摘要:
The invention relates to a semiconductor device and a method for manufacturing such a semiconductor device. A semiconductor device according to an embodiment of the invention may comprise: a substrate; a device region located on the substrate; and at least one stress introduction region separated from the device region by an isolation structure, with stress introduced into at least a portion of the at least one stress introduction region, wherein the stress introduced into the at least a portion of the at least one stress introduction region is produced by utilizing laser to illuminate an amorphized portion comprised in the at least one stress introduction region to recrystallize the amorphized portion. The semiconductor device according to an embodiment of the invention produces stress in a simpler manner and thereby improves the performance of the device.
摘要:
A transistor device comprising epitaxial LDD and Halo regions and a method of manufacturing the same are disclosed. According to embodiments of the present disclosure, the method may comprise: forming a gate stack on a semiconductor substrate; forming a gate spacer which covers the top of the gate stack and sidewalls of the gate stack; forming source/drain grooves; epitaxially growing a Halo material layer in the source/drain grooves, wherein the Halo material layer has a first doping element therein; epitaxially growing source/drain regions which apply stress to a channel region of the device, wherein the source/drain regions have a second doping element, opposite in conductivity to the first doping element, therein; isotropically etching the source/drain regions to remove portions of the source/drain regions, wherein the etching also removes portions of the Halo material layer directly under the gate spacer and extends to the channel region to some extent, wherein remaining portions of the Halo material layer constitute Halo regions of the device; and epitaxially growing an LDD material layer to form LDD regions of the device.
摘要:
The present invention relates to a method of introducing strain into a channel and a device manufactured by using the method, the method comprising: providing a semiconductor substrate; forming a channel in the semiconductor substrate; forming a first gate dielectric layer on the channel; forming a polysilicon gate layer on the first gate dielectric layer; doping or implanting a first element into the polysilicon gate layer; removing a part of the first gate dielectric layer and polysilicon gate layer to thereby form a first gate structure; forming a source/drain extension region in the channel; forming spacers on both sides of the first gate structure; forming a source/drain in the channel; and performing annealing such that lattice change occurs in the polysilicon that is doped or implanted with the first element in the high-temperature crystallization process, thereby producing a first strain in the polysilicon gate layer, and introducing the first strain through the gate dielectric layer to the channel. This method has greater process flexibility and simple process complexity with no additional process cost.
摘要:
A method of manufacturing a semiconductor device is disclosed. In one embodiment, the method comprises: forming a gate stack on a substrate; etching the substrate on both sides of the gate stack to form C-shaped source/drain grooves; and wet-etching the C-shaped source/drain grooves to form Σ-shaped source/drain grooves. With this method, it is possible to effectively increase stress applied to a channel region, to accurately control a depth of the source/drain grooves, and to reduce roughness of side walls and bottom portions of the grooves and thus reduce defects by etching the C-shaped source/drain grooves and then further wet-etching them to form the Σ-shaped source/drain grooves.
摘要:
The disclosure relates to a gate structure, a semiconductor device and methods for forming the same. An embodiment of the disclosure provides a method for forming a gate structure, including: providing a substrate; forming an interface layer on the substrate; forming a gate dielectric layer on the interface layer; forming a gate dielectric capping layer on the gate dielectric layer; forming an etching stop layer on the gate dielectric capping layer; forming an oxygen scavenging element layer on the etching stop layer; forming an oxygen scavenging element capping layer on the oxygen scavenging element layer; performing Post-Metallization Annealing; performing etching until the etching stop layer is exposed; forming a work function adjustment layer on the etching stop layer; and forming a gate layer on the work function adjustment layer.
摘要:
A method for forming a gate structure, comprising: providing a substrate, where the substrate includes a nMOSFET area and a pMOSFET area, each of the nMOSFET area and the pMOSFET area has a gate trench, and each of the gate trenches is provided at a bottom portion with a gate dielectric layer; forming a gate dielectric capping layer on the substrate; forming an etching stop layer on the gate dielectric capping layer; forming an oxygen scavenging element layer on the etching stop layer; forming a first work function adjustment layer on the oxygen scavenging element layer; etching the first work function adjustment layer above the nMOSFET area; forming a second work function adjustment layer on the surface of the substrate; metal layer depositing and annealing to fill the gate trenches with a metal layer; and removing the metal layer outside the gate trenches.
摘要:
An embodiment of the present disclosure provides a method for forming a gate structure, comprising: providing a substrate, where the substrate includes a nMOSFET area and a pMOSFET area, each of the nMOSFET area and the pMOSFET area has a gate trench, and each of the gate trenches is provided at a bottom portion with a gate dielectric layer; forming a gate dielectric capping layer on a surface of the substrate; forming an oxygen scavenging element layer on the gate dielectric capping layer; forming an etching stop layer on the oxygen scavenging element layer; forming a work function adjustment layer on the etching stop layer; performing metal layer deposition and annealing process to fill the gate trenches with a metal layer; and removing the metal layer outside the gate trenches.
摘要:
A method of fabricating a single crystal silicon rod may include forming an insulation layer on a substrate, forming a hole in the insulation layer, selectively growing silicon in the hole, forming a silicon layer on the hole and on the insulation layer, forming a rod pattern on the silicon layer in a direction that is non-radial with respect to the hole, and melting the silicon layer and crystallizing the silicon layer by illuminating a laser beam on the silicon layer where the rod pattern is formed to generate a nucleation site at a position corresponding to the hole. According to the method, a single crystal silicon rod having no defects may be formed.
摘要:
The invention relates to a semiconductor device and a method for manufacturing such a semiconductor device. A semiconductor device according to an embodiment of the invention may comprise: a substrate; a device region located on the substrate; and at least one stress introduction region separated from the device region by an isolation structure, with stress introduced into at least a portion of the at least one stress introduction region, wherein the stress introduced into the at least a portion of the at least one stress introduction region is produced by utilizing laser to illuminate an amorphized portion comprised in the at least one stress introduction region to recrystallize the amorphized portion. The semiconductor device according to an embodiment of the invention produces stress in a simpler manner and thereby improves the performance of the device.
摘要:
A thin film transistor comprises an Si-based channel having a nonlinear electron-moving path, a source and a drain disposed at both sides of the channel, a gate disposed above the channel, an insulator interposed between the channel and the gate, and a substrate supporting the channel and the source and the drain disposed at either side of the channel respectively.