Patent ID: 8580664

Claim:
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 3 , and wherein in (ii) the reactant gas includes a) H 2 O, O 2 , or O 3 , and NH 3 , or b) NO, NO 2 , or N 2 O, and optionally one or more of H 2 O, O 2 , O 3 , and NH 3 ; 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.