We have studied the optimum deposition conditions for the improvement of oxygen and carbon dioxide gas barrier performance of functional diamond-like carbon (DLC) thin films. The a-C:H: a-C:H:Si, a-C:H:N and ta-C:N thin films with 10-400 nm thickness were deposited on polyethylene terephthalate (PET) substrates by the radio frequency plasma-enhanced chemical vapour deposition method. To study the microstructure of the PET coated films, we have used the Raman spectroscopy, X-ray photoelectron spectroscopy, nano-indentation and surface profilometry. The gas barrier property were analysed and found that the a-C:H:N’s are 5-10 times better gas barrier properties than that of uncoated PET substrates. These thin layer PET coated thin films could be use in food packaging and biomedical applications.
- DLC coatings
- Gas barrier performance
Ray, SC., Mukherjee, D., Sweety, S., Bhattacharya, G., Mathur, A., Roy, SS., & McLaughlin, J. (2017). Functional diamond like carbon (DLC) coatings on polymer for improved gas barrier performance. Diamond and Related Materials, 80, 59-63. https://doi.org/10.1016/j.diamond.2017.09.001