A new OMCVD iridium precursor for thin film deposition

A new one step synthesis of a volatile iridium OMCVD precursor with 60 % yield is described. Using the precursor [Ir(-SC(CH3)3)(CO)2]2 (see Figure), it is possible to obtain iridium of high purity. TGA/DTA analyses indicate that the precursor melts at 128 °C and starts to decompose at 160 °C. SEM analysis reveals that films deposited above 300 °C have a lamellar morphology while nodular morphology was obtained below 250 °C