Abstract:
Methods for maintaining clean etch rate and reducing particulate contamination with PECVD of amorphous silicon films are provided. The method comprises cleaning a processing chamber with a plasma comprising a cleaning gas, exposing at least a portion of the interior surfaces and components of the processing chamber to an oxidation gas and a nitration gas in the presence of a plasma and depositing a bi-layer seasoning layer on the interior surfaces and components of the processing chamber.
Abstract:
Embodiments generally relate to methods of controlling hydrogen content in a silicon oxide/amorphous silicon stack. By precleaning the substrate of residues, controlling the delivery of hydrogen during the stack deposition and preventing outgassing of hydrogen from deposited layers during subsequent layer deposition and processing, the effects of delamination can be avoided in the formation of devices, such as 3D NAND devices.
Abstract:
Embodiments of the disclosure provide methods and system for manufacturing film layers with minimum lithographic overlay errors on a semiconductor substrate. In one embodiment, a method for forming a film layer on a substrate includes supplying a deposition gas mixture including a silicon containing gas and a reacting gas onto a substrate disposed on a substrate support in a processing chamber, forming a plasma in the presence of the depositing gas mixture in the processing chamber, applying current to a plasma profile modulator disposed in the processing chamber while supplying the depositing gas mixture into the processing chamber, and rotating the substrate while depositing a film layer on the substrate.