摘要:
A method for forming a field effect transistor device employs a conformal spacer layer formed upon a gate electrode. The gate electrode is employed as a mask for forming a lightly doped extension region within the semiconductor substrate and the gate electrode and conformal spacer layer are employed as a mask for forming a source/drain region within the semiconductor substrate. An anisotropically etched shaped spacer material layer is formed upon the conformal spacer layer and isotropically etched to enhance exposure of the source/drain region prior to forming a silicide layer thereupon.
摘要:
A method for forming a field effect transistor device employs a conformal spacer layer formed upon a gate electrode. The gate electrode is employed as a mask for forming a lightly doped extension region within the semiconductor substrate and the gate electrode and conformal spacer layer are employed as a mask for forming a source/drain region within the semiconductor substrate. An anisotropically etched shaped spacer material layer is formed upon the conformal spacer layer and isotropically etched to enhance exposure of the source/drain region prior to forming a silicide layer thereupon.
摘要:
Semiconductor devices and methods for fabricating the same. The semiconductor device includes a resistance-reduced transistor with metallized bilayer overlying source/drain regions and gate electrode thereof. A first dielectric layer with a conductive contact overlies the resistance-reduced transistor. A second dielectric layer having a first conductive feature overlies the first dielectric layer. A third dielectric layer with a second conductive feature overlies the second dielectric layer, forming a conductive pathway down to the top surface of the metallized bilayer over one of the source/drain regions or the gate electrode layer.
摘要:
A semiconductor interconnect structure includes an organic and/or photosensitive etch buffer layer disposed over a contact surface. The structure further provides an interlevel dielectric formed over the etch buffer layer. A method for forming an interconnect structure includes etching to form an opening in the interlevel dielectric, the etching operation being terminated at or above the etch buffer layer. The etch buffer layer is removed to expose the contact surface using a removal process that may include wet etching, ashing or DUV exposure followed by developing or other techniques that do not result in damage to contact surface. The contact surface may be a conductive material such as silicide, salicide or a metal alloy.
摘要:
An integrated advanced method for forming a semiconductor device utilizes a sacrificial stress layer as part of a film stack that enables spatially selective silicide formation in the device. The low-resistance portion of the device to be silicided includes NMOS transistors and PMOS transistors. The stressed film may be a tensile or compressive nitride film. An annealing process is carried out prior to the silicide formation process. During the annealing process, the stressed nitride film preferentially remains over either the NMOS transistors or PMOS transistors, but not both, to optimize device performance. A tensile nitride film remains over the NMOS transistors but not the PMOS transistors while a compressive nitride film remains over the PMOS transistors but not the NMOS transistors, during anneal.
摘要:
A resistance-reduced semiconductor device and fabrication thereof. The semiconductor device of the invention includes a semiconductor device body exposing at least one silicon-containing portion, a metal silicide layer with a first resistivity overlying the silicon-containing portion and a conductor layer with a second resistivity overlying the metal silicide layer, wherein the second resistivity is smaller than the first resistivity.
摘要:
Semiconductor devices and methods for fabricating the same. The semiconductor device includes a resistance-reduced transistor with metallized bilayer overlying source/drain regions and gate electrode thereof. A first dielectric layer with a conductive contact overlies the resistance-reduced transistor. A second dielectric layer having a first conductive feature overlies the first dielectric layer. A third dielectric layer with a second conductive feature overlies the second dielectric layer, forming a conductive pathway down to the top surface of the metallized bilayer over one of the source/drain regions or the gate electrode layer.
摘要:
An integrated advanced method for forming a semiconductor device utilizes a sacrificial stress layer as part of a film stack that enables spatially selective silicide formation in the device. The low-resistance portion of the device to be silicided includes NMOS transistors and PMOS transistors. The stressed film may be a tensile or compressive nitride film. An annealing process is carried out prior to the silicide formation process. During the annealing process, the stressed nitride film preferentially remains over either the NMOS transistors or PMOS transistors, but not both, to optimize device performance. A tensile nitride film remains over the NMOS transistors but not the PMOS transistors while a compressive nitride film remains over the PMOS transistors but not the NMOS transistors, during anneal.
摘要:
A semiconductor interconnect structure includes an organic and/or photosensitive etch buffer layer disposed over a contact surface. The structure further provides an interlevel dielectric formed over the etch buffer layer. A method for forming an interconnect structure includes etching to form an opening in the interlevel dielectric, the etching operation being terminated at or above the etch buffer layer. The etch buffer layer is removed to expose the contact surface using a removal process that may include wet etching, ashing or DUV exposure followed by developing or other techniques that do not result in damage to contact surface. The contact surface may be a conductive material such as silicide, salicide or a metal alloy.
摘要:
An ultra shallow junction (USJ) FET device and method for forming the same with improved control over SDE or LDD doped region interfaces to improve device performance and reliability is provided, the method including providing a semiconductor substrate; forming a gate structure comprising a gate dielectric, an overlying gate electrode, and first offset spacers adjacent either side of the gate electrode; forming at least one doped semiconductor layer comprising dopants over a respective source and drain region adjacent the respective first offset spacers; forming second offset spacers adjacent the respective first offset spacers; and, thermally treating the at least one semiconductor layer to cause out-diffusion of the dopants to form doped regions in the semiconductor substrate.