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Mike Simmons presents a technical paper on transparent ultra-barrier coatings based on work performed in the Intellivation Roll to Roll Thin Film Coating Development Laboratory. Visit the 2019 AIMCAL R2R Conference in Myrtle Beach, SC, to learn more about this exciting development in roll to roll PVD coating of transparent ultra-barrier films for leading edge applications including encapsulation of Organic Light Emitting Diode (OLED) displays and high efficiency solar cell encapsulation.

The technical paper on roll to roll production of transparent ultra-barriers via magnetron sputtering is entitled:
Coating Properties of Transparent Ultra-Barrier Films on PET Web via High Power Impulse Magnetron Sputtering (HIPIMS) with Positive Voltage Reversal

The full abstract is:
As industries such as wearable devices and flexible electronics develop, new technologies are required in order to deposit high quality barrier coatings on insulating and temperature sensitive substrates and organic layers. Roll to roll web coating is frequently used to deposit coatings on polymer webs. High Power Impulse Magnetron Sputtering (HIPIMS) has shown many advantages over conventional magnetron sputtering which is commonly used to deposit metals, metal nitrides and metal oxides on polymer webs. With HIPIMS, a fraction of the target material will be ionized while the ion energy distribution function will shift to energies about 10 times greater than those for DC discharges. However, this increase in ionization and energy will give only modest changes in coating properties on an unbiased substrate. With the addition of a positive voltage reversal pulse adjacent to the negative HIPIMS sputtering pulse, these ions can be accelerated towards the substrate providing energy for film nucleation and densification. In this study, an industrial scale (330 mm wide web) web coater was used to deposit barrier coatings on PET at room temperature, and the barrier performance of the HIPIMS films is compared to films deposited by convention means.

Authors: Mike Simmons, Frank Papa, Ivan Fernandez Martinez, Mark George, Rex Chang, Jason Bloking, Marty Rosenblum

Presenter: Mike Simmons