Patent ID: 8088938

Claim:
A method for storing a precursor which decreases the precursor decomposition rate, said method comprising: a) providing a vessel comprising an outer surface made of stainless steel and an inner surface made of a second material, wherein the vessel defines an internal volume and wherein the outer surface material is not the same as the inner surface material; b) introducing a precursor into the vessel; wherein: i) the precursor is of the general formula: Ta(NR 1 R 2 ) x wherein R 1 and R 2 are independently selected from C1-C4 alkyl groups; and x is 4 or 5; and ii) at least part of the precursor is in direct physical contact with at least part of the inner surface; c) heating the vessel to a temperature between about 60° C. and about 150° C.; and d) withdrawing at least part of the precursor from the vessel.