<p>This study focuses on tuning the metal content in a polymer/metal composite produced by a low-pressure cold plasma process using an organometallic precursor. Firstly, the evolution of the metal content is studied according to the experimental parameters. Monomer fragmentation and the balance between ablation and polymerization influence the metal content in the composite. In addition, physical sputtering through argon plasma treatment of the composite can be used to significantly increase its metal content. Finally, the ageing of the composite is studied. Both the inorganic and organic parts of the material are affected by oxidation. A comparison of the composite ageing with a purely organic polymer highlights the effect of copper on oxidation.</p>