The work of this thesis is related to the characterization of organic solar cells and is structured in three independant parts :- Within the IMPCELPHOTOR project, we developed an experimental bench based on LBIC/ LBIV mapping, in order to visualize and identify defects within OPV device and modules.- Within the European SPrinTronics project, we worked on the improvement of OPV electrodes. For the top electrode, we selected, tested, and validated metallic inks based on silver nanoparticles compatible with inkjet printing. For the bottom electrode, we tested silver nanowires and carbon nanotubes inks to replace ITO. Satisfactory results have been obtained with an ink based on silver nanowires, which allowed us to obtain functional semi-transparent cells on glass and plastic.- Within the PHASME project, we worked on the visual aspect of a coloured OPV device. We implemented various strategies to change the color of an OPV device without altering its photovoltaic performance, the aim being to achieve full color modules. Simultaneously, we developed a colorimetric software to control and predict the color rendering on the final device (OPV plus filter).
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