Patent ID: 9096933
Filing Date: 2015-08-04
Classification: C23C,H01J,H01L

Abstract:
1. A method for plasma-based deposition of thin films on a substrate, said method comprising: providing a chamber, connecting it to a vacuum pump and maintaining a gas pressure in a range of 50 Pascals to 2000 Pascals in said chamber; positioning a plurality of electrodes within said chamber whose lengths are greater than their width or height, so that a first gap is formed between at least two said electrodes; and positioning a support for substrates so that said electrodes have a front side facing said support, the lengths extending parallel to a plane defined by said support; placing a substrate on said support such that a side of said substrate to be coated faces said electrodes, and such that the minimum gap between a said electrode and said supported substrate on said support is less than the electrode width and less than four times the minimum size of said first gap; maintaining said substrate at a temperature less than 200° C.; injecting a first gas into said first gap between opposing faces of said electrodes to flow towards said substrate; providing AC power to at least one of said electrodes to form a plasma by activating said first gas in the space between said electrodes and forming a plasma between said electrode and substrate providing ion bombardment of said substrate; injecting a second gas from within at least one of said electrodes into said flowing activated first gas to form a mixed gas; and wherein said mixed gas flows adjacent said front side of said electrode without recirculation to deposit said thin film on said substrate and then flows to an exhaust.