摘要:
In a process of fabricating a narrow channel width PMOSFET device, the improvement of affecting reduction of negative bias temperature instability by use of F2 side wall implantation, comprising:a) forming a shallow trench isolation (STI) region in a substrate;b) forming a gate on a gate oxide in the substrate;c) forming a liner layer in said shallow trench isolation region and subjecting the liner layer to oxidation to form a STI liner oxidation layer;d) implanting F2 into side walls of the STI liner oxidation layer at a large tilted angle in sufficient amounts to affect reduction of negative bias temperature instability after a high density plasma fill of the STI F2 implanted liner oxidation layer; ande) filling the STI F2 implanted structure from step d) with a high density plasma (HDP) fill to affect reduction of negative bias temperature instability.
摘要:
This invention generally relates to a process for suppressing silicon self-interstitial diffusion near the substrate/epitaxial layer interface of an epitaxial silicon wafer having a heavily doped silicon substrate and a lightly doped silicon epitaxial layer. Interstitial diffusion into the epitaxial layer is suppressed by a silicon self-interstitial sink layer comprising dislocation loops.
摘要:
A method of implanting ions is disclosed which comprises the steps of: (a) producing a volume of gas phase molecules of material of the form C n H x wherein n and x are integers, and n ‰¥ 2, and x ‰¥ 0; (b) ionizing the C n H x molecules to form C n H y + or C n H y - , wherein y is an integer such that y>0; and (c) accelerating the ionized molecules by an electric field into a target.
摘要:
A method for improving the SiGe bipolar yield as well as fabricating a SiGe heterojunction bipolar transistor is provided. The inventive method includes ion-implanting carbon C, into at one of the following regions of the device: the collector region (16), the sub-collector region (14), the extrinsic base regions (29), and the collector-base junction region (27). In a preferred embodiment each of the aforesaid regions include C implants.
摘要:
A transistor is fabricated upon a semiconductor substrate, where the yield strength or elasticity of the substrate is enhanced or otherwise adapted. A strain inducing layer is formed over the transistor to apply a strain thereto to alter transistor operating characteristics, and more particularly to enhance the mobility of carriers within the transistor. Enhancing carrier mobility allows transistor dimensions to be reduced while also allowing the transistor to operate as desired. However, high strain and temperature associated with fabricating the transistor result in deleterious plastic deformation. The yield strength of the silicon substrate is therefore adapted by incorporating nitrogen into the substrate, and more particularly into source/drain extension regions and/or source/drain regions of the transistor. The nitrogen can be readily incorporated during transistor fabrication by adding it as part of source/drain extension region formation and/or source/drain region formation. The enhanced yield strength of the substrate mitigates plastic deformation of the transistor due to the strain inducing layer.
摘要:
The present invention relates to a method for the patterning of a stack comprising elements that do not form volatile compounds during conventional reactive ion etching. More specifically said element(s) are Lanthanide elements such as Ytterbium (Yb) and the patterning preferably relates to the dry etching of silicon and/or germanium comprising structures (e.g. gates) doped with a Lanthanide e.g. Ytterbium (Yb doped gates). In case said silicon and/or germanium comprising structure is a gate electrode the silicon and/or germanium is doped with a Lanthanide (e.g. Yb) for modeling the work function of a gate electrode.
摘要:
Quality of epitaxial semiconductor substrates (7) treated by carbon gettering is evaluated precisely and quickly to use only good-quality ones for manufacturing good-property semiconductor devices, such as solid- state imaging devices. After carbon implanted regions (4) and carbon non-implanted regions (5) are made along the surface of a Si substrate (1) by selectively ion-implanting carbon, a Si epitaxial layer (6) is grown on the surface (1a) of the Si substrate (1) to obtain a Si epitaxial substrate (7). Recombination lifetime or surface photo voltage is measured at a portion of the Si epitaxial layer (6) located above the carbon non-implanted region (5), and the result is used to evaluate acceptability of the Si epitaxial substrate (7). Thus, strictly selected good-quality Si epitaxial substrates (7) alone are used to manufacture solid-state imaging devices or other semiconductor devices.