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Consequences of Roll-Barrier Contact in Roll-to-Roll Processing of a Permeation Barrier
Published: 2015 Technical Conference Proceedings, Poster Session (September 22, 2015)
  • H. Klumbies, FHR Anlagenbau GmbH, Ottendorf-Okrilla DE
  • J. Fahlteich, Fraunhofer FEP, Dresden DE
  • S. Kreher, FHR Anlagenbau GmbH, Ottendorf-Okrilla DE
  • F. Nehm, Institut für Angewandte Photophysik, Dresden DE
  • L. Mueller-Meskamp, Institut für Angewandte Photophysik, Dresden DE
  • T. Winkler, FHR Anlagenbau GmbH, Ottendorf-Okrilla DE

Flexible permeation barriers are a key component for flexible organic light emitting diodes and organic solar cells. Roll-toroll processing is a solution to reduce the costs for barriers. However, usual web handling includes roll-layer contact. This physical contact may be critical for high quality barriers, because the barrier performance deteriorates drastically with the introduction of only a few defects. In this work, it is demonstrated that avoiding roll-barrier contact improves the barrier performance by at least a factor of 5. To minimize barrier defects caused by substrate surface irregularities, a high quality substrate was used for this study. Due to the high substrate quality, a water vapor transmission rate (WVTR) of 0.001 g/(m²d) was measured for a 37 nm thick single layer of sputtered zinc tin oxide (ZTO).

DOI:  dx.doi.org/10.14332/svc15.proc.1926

Document Info: Adobe Acrobat Format, 822 KB

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