摘要:
An embodiment of the invention is a method of making a semiconductor structure 10 where the spacer oxide layer 90 is formed by a hydrogen free precursor CVD process. Another embodiment of the invention is a semiconductor structure 10 having a spacer oxide layer 90 with a hydrogen content of less than 1%.
摘要:
An embodiment of the invention is a method of making a semiconductor structure 10 where the spacer oxide layer 90 is formed by a hydrogen free precursor CVD process. Another embodiment of the invention is a semiconductor structure 10 having a spacer oxide layer 90 with a hydrogen content of less than 1%.
摘要:
A silicon nitrate layer (110) is formed over a transistor gate (40) and source and drain regions (70). The as-formed silicon nitride layer (110) comprises a first tensile stress and a high hydrogen concentration. The as-formed silicon nitride layer (110) is thermally annealed converting the first tensile stress into a second tensile stress that is larger than the first tensile stress. Following the thermal anneal, the hydrogen concentration in the silicon nitride layer (110) is greater than 12 atomic percent.
摘要:
Oxide growth of a gate dielectric layer that occurs between processes used in the fabrication of a gate dielectric structure can be reduced. The reduction in oxide growth can be achieved by maintaining the gate dielectric layer in an ambient effective to mitigate oxide growth of the gate dielectric layer between at least two sequential process steps used in the fabrication the gate dielectric structure. Maintaining the gate dielectric layer in an ambient effective to mitigate oxide growth also improves the uniformity of nitrogen implanted in the gate dielectric.
摘要:
A method is disclosed for implanting and activating antimony as a dopant in a semiconductor substrate. A method is also disclosed for implanting and activating antimony to form a source/drain extension region in the formation of a transistor, in such a manner as to achieve high activation and avoid deactivation via subsequent exposure to high temperatures. This technique facilitates the formation of very thin source/drain regions that exhibit reduced sheet resistance while also suppressing short channel effects. Enhancements to these techniques are also suggested for more precise implantation of antimony to create a shallower source/drain extension, and to ensure formation of the source/drain extension region to underlap the gate. Also disclosed are transistors and other semiconductor components that include doped regions comprising activated antimony, such as those formed according to the disclosed methods.
摘要:
A method (100) of forming semiconductor structures (202) including high-temperature processing steps (step 118), incorporates the use of a high-temperature nitride-oxide mask (220) over protected regions (214) of the device (202). The invention has application in many different embodiments, including but not limited to, the formation of recess, strained device regions (224).
摘要:
The present application is directed to a method for forming a metal silicide layer. The method comprises providing a substrate comprising silicon and depositing a metal layer on the substrate. The metal layer is annealed within a first temperature range and for a first dwell time of about 10 milliseconds or less to react at least a portion of the metal with the silicon to form a silicide. An unreacted portion of the metal is removed from the substrate. The silicide is annealed within a second temperature range for a second dwell time of about 10 milliseconds or less.
摘要:
A MOS transistor structure comprising a gate dielectric layer (30), a gate electrode (40), and source and drain regions (70) are formed in a semiconductor substrate (10). First second and third dielectric layers (110), (120), and (130) are formed over the MOS transistor structure. The second and third dielectric structures (120), (130) are removed leaving a MOS transistor with a stressed channel region resulting in improved channel mobility characteristics.
摘要:
The present invention provides a method for manufacturing a semiconductor device and a method for manufacturing an integrated circuit including the semiconductor device. The method for manufacturing the semiconductor device (100), among other possible steps, includes forming a polysilicon gate electrode over a substrate (110) and forming source/drain regions (170) in the substrate (110) proximate the polysilicon gate electrode. The method further includes forming a blocking layer (180) over the source/drain regions (170), the blocking layer (180) comprising a metal silicide, and siliciding the polysilicon gate electrode to form a silicided gate electrode (150).
摘要:
A method of manufacturing a semiconductor device comprising removing a first oxide layer deposited over a semiconductor substrate, thereby exposing source and drain regions of the substrate. The first oxide layer is configured as an etch-stop for forming silicon nitride sidewall spacers of a gate structure located adjacent to the source and drain regions. The method further comprises depositing a second oxide layer selectively on the exposed source and drain regions and then removing lateral segments of the silicon nitride sidewall spacers.