Abstract
The target-substrate distance has a significant effect on the morphology and the relative deposition rate of fluorocarbon films deposited by RF magnetron sputtering. The films were deposited on regenerated cellulose substrate using a polytetrafluoroethylene (PTFE) target, with argon as the working gas. The surface and fracture cross-section morphologies of the deposited films were examined by scanning electron microscopy (SEM). The average thickness of the fluorocarbon films and the relative deposition rates were calculated for varying target-substrate distances. The films had island-like structures composed of nanoscale particles, and the surfaces were not flat. The density of the particles increased and their size decreased with increase of the target-substrate distance in the range 30 to 80 mm. The relative deposition rate increased at first and then decreased with increased target-substrate distance: the optimal target-substrate distance was 50-60 mm.
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