The embodiments of the disclosure may generally provide a method and apparatus for forming thin film transistor device that includes an indium gallium zinc oxide (IGZO) layer using a multi-component precursor gas. The embodiments of the disclosure may provide a plasma enhanced chemical vapor deposition system configured to form an IGZO layer on large area substrates. However, it should be understood that the disclosure has utility in other system configurations such other types of chemical vapor deposition systems and any other system in which distributing a multi-component precursor gas to and within a process chamber is desired.