Thermoset Matrices for Thermally Stable Organic Solar Cells through Green Solvent Process
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Yuanfan wen Master thesis.pdf
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Master thesis
Embargo End Date:
2024-05-11
Type
ThesisAuthors
Wen, Yuanfan
Advisors
Baran, Derya
Committee members
Laquai, Frédéric
Heeney, Martin

Mohammed, Omar F.

Program
Material Science and EngineeringKAUST Department
Physical Science and Engineering (PSE) DivisionDate
2023-05Embargo End Date
2024-05-11Permanent link to this record
http://hdl.handle.net/10754/691653
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At the time of archiving, the student author of this thesis opted to temporarily restrict access to it. The full text of this thesis will become available to the public after the expiration of the embargo on 2024-05-11.Abstract
Organic solar cells (OSCs) have gained considerable attention from the scientific community in recent decades due to their remarkable power conversion efficiency (PCE), flexibility, and cost-effectiveness in producing large-area batteries. Despite the ongoing research efforts that have led to a PCE exceeding 19% for single-junction OSCs and surpassing 20% for multi-junction OSCs, the commercialization of these devices is hampered by their poor stability, reliance on specific additives, and the use of toxic solvents. To address these shortcomings, this study focuses on investigating the 3 * 3 thermosets matrix to facilitate the selection of precursors for in-situ crosslinking thermosets. Furthermore, in this study, we fabricated the devices using green solvents to narrow the gap between PCE and stability under environmentally friendly conditions. We utilized PTQ10: BTP-BO4Cl as the model system and employed tetrahydrofuran (THF) as an eco-friendly solvent. The research focused on examining the thermoset's glass transition temperature (Tg), modulus and morphology properties. The resulting cross-linked thermoset network has high-density hydrogen bonding and network grids, which helps to stabilize the morphology of the active layer. The findings indicated that selecting a thermoset with high Tg, high modulus (4-8 MPa), and good uniformity as an in-situ crosslinking additive would be beneficial. These results can guide the selection of universal in-situ crosslinking thermosets and aid in improving the stability of various organic electronic devices.Citation
Wen, Y. (2023). Thermoset Matrices for Thermally Stable Organic Solar Cells through Green Solvent Process [KAUST Research Repository]. https://doi.org/10.25781/KAUST-0U881ae974a485f413a2113503eed53cd6c53
10.25781/KAUST-0U881