Abstract
In this study, we designed a packaging process for organic photovoltaics (OPVs) using an ultraviolet-curable polymer encapsulant for improved stability against oxidation. We investigated the chemical and physical properties of polyurethane acrylates (PUA) without reactive diluents, PUA with 2-hydroxyethyl methacrylate (PUA-HEMA), and PUA with 2,2,2-trifluoroethyl methacrylate (PUA-TFMA) through Fourier-transform infrared spectroscopy, X-ray diffraction analysis, and differential scanning calorimetry. Among the three types of resins, PUA-HEMA provided the most effective oxygen barrier and possessed improved mechanical properties. These desirable properties originated from strong intermolecular packing induced by hydrogen bonding between hydroxyl groups in HEMA segments. Because of its advantages, PUA-HEMA was adopted as the encapsulant in the packaging process for OPVs. We confirmed the anti-oxidation behaviour and the resulting OPV performance through various analyses. The PUA-HEMA encapsulant allowed long-term OPV operation by preventing the corrosion of aluminum electrodes in ambient air.
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
