Abstract:
A complementary metal oxide semiconductor (CMOS)-integrated junction field effect transistor (JFET) has reduced scale and reduced noise. An exemplary JFET has a substrate layer of one dopant type with a gate layer of that dopant type disposed on the substrate, a depletion channel of a second dopant type disposed on the first gate layer, and a second gate layer of the first dopant type disposed on the depletion channel and proximate a surface of the transistor. The second gate layer can separate the depletion channel from the surface, and the depletion channel separates the first gate layer from the second gate layer.
Abstract:
Provided is a semiconductor device that can be manufactured at low cost and that can reduce a reverse leak current, and a manufacturing method thereof. A semiconductor device has: a source region and a drain region having a body region therebetween; a source trench that reaches the body region, penetrating the source region; a body contact region formed at the bottom of the source trench; a source electrode embedded in the source trench; and a gate electrode that faces the body region. The semiconductor device also has: an n-type region for a diode; a diode trench formed reaching the n-type region for a diode; a p+ region for a diode that forms a pn junction with the n-type region for a diode at the bottom of the diode trench; and a schottky electrode that forms a schottky junction with the n-type region for a diode at side walls of the diode trench.
Abstract:
Disclosed are methods and devices that involve formation of alternating layers of different semiconductor materials in the channel region of FinFET devices. The methods involve forming such alternating layers of different semiconductor materials in a cavity formed above the substrate fin and thereafter forming a gate structure around the fin using gate first or gate last techniques.
Abstract:
An object is to provide a deposition method in which a gallium oxide film is formed by a DC sputtering method. Another object is to provide a method for manufacturing a semiconductor device using a gallium oxide film as an insulating layer such as a gate insulating layer of a transistor. An insulating film is formed by a DC sputtering method or a pulsed DC sputtering method, using an oxide target including gallium oxide (also referred to as GaOX). The oxide target includes GaOX, and X is less than 1.5, preferably more than or equal to 0.01 and less than or equal to 0.5, further preferably more than or equal to 0.1 and less than or equal to 0.2. The oxide target has conductivity, and sputtering is performed in an oxygen gas atmosphere or a mixed atmosphere of an oxygen gas and a rare gas such as argon.
Abstract:
A non-planar JFET device having a thin fin structure is provided. A fin is formed projecting upwardly from or through a top surface of a substrate, where the fin has a first semiconductor layer portion formed from a first semiconductor material of a first conductivity type. The first semiconductor layer portion has a source region and a drain region, a channel region extending between the source region and the drain region. Two or more channel control regions are formed adjoining the channel region for generating charge depletion zones at and extending into the channel region for thereby controlling current conduction through the channel region. A gate is provided so as to adjoin and short together the at least two channel control regions from the outer sides of the channel control regions.
Abstract:
A memory array that includes a SOI substrate and lateral bipolar junction transistors (BJTs) fabricated on the SOI substrate. The BJTs form first and second inverters cross coupled to form a memory cell. A read circuit outputs the binary state of the memory cell. A power supply is configured to supply a Vdd voltage to the read circuit and to supply a Vcc and a Vee voltage to the first set of lateral bipolar transistors and the second set of lateral bipolar transistors, wherein the Vee voltage is at least zero volts and the Vcc voltage is greater than the Vee voltage and is equal to or less than the Vdd voltage.
Abstract:
A passive implementation of an image reject mixer (IRM), capable of operating at very high frequency, is manufactured in a variety of silicon processes. The IRM comprises a quad MOS multiplier and a lumped-element hybrid, resulting in a passive IRM, operative at radio frequencies (RF) of tens of GHz with an intermediate frequency (IF) of several GHz. The RF+ and RF− signals are provided to two quad MOS multipliers. A local oscillator signal (LO) is used to provide LO+ and LO− signals to one of the multipliers and by providing the LO to a phase shifter, generated are a ninety degree shifted LO+ and LO− signals provided to the other multiplier. Providing the hybrids with the outputs of both multipliers and selecting an appropriate IF signal from each of the hybrids ensures the proper operation of the passive IRM.
Abstract:
A non-planar JFET device having a thin fin structure is provided. A fin is formed projecting upwardly from or through a top surface of a substrate, where the fin has a first semiconductor layer portion formed from a first semiconductor material of a first conductivity type. The first semiconductor layer portion has a source region and a drain region, a channel region extending between the source region and the drain region. Two or more channel control regions are formed adjoining the channel region for generating charge depletion zones at and extending into the channel region for thereby controlling current conduction through the channel region. A gate is provided so as to adjoin and short together the at least two channel control regions from the outer sides of the channel control regions.
Abstract:
An example embodiment is a memory array. The memory array includes a SOI substrate and lateral bipolar junction transistors (BJTs) fabricated on the SOI substrate. The BJTs form first and second inverters cross coupled to form a memory cell. A read circuit outputs the binary state of the memory cell. A power supply is configured to supply a Vdd voltage to the read circuit and to supply a Vcc and a Vee voltage to the first set of lateral bipolar transistors and the second set of lateral bipolar transistors, wherein the Vee voltage is at least zero volts and the Vcc voltage is greater than the Vee voltage and is equal to or less than the Vdd voltage.
Abstract:
Methods, devices, and systems integrating Fin-JFETs and Fin-MOSFETs are provided. One method embodiment includes forming at least on Fin-MOSFET on a substrate and forming at least on Fin-JFET on the substrate.