摘要:
A multi-layered structure of a semiconductor device includes a substrate, and a heteroepitaxial layer having a low dislocation defect density on the substrate. The heteroepitaxial layer consists of a main epitaxial layer and at least one intermediate epitaxial layer sandwished in the main epitaxial layer. At their interface, the heteroepitaxial layer, i.e., the bottom portion of the main epitaxial layer, and the substrate have different lattice constants. Also, the intermediate epitaxial layer has a different lattice constant from that of the portions of the main epitaxial layer contiguous to the intermediate epitaxial layer. The intermediate epitaxial layer also has a thickness smaller than the net thickness of the main epitaxial layer such that the intermediate epitaxial layer absorbs the strain in the heteroepitaxial layer. Thus, it is possible to obtain a multi-layered structure comprising an epitaxial layer that is relatively thin and has a low dislocation defect density.
摘要:
There is provided a method of fabricating a MOS transistor using a total gate silicidation process. The method includes forming an insulated gate pattern on a semiconductor substrate. The insulated gate pattern includes a silicon pattern and a sacrificial layer pattern, which are sequentially stacked. Spacers covering sidewalls of the gate pattern are formed, and source/drain regions are formed by injecting impurity ions into the semiconductor substrate using the spacers and the gate pattern as ion injection masks. The silicon pattern is exposed by removing the sacrificial layer pattern on the semiconductor substrate having the source/drain regions. The exposed silicon pattern is fully converted into a gate silicide layer, and concurrently a source/drain silicide layer is selectively formed on the surface of the source/drain regions.
摘要:
Disclosed are processes and techniques for fabricating semiconductor substrates for the manufacture of semiconductor devices, particularly CMOS devices, that include selectively formed, high quality single crystal or monocrystalline surface regions exhibiting different crystal orientations. At least one of the surface regions will incorporate at least one faceted epitaxial semiconductor structure having surfaces that exhibit a crystal orientation different than the semiconductor region on which the faceted epitaxial semiconductor structure is formed. According, the crystal orientation in the channel regions of the NMOS and/or PMOS devices may be configured to improve the relative performance of at least one of the devices and allow corresponding redesign of the semiconductor devices fabricated using such a process.
摘要:
An at least penta-sided-channel type of FinFET transistor may include: a base; a semiconductor body formed on the base, the body being arranged in a long dimension to have source/drain regions sandwiching a channel region, at least the channel, in cross-section transverse to the long dimension, having at least five planar surfaces above the base; a gate insulator on the channel region of the body; and a gate electrode formed on the gate insulator.
摘要:
An at least penta-sided-channel type of FinFET transistor may include: a base; a semiconductor body formed on the base, the body being arranged in a long dimension to have source/drain regions sandwiching a channel region, at least the channel, in cross-section transverse to the long dimension, having at least five planar surfaces above the base; a gate insulator on the channel region of the body; and a gate electrode formed on the gate insulator.
摘要:
According to some embodiments of the invention, there is provided line photo masks that includes transistors having reinforcement layer patterns and methods of forming the same. The transistors and the methods provide a way of compensating a partially removed amount of a strained silicon layer during semiconductor fabrication processes. To the end, at least one gate pattern is disposed on an active region of a semiconductor substrate. Reinforcement layer patterns are formed to extend respectively from sidewalls of the gate pattern and disposed on a main surface of the semiconductor substrate. Each reinforcement layer pattern partially exposes each sidewall of the gate pattern. Impurity regions are disposed in the reinforcement layer patterns and the active region of the semiconductor substrate and overlap the gate pattern. Spacer patterns are disposed on the reinforcement layer patterns and partially cover the sidewalls of the gate pattern.
摘要:
Disclosed are processes and techniques for fabricating semiconductor substrates for the manufacture of semiconductor devices, particularly CMOS devices, that include selectively formed, high quality single crystal or monocrystalline surface regions exhibiting different crystal orientations. At least one of the surface regions will incorporate at least one faceted epitaxial semiconductor structure having surfaces that exhibit a crystal orientation different than the semiconductor region on which the faceted epitaxial semiconductor structure is formed. According, the crystal orientation in the channel regions of the NMOS and/or PMOS devices may be configured to improve the relative performance of at least one of the devices and allow corresponding redesign of the semiconductor devices fabricated using such a process.
摘要:
A multi-layered structure of a semiconductor device includes a substrate, and a heteroepitaxial layer having a low dislocation defect density on the substrate. The heteroepitaxial layer consists of a main epitaxial layer and at least one intermediate epitaxial layer sandwished in the main epitaxial layer. At their interface, the heteroepitaxial layer, i.e., the bottom portion of the main epitaxial layer, and the substrate have different lattice constants. Also, the intermediate epitaxial layer has a different lattice constant from that of the portions of the main epitaxial layer contiguous to the intermediate epitaxial layer. The intermediate epitaxial layer also has a thickness smaller than the net thickness of the main epitaxial layer such that the intermediate epitaxial layer absorbs the strain in the heteroepitaxial layer. Thus, it is possible to obtain a multi-layered structure comprising an epitaxial layer that is relatively thin and has a low dislocation defect density.
摘要:
Example embodiments relate to a method of manufacturing a semiconductor device. Other example embodiments relate to a method of manufacturing a metal-oxide-semiconductor (MOS) transistor having an epitaxial region disposed in a lower portion of sidewalls of a gate pattern. Provided is a method of manufacturing a MOS transistor having an epitaxial region which improves an epitaxial growth rate and which may have fewer defects. The method of manufacturing a MOS transistor having an epitaxial region may include forming a gate pattern on a semiconductor substrate, forming a first ion implantation region having a first damage profile by implanting first impurity ions into the semiconductor substrate using the gate pattern as an ion implantation mask, forming a second ion implantation region having a second damage profile adjacent to the first damage profile by implanting second impurity ions into the semiconductor substrate using the gate pattern as an ion implantation mask and partially etching a lower portion of sidewalls of the gate pattern and forming in-situ an epitaxial region on the etched semiconductor substrate.
摘要:
A semiconductor device includes a gate insulator and a gate electrode stacked on a substrate, a source/drain pattern which fills a recess region formed at opposite sides adjacent to the gate electrode, the source/drain pattern being made of silicon-germanium doped with dopants and a metal germanosilicide layer disposed on the source/drain pattern. The metal germanosilicide layer is electrically connected to the source/drain pattern. Moreover, a proportion of germanium amount to the sum of the germanium amount and silicon amount in the metal germanosilicide layer is lower than that of germanium amount to the sum of the germanium amount and silicon amount in the source/drain pattern.