Patent ID: 8580664
Filing Date: 2013-11-12
Classification: H01L

Abstract:
1. A method for forming an ultra-shallow boron (B) dopant region in a substrate, the method comprising: depositing, by atomic layer deposition (ALD), a boron dopant layer in direct contact with the substrate, the boron dopant layer containing (i) a nitride, or (ii) an oxynitride, wherein (i) and (ii) are formed by alternating gaseous exposures of a boron amide precursor or an organoboron precursor and a reactant gas, wherein in (i) the reactant gas includes NH patterning the boron dopant layer; and forming the ultra-shallow boron dopant region in the substrate by diffusing boron from the patterned boron dopant layer into the substrate by a thermal treatment.