摘要:
A method for ion implanting a tip source and drain region and halo region for a tri-gate field-effect transistor is described. A silicon body is implanted, in one embodiment, from six different angles to obtain ideal regions.
摘要:
A method utilizing a common 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.
摘要:
A semiconductor device is described. That semiconductor device comprises a high-k gate dielectric layer that is formed over a channel that is positioned within a substrate, and a metal gate electrode that is formed on the high-k gate dielectric layer. The high-k gate dielectric layer has off-state leakage characteristics that are superior to those of a silicon dioxide based gate dielectric, and on-state mobility characteristics that are superior to those of a high-k gate dielectric that comprises an isotropic material.
摘要:
A method for making a semiconductor device is described. That method comprises forming on a substrate a dielectric layer and a sacrificial structure that comprises a first layer and a second layer, such that the second layer is formed on the first layer and is wider than the first layer. After the sacrificial structure is removed to generate a trench, a metal gate electrode is formed within the trench.
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 process capable of integrating both planar and non-planar transistors onto a bulk semiconductor substrate, wherein the channel of all transistors is definable over a continuous range of widths.
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.
摘要:
An NMOS transistor may be formed with a biaxially strained silicon upper layer having a thickness of greater than 500 Angstroms. The resulting NMOS transistor may have good performance and may exhibit reduced self-heating. A PMOS transistor may be formed with both a biaxially and uniaxially strained silicon germanium layer. A source substrate bias applied to both NMOS and PMOS transistors can enhance their performance.
摘要:
A transistor may be formed of different layers of silicon germanium, a lowest layer having a graded germanium concentration and upper layers having constant germanium concentrations such that the lowest layer is of the form Si1-xGex. The highest layer may be of the form Si1-yGey on the PMOS side. A source and drain may be formed of epitaxial silicon germanium of the form Si1-zGez on the PMOS side. In some embodiments, x is greater than y and z is greater than x in the PMOS device. Thus, a PMOS device may be formed with both uniaxial compressive stress in the channel direction and in-plane biaxial compressive stress. This combination of stress may result in higher mobility and increased device performance in some cases.
摘要翻译:晶体管可以由不同层的硅锗形成,具有梯度锗浓度的最低层和具有恒定锗浓度的上层,使得最底层具有Si 1-x Ge Ge > x SUB>。 在PMOS侧,最高层可以是Si 1-y N y O y的形式。 源极和漏极可以由PMOS侧的Si 1-z N z z z的外延硅锗形成。 在一些实施例中,在PMOS器件中,x大于y且z大于x。 因此,PMOS器件可以在通道方向上具有单轴压应力和面内双轴压应力。 在某些情况下,应力的这种组合可能导致较高的移动性和增加的设备性能。
摘要:
Embodiments of the invention provide a device with a metal gate, a high-k gate dielectric layer, source/drain extensions a distance beneath the metal gate, and lateral undercuts in the sides of the metal gate.