Patent ID: 7989323

Claim:
A method of depositing a III-V compound semiconductor film on a substrate comprising the steps of: a) providing a substrate in a deposition chamber; b) conveying a Group IIIA metal compound in a gaseous phase to the deposition chamber; c) conveying a Group VA compound in a gaseous phase to the deposition chamber; d) conveying a germanium dopant compound of the formula R x GeH y in a gaseous phase to the deposition chamber; e) decomposing the Group IIIA metal compound, the Group VA compound and the germanium dopant compound in the deposition chamber; and f) depositing a germanium doped III-V compound semiconductor film on the substrate; wherein each R is independently chosen from (C 3 -C 7 )branched alkyl, (C 3 -C 7 )cyclic alkyl, (C 5 -C 20 )cyclopentadienyl and NR 1 R 2 ; R 1 and R 2 are independently chosen from H and (C 1 -C 6 )alkyl; x is an integer from 1-4; y is an integer from 0-3; and x+y=4.