Inkjet-printed polymer–fullerene blends for organic electronic applications

Organic field effect transistors, photodiodes and solar cells based on polymer–fullerene blend active layers are printed electronic applications under intense studies. We show that the viscosity of the inkjet formulation, substrate temperature, drop spacing and the height of the droplet in relation to the surface are critical parameters to achieving high quality inkjet-printed polymer–fullerene based active layers. The effect of the above processing parameters on the performance of polymer–fullerene based organic solar cells is presented.

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► The technological attraction of organic electronics is their suitability for printing processes.
► In this paper we present details on the inkjet printing processing conditions of polymer-fullerene blends.
► Viscosity, temperature, drop spacing and droplet height are critical factors for printing polymer-fullerene blends.
► Efficient inkjet-printed OPVs can be achieved by optimizing the above process parameters.