Abstract:
Semiconductor devices and related fabrication methods are provided. An exemplary fabrication method involves forming a pair of gate structures having a dielectric region disposed between a first gate structure of the pair and a second gate structure of the pair, and forming a voided region in the dielectric region between the first gate structure and the second gate structure. The first and second gate structures each include a first gate electrode material, wherein the method continues by removing the first gate electrode material to provide second and third voided regions corresponding to the gate structures and forming a second gate electrode material in the first voided region, the second voided region, and the third voided region.
Abstract:
A semiconductor device includes a high-k metal gate electrode structure that is positioned above an active region, has a top surface that is positioned at a gate height level, and includes a high-k dielectric material and an electrode metal. Raised drain and source regions are positioned laterally adjacent to the high-k metal gate electrode structure and connect to the active region, and a top surface of each of the raised drain and source regions is positioned at a contact height level that is below the gate height level. An etch stop layer is positioned above the top surface of the raised drain and source regions and a contact element connects to one of the raised drain and source regions, the contact element extending through the etch stop layer and a dielectric material positioned above the high-k metal gate electrode structure and the raised drain and source regions.
Abstract:
Disclosed herein are various methods of forming replacement gate structures and conductive contacts on semiconductor devices and devices incorporating the same. One exemplary device includes a plurality of gate structures positioned above a semiconducting substrate, at least one sidewall spacer positioned proximate respective sidewalls of the gate structures, and a metal silicide region in a source/drain region of the semiconducting substrate, the metal silicide region extending laterally so as to contact the sidewall spacer positioned proximate each of the gate structures. Furthermore, the device also includes, among other things, a conductive contact positioned between the plurality of gate structures, the conductive contact having a lower portion that conductively contacts the metal silicide region and an upper portion positioned above the lower portion, wherein the lower portion is laterally wider than the upper portion and extends laterally so as to contact the sidewall spacers positioned proximate each of the gate structures.
Abstract:
A method of manufacturing a semiconductor device is provided including providing an SOI substrate comprising a semiconductor bulk substrate, a buried insulation layer and a semiconductor layer, forming a shallow trench isolation in the SOI substrate, forming a FET in and over the SOI substrate, and forming a contact to a source or drain region of the FET that is positioned adjacent to the source or drain region, wherein forming the shallow trench isolation includes forming a trench in the SOI substrate, filling a lower portion of the trench with a first dielectric layer, forming a buffer layer over the first dielectric material layer, the buffer layer having a material different from a material of the first dielectric layer, and forming a second dielectric layer over the buffer layer and of a material different from the material of the buffer layer.
Abstract:
A method of forming matched PFET/NFET spacers with differential widths for SG and EG structures and a method of forming differential width nitride spacers for SG NFET and SG PFET structures and PFET/NFET EG structures and respective resulting devices are provided. Embodiments include providing PFET SG and EG structures and NFET SG and EG structures; forming a first nitride layer over the substrate; forming an oxide liner; forming a second nitride layer on sidewalls of the PFET and NFET EG structures; removing horizontal portions of the first nitride layer and the oxide liner over the PFET SG and EG structures; forming RSD structures on opposite sides of each of the PFET SG and EG structures; removing horizontal portions of the first nitride layer and the oxide liner over the NFET SG and EG structures; and forming RSD structures on opposite sides of each of the NFET SG and EG structures.
Abstract:
A transistor element of a sophisticated semiconductor device includes a gate electrode structure including a metal-containing electrode material instead of the conventionally used highly doped semiconductor material. The metal-containing electrode material may be formed in an early manufacturing stage, thereby reducing overall complexity of patterning the gate electrode structure in approaches in which the gate electrode structure is formed prior to the formation of the drain and source regions. Due to the metal-containing electrode material, high conductivity at reduced parasitic capacitance may be achieved, thereby rendering the techniques of the present disclosure as highly suitable for further device scaling.
Abstract:
A method of manufacturing a trench isolation of a semiconductor device is provided including providing a silicon-on-insulator (SOI) substrate comprising a semiconductor bulk substrate, a buried oxide layer formed on the semiconductor bulk substrate and a semiconductor layer formed on the buried oxide layer, forming a trench through the semiconductor layer and extending at least partially into the buried oxide layer, forming a liner at sidewalls of the trench, deepening the trench into the semiconductor bulk substrate, filling the deepened trench with a flowable dielectric material, and performing an anneal of the flowable dielectric material.
Abstract:
A method of forming a semiconductor device includes providing a silicon-on-insulator substrate comprising a semiconductor bulk substrate, a buried insulation layer formed on the semiconductor bulk substrate and a semiconductor layer formed on the buried insulation layer, providing at least one N-type metal-oxide semiconductor gate structure being an NZG gate structure having a gate insulation layer over the semiconductor layer and at least one P-type metal-oxide semiconductor gate structure being a PZG gate structure having a gate insulation layer over the semiconductor layer, the NZG and PZG gate structures being electrically separated from each other.
Abstract:
An integrated circuit product is disclosed including an SOI structure including a bulk semiconductor substrate, a buried insulation layer positioned on the bulk semiconductor substrate and a semiconductor layer positioned on the insulation layer, wherein, in a first region of the SOI structure, the semiconductor layer and the buried insulation layer are removed and, in a second region of the SOI structure, the semiconductor layer and the buried insulation layer are present above the bulk semiconductor substrate. The product further includes a semiconductor bulk device comprising a first gate structure positioned on the bulk semiconductor substrate in the first region and an SOI semiconductor device comprising a second gate structure positioned on the semiconductor layer in the second region, wherein the first and second gate structures have a final gate height substantially extending to a common height level above an upper surface of the bulk semiconductor substrate.
Abstract:
A method of forming a semiconductor device is provided including providing a semiconductor-on-insulator (SOI) wafer comprising a first semiconductor layer comprising a first material component and formed on a buried oxide (BOX) layer, and forming a channel region of a P-channel transistor device, including forming a second semiconductor layer only over a first portion of the first semiconductor layer, wherein the second semiconductor layer comprises the first material component and a second material component different from the first material component, forming an opening in the first semiconductor layer outside the first portion and subsequently performing a thermal anneal to push the second material component from the second semiconductor layer into the first semiconductor layer.