Abstract:
Structures and formation methods of a semiconductor device structure are provided. The semiconductor device structure includes a semiconductor substrate and a gate stack over the semiconductor substrate. The gate stack includes a gate dielectric layer and a work function layer. The gate dielectric layer is between the semiconductor substrate and the work function layer. The semiconductor device structure also includes a halogen source layer. The gate dielectric layer is between the semiconductor substrate and the halogen source layer.
Abstract:
A semiconductor device includes a substrate, an isolation structure, and a gate structure. The substrate has an active area. The isolation structure surrounds the active area of the substrate. The gate structure is across the active area of the substrate. The isolation structure has a first portion under the gate structure and a second portion adjacent to the gate structure. A top surface of the first portion of the isolation structure is lower than a top surface of the second portion of the isolation structure.
Abstract:
A method for forming a semiconductor device structure is provided. The method includes forming a metal gate electrode structure and an insulating layer over the semiconductor substrate. The insulating layer surrounds the metal gate electrode structure. The method includes nitrifying a first top portion of the metal gate electrode structure to form a metal nitride layer over the metal gate electrode structure.
Abstract:
A semiconductor device with an increased effective gate length or an increased effective channel width, and a method of forming the same are provided. The effective gate length or the effective channel width of the device is increased by lowering a top surface of an oxide isolation structure below the gate of the semiconductor device.
Abstract:
A method for forming a semiconductor device structure is provided. The method includes forming a first dielectric layer and a first conductive structure over a substrate. The first dielectric layer surrounds the first conductive structure. The method includes forming a second dielectric layer over the first dielectric layer. The second dielectric layer has an opening exposing the first conductive structure. The method includes forming a seal layer over the first conductive structure and an inner wall of the opening. The seal layer is in direct contact with the first dielectric layer and the second dielectric layer, and the seal layer includes a dielectric material comprising an oxygen compound. The method includes removing the seal layer over the first conductive structure. The method includes filling a second conductive structure into the opening.
Abstract:
Embodiments of mechanisms for forming a semiconductor device are provided. The semiconductor device includes a semiconductor substrate and a metal gate stack formed over the semiconductor substrate. The semiconductor device also includes an insulating layer formed over the semiconductor substrate and surrounding the metal gate stack, wherein the metal gate stack includes a metal gate electrode. The semiconductor device further includes a metal oxide structure formed over the insulating layer and in direct contact with the insulating layer. The metal oxide structure includes an oxidized material of the metal gate electrode.
Abstract:
A method for manufacturing a semiconductor device includes forming two isolation structures in a substrate to define a fin structure between the two isolation structures in the substrate. A dummy gate and spacers are formed bridging the two isolation structures and over the fin structure. The two isolation structures are etched with the dummy gate and the spacers as a mask to form a plurality of slopes under the spacers in the two isolation structures. A gate etch stop layer is formed overlying the plurality of slopes. The dummy gate and the two isolation structures beneath the dummy gate are removed to create a cavity confined by the spacers and the gate etch stop layer. A gate is then formed in the cavity.
Abstract:
Structures and formation methods of a semiconductor device structure are provided. The semiconductor device structure includes a semiconductor substrate and a gate stack over the semiconductor substrate. The gate stack includes a gate dielectric layer and a work function layer. The gate dielectric layer is between the semiconductor substrate and the work function layer. The semiconductor device structure also includes a halogen source layer. The gate dielectric layer is between the semiconductor substrate and the halogen source layer.
Abstract:
A method for manufacturing a memory device is provided. The method includes etching an opening in a first dielectric layer; forming a bottom electrode, a resistance switching element, and a top electrode in the opening in the first dielectric layer; forming a second dielectric layer over the bottom electrode, the resistance switching element, and the top electrode; and forming an electrode via connected to a top surface of the top electrode in the second dielectric layer.
Abstract:
A device includes an isolation structure, a source/drain epi-layer, a contact, a first dielectric layer, and a second dielectric layer. The isolation structure is embedded in a substrate. The source/drain epi-layer is embedded in the substrate and is in contact with the isolation structure. The contact is over the source/drain epi-layer. The first dielectric layer wraps the contact. The second dielectric layer is between the contact and the first dielectric layer. The first and second dielectric layers include different materials, and a portion of the source/drain epi-layer is directly between a bottom portion of the second dielectric layer and a top portion of the isolation structure.