Patent ID: 7413776

Claim:
A method of depositing a metal-containing film on a substrate comprising the steps of: a) conveying one or more organometallic compounds of formula I in a gaseous phase to a deposition chamber containing a substrate, wherein M is Ge; R 1 and R 2 are independently chosen from H, alkyl, alkenyl, alkynyl and aryl; each R 3 is independently chosen from n-propyl, iso-propyl, n-butyl, iso-butyl, sec-butyl, tert-butyl, pentyl, cyclopentyl, hexyl, cyclohexyl, alkenyl, alkynyl and aryl, provided that none of R 3 is cyclopentadienyl; each R 4 is independently chosen from (C 3 -C 12 )alkyl; X is halogen; a=0-3; b=0-3; c=0-3; d=0-2; e=0-4; and a+b+c+d+e=4; wherein B 3 ≠R 4 ; wherein the sums of a+b and a+d are each ≦3; b) decomposing the one or more organometallic compounds in the deposition chamber; and c) depositing a metal-containing film comprising germanium on the substrate.