Patent ID: 8779383

Claim:
A dopant gas composition supply for ion implantation of silicon, said supply being selected from the group consisting of: (A) a gas storage and dispensing vessel containing a silicon dopant composition comprising silicon dopant gas in mixture with supplemental gas comprising at least one of a diluent gas and a co-species gas, wherein the silicon dopant composition comprises at least one gaseous silicon compound that is isotopically enriched above natural abundance in at least one of 28 Si, 29 Si, and 30 Si; and (B) a gas supply kit comprising (i) a first gas storage and dispensing vessel containing silicon dopant gas, and (ii) a second gas storage and dispensing vessel holding supplemental gas comprising at least one of a diluent gas and a co-species gas, wherein at least one of the silicon dopant gas and, when present, a co-species gas, is isotopically enriched above natural abundance in at least one of 28 Si, 29 Si, and 30 Si.