Abstract:
Image sensors comprising an isolation region according to embodiments are disclosed, as well as methods of forming the image sensors with isolation region. An embodiment is a structure comprising a semiconductor substrate, a photo element in the semiconductor substrate, and an isolation region in the semiconductor substrate. The isolation region is proximate the photo element and comprises a dielectric material and an epitaxial region. The epitaxial region is disposed between the semiconductor substrate and the dielectric material.
Abstract:
A device includes a semiconductor substrate having a front side and a backside. A photo-sensitive device is disposed at a surface of the semiconductor substrate, wherein the photo-sensitive device is configured to receive a light signal from the backside of the semiconductor substrate, and convert the light signal to an electrical signal. An amorphous-like adhesion layer is disposed on the backside of the semiconductor substrate. The amorphous-like adhesion layer includes a compound of nitrogen and a metal. A metal shielding layer is disposed on the backside of the semiconductor substrate and contacting the amorphous-like adhesion layer.
Abstract:
A device includes a semiconductor substrate, which has a front side and a backside. A photo-sensitive device is disposed on the front side of the semiconductor substrate. A first and a second grid line are parallel to each other, and are disposed on the backside of, and overlying, the semiconductor substrate. A stacked layer includes an adhesion layer, a metal layer over the adhesion layer, and a high-refractive index layer over the metal layer. The adhesion layer, the metal layer, and the high-refractive index layer are substantially conformal, and extend on top surfaces and sidewalls of the first and the second grid lines.
Abstract:
A method of lithography patterning includes coating a resist layer on a substrate; performing an exposing process to the resist layer using a lithography tool with a numerical aperture tuned between about 0.5 and about 0.6; baking the resist layer; thereafter performing a first developing process to the resist layer for a first period of time; and performing a second developing process to the resist layer for a second period of time.
Abstract:
A semiconductor device structure, for improving the metal gate leakage within the semiconductor device. A structure for a metal gate electrode for a n-type Field Effect Transistor includes a capping layer; a first metal layer comprising Ti and Al over the capping layer; a metal oxide layer over the first metal layer; a barrier layer over the metal oxide layer; and a second metal layer over the barrier layer.
Abstract:
A method for spin-on wafer cleaning. The method comprises controlling spin speed and vertical water jet pressure. The vertical jet pressure and the spin speed are substantially maintained in inverse proportion. Wafer spin speed is between 50 to 1200 rpm. Vertical wafer jet pressure is between 0.05 to 100 KPa.
Abstract:
A shallow trench isolation (STI) structure for semiconductor devices is formed using a deposited silicon layer formed over a polish stop layer formed over an oxide formed on a substrate. The polish stop layer may be nitride. An opening is formed extending through the deposited silicon layer and the nitride and oxide layers and extending into the substrate. A deposited oxide is formed filling the opening and extending over the top surface of deposited silicon layer. A chemical mechanical polishing operation polishes the deposited silicon layer at a rate faster than the deposited oxide layer to produce an STI with a convex portion extending above the nitride layer. Dishing problems are avoided and the structure may be subsequently planarized.
Abstract:
A method of removing residual fluorine present in a HDP-CVD chamber which includes a high pressure seasoning process, a dry-cleaning process, and a low-pressure deposition process.
Abstract:
A method of removing residual contamination including metal nitride particles from semiconductor wafer surfaces including the steps of: providing at least one semiconductor wafer with metal nitride particles adhering to the at least one semiconductor wafer surface thereto; subjecting the at least one semiconductor wafer to at least one mechanical brushing process while a cleaning solution including a carboxylic acid is supplied to at least one semiconductor wafer surface; and, subjecting the at least one semiconductor wafer to an a sonic cleaning process including the carboxylic acid cleaning solution.
Abstract:
A method and means for detection of oxidizing contamination in acid etching baths employed to etch silicon oxide layers from silicon substrates employed in silicon integrated circuit microelectronics fabrications. There is provided a silicon substrate having within a doped region formed employing ion implantation. The silicon substrate is immersed within a buffered oxide etch (BOE) acid bath, wherein the presence of an oxidizing contaminant correlates with an increase in the resistance of the doped region upon the removal of any silicon oxide layer on the silicon surface.