Design of Electroactive Polymers with High Mechanical Properties for Intrinsically-Stretchable Polymer Solar Cells
Bumjoon Kim a
a Korea Advanced Institute of Science and Technology (KAIST), 291, Daehak-ro, Yuseong-gu, Daejeon, Republic of Korea, Korea, Republic of
Proceedings of Asia-Pacific Conference on Perovskite, Organic Photovoltaics&Optoelectronics (IPEROP25)
Kyoto, Japan, 2025 January 19th - 21st
Organizers: Atsushi Wakamiya and Hideo Ohkita
Invited Speaker, Bumjoon Kim, presentation 045
Publication date: 4th October 2024

Considering the technical standards required for wearable electronics, such as mechanical robustness, the development of intrinsically-stretchable OSCs (IS-OSCs) should be accelerated. Concurrently, IS-OSCs offer an intriguing platform for testing the mechanical and electrical properties of new polymeric materials. This presentation will discuss key studies aimed at making each layer of IS-OSCs both stretchable and efficient, with an emphasis on strategies to simultaneously enhance the photovoltaic and mechanical properties of the active layer. I will outline material design strategies to enhance the mechanical robustness of the PSCs as well as their power conversion efficiencies (PCEs). These strategies include; i) incorporating a high-molecular weight polymer acceptor as a tie molecule into active layers, ii) developing new electroactive polymers consisting of hard and soft segments and iii) developing new materials that improve molecular miscibility in the donor-acceptor blends. With these contributions, the IS-OSCs achieving over 14% PCE and high stretchability have been developed.

References

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