摘要:
A method of fabricating a semiconductor device is disclosed. The method of fabricating a semiconductor device provides a semiconductor substrate; forming a gate stack overlying the semiconductor substrate; forming spacers each having a first inner spacer and a second outer spacer on sidewalls of the gate stack; forming a protective layer on sidewalls of the spacers, covering a part of the semiconductor substrate, wherein an etching selectivity of the protective layer is higher than that of the first inner spacer.
摘要:
A method of fabricating a semiconductor device is disclosed. The method of fabricating a semiconductor device provides a semiconductor substrate; forming a gate stack overlying the semiconductor substrate; forming spacers each having a first inner spacer and a second outer spacer on sidewalls of the gate stack; forming a protective layer on sidewalls of the spacers, covering a part of the semiconductor substrate, wherein an etching selectivity of the protective layer is higher than that of the first inner spacer.
摘要:
A CMOS device and manufacturing method thereof wherein a bilayer etch stop is used over a PMOS transistor, and a single etch stop layer is used for an NMOS transistor, for forming contacts to the source or drain of the CMOS device. A surface tension-reducing layer is disposed between the source or drain region of the PMOS transistor and an overlying surface tension-inducing layer. The surface tension-inducing layer may comprise a nitride material or carbon-containing material, and the surface tension-reducing layer may comprise an oxide material. Degradation of hole mobility in the PMOS transistor is prevented by the use of the surface tension-reducing layer of the bilayer etch stop.
摘要:
A CMOS device and manufacturing method thereof wherein a bilayer etch stop is used over a PMOS transistor, and a single etch stop layer is used for an NMOS transistor, for forming contacts to the source or drain of the CMOS device. A surface tension-reducing layer is disposed between the source or drain region of the PMOS transistor and an overlying surface tension-inducing layer. The surface tension-inducing layer may comprise a nitride material or carbon-containing material, and the surface tension-reducing layer may comprise an oxide material. Degradation of hole mobility in the PMOS transistor is prevented by the use of the surface tension-reducing layer of the bilayer etch stop.
摘要:
The present disclosure provides one embodiment of a semiconductor structure that includes a semiconductor substrate having a first region and a second region; a shallow trench isolation (STI) feature formed in the semiconductor substrate. The STI feature includes a first portion disposed in the first region and having a first thickness T1 and a second portion disposed in the second region and having a second thickness T2 greater than the first depth, the first portion of the STI feature being recessed from the second portion of the STI feature. The semiconductor structure also includes a plurality of fin active regions on the semiconductor substrate; and a plurality of conductive features disposed on the fin active regions and the STI feature, wherein one of the conductive features covers the first portion of the STI feature in the first region.
摘要:
A method for performing a stress memorization technique (SMT) a FinFET and a FinFET having memorized stress effects including multi-planar dislocations are disclosed. An exemplary embodiment includes receiving a FinFET precursor with a substrate, a fin structure on the substrate, an isolation region between the fin structures, and a gate stack over a portion of the fin structure. The gate stack separates a source region of the fin structure from a drain region of the fin structure and creates a gate region between the two. The embodiment also includes forming a stress-memorization technique (SMT) capping layer over at least a portion of each of the fin structures, isolation regions, and the gate stack, performing a pre-amorphization implant on the FinFET precursor by implanting an energetic doping species, performing an annealing process on the FinFET precursor, and removing the SMT capping layer.
摘要:
A strained channel MOSFET device with improved charge carrier mobility and method for forming the same, the method including providing a first and second FET device having a respective first polarity and second polarity opposite the first polarity on a substrate; forming a strained layer having a stress selected from the group consisting of compressive and tensile on the first and second FET devices; and, removing a thickness portion of the strained layer over one of the first and second FET devices to improve charge carrier mobility.
摘要:
An apparatus for characterizing capacitance and thickness of an insulating layer constructed between a conductive gate and a substrate has at least one test structure formed at a surface of a substrate. Each test structure has a bulk region formed of a semiconductor within the surface. Further the test structure has at least one source region and one drain region within the bulk region. A thin insulating layer is placed above the each source region, each drain region, and the bulk region. A conductive gate is placed above the thin insulating layer. A capacitance-voltage measuring device measures a capacitance value of the test structure, while forcing the bulk region between the source region and the drain region to be floating. An insulating layer thickness calculator determines the thickness of the insulating layer from the capacitance.
摘要:
A process for fabricating a MOSFET device featuring a channel region comprised with a silicon-germanium component is provided. The process features employ an angled ion implantation procedure to place germanium ions in a region of a semiconductor substrate underlying a conductive gate structure. The presence of raised silicon shapes used as a diffusion source for a subsequent heavily-doped source/drain region, the presence of a conductive gate structure, and the removal of dummy insulator previously located on the conductive gate structure allow the angled implantation procedure to place germanium ions in a portion of the semiconductor substrate to be used for the MOSFET channel region. An anneal procedure results in the formation of the desired silicon-germanium component in the portion of semiconductor substrate to be used for the MOSFET channel region.
摘要:
A process for fabricating a MOSFET device featuring a channel region comprised with a silicon-germanium component is provided. The process features employ an angled ion implantation procedure to place germanium ions in a region of a semiconductor substrate underlying a conductive gate structure. The presence of raised silicon shapes used as a diffusion source for a subsequent heavily doped source/drain region, the presence of a conductive gate structure, and the removal of dummy insulator previously located on the conductive gate structure allow the angled implantation procedure to place germanium ions in a portion of the semiconductor substrate to be used for the MOSFET channel region. An anneal procedure results in the formation of the desired silicon-germanium component in the portion of semiconductor substrate to be used for the MOSFET channel region.