Patent ID: 8993418
Filing Date: 2015-03-31
Classification: H01L

Abstract:
1. A method for manufacturing a doped mono-crystalline semiconductor layer on a substrate, the method comprising the following steps: A) providing a substrate having a face comprising a first zone of mono-crystalline semiconductor material and a second zone of insulating material; B) submitting the substrate to a doping atmosphere comprising gaseous dopant precursors and devoid of gaseous silicon or germanium precursors; C) submitting the substrate to a deposition atmosphere comprising gaseous silicon and/or germanium precursors under conditions causing depositing of a semiconductor layer with a mono-crystalline portion over the first zone and a portion having a different texture over the second zone; and D) submitting the substrate to an etching atmosphere comprising a gaseous chloride precursor for removing the semiconductor layer over the second zone and leaving the mono-crystalline portion over the first zone.