Patent ID: 8993451
Filing Date: 2015-03-31
Classification: B81C,H01L

Abstract:
1. A method for providing an electronic product containing one or more trenches, comprising: providing a substrate comprising a semiconductor material body having a principal surface; forming a dielectric layer over the principal surface of the semiconductor material body; producing at least one etch window in the dielectric layer; introducing etch stabilizing ions into a portion of the semiconductor material body of the substrate proximate the principal surface and through the etch window in the dielectric layer, the etch stabilizing ions consisting essentially of fluorine ions implanted to a fluorine ion concentration greater than 5E18 ions per cm forming the one or more trenches by etching away at least part of the semiconductor material body of the substrate containing the etch stabilizing ions through the etch window in the dielectric layer, the one or more trenches each comprising a cavity or micro-cavity extending into, but not through the semiconductor material body of the substrate, and having a width between about 500 and 1200 micrometers.