Mechanically robust, ITO-free, 4.8% efficient, all-solution processed organic solar cells on flexible PET foil

作者：Nickel Felix^*; Haas Thomas; Wegner Eduard; Bahro Daniel; Salehin Sayedus; Kraft Oliver; Gruber Patric A; Colsmann Alexander

来源：Solar Energy Materials and Solar Cells, 2014, 130: 317-321.

DOI：10.1016/j.solmat.2014.07.005

• Polymer solar cell
• ITO-free
• All-solution processing
• Mechanical flexible
• Printed electronics

We present all-solution processed, indium tin oxide-free organic solar cells on mechanically flexible polyethylene terephthalate (PET) substrates with power conversion efficiencies up to 4.8%. The mechanical properties of the devices are dictated by the electrodes from either metal-organic silver inks or a combination of poly(3,4-ethylenedioxythiophene):poly(4-styrenesulfonate) and silver nanowires. Both electrodes can sustain high tensile strains. The influence of mechanical strain on the solar cell performance was experimentally studied in situ by measuring the J-V curves of elongated samples under illumination. At a strain of 14%, we still observed 90% of the initial device power output. At higher strain, crack formation within the electrodes was identified as the origin for device failure.

• 出版日期2014-11