摘要:
A semiconductor structure is provided that includes a semiconductor oxide layer having features. The semiconductor oxide layer having the features is located between an active semiconductor layer and a handle substrate. The semiconductor structure includes a planarized top surface of the active semiconductor layer such that the semiconductor oxide layer is beneath the planarized top surface. The features within the semiconductor oxide layer are mated with a surface of the active semiconductor layer.
摘要:
Deep trench capacitor structures and methods of manufacture are disclosed. The method includes forming a deep trench structure in a wafer comprising a substrate, buried oxide layer (BOX) and silicon (SOI) film. The structure includes a wafer comprising a substrate, buried insulator layer and a layer of silicon on insulator layer (SOI) having a single crystalline structure throughout the layer. The structure further includes a first plate in the substrate and an insulator layer in direct contact with the first plate. A doped polysilicon is in direct contact with the insulator layer and also in direct contact with the single crystalline structure of the SOI.
摘要:
A dielectric mandrel structure is formed on a single crystalline semiconductor layer. An amorphous semiconductor material layer is deposited on the physically exposed surfaces of the single crystalline semiconductor layer and surfaces of the mandrel structure. Optionally, the amorphous semiconductor material layer can be implanted with at least one different semiconductor material. Solid phase epitaxy is performed on the amorphous semiconductor material layer employing the single crystalline semiconductor layer as a seed layer, thereby forming an epitaxial semiconductor material layer with uniform thickness. Remaining portions of the epitaxial semiconductor material layer are single crystalline semiconductor fins and thickness of these fins are sublithographic. After removal of the dielectric mandrel structure, the single crystalline semiconductor fins can be employed to form a semiconductor device.
摘要:
A method of forming improved spacer isolation in deep trench including recessing a node dielectric, a first conductive layer, and a second conductive layer each deposited within a deep trench formed in a silicon-on-insulator (SOI) substrate, to a level below a buried oxide layer of the SOI substrate, and creating an opening having a bottom surface in the deep trench. Further including depositing a spacer along a sidewall of the deep trench and the bottom surface of the opening, and removing the spacer from the bottom surface of the opening. Performing at least one of an ion implantation and an ion bombardment in one direction at an angle into an upper portion of the spacer. Removing the upper portion of the spacer from the sidewall of the deep trench. Depositing a third conductive layer within the opening.
摘要:
Embodiments of the invention relate generally to semiconductor devices and, more particularly, to semiconductor devices having field effect transistors (FETs) with a low body resistance and, in some embodiments, a self-balanced body potential where multiple transistors share same body potential. In one embodiment, the invention includes a field effect transistor (FET) comprising a source within a substrate, a drain within the substrate, and an active gate atop the substrate and between the source and the drain, an inactive gate structure atop the substrate and adjacent the source or the drain, a body adjacent the inactive gate, and a discharge path within the substrate for releasing a charge from the FET, the discharge path lying between the active gate of the FET and the body, wherein the discharge path is substantially perpendicular to a width of the active gate.
摘要:
After formation of a gate stack, regions in which a source and a drain are to be formed are recessed through the top semiconductor layer and into an upper portion of a buried single crystalline rare earth oxide layer of a semiconductor-on-insulator (SOI) substrate so that a source trench and drain trench are formed. An embedded single crystalline semiconductor portion epitaxially aligned to the buried single crystalline rare earth oxide layer is formed in each of the source trench and the drain trench to form a recessed source and a recessed drain, respectively. Protrusion of the recessed source and recessed drain above the bottom surface of a gate dielectric can be minimized to reduce parasitic capacitive coupling with a gate electrode, while providing low source resistance and drain resistance through the increased thickness of the recessed source and recessed drain relative to the thickness of the top semiconductor layer.
摘要:
A semiconductor structure and a method of forming the same are provided in which the gate induced drain leakage is controlled by introducing a workfunction tuning species within selected portions of a pFET such that the gate/SD (source/drain) overlap area of the pFET is tailored towards flatband, yet not affecting the workfunction at the device channel region. The structure includes a semiconductor substrate having at least one patterned gate stack located within a pFET device region of the semiconductor substrate. The structure further includes extension regions located within the semiconductor substrate at a footprint of the at least one patterned gate stack. A channel region is also present and is located within the semiconductor substrate beneath the at least one patterned gate stack. The structure further includes a localized workfunction tuning area located within a portion of at least one of the extension regions that is positioned adjacent the channel region as well as within at least a sidewall portion of the at least one gate stack. The localized workfunction tuning area can be formed by ion implantation or annealing.
摘要:
A structure and method for forming isolation and a buried plate for a trench capacitor is disclosed. Embodiments of the structure comprise an epitaxial layer serving as the buried plate, and a bounded deep trench isolation area serving to isolate one or more deep trench structures. Embodiments of the method comprise angular implanting of the deep trench isolation area to form a P region at the base of the deep trench isolation area that serves as an anti-punch through implant.
摘要:
Deep trench capacitor structures and methods of manufacture are disclosed. The method includes forming a deep trench structure in a wafer comprising a substrate, buried oxide layer (BOX) and silicon (SOI) film. The method further includes forming a plate on a sidewall of the deep trench structure in the substrate by an implant process. The implant processes contaminate exposed edges of the SOI film in the deep trench structure. The method further includes removing the contaminated exposed edges of the SOI film by an etching process to form a void in the SOI film. The method further includes growing epitaxial Si in the void, prior to completing a capacitor structure.
摘要:
A memory device is provided including a semiconductor on insulator (SOI) substrate including a first semiconductor layer atop a buried dielectric layer, wherein the buried dielectric layer is overlying a second semiconductor layer. A capacitor is present in a trench, wherein the trench extends from an upper surface of the first semiconductor layer through the buried dielectric layer and extends into the second semiconductor layer. A protective oxide is present in a void that lies adjacent the first semiconductor layer, and a pass transistor is present atop the semiconductor on insulator substrate in electrical communication with the capacitor.