Patent ID: 7569913
Filing Date: 2009-08-04
Classification: H01L

Abstract:
1. A method to form an electronic device, the method comprising: flowing a boron precursor gas over a substrate in a chemical vapor deposition chamber, the boron precursor gas forming a boron layer thereby acting as an etch-stop layer, the etch-stop layer being formed below a first surface of the substrate, the etch-stop layer being less than 100 nanometers in thickness when measured as a full-width half-maximum (FWIHM) value; forming one or more spacers on a surface of the substrate to provide a self-aligning structure; doping the one or more spacers with carbon atoms; and injecting carbon atoms remotely from the one or more spacers by annealing the substrate thereby allowing the carbon atoms to diffuse into the etch-stop layer.