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. 2020 Nov 30;12(12):2867. doi: 10.3390/polym12122867

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© 2020 by the authors.

Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (http://creativecommons.org/licenses/by/4.0/).

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Left: Fast inline roll-to-roll printing and coating on PET for the manufacture of indium-tin-oxide-free (ITO-free) polymer solar cells comprising a six-layer stack: silver-grid/PEDOT:PSS/ZnO/P3HT:PCBM/PEDOT:PSS/silver-grid. The illustrated processes are flexo-printing (F), rotary-screen printing (RSP), slot-die coating (SD), and drying (D). Right: (a) Hundreds of meters of flextrode substrate (PET) ready for further R2R processing. (b) Flextrode substrate with 16 individual electrode stripes [44].