摘要:
A semiconductor-on-insulator (SOI) device. The SOI device includes a semiconductor substrate layer; an insulator layer disposed on the substrate layer; a semiconductor active region disposed on the insulator layer, the active region including a source, a drain, and a body disposed therebetween, at least one of the source and the drain forming a hyperabrupt junction with the body; and a gate disposed on the body such that the gate, source, drain and body are operatively arranged to form a transistor. The at least one of the source and drain forming the hyperabrupt junction with the body includes a silicide region. The silicide region has a generally vertical interface, which is laterally spaced apart from the hyperabrupt junction by about 60 Å to about 150 Å.
摘要:
A method of forming a semiconductor-on-insulator (SOI) device. The method includes providing an SOI wafer having an active layer, a substrate and a buried insulator layer therebetween; defining an active region in the active layer; forming a source, a drain and body in the active region, the source and the drain forming respective hyperabrupt junctions with the body, the hyperabrupt junctions being formed by an SPE process which includes amorphizing the at least one of the source and the drain, implanting dopant ion species and recrystalizing at temperature of less than 700° C.; forming a gate disposed on the body such that the source, drain, body and gate are operatively arranged to form a transistor; and forming a silicide region in each of the source and the drain, the silicide regions being spaced from the respective hyperabrupt junctions by a lateral distance of less than about 100 Å.
摘要:
A method of forming a MOSFET device is provided. First lightly doped regions are formed, the first lightly doped regions including LDD extension regions of the device. Second very lightly doped regions are formed at least partially below the first lightly doped regions, respectively, the second very lightly doped regions having a dopant concentration less than the first lightly doped regions, and the second very lightly doped regions being implanted at a higher energy level than the first lightly doped regions.
摘要:
An SOI semiconductor and method for making the same includes a substrate and dielectric support structures that support a silicon body above the substrate. This creates a void underneath the silicon body and thereby reduces the capacitance between the source/drain regions on body and the substrate.
摘要:
In accordance with the present invention, an amorphous layer is formed in a crystalline substrate (e.g., the channel region of a MOSFET transistor) by, for example, implanting ions of an inert specie such as germanium. A dopant is implanted so that it overlaps with the amorphous layer. Subsequently, low temperature recrystallization of the amorphous layer leads to an abrupt retrograded layer of active dopant in the channel region of the MOSFET. This retrograded dopant layer could be formed before or after the formation of the gate electrode.
摘要:
One illustrative method disclosed herein involves forming a first fin for a first FinFET device in and above a semiconducting substrate, wherein the first fin is comprised of a first semiconductor material that is different from the material of the semiconducting substrate and, after forming the first fin, forming a second fin for a second FinFET device that is formed in and above the semiconducting substrate, wherein the second fin is comprised of a second semiconductor material that is different from the material of the semiconducting substrate and different from the first semiconductor material.
摘要:
One method involves providing a substrate comprised of first and second semiconductor materials, performing an etching process through a hard mask layer to define a plurality of trenches that define first and second portions of a fin for a FinFET device, wherein the first portion is the first material and the second portion is the second material, forming a layer of insulating material in the trenches, performing a planarization process on the insulating material, performing etching processes to remove the hard mask layer and reduce a thickness of the second portion, thereby defining a cavity, performing a deposition process to form a third portion of the fin on the second portion, wherein the third portion is a third semiconducting material that is different from the second material, and performing a process such that a post-etch upper surface of the insulating material is below an upper surface of the third portion.
摘要:
A method of forming a finFET transistor using a sidewall epitaxial layer includes forming a silicon germanium (SiGe) layer above an oxide layer above a substrate, forming a cap layer above the SiGe layer, removing portions of the SiGe layer and the cap layer to form a feature, forming sidewalls along lateral walls of the feature, and removing the feature.
摘要:
An asymmetric semiconductor device and a method of making a pair of the asymmetric devices. The semiconductor device includes a layer of semiconductor material having a source and a drain, and a dual work function gate disposed on the layer of semiconductor material to define a channel interposed between the source and the drain.
摘要:
A method for processing a semiconductor wafer transforms the wafer into one which has a plurality of surface semiconductor platforms for formation of integrated circuit elements thereupon. The platforms are connected to a subsurface bulk layer of semiconductor material via integrally-formed bridges of semiconductor material. The platforms are otherwise surrounded with an electrically-insulating material, thereby providing good insulation between adjacent of the platforms. The method includes the steps of placing a mask on a wafer surface of the wafer, forming a subsurface altered material beneath portions of the wafer surface not covered by the mask, creating exposure openings through the wafer surface to expose a portion of the subsurface altered material, selectively removing the subsurface altered material by selective etching, and filling the subsurface regions and the exposure openings with an electrically-insulating material. In an exemplary embodiment the mask includes a plurality of gate conductors. The wafer surface is bombarded with boron ions to create a subsurface boron-doped material, and the boron-doped material is removed using an appropriate selective etchant.