Abstract:
A vertical tunneling FET (TFET) provides low-power, high-speed switching performance for transistors having critical dimensions below 7 nm. The vertical TFET uses a gate-all-around (GAA) device architecture having a cylindrical structure that extends above the surface of a doped well formed in a silicon substrate. The cylindrical structure includes a lower drain region, a channel, and an upper source region, which are grown epitaxially from the doped well. The channel is made of intrinsic silicon, while the source and drain regions are doped in-situ. An annular gate surrounds the channel, capacitively controlling current flow through the channel from all sides. The source is electrically accessible via a front side contact, while the drain is accessed via a backside contact that provides low contact resistance and also serves as a heat sink. Reliability of vertical TFET integrated circuits is enhanced by coupling the vertical TFETs to electrostatic discharge (ESD) diodes.
Abstract:
A method for making a semiconductor device may include forming first and second spaced apart semiconductor active regions with an insulating region therebetween, forming at least one sacrificial gate line extending between the first and second spaced apart semiconductor active regions and over the insulating region, and forming sidewall spacers on opposing sides of the at least one sacrificial gate line. The method may further include removing portions of the at least one sacrificial gate line within the sidewall spacers and above the insulating region defining at least one gate line end recess, filling the at least one gate line end recess with a dielectric material, and forming respective replacement gates in place of portions of the at least one sacrificial gate line above the first and second spaced apart semiconductor active regions.
Abstract:
A semiconductor device includes an electrostatic discharge (ESD) device formed adjacent to a first fin field effect transistor (finFET). The device includes a substrate, the first finFET and the ESD device. The first finFET is formed such that it includes finFET fins extending from the substrate. The ESD device includes two vertically stacked PN diodes including vertically stacked first, second, third and fourth layers. The first layer is an N doped layer and is disposed directly over the substrate, the second layer is a P doped layer and is disposed directly over the first layer, the third layer is an N doped layer and is disposed directly over the second layer and the fourth layer is a P doped layer and is disposed directly over the third layer.
Abstract:
An integrated circuit includes a substrate supporting a transistor having a source region and a drain region. A high dopant concentration delta-doped layer is present on the source region and drain region of the transistor. A set of contacts extend through a pre-metal dielectric layer covering the transistor. A silicide region is provided at a bottom of the set of contacts. The silicide region is formed by a salicidation reaction between a metal present at the bottom of the contact and the high dopant concentration delta-doped layer on the source region and drain region of the transistor.
Abstract:
A semiconductor device that a fin structure, and a gate structure present on a channel region of the fin structure. A composite spacer is present on a sidewall of the gate structure including an upper portion having a first dielectric constant, a lower portion having a second dielectric constant that is less than the first dielectric constant, and an etch barrier layer between sidewalls of the first and second portion of the composite spacer and the gate structure. The etch barrier layer may include an alloy including at least one of silicon, boron and carbon.
Abstract:
A DAC may include a decoder configured to receive a digital input signal, and first and second sub-DACs coupled in parallel to the decoder, each of the first and second sub-DACs having first and second LSB banks, and an MSB bank coupled between the first and second LSB banks. The decoder may be configured to selectively control the first and second LSB banks, and the MSB bank based upon the digital input signal. The DAC may include an output network coupled to the first and second sub-DACs and configured to generate an analog output signal related to the digital input signal.
Abstract:
A tensile strained silicon layer is patterned to form a first group of fins in a first substrate area and a second group of fins in a second substrate area. The second group of fins is covered with a tensile strained material, and an anneal is performed to relax the tensile strained silicon semiconductor material in the second group of fins and produce relaxed silicon semiconductor fins in the second area. The first group of fins is covered with a mask, and silicon-germanium material is provided on the relaxed silicon semiconductor fins. Germanium from the silicon germanium material is then driven into the relaxed silicon semiconductor fins to produce compressive strained silicon-germanium semiconductor fins in the second substrate area (from which p-channel finFET devices are formed). The mask is removed to reveal tensile strained silicon semiconductor fins in the first substrate area (from which n-channel finFET devices are formed).
Abstract:
Elongated fins of a first semiconductor material are insulated from and formed over an underlying substrate layer. Elongated gates of a second semiconductor material are then formed to cross over the elongated fins at channel regions, and the gate side walls are covered by sidewall spacers. A protective material is provided to cover the underlying substrate layer and define sidewall spacers on side walls of the elongated fins between the elongated gates. The first semiconductor material and insulating material of the elongated fins located between the protective material sidewall spacers (but not under the elongated gates) is removed to form trenches aligned with the channel regions. Additional semiconductor material is then epitaxially grown inside each trench between the elongated gates to form source-drain regions adjacent the channel regions formed by the elongated fins of the first semiconductor material located under the elongated gates.
Abstract:
A hybrid communications network system uses the propagation limitations of Visible Light Communications (VLC) to define location data for portable VLC devices. The location data can be used with specific location-based profiles to provide location-based services to functional zones. The hybrid communications allow location data and connectivity to be available among other communications technologies on the hybrid network.
Abstract:
An intelligent lighting and sensor system is disclosed that includes a processor, a memory arranged to store program logic software, the program logic software executable by the processor, a light control module in communication with at least one light source in which the operation of the light control module is directed according to the program logic software that is executed by the processor, and a sensor interface in communication with a plurality of sensor devices in which the operation of the sensor interface is directed according to the program logic software that is executed by the processor.