Abstract:
The present disclosure describes a method of forming a dielectric layer or a dielectric stack on a photoresist layer while minimizing or avoiding damage to the photoresist. In addition, the dielectric layer or dielectric stack can till high-aspect ratio openings and can be removed with etching. The dielectric layer or dielectric stack can be deposited with a conformal, low-temperature chemical vapor deposition process or a conformal, low-temperature atomic layer deposition process that utilizes a number of precursors and plasmas or reactant gases.
Abstract:
A transistor device includes a gate structure disposed over a channel region of a semiconductor substrate. A source/drain recess is arranged in the semiconductor substrate alongside the gate structure. A doped silicon-germanium (SiGe) region is disposed within the source/drain recess and has a doping type which is opposite to that of the channel. An un-doped SiGe region is also disposed within the source/drain recess. The un-doped SiGe region underlies the doped SiGe region and comprises different germanium concentrations at different locations within the source/drain recess.
Abstract:
The present disclosure provides a semiconductor fabrication apparatus in accordance with one embodiment. The apparatus includes a processing chamber; a wafer stage configured in the processing chamber, the wafer stage is operable to secure and rotate a plurality of wafers around an axis; a first chemical delivery mechanism configured in the processing chamber to provide a first chemical to a first reaction zone in the processing chamber; and a second chemical delivery mechanism configured in the processing chamber to provide a second chemical to a second reaction zone in the processing chamber. The second chemical delivery mechanism includes an edge chemical injector and a first radial chemical injector.
Abstract:
A transistor device includes a gate structure disposed over a channel region of a semiconductor substrate. A source/drain recess is arranged in the semiconductor substrate alongside the gate structure. A doped silicon-germanium (SiGe) region is disposed within the source/drain recess and has a doping type which is opposite to that of the channel. An un-doped SiGe region is also disposed within the source/drain recess. The un-doped SiGe region underlies the doped SiGe region and comprises different germanium concentrations at different locations within the source/drain recess.
Abstract:
Embodiments of the disclosure provide a method for forming a semiconductor device structure. The method includes forming a dielectric layer over a semiconductor substrate. The method also includes applying a carbon-containing material over the dielectric layer. The method further includes irradiating the dielectric layer and the carbon-containing material with a light to repair the dielectric layer, and the light has a wavelength greater than about 450 nm.
Abstract:
A transistor device includes a gate structure disposed over a channel region of a semiconductor substrate. A source/drain recess is arranged in the semiconductor substrate alongside the gate structure. A doped silicon-germanium (SiGe) region is disposed within the source/drain recess and has a doping type which is opposite to that of the channel. An un-doped SiGe region is also disposed within the source/drain recess. The un-doped SiGe region underlies the doped SiGe region and comprises different germanium concentrations at different locations within the source/drain recess.
Abstract:
The present disclosure relates to a method of forming pore sealing layer for porous low-k dielectric interconnects. The method is performed by removing hard mask layer before pore sealing and/or applying pore sealing layer before etching etch stop layer (ESL). These methods at least have advantages that aspect ratio is improved, line distortion introduced by the hard mask layer is avoided, and critical dimension is less affected by pore sealing layer.
Abstract:
A method includes forming a dummy gate stack on a semiconductor fin, forming gate spacers on sidewalls of the dummy gate stack, forming a first inter-layer dielectric, with the gate spacers and the dummy gate stack being in the first inter-layer dielectric, removing the dummy gate stack to form a trench between the gate spacers, forming a replacement gate stack in the trench, and depositing a dielectric capping layer. A bottom surface of the dielectric capping layer contacts a first top surface of the replacement gate stack and a second top surface of the first inter-layer dielectric. A second inter-layer dielectric is deposited over the dielectric capping layer. A source/drain contact plug is formed and extends into the second inter-layer dielectric, the dielectric capping layer, and the first inter-layer dielectric.
Abstract:
A method includes forming a gate stack, and etching the gate stack to form a trench penetrating through the gate stack. A dielectric isolation region underlying the gate stack is exposed to the trench, and a first portion and a second portion of the gate stack are separated by the trench. The method includes performing a first deposition process to form a first dielectric layer extending into the trench and lining sidewalls of the first portion and the second portion of the gate stack, and performing a second deposition process to form a second dielectric layer on the first dielectric layer. The second dielectric layer fills the trench. The first dielectric layer has a first dielectric constant, and the second dielectric layer has a second dielectric constant greater than the first dielectric constant.
Abstract:
A method includes forming a metal-containing hard mask layer over a dielectric layer, wherein the metal-containing hard mask layer has a Young's modulus greater than about 400 MPa and a tensile stress greater than about 600 MPa, patterning the metal-containing hard mask layer to form an opening in the metal-containing hard mask layer, and etching the dielectric layer using the metal-containing hard mask layer as an etching mask. The opening extends into the dielectric layer. The opening is filled with a conductive material to form a conductive feature. The metal-containing hard mask layer is then removed.