Journal
PLASMAS AND POLYMERS
Volume 7, Issue 3, Pages 291-310Publisher
SPRINGER/PLENUM PUBLISHERS
DOI: 10.1023/A:1019942625607
Keywords
PECVD; silicon dioxide; spectroscopic diagnostics; process control; gas barrier
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Optical emission and Fourier transform infrared absorption diagnostics have been carried out in hexamethyldisiloxane/oxygen RF discharges for studying the effects of the feed composition and the power on the deposition of SiO2-like thin films. Ex situ FTIR absorption has been utilized to monitor organic moieties and silanol groups in the film. It is shown that carbon-free films can be obtained by highly diluting the monomer in oxygen, while medium-to-high power is necessary to abate silanol groups. These two conditions represent the optimization criterion to obtain excellent barrier films for food packaging applications.
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