摘要:
An integrated semiconductor structure containing at least one device formed upon a first crystallographic surface that is optimal for that device, while another device is formed upon a second different crystallographic surface that is optimal for the other device is provided. The method of forming the integrated structure includes providing a bonded substrate including at least a first semiconductor layer of a first crystallographic orientation and a second semiconductor layer of a second different crystallographic orientation. A portion of the bonded substrate is protected to define a first device area, while another portion of the bonded substrate is unprotected. The unprotected portion of the bonded substrate is then etched to expose a surface of the second semiconductor layer and a semiconductor material isregrown on the exposed surface. Following planarization, a first semiconductor device is formed in the first device region and a second semiconductor device is formed on theregrown material.
摘要:
A semiconductor device is formed by providing a substrate and forming a semiconductor-containing layer atop the substrate. A mask having a plurality of openings is then formed atop the semiconductor-containing layer, wherein adjacent openings of the plurality of openings of the mask are separated by a minimum feature dimension. Thereafter, an angled ion implantation is performed to introduce dopants to a first portion of the semiconductor-containing layer, wherein a remaining portion that is substantially free of dopants is present beneath the mask. The first portion of the semiconductor-containing layer containing the dopants is removed selective to the remaining portion of semiconductor-containing layer that is substantially free of the dopants to provide a pattern of sublithographic dimension, and the pattern is transferred into the substrate to provide a fin structure of sublithographic dimension.
摘要:
The present invention relates to a semiconductor device structure that includes at least one SRAM cell formed in a substrate. Such SRAM cell comprises two pull-up transistors, two pull-down transistors, and two pass-gate transistors. The pull-down transistors and the pass-gate transistors are substantially similar in channel widths and have substantially similar source-drain doping concentrations, while the SRAM cell has a beta ratio of at least 1.5. The substrate preferably comprises a hybrid substrate with at two isolated sets of regions, while carrier mobility in these two sets of regions differentiates by a factor of at least about 1.5. More preferably, the pull-down transistors of the SRAM cell are formed in one set of regions, and the pass-gate transistors are formed in the other set of regions, so that current flow in the pull-down transistors is larger than that in the pass-gate transistors.
摘要:
FET device structures are disclosed with the PFET and NFET devices having high-k dielectric gate insulators (10, 11) and metal containing gates. The metal layers (70, 71) of the gates in both the NFET and PFET devices have been fabricated from a single common metal layer. Due to the single common metal, device fabrication is simplified, requiring a reduced number of masks. Also, as a further consequence of using a single layer of metal for the gates of both type of devices, the terminal electrodes of NFETs and PFETs can be butted to each other in direct physical contact. Device thresholds are adjusted by the choice of the common metal material and oxygen exposure of the high-k dielectric. Threshold values are aimed for low power consumption device operation.