Abstract:
The present disclosure describes a method for forming a barrier structure between liner-free conductive structures and underlying conductive structures. The method includes forming openings in a dielectric layer disposed on a contact layer, where the openings expose conductive structures in the contact layer. A first metal layer is deposited in the openings and is grown thicker on top surfaces of the conductive structures and thinner on sidewall surfaces of the openings. The method further includes exposing the first metal layer to ammonia to form a bilayer with the first metal layer and a nitride of the first metal layer, and subsequently exposing the nitride to an oxygen plasma to convert a portion of the nitride of the first metal layer to an oxide layer. The method also includes removing the oxide layer and forming a semiconductor-containing layer on the nitride of the first metal layer.
Abstract:
A semiconductor device includes a first gate structure that includes a first interfacial layer, a first gate dielectric layer disposed over the first interfacial layer, and a first gate electrode disposed over the first gate dielectric layer. The semiconductor device also includes a second gate structure that includes a second interfacial layer, a second gate dielectric layer disposed over the second interfacial layer, and a second gate electrode disposed over the second gate dielectric layer. The first interfacial layer contains a different amount of a dipole material than the second interfacial layer.
Abstract:
The present disclosure provides a multifunction chamber having a multifunctional shutter disk. The shutter disk includes a lamp device, a DC/RF power device, and a gas line on one surface of the shutter disk. With this configuration, simplifying the chamber type is possible as the various specific, dedicated chambers such as a degas chamber, a pre-clean chamber, a CVD/PVD chamber are not required. By using the multifunctional shutter disk, the degassing function and the pre-cleaning function are provided within a single chamber. Accordingly, a separate degas chamber and a pre-clean chamber are no longer required and the overall transfer time between chambers is reduced or eliminated.
Abstract:
The present disclosure provides an integrated circuit (IC) structure. The IC structure includes a semiconductor substrate; an interconnection structure formed on the semiconductor substrate; and a redistribution layer (RDL) metallic feature formed on the interconnection structure. The RDL metallic feature further includes a barrier layer disposed on the interconnection structure; a diffusion layer disposed on the barrier layer, wherein the diffusion layer includes metal and oxygen; and a metallic layer disposed on the diffusion layer.
Abstract:
Methods for tuning threshold voltages of fin-like field effect transistor devices are disclosed herein. An exemplary method includes forming a first opening in a first gate structure and a second opening in a second gate structure. The first gate structure is disposed over a first fin structure, and the second gate structure is disposed over a second fin structure. The method further includes filling the first opening and the second opening by forming a gate dielectric layer, forming a threshold voltage tuning layer over the gate dielectric layer, etching back the threshold voltage tuning layer in the second opening, forming a work function layer over the threshold voltage tuning layer, and forming a metal fill layer over the work function layer. The threshold voltage tuning layer includes tantalum and nitrogen. The etching back uses a tungsten-chloride containing precursor.
Abstract:
A polysilicon layer is formed over a substrate. The polysilicon layer is etched to form a dummy gate electrode having a top portion with a first lateral dimension and a bottom portion with a second lateral dimension. The first lateral dimension is greater than, or equal to, the second lateral dimension. The dummy gate electrode is replaced with a metal gate electrode.
Abstract:
A method for fabricating a semiconductor structure is provided, including: providing a solid precursor having a first average particle size; solving the solid precursor in an organic solvent into an intermediate; recrystallizing the intermediate to form solid granules, wherein the solid granules has a second average particle size larger than the first average particle size; vaporizing the solid granules to form a film-forming gas; and depositing the film-forming gas on a substrate to form a resistance film. A method for modifying a resistance film source in a semiconductor fabrication and a solid precursor delivery system are also provided. The method for fabricating a semiconductor structure in the present disclosure can remove small particles or ultra-small particles from solid precursor, and does not need extra time to dump cracked solid precursor.
Abstract:
A apparatus includes a susceptor and a non-reactive gas source. The susceptor has through holes and a wafer support surface. Each through hole includes a lift pin and a lift pin head. The lift pin has a vertical degree of motion in the through hole to lift up or place a wafer on the susceptor. The lift pin head has at least one flow channel structure running from its first surface at least partially exposed to a bottom side of the susceptor through its second surface exposed to a top side of the susceptor wherein the lift pin. The non-reactive gas source is configured to flow a gas to a backside of the wafer through the flow channel structure through the bottom side of the susceptor.
Abstract:
A deposition system is provided capable of measuring at least one of the film characteristics (e.g., thickness, resistance, and composition) in the deposition system. The deposition system in accordance with the present disclosure includes a substrate process chamber. The deposition system in accordance with the present disclosure includes a substrate pedestal in the substrate process chamber, the substrate pedestal configured to support a substrate, and a target enclosing the substrate process chamber. A shutter disk including an in-situ measuring device is provided.
Abstract:
A deposition system is provided capable of extending the chamber running time by preventing the target and other components from deformation due to thermal stress from the sputtering process by maintaining the temperature within the predetermined temperature range. The deposition system includes a substrate process chamber, a target within the substrate process chamber, and a plurality of grooves formed on the target in a circular formation. The plurality of grooves includes a first groove on a center portion of the target and a second groove on a periphery portion of the target.