Abstract:
A planar transistor with improved performance has a source and a drain on a semiconductor substrate that includes a substantially undoped channel extending between the source and the drain. A gate is positioned over the substantially undoped channel on the substrate. Implanted source/drain extensions contact the source and the drain, with the implanted source/drain extensions having a dopant concentration of less than about 1 x 10 19 atoms/cm 3 ', or alternatively, less than one-quarter the dopant concentration of the source and the drain.
Abstract translation:具有改进性能的平面晶体管在半导体衬底上具有源极和漏极,其包括在源极和漏极之间延伸的基本上未掺杂的沟道。 栅极位于衬底上的基本上未掺杂的沟道上。 注入源极/漏极延伸部接触源极和漏极,其中注入的源极/漏极延伸部的掺杂剂浓度小于约1×10 19原子/ cm 3',或者可选地,小于源的掺杂剂浓度的四分之一,以及 排水。
Abstract:
A system and method to reduce power consumption in electronic devices is disclosed. The structures and methods can be implemented largely by reusing bulk CMOS process flows and manufacturing technology. The structures and methods relate to a Deeply Depleted Channel (DDC) design, allowing CMOS based devices to have a reduced sigma VT compared to conventional bulk CMOS and can allow the threshold voltage VT of FETs having dopants in the channel region to be set more precisely. The DDC design also has a strong body effect compared to conventional bulk CMOS transistors, which can allow for significant dynamic control of power consumption.
Abstract:
A gate dielectric layer (500, 566, or 700) of an insulated-gate field-effect transistor (110, 114, or 122) contains nitrogen having a vertical concentration profile specially tailored to prevent boron in the overlying gate electrode (502, 568, or 702) from significantly penetrating through the gate dielectric layer into the underlying channel zone (484, 554, or 684) while simultaneously avoiding the movement of nitrogen from the gate dielectric layer into the underlying semiconductor body. Damage which could otherwise result from undesired boron in the channel zone and from undesired nitrogen in the semiconductor body is substantially avoided.
Abstract:
A semiconductor structure, which serves as the core of a semiconductor fabrication platform, has a combination of empty- well regions and filled- well regions variously used by electronic elements, particularly insulated-gate field-effect transistors ("IGFETs"), to achieve desired electronic characteristics. A relatively small amount of semiconductor well dopant is near the top of an empty well. A considerable amount of semiconductor well dopant is near the top of a filled well. Some IGFETs (100, 102, 112, 114, 124, and 126) utilize empty wells (180, 182, 192, 194, 204, and 206) in achieving desired transistor characteristics. Other IGFETs (108, 110, 116, 118, 120, and 122) utilize filled wells (188, 190, 196, 198, 200, and 202) in achieving desired transistor characteristics. The combination of empty and filled wells enables the semiconductor fabrication platform to provide a wide variety of high-performance IGFETs from which circuit designers can select particular IGFETs for various analog and digital applications, including mixed-signal applications.
Abstract:
An extended-drain insulated-gate field-effect transistor contains first and second source/drain zones laterally separated by a channel zone constituted by part of a first well region A gate dielectric layer overlies the channel zone A gate electrode overlies the gate dielectric layer above the channel zone The first source/drain zone is normally the source The second S/D zone, normally the drain, is at least partially constituted with a second well region A well-separating portion of the semiconductor body extends between the well regions and is more lightly doped than each well region The configuration of the well regions cause the maximum electric field in the IGFETs portion of the semiconductor body to occur well below the upper semiconductor surface, typically at or close to where the well regions are closest to each other The IGFET's operating characteristics are stable with operational time.