Abstract:
The present invention facilitates semiconductor fabrication by providing methods of fabrication that form metal silicide gates and mitigate formation of silicide region defects near channel regions. A dielectric layer is formed over a semiconductor device (306). Polysilicon is deposited on the dielectric layer to form a gate electrode layer (308) and a patterning operation is then performed to form gate structures (310). Source/drain regions are formed (320) and the gate structures are tuned to obtain a selected work function (324). A metal is then selectively deposited on only the gate structures (328) and a thermal process is performed that reacts the deposited metal with polysilicon of the gate layer to obtain a metal suicide material (330).
Abstract:
The present invention facilitates semiconductor fabrication by providing methods of fabrication that selectively form high-k dielectric layers within NMOS regions. An I/O dielectric layer is formed in core and I/O regions of a semiconductor device (506). The I/O dielectric layer is removed (508) from the core region of the device. A core dielectric layer is formed in the core region (510). A barrier layer is deposited and patterned to expose the NMOS devices of the core region (512). The core dielectric layer is removed from the core NMOS devices (514). A high-k dielectric layer is formed (514) over the core and I/O regions. Then, the high-k dielectric layer is removed (512) from PMOS regions/devices of the core region and the NMOS and PMOS regions/devices of the I/O region.
Abstract:
Transistors and fabrication methods are presented in which a semiconductor body is deposited in a cavity of a temporary form structure above a semiconductor starting structure. The formed semiconductor body can be epitaxial silicon deposited in the form cavity over a silicon substrate, and includes three body portions, two of which are doped to form source/drains, and the other forming a transistor channel that overlies the starting structure. A gate structure is formed along one or more sides of the channel body portion to create a MOS transistor.
Abstract:
A method for improving high-κ gate dielectric film (104) properties. The high-κ film (104) is subjected to a two step anneal sequence. The first anneal is performed in a reducing ambient (106) with low partial pressure of oxidizer to promote film relaxation and increase by-product diffusion and desorption. The second anneal is performed in an oxidizing ambient (108) with a low partial pressure of reducer to remove defects and impurities.
Abstract:
The present invention pertains to forming a transistor in the absence of hydrogen, or in the presence of a significantly reduced amount of hydrogen. In this manner, a high-k material can be utilized to form a gate dielectric layer in the transistor and facilitate device scaling while mitigating defects that can be introduced into the high-k material by the presence of hydrogen and/or hydrogen containing compounds.
Abstract:
Fabrication methods are presented in which a semiconductor body is deposited in a cavity of a temporary form structure above a semiconductor starting structure. The formed semiconductor body can be epitaxial silicon deposited in the form cavity over a silicon substrate, and includes three body portions, two of which are doped to form source/drains, and the other forming a transistor channel that overlies the starting structure. A gate structure is formed along one or more sides of the channel body portion to create a MOS transistor.
Abstract:
Embodiments disclosed herein describe systems and methods for a drinking container with an integrated valve that uses surface tension to control the flow of fluid.
Abstract:
The instant invention concerns Francisella bacteria mediated degradation of alkaline phosphatase (AP). Detection of AP degradation may be used to determine the presence of Francisella bacteria in a sample. Furthermore, methods for identifying and treating Francisella infections by detecting AP degradation are described. Methods of the invention also concerns methods for treating Francisella infection by inhibiting AP degradation.
Abstract:
Dual gate dielectric layers are formed on a semiconductor substrate for MOS transistor fabrication. A first dielectric layer (30) is formed on a semiconductor substrate (10). A first plasma nitridation process is performed on said first dielectric layer. The first dielectric layer (30) is removed in regions of the substrate and a second dielectric layer (50) is formed in these regions. A second plasma nitridation process is performed on the first dielectric layer and the second dielectric. MOS transistors (160, 170) are then fabricated using the dielectric layers (30, 50).