Investigation of oxide thin films deposited by atomic layer deposition as dopant source for ultra-shallow doping of silicon
The application of ALD for fabrication of dopant source layers for Si is proposed. Antimony oxide deposition by ALD from triethylantimony and ozone was proven. Antimony diffusion into silicon from such layers failed. Boron containing layers obtained from tris-(dimethylamido)borane and ozone at 50C. Shallow doping of silicon from ALD grown boron containing layers was demonstrated.
ultra-shallow doping of silicon ald antimony oxide boron oxide