Suppressed oxidation in organic photovoltaics via hydrogen-bonded polyurethane acrylate resin encapsulation
- Authors
- Kim, Min Soo; Jang, Woongsik; Mun, Sung Cik; Kim, Byung Gi; Wang, Dong Hwan
- Issue Date
- Apr-2022
- Publisher
- Elsevier B.V.
- Keywords
- 2-Hydroxyethyl methacrylate; Encapsulation; Hydrogen bond; Organic photovoltaics; Oxygen barrier; Urethane acrylate
- Citation
- Journal of Power Sources, v.528
- Journal Title
- Journal of Power Sources
- Volume
- 528
- URI
- https://scholarworks.bwise.kr/cau/handle/2019.sw.cau/55391
- DOI
- 10.1016/j.jpowsour.2022.231206
- ISSN
- 0378-7753
1873-2755
- 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. © 2022 Elsevier B.V.
- Files in This Item
- There are no files associated with this item.
- Appears in
Collections - College of ICT Engineering > School of Integrative Engineering > 1. Journal Articles
![qrcode](https://api.qrserver.com/v1/create-qr-code/?size=55x55&data=https://scholarworks.bwise.kr/cau/handle/2019.sw.cau/55391)
Items in ScholarWorks are protected by copyright, with all rights reserved, unless otherwise indicated.