摘要:
Described herein are a device utilizing a gate electrode material with a single work function for both the pMOS and nMOS transistors where the magnitude of the transistor threshold voltages is modified by semiconductor band engineering and article made thereby. Further described herein are methods of fabricating a device formed of complementary (pMOS and nMOS) transistors having semiconductor channel regions which have been band gap engineered to achieve a low threshold voltage.
摘要:
A method of forming a transistor gate stack having an annealed gate dielectric layer begins by providing a substrate that includes a first and second spacer separated by a trench. A conformal high-k gate dielectric layer is deposited on the substrate and within the trench with a thickness that ranges from 3 Å to 60 Å. Next, a capping layer is deposited on the high-k gate dielectric layer that substantially fills the trench and covers the high-k gate dielectric layer. The high-k gate dielectric layer is then annealed at a temperature that is greater than or equal to 600° C. The capping layer is removed to expose an annealed high-k gate dielectric layer. A metal layer is then deposited on the annealed high-k gate dielectric layer. A CMP process may be used to remove excess material and complete formation of the transistor gate stack.
摘要:
A structure to form an energy well within a Carbon nanotube is described. The structure includes a doped semiconductor region and an undoped semiconductor region. The Carbon nanotube is between the doped semiconductor region and the undoped semiconductor region. The structure also includes a delta doped semiconductor region. The undoped semiconductor region is between the Carbon nanotube and the delta doped region. The delta doped semiconductor region is doped opposite that of the doped semiconductor region.
摘要:
A method for fabricating a field-effect transistor with a gate completely wrapping around a channel region is described. Ion implantation is used to make the oxide beneath the channel region of the transistor more etchable, thereby allowing the oxide to be removed below the channel region. Atomic layer deposition is used to form a gate dielectric and a metal gate entirely around the channel region once the oxide is removed below the channel region.
摘要:
A method of forming a transistor gate stack having an annealed gate dielectric layer begins by providing a substrate that includes a first and second spacer separated by a trench. A conformal high-k gate dielectric layer is deposited on the substrate and within the trench with a thickness that ranges from 3 Å to 60 Å. Next, a capping layer is deposited on the high-k gate dielectric layer that substantially fills the trench and covers the high-k gate dielectric layer. The high-k gate dielectric layer is then annealed at a temperature that is greater than or equal to 600° C. The capping layer is removed to expose an annealed high-k gate dielectric layer. A metal layer is then deposited on the annealed high-k gate dielectric layer. A CMP process may be used to remove excess material and complete formation of the transistor gate stack.
摘要:
A method including introducing an implant of a dopant species into an active region of a device substrate, the dopant species comprising a conductivity type such that a conductivity of the implant is the same as a conductivity of a well of the active region wherein the introduction is aligned to junction regions of a device structure. An apparatus and system comprising an active device region of a substrate, the active device region comprising a well of a first conductivity, junction regions of a different second conductivity formed in the active region and separated by a channel and an implant of a dopant species in the well, the dopant species comprising a conductivity type such that a conductivity of the implant is the same as the first conductivity of the well and the implant is aligned to the junction regions.
摘要:
A top metal gate carbon nanotube transistor may be provided which has acceptable electrical characteristics. The transistor may be formed over a structure including a semiconductor substrate made of an epitaxial layer and covered with an insulating layer. The carbon nanotubes may be deposited thereover, source and drains defined, and a metal gate electrode applied over a high dielectric constant gate dielectric. The processing may be such that the carbon nanotubes are protected from high temperature processing and excessively oxidizing atmospheres.
摘要:
The fabrication of a tri-gate transistor formed with a replacement gate process is described. A nitride dummy gate, in one embodiment, is used allowing the growth of epitaxial source and drain regions immediately adjacent to the dummy gate. This reduces the external resistance.
摘要:
Described herein are a device utilizing a gate electrode material with a single work function for both the pMOS and nMOS transistors where the magnitude of the transistor threshold voltages is modified by semiconductor band engineering and article made thereby. Further described herein are methods of fabricating a device formed of complementary (pMOS and nMOS) transistors having semiconductor channel regions which have been band gap engineered to achieve a low threshold voltage.
摘要:
Embodiments of the invention provide a substrate with a surface having different crystal orientations in different areas. Embodiments of the invention provide a substrate with a portion having a crystal orientation and another portion having a crystal orientation. N— and P-type devices may both be formed on the substrate, with each type of device having the proper crystal orientation for optimum performance.