摘要:
A dielectric and isolation lower fin material is described that is useful for fin-based electronics. In some examples, a dielectric layer is on first and second sidewalls of a lower fin. The dielectric layer has a first upper end portion laterally adjacent to the first sidewall of the lower fin and a second upper end portion laterally adjacent to the second sidewall of the lower fin. An isolation material is laterally adjacent to the dielectric layer directly on the first and second sidewalls of the lower fin and a gate electrode is over a top of and laterally adjacent to sidewalls of an upper fin. The gate electrode is over the first and second upper end portions of the dielectric layer and the isolation material.
摘要:
A method of forming a double-gated junction field effect transistors (JFET) and a tri-gated metal-oxide-semiconductor field effect transistor (MOSFET) on a common substrate is provided. The double-gated JFET is formed in a first region of a substrate by forming a semiconductor gate electrode contacting sidewall surfaces of a first channel region of a first semiconductor fin and a top surface of a portion of a first fin cap atop the first channel region. The tri-gated MOSFET is formed in a second region of the substrate by forming a metal gate stack contacting a top surface and sidewall surfaces of a second channel region of a second semiconductor fin.
摘要:
A vertical junction field effect transistor (JFET) is supported by a semiconductor substrate that includes a source region within the semiconductor substrate doped with a first conductivity-type dopant. A fin of semiconductor material doped with the first conductivity-type dopant has a first end in contact with the source region and further includes a second end and sidewalls between the first and second ends. A drain region is formed of first epitaxial material grown from the second end of the fin and doped with the first conductivity-type dopant. A gate structure is formed of second epitaxial material grown from the sidewalls of the fin and doped with a second conductivity-type dopant.
摘要:
A monolithic bi-directional device provides bi-directional power flow and bi-directional blocking of high-voltages. The device includes a first transistor having a first drain formed over a first channel layer that overlays a substrate, and a second transistor that includes a second drain formed over a second channel layer that overlays the substrate. The substrate forms a common source for both the first transistor and the second transistor.
摘要:
A monolithic bi-directional device provides bi-directional power flow and bi-directional blocking of high-voltages. The device includes a first transistor having a first drain formed over a first channel layer that overlays a substrate, and a second transistor that includes a second drain formed over a second channel layer that overlays the substrate. The substrate forms a common source for both the first transistor and the second transistor.
摘要:
A junction gate field-effect transistor (JFET) includes a substrate, a source region formed in the substrate, a drain region formed in the substrate, a channel region formed in the substrate, and at least one gate region formed in the substrate. The channel region connects the source and drain regions. The at least one gate region is configured to cause a depletion region in one of the source and drain regions.
摘要:
Electronic circuits and methods are provided for various applications including signal amplification. An exemplary electronic circuit comprises a MOSFET and a dual-gate JFET in a cascode configuration. The dual-gate JFET includes top and bottom gates disposed above and below the channel. The top gate of the JFET is controlled by a signal that is dependent upon the signal controlling the gate of the MOSFET. The control of the bottom gate of the JFET can be dependent or independent of the control of the top gate. The MOSFET and JFET can be implemented as separate components on the same substrate with different dimensions such as gate widths.
摘要:
A semiconductor device includes a first conduction type semiconductor substrate, a first conduction type semiconductor deposition layer, a trench, second conduction type wells, a JFET region, a first conduction type first source region, a first source region, a trench-type source electrode, a gate insulator film, a gate electrode, and a drain electrode. The trench is formed substantially perpendicularly to the semiconductor deposition layer so that the semiconductor deposition layer exposes to a bottom of the trench. The second conduction type second source region are formed in the first conduction type first source region. The trench-type source electrode is in contact with the first source region, the second source region, and the first conduction type semiconductor deposition layer to configure a Schottky junction.
摘要:
A transistor arrangement includes a first transistor having a drift region and a number of second transistors, each having a source region, a drain region and a gate electrode. The second transistors are coupled in series to form a series circuit that is coupled in parallel with the drift region of the first transistor.
摘要:
A junction field effect transistor comprising: a semiconductor substrate having a first conductivity type; a channel region having a second conductivity type different from the first conductivity type, and being formed in a surface of the semiconductor substrate; a first buried region having the second conductivity type, being formed within the channel region, and having an impurity concentration higher than the channel region; a first gate region having the first conductivity type, and being formed in a surface of the channel region; and first drain/source region and a second drain/source region both having the second conductivity type, which are formed each on an opposite side of the first gate region in the surface of the channel region, in which the first buried region is not formed below the second drain/source region, but is formed below the first drain/source region.