Achieving large-area organic photovoltaic (OPV) modules
with reasonable
cost and performance is an important step toward commercialization.
In this work, solution-processed conventional and inverted OPV modules
with an area of 216 cm2 were fabricated by the blade coating
method. Film uniformity was controlled by adjusting the fabrication
parameters of the blade coating procedure. The influence of the concentration
of the solutions of the interfacial materials on OPV module performance
was investigated. For OPV modules based on the PM6:Y6 photoactive
layer, a certificated power conversion efficiency (PCE) of 9.10% was
achieved for the conventional OPV modules based on the TASiW-12 interfacial
layer while a certificated PCE of 11.27% was achieved for the inverted
OPV modules based on the polyethylenimine (PEI) interfacial layer.
As for OPV modules based on a commercially available photoactive layer,
PV-X Plus, a PCE of 8.52% was achieved in the inverted OPV modules.
A halogen-free solvent, o-xylene, was used as the
solvent for PV-X Plus, which makes the industrial production much
more environmentally friendly.
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