摘要:
A method for making a semiconductor device is described. That method comprises forming a hard mask and an etch stop layer on a patterned sacrificial gate electrode layer. After first and second spacers are formed on opposite sides of that patterned sacrificial layer, the patterned sacrificial layer is removed to generate a trench that is positioned between the first and second spacers. At least part of the trench is filled with a metal layer.
摘要:
In a metal gate replacement process, strain may be selectively induced in the channels of NMOS and PMOS transistors. For example, a material having a higher coefficient of thermal expansion than the substrate may be used to form the gate electrodes of PMOS transistors. A material with a lower coefficient of thermal expansion than that of the substrate may be used to form the gate electrodes of NMOS transistors.
摘要:
A method for making a semiconductor device is described. That method comprises forming an oxide layer on a substrate, and forming a high-k dielectric layer on the oxide layer. The oxide layer and the high-k dielectric layer are then annealed at a sufficient temperature for a sufficient time to generate a gate dielectric with a graded dielectric constant.
摘要:
A semiconductor device is described. That semiconductor device comprises a high-k gate dielectric layer that is formed on a substrate that applies strain to the high-k gate dielectric layer, and a metal gate electrode that is formed on the high-k gate dielectric layer.
摘要:
A method for making a semiconductor device is described. That method comprises converting a hydrophobic surface of a substrate into a hydrophilic surface, and forming a high-k gate dielectric layer on the hydrophilic surface.
摘要:
Complementary metal oxide semiconductor integrated circuits may be formed with NMOS and PMOS transistors having different gate dielectrics. The different gate dielectrics may be formed, for example, by a subtractive process. The gate dielectrics may differ in material, thickness, or formation techniques, as a few examples.
摘要:
A method for making a titanium carbide layer is described. That method comprises alternately introducing a carbon containing precursor and a titanium containing precursor into a chemical vapor deposition reactor, while a substrate is maintained at a selected temperature. The reactor is operated for a sufficient time, and pulse times are selected for the carbon containing precursor and the titanium containing precursor, to form a titanium carbide layer of a desired thickness and workfunction on the substrate.
摘要:
In a metal gate replacement process, strain may be selectively induced in the channels of NMOS and PMOS transistors. For example, a material having a higher coefficient of thermal expansion than the substrate may be used to form the gate electrodes of PMOS transistors. A material with a lower coefficient of thermal expansion than that of the substrate may be used to form the gate electrodes of NMOS transistors.
摘要:
A gate structure may be utilized as a mask to form source and drain regions. Then the gate structure may be removed to form a gap and spacers may be formed in the gap to define a trench. In the process of forming a trench into the substrate, a portion of the source drain region is removed. Then the substrate is filled back up with an epitaxial material and a new gate structure is formed thereover. As a result, more abrupt source drain junctions may be achieved.
摘要:
A semiconductor device is described. That semiconductor device comprises a high-k gate dielectric layer that is formed on a substrate that applies strain to the high-k gate dielectric layer, and a metal gate electrode that is formed on the high-k gate dielectric layer.