摘要:
A method of making a silicon-on-insulator (SOI) semiconductor device includes etching an undercut isolation trench into an SOI substrate, the SOI substrate comprising a bottom substrate, a buried oxide (BOX) layer formed on the bottom substrate, and a top SOI layer formed on the BOX layer, wherein the undercut isolation trench extends through the top SOI layer and the BOX layer and into the bottom substrate such that a portion of the undercut isolation trench is located in the bottom substrate underneath the BOX layer. The undercut isolation trench is filled with an undercut fill comprising an insulating material to form an undercut isolation region. A field effect transistor (FET) device is formed on the top SOI layer adjacent to the undercut isolation region, wherein the undercut isolation region extends underneath a source/drain region of the FET.
摘要:
A method of forming a semiconductor structure includes providing an active layer and forming adjacent gate structures on the active layer. The gate structures each have sidewalls such that first spacers are formed on the sidewalls. A raised region is epitaxially grown on the active layer between the adjacent gate structures and at least one trench that extends through the raised region and through the active region is formed, whereby the at least one trench separates the raised region into a first raised region corresponding to a first transistor and a second raised region corresponding to a second transistor. The first raised region and second raised region are electrically isolated by the at least one trench.
摘要:
A structure has at least one field effect transistor having a gate stack disposed between raised source drain structures that are adjacent to the gate stack. The gate stack and raised source drain structures are disposed on a surface of a semiconductor material. The structure further includes a layer of field dielectric overlying the gate stack and raised source drain structures and first contact metal and second contact metal extending through the layer of field dielectric. The first contact metal terminates in a first trench formed through a top surface of a first raised source drain structure, and the second contact metal terminates in a second trench formed through a top surface of a second raised source drain structure. Each trench has silicide formed on sidewalls and a bottom surface of at least a portion of the trench. Methods to fabricate the structure are also disclosed.
摘要:
A method of forming different structures of a semiconductor device using a single mask and a hybrid photoresist. The method includes: applying a first photoresist layer on a semiconductor substrate; patterning the first photoresist layer using a photomask to form a first patterned photoresist layer; using the first patterned photoresist layer to form a first structure of a semiconductor device; removing the first patterned photoresist layer; applying a second photoresist layer on the semiconductor substrate; patterning the second photoresist layer using the photomask to form a second patterned photoresist layer; using the second patterned photoresist layer to form a second structure of a semiconductor device; removing the second patterned photoresist layer; and wherein either the first or the second photoresist layer is a hybrid photoresist layer comprising a hybrid photoresist.
摘要:
A method of forming a transistor device includes forming a patterned gate structure over a semiconductor substrate; forming a spacer layer over the semiconductor substrate and patterned gate structure; removing horizontally disposed portions of the spacer layer so as to form a vertical sidewall spacer adjacent the patterned gate structure; and forming a raised source/drain (RSD) structure over the semiconductor substrate and adjacent the vertical sidewall spacer, wherein the RSD structure has a substantially vertical sidewall profile so as to abut the vertical sidewall spacer and produce one of a compressive and a tensile strain on a channel region of the semiconductor substrate below the patterned gate structure.
摘要:
In a circuit structure, PFET devices have a gate dielectric including a high-k dielectric, a gatestack with a metal, a p-source/drain and silicide layer formed over the p-source/drain; NFET devices include a gate dielectric including a high-k dielectric, a gatestack with a metal, an n-source/drain and silicide layer formed over the n-source/drain. An epitaxial SiGe is present underneath and in direct contact with the PFET gate dielectric, while the epitaxial SiGe is absent underneath the NFET gate dielectric.
摘要:
An ETSOI transistor and a capacitor are formed respectively in a transistor and capacitor region thereof by etching through an ETSOI and thin BOX layers in a replacement gate HK/MG flow. The capacitor formation is compatible with an ETSOI replacement gate CMOS flow. A low resistance capacitor electrode makes it possible to obtain a high quality capacitor or varactor. The lack of topography during dummy gate patterning are achieved by lithography in combination accompanied with appropriate etch.
摘要:
A semiconductor device including a substrate having at least one nitride material lined isolation cavity; and a hafnium containing dielectric fill at least partially contained in and at least partially covering at least a portion of the at least one nitride lined isolation cavity.
摘要:
A semiconductor device includes a substrate having at least one nitride material lined isolation cavity; and a hafnium containing dielectric fill at least partially contained in and at least partially covering at least a portion of the at least one nitride lined isolation cavity.
摘要:
A method of forming a semiconductor structure which includes an extremely thin silicon-on-insulator (ETSOI) semiconductor structure having a PFET portion and an NFET portion, a gate structure in the PFET portion and the NFET portion, a high quality nitride spacer adjacent to the gate structures in the PFET portion and the NFET portion and a doped faceted epitaxial silicon germanium raised source/drain (RSD) in the PFET portion. An amorphous silicon layer is formed on the RSD in the PFET portion. A faceted epitaxial silicon RSD is formed on the ETSOI adjacent to the high quality nitride in the NFET portion. The amorphous layer in the PFET portion prevents epitaxial growth in the PFET portion during formation of the RSD in the NFET portion. Extensions are ion implanted into the ETSOI underneath the gate structure in the NFET portion.