Sustainable Development Goals
Abstract/Objectives
Large-area organic photovoltaic (OPV) modules are crucial for commercialization due to their cost and performance considerations. This study focused on fabricating 216 cm2 conventional and inverted OPV modules using the blade coating method to achieve film uniformity and control. The concentration of interfacial materials solutions was evaluated for its impact on module performance. OPV modules based on PM6:Y6 and PV-X Plus photoactive layers achieved certified power conversion efficiencies (PCE) of 9.10% and 11.27% using different interfacial layers. The use of a halogen-free solvent, o-xylene, improved environmental friendliness during the production process of the OPV modules. These findings are significant steps towards the widespread industrial application of large-area OPV modules. (Word count: 107)
Results/Contributions

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. © 2023 American Chemical Society.

Keywords
Organic photovoltaicsOPV modulesblade coating methodfilm uniformityinterface materialsactive layerconversion efficiencyeco-friendly
Contact Information
洪勝富
sfhorng@ee.nthu.edu.tw