Patent ID: 9476144
Filing Date: 2016-10-25
CPC Classification: C23C,C30B,H01L

Claim Text:
1. A method of processing a substrate, comprising: positioning the substrate in a processing chamber; flowing a germanium precursor into the processing chamber; forming a metal halide stressor precursor in a contact chamber coupled to the processing chamber, wherein the metal halide stressor precursor comprises chlorine or fluorine, and wherein the forming the metal halide stressor precursor comprises subliming a solid source of metal halide crystals into a flowing carrier gas stream comprising N flowing the metal halide stressor precursor into the processing chamber; and growing a germanium stressor layer epitaxially on the substrate, wherein the germanium stressor layer comprises metal atoms disposed in a germanium matrix with a resulting metal atom concentration in the germanium stressor layer of between about 1% and about 12%, wherein the metal atoms are from the metal halide stressor precursor.