A method of forming a semiconductor structure is provided. The method includes providing a substrate comprising, from bottom to top, a handle substrate, an insulator layer and a germanium-containing layer. Next, hard mask material portions having an opening that exposes a portion of the germanium-containing layer are formed on the substrate. An etch is then performed through the opening to provide an undercut region in the germanium-containing layer. A III-V compound semiconductor material is grown within the undercut region by utilizing an aspect ratio trapping growth process. Next, portions of the III-V compound semiconductor material are removed to provide III-V compound semiconductor material portions located between remaining portions of the germanium-containing layer.

A semiconductor device or the like capable of preventing malfunction of a driver circuit is provided. In a driver circuit for driving a power device used for current supply, a transistor including an oxide semiconductor is used as a transistor in a circuit (specifically, for example, a level shift circuit) requiring a high withstand voltage. In addition, a transistor (for example, a silicon transistor or the like) capable of higher operation than a transistor including an oxide semiconductor is preferably used as a transistor in a circuit (specifically, for example, a buffer circuit, a flip-flop circuit, or the like) requiring a lower withstand voltage than the level shift circuit.

Circuits and devices for bidirectional normally-off switches are described. A circuit for a bidirectional normally-off switch includes a depletion mode transistor and an enhancement mode transistor. The depletion mode transistor includes a first source/drain node, a second source/drain node, a first gate, and a second gate. The enhancement mode transistor includes a third source/drain node and a fourth source/drain node, and a third gate. The third source/drain node is coupled to the first source/drain node.

This invention application provides a complementary metal-oxide-semiconductor field-effect transistor and method thereof. The transistor comprises a semiconductor substrate, a N-type field-effect transistor positioned in the semiconductor substrate, and a P-type field-effect transistor positioned in the semiconductor substrate and spaced apart the N-type field-effect transistor. N-type field-effect transistor includes a first germanium nanowire, a first III-V compound layer surrounding around the first germanium nanowire, a first potential barrier layer mounted on the first III-V compound layer, a first gate dielectric layer, a first gate, a first source region and a first drain region mounted on two sides of the first gate. P-type field-effect transistor includes a second germanium nanowire, a second III-V compound layer surrounding around the second germanium nanowire, a second potential barrier layer mounted on the second III-V compound layer, a second gate dielectric layer, a second gate, a second source region and a second drain region mounted on two sides of the second gate. The field-effect transistor can produce two-dimensional electron gases and two-dimensional electron hole gases, and the P-type and N-type field-effect transistors are gate-surrounding devices to enhance the carrier mobility of the complementary metal-oxide-semiconductor field-effect transistor.

A method includes forming one or more fin structures on a substrate, the one or more fin structures comprising a first material comprising a first lattice structure and the substrate comprising a second material comprising a second lattice structure. Forming the one or more fin structures on the substrate includes forming one or more trenches in the substrate, and growing the first material in the one or more trenches. The first lattice structure is different from the second lattice structure. The one or more fin structures are self-aligned by the one or more trenches.

A semiconductor structure includes a first device and a second device. The first device has a first surface. The first device includes a first active region defined by a first material system. The second device has a second surface. The second surface is coplanar with the first surface. The second device includes a second active region defined by a second material system. The second material system is different from the first material system.

A semiconductor device with a metal-containing layer, a first semiconductor layer, that is formed on top of the metal-containing layer, and a resistor that is formed in the metal-containing layer and that is contacted through the first semiconductor layer is provided. Furthermore, a method of manufacturing a semiconductor device is provided, wherein the method comprises manufacturing of a resistor with the following steps: formation of a metal-containing layer over a wafer, particularly a SOI wafer, formation of a first semiconductor layer on top of the metal-containing layer and formation of a contact through the semiconductor layer to the metal-containing layer.

A method of forming an active device on a semiconductor wafer includes the steps of: forming a plurality of semiconductor fins on at least a portion of a semiconductor substrate; forming a dielectric layer on at least a portion of the semiconductor substrate, the dielectric layer filling gaps between adjacent fins; forming a plurality of gate structures on an upper surface of the dielectric layer; forming a channel region on the dielectric layer and under at least a portion of the gate structures, the channel region comprising a first crystalline semiconductor material; forming source and drain epitaxy regions on an upper surface of the dielectric layer and between adjacent gate structures, the source and rain regions being spaced laterally from one another; and replacing the channel region with a second crystalline semiconductor material after high-temperature processing used in fabricating the active device has been completed.

A method is provided in which a III-V compound semiconductor channel material is grown from at least one exposed sidewall of a semiconductor mandrel that is present in an NFET device region. The III-V compound semiconductor channel material is grown after formation of any PFET devices and after formation of a middle-of-the-line (MOL) dielectric material within the NFET device region.

Methods of fabricating semiconductor device are provided including forming first and second material layers for a first transistor using epitaxial growth processes. A recess region is formed by partially etching the first and second material layers. Third and fourth material layers for a second transistor are formed using epitaxial growth processes.