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Deposition of silicon oxycarbide thin films from an organosilicon source for polycarbonate glazing

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Publication date: 30 September 2017
Source:Thin Solid Films, Volume 638
Author(s): Sung-Eun Lee, Young-Chun Park
To enhance the abrasion resistance of polycarbonate used to replace glass, a silicon oxycarbide thin film was deposited at <100°C using a slot antenna electron cyclotron resonance plasma enhanced chemical vapor deposition system and an organosilicon source. The thin film deposition rate, which varied as a function of microwave power and whether Ar or O2 was used to form the plasma, was above 500nm/min even at 2Pa, and reached 1μm/min as the microwave power increased. The transmittance of visible light was over 90% after thin film deposition, indicating performance similar to that of glass. The Taber abrasion test showed that the Δhazes of the thin films were under 5%, which indicates better performance than the siloxane-based wet coating sample (Momentive, AS4700) and the commercial hard plasma coating product LEXAN MR-10. Furthermore, the thin film deposited at 1.7kW exhibited similar abrasion resistance to that of glass. In addition, adhesion improved significantly when consecutive, minute-long 1.7kW Ar and O2 plasma surface treatments were performed before the depositions.


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