Abstract:
A method for forming a portion of a semiconductor device structure (30) comprises providing a semiconductor-on-insulator substrate having a semiconductor active layer (34), an insulation layer (32), and a semiconductor substrate. A first isolation trench (40) is formed within the semiconductor active layer and a stressor material (42) is deposited on a bottom of the first trench, wherein the stressor material includes a dual-use film. A second isolation trench (44) is formed within the semiconductor active layer, wherein the second isolation trench is absent of the stressor material on a bottom of the second trench. The presence and absence of stressor material in the first and second isolation trenches, respectively, provides differential stress: (i) on one or more of N-type or P-type devices of the semiconductor device structure, (ii) for one or more of width direction or channel direction orientations, and (iii) to customize stress benefits of one or more of a or semiconductor-on-insulator substrate.
Abstract:
Methods for fabricating a stressed MOS device [30] is provided. One method comprises the steps of providing a monocrystalline semiconductor substrate [36] having a surface [32] and a channel [70] abutting the surface. A gate electrode [66] having a first edge [75] and a second edge [85] is formed overlying the monocrystalline semiconductor substrate. The substrate is anisotropically etched to form a first recess [82] aligned with the first edge [75] and a second recess [84] aligned with the second edge [85]. The substrate is further isotropically etched to form a third recess [96] in the substrate extending beneath the channel [70]. The third recess is filled with an expanding material [100] to exert an upward force [101] on the channel and the first [82] and second [84] recesses are filled with a contact material [HO]. Conductivity determining ions are implanted into the contact material [110] to form a source region [130] and a drain region [132] aligned with the first [75] and second edges [85], respectively.
Abstract:
Monolithic lattice-mismatched semiconductor heterostructures and methods for forming the same, such as by bonding patterned substrates with alternative active-area materials formed thereon to a rigid dielectric platform and then removing the highly- defective interface areas along with the underlying substrates to produce alternative active- area regions disposed over the insulator and substantially exhausted of misfit and threading dislocations.
Abstract:
A metal oxide semiconductor (MOS) field effect transistor device having isolation structure for single chip integration, wherein PMOS field effect transistor comprises: a first N-type well formed in the P-type substrate, a first P-type area formed in the first N-type well, a P+-type drain region formed in the first P-type area, a P+-type source region and a N+-type contact region form a first source electrode, the first N-type well surrounds P+-type source region and N+-type contact region of PMOSFET; NMOS field effect transistor comprises: a second N-type well formed in the P-type substrate, a second P-type area formed in the second N-type well, a N+-type drain region formed in the second N-type well, a N+-type source region and a P+-type contact region form a second source electrode, the second P-type area surrounds N+-type source region and P+-type contact region of NMOS field effect transistor, a plurality of separate P-type area are formed in P-type substrate to provide an isolation between the transistors.
Abstract:
According to the embodiments to the present disclosure, the process of making a dual strained channel semiconductor device (10) includes integrating strained Si (16) and compressed SiGe (28) with trench isolation (24) for achieving a simultaneous NMOS and PMOS performance enhancement. As described herein, the integration of NMOS and PMOS can be implemented in several ways to achieve NMOS and PMOS channels compatible with shallow trench isolation.
Abstract:
A planar substrate device (100) integrated with fin field effect transistors (FinFETs) and a method of manufâcture comprises a silicon-on-insulator (SOI) wafer (101) comprising a substrate (103); a buried insulator layer (105) over the substrate (103); and a semiconductor layer (115) over the buried insulator layer (105). The structure (100) further comprises a FinFET (130) over the buried insulator layer (105) and a field effect transistor (FET) (131) integrated in the substrate (103), wherein the FET (127) gate is planar to the FinFET gate (125). The structure (100) further comprises retrograde well regions (104, 106, 108, 110) configured in the substrate (103). In one embodiment, the structure (100) further comprises a shallow trench isolation region (111) configured in the substrate (103).
Abstract:
A field effect transistor (100) and method of fabricating the field effect transistor. The field effect transistor, including: a gate electrode (165) formed on a top surface (170) of a gate dielectric layer (155), the gate dielectric layer on a top surface (160) of a single-crystal silicon channel region (110), the single-crystal silicon channel region on a top surface of a Ge including layer (135), the Ge including layer on a top surface of a single-crystal silicon substrate (150), the Ge including layer between a first dielectric layer (215A) and a second dielectric layer (215B) on the top surface of the single-crystal silicon substrate.
Abstract:
A method for manufacturing a device including an n-type device and a p-type device. In an aspect of the invention, the method involves doping a portion of a semiconductor substrate and forming a gap in the semiconductor substrate by removing at least a portion of the doped portion of the semiconductor substrate. The method further involves growing a strain layer in at least a portion of the gap in the semiconductor substrate. For the n-type device, the strain layer is grown on at least a portion which is substantially directly under a channel of the n-type device. For the p-type device, the strain layer is grown on at least a portion which is substantially directly under a source region or drain region of the p-type device and not substantially under a channel of the p-type device.