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Transparent conductors on polymer films

: Fahland, M.; Vogt, T.; Schoenberger, A.; Mosch, S.


Vincenzini, P.:
5th Forum on New Materials 2010. Proceedings. Pt.D: New Materials III : Part of CIMTEC 2010 - 12th International Ceramics Congress and 5th Forum on New Materials Montecatini Terme, Italy, June 13 - 18, 2010
Faenza: Techna, 2011 (Advances in science and technology 75)
ISBN: 978-3-908158-58-5
ISSN: 1662-0356
Forum on New Materials <5, 2010, Montecatini Terme>
International Ceramics Congress (CIMTEC) <12, 2010, Montecatini Terme>
Conference Paper
Fraunhofer FEP ()

The paper will present a review of different solutions for transparent conducting electrodes on flexible substrates. The analysis of the present situation reveals a gap for low sheet resistance electrodes. Two new approaches to the problem will be presented. The first one is a novel technology for the deposition of zinc oxide on polyethylene terephtalate film. The intention for this process is the establishment of a low cost coating in a roll-to-roll machine. Silicon was used as the dopant material with a concentration varying in different samples between 1 and 4 %. The optimum parameters provided a transparent layer with a sheet resistance of 16 ?squ. Metal grids are a second promising approach for achieving low sheet resistance electrodes. The combination of these grids with transparent conducting oxides (TCO) will be presented. The TCO were deposited under vacuum in a roll-to-roll coating machine. The grids were applied by aerosol jet printing and subsequent tempering of the film.