconductor device with dual gates and a method of manufacturing the same, a dielectric layer and first and second metallic conductive layers are successively formed on the semiconductor substrate having first and second regions. The second metallic conductive layer which is formed on the first metallic conductive layer of the second region is etched to form a metal pattern. The first metallic conductive layer is etched using the metal pattern as an etching mask. A polysilicon layer is formed on the dielectric layer and the metal pattern. The first gate electrode is formed by etching portions of the polysilicon layer, the metal pattern, and the first metallic conductive layer of the first region. The second gate electrode is formed by etching a portion of the polysilicon layer formed directly on the dielectric layer of the second region.
摘要:
In a semiconductor device with dual gates and a method of manufacturing the same, a dielectric layer and first and second metallic conductive layers are successively formed on the semiconductor substrate having first and second regions. The second metallic conductive layer which is formed on the first metallic conductive layer of the second region is etched to form a metal pattern. The first metallic conductive layer is etched using the metal pattern as an etching mask. A polysilicon layer is formed on the dielectric layer and the metal pattern. The first gate electrode is formed by etching portions of the polysilicon layer, the metal pattern, and the first metallic conductive layer of the first region. The second gate electrode is formed by etching a portion of the polysilicon layer formed directly on the dielectric layer of the second region.
摘要:
A semiconductor device has two transistors of different structure from each other. One of transistors is P-type and the other is N-type. One of the transistors includes a gate structure in which a polysilicon layer contacts a gate insulation film while the other transistor includes a gate structure in which a metal layer contacts a gate insulation film.
摘要:
A semiconductor device formed on a strained silicon layer and a method of manufacturing such a semiconductor device are disclosed. In accordance with this invention, a first silicon germanium layer is formed on a single crystalline silicon substrate; a second silicon germanium layer is formed on the first silicon germanium layer, the second silicon germanium layer having a concentration of germanium in a range of about 1 percent by weight to about 15 percent by weight based on the total weight of the second silicon germanium layer; a strained silicon layer is formed on the second silicon germanium layer; an isolation layer is formed at a first portion of the strained silicon layer; a gate structure is formed on the strained silicon layer; and, source/drain regions are formed at second portions of the strained silicon layer adjacent to the gate structure to form a transistor.
摘要:
A method of forming a thin layer including providing a first single-crystalline silicon layer partially exposed through an opening in an insulation pattern and forming an epitaxial layer on the first single-crystalline silicon layer and forming an amorphous silicon layer on the insulation pattern, the amorphous silicon layer having a first portion adjacent the epitaxial layer and a second portion spaced apart from the first portion, wherein the amorphous silicon layer is formed on the insulation pattern at substantially the same rate at the first portion and at a second portion. The amorphous silicon layer may be formed to a uniform thickness without a thinning defect.
摘要:
A semiconductor device has two transistors of different structure from each other. One of transistors is P-type and the other is N-type. One of the transistors includes a gate structure in which a polysilicon layer contacts a gate insulation film while the other transistor includes a gate structure in which a metal layer contacts a gate insulation film.
摘要:
A semiconductor device having a dual gate is formed on a substrate having a dielectric layer. A first metallic conductive layer is formed on the dielectric layer to a first thickness, and annealed to have a reduced etching rate. A second metallic conductive layer is formed on the first metallic conductive layer to a second thickness that is greater than the first thickness. A portion of the second metallic conductive layer formed in a second area of the substrate is removed using an etching selectivity. A first gate structure having a first metallic gate including the first and the second metallic conductive layers is formed in a first area of the substrate. A second gate structure having a second metallic gate is formed in the second area. A gate dielectric layer is not exposed to an etching chemical due to the first metallic conductive layer, so its dielectric characteristics are not degraded.
摘要:
A method of forming a semiconductor device includes forming a three-dimensional structure formed of a semiconductor on a semiconductor substrate, and isotropically doping the three-dimensional structure by performing a plasma doping process using a first source gas and a second source gas. The first source gas includes n-type or p-type impurity elements, and the second source gas includes a dilution element regardless of the electrical characteristic of a doped region.