Abstract:
A symmetrical lateral bipolar junction transistor (SLBJT) is provided. The SLBJT includes a p-type semiconductor substrate, a n-type well, an emitter of a SLBJT situated in the n-type well, a base of the SLBJT situated in the n-type well and spaced from the emitter by a distance on one side of the base, a collector of the SLBJT situated in the n-type well and spaced from the base by the distance on an opposite side of the base, and an electrical connection to the substrate outside the n-type well. The SLBJT is used to characterize a transistor in a circuit by electrically coupling the SLBJT to a gate of the test transistor, applying a voltage to the gate, and characterizing aspect(s) of the test transistor under the applied voltage. The SLBJT protects the gate against damage to the gate dielectric.
Abstract:
The disclosure is directed to integrated circuit (IC) structures, and more particularly, to IC structures including a deep n-well that is self-aligned with a shallow trench isolation (STI). The integrated circuit structure may include: a first pair of isolation regions within a substrate; a first region of the substrate between the first pair of isolation regions having a first conductivity type; a second region of the substrate beneath the first pair of isolation regions and the first region of the substrate having a second conductivity type opposite the first conductivity type of the first region of the substrate, wherein the second region of the substrate includes a second pair of isolation regions that are self-aligned with and in contact with the first pair of isolation regions.
Abstract:
Field-effect transistor structures for a laterally-diffused metal-oxide-semiconductor (LDMOS) device and methods of forming a LDMOS device. First and second fins are formed on a substrate. A first well of a first conductivity type is arranged partially in the substrate and partially in the first fin. A second well of a second conductivity type is arranged partially in the substrate, partially in the first fin, and partially in the second fin. First and second source/drain regions of the second conductivity type are respectively formed within the first well in the first fin and within the second well in the second fin. Spaced-apart gate structures are formed that overlap with respective portions of the first fin. A doped region of the first conductivity type is arranged within the second well in the first fin between the first and second gate structures.
Abstract:
A method incudes forming a first plurality of fins having a first width in a first region of a semiconductor substrate. A second plurality of fins having a second width greater than the first width is formed in a second region of a semiconductor substrate. A doped region is formed in a surface portion of the second plurality of fins to define an anode region of a diode. A junction is defined between the doped region and a cathode region of the second plurality of fins. A first contact interfacing with the anode region is formed.
Abstract:
A method includes forming a first plurality of fins having a first width in a first region of a semiconductor substrate. A second plurality of fins having a second width greater than the first width is formed in a second region of a semiconductor substrate. A doped region is formed in a surface portion of the second plurality of fins to define an anode region of a diode. A junction is defined between the doped region and a cathode region of the second plurality of fins. A first contact interfacing with the anode region is formed.
Abstract:
A resistor device includes a resistor body disposed in a substrate and doped with a first type of dopant, an insulating layer disposed above the resistor body, and at least one gate structure disposed above the insulating layer and above the resistor body. A method includes applying a bias voltage to at least a first gate structure disposed above an insulating layer disposed above a resistor body disposed in a substrate and doped with a first type of dopant to affect a resistance of the resistor body.
Abstract:
Methods are presented for fabricating nanowire structures, such as one or more nanowire field effect transistors. The methods include, for instance: providing a substrate and forming a fin above the substrate so that the fin has a first sidewall including one or more elongate first sidewall protrusions and a second sidewall including one or more elongate second sidewall protrusions, with the one or more elongate second sidewall protrusions being substantially aligned with the one or more elongate first sidewall protrusions; and, anisotropically etching the fin with the elongate first sidewall protrusions and the elongate second sidewall protrusions to define the one or more nanowires. The etchant may be chosen to selectively etch along a pre-defined crystallographic plane, such as the (111) crystallographic plane, to form the nanowire structures.
Abstract:
Three-dimensional electrostatic discharge (ESD) semiconductor devices are fabricated together with three-dimensional non-ESD semiconductor devices. For example, an ESD diode and FinFET are fabricated on the same bulk semiconductor substrate. A spacer merger technique is used in the ESD portion of a substrate to create double-width fins on which the ESD devices can be made larger to handle more current.
Abstract:
Devices and methods for forming semiconductor devices with wider FinFETs for higher tunability of the varactor are provided. One method includes, for instance: obtaining an intermediate semiconductor device; applying a spacer layer over the semiconductor device; etching the semiconductor device to remove at least a portion of the spacer layer to expose the plurality of mandrels; removing the mandrels; etching the semiconductor device to remove a portion of the dielectric layer; forming at least one fin; and removing the spacer layer and the dielectric layer. One intermediate semiconductor device includes, for instance: a substrate; a dielectric layer over the substrate; a plurality of mandrels formed on the dielectric layer, the mandrels including a first set of mandrels and a second set of mandrels, wherein the first set of mandrels have a width twice as large as the second set of mandrels; and a spacer layer applied over the mandrels.
Abstract:
A method of forming a metal gate diode ESD protection device and the resulting device are provided. Embodiments include forming a metal gate diode including a metal gate on a substrate; forming an n-type cathode on a first side of the metal gate diode; and forming a p-type anode on a second side of the metal gate diode, opposite the first side.