Fully roll-to-roll printable organic photovoltaic energy cells (OPV’s) have been produced by the Technical University of Denmark, Department of Energy Conservation and Storage (DTU) using printed PEDOT:PSS rather than traditional vacuum processed indium tin oxide (ITO).
DTU was able to show that there use of PEDOT:PSS as an electrode in the layer stack contributes to the thin, lightweight and flexible properties of the OPV device.
Dr. Wilfied Lövenich, of Heraeus, said, “Flexible Clevios PEDOT:PSS allows additional options, including low cost printing, in the production of OPV devices."
Prof Krebs of DTU said, "The ability to provide flexible roll-to-roll printed energy devices so simply is a major step towards the generation of mass produced organic photovoltaic cells."
Heraeus Clevios™ PEDOT:PSS is a highly conductive polymer dispersion that allows the deposition of transparent, thin conductive films with sheet resistances of less than 100 Ohm/sq.
The work was partially supported by a European project ROTROT,(ROll-To-Roll production of Organic Tandem cells, FP7 ICT 2011).
