Park Jin Su, Kim Geon-U, Lee Seungjin, Lee Jin-Woo, Li Sheng, Lee Jung-Yong, Kim Bumjoon J
Department of Chemical and Biomolecular Engineering, Korea Advanced Institute of Science and Technology (KAIST), Daejeon, 34141, Republic of Korea.
School of Electrical Engineering, Korea Advanced Institute of Science and Technology (KAIST), Daejeon, 34141, Republic of Korea.
Adv Mater. 2022 Aug;34(31):e2201623. doi: 10.1002/adma.202201623. Epub 2022 Jun 28.
Recent advances in the power conversion efficiency (PCE) of organic solar cells (OSCs) have greatly enhanced their commercial viability. Considering the technical standards (e.g., mechanical robustness) required for wearable electronics, which are promising application platforms for OSCs, the development of fully stretchable OSCs (f-SOSCs) should be accelerated. Here, a comprehensive overview of f-SOSCs, which are aimed to reliably operate under various forms of mechanical stress, including bending and multidirectional stretching, is provided. First, the mechanical requirements of f-SOSCs, in terms of tensile and cohesion/adhesion properties, are summarized along with the experimental methods to evaluate those properties. Second, essential studies to make each layer of f-SOSCs stretchable and efficient are discussed, emphasizing strategies to simultaneously enhance the photovoltaic and mechanical properties of the active layer, ranging from material design to fabrication control. Key improvements to the other components/layers (i.e., substrate, electrodes, and interlayers) are also covered. Lastly, considering that f-SOSC research is in its infancy, the current challenges and future prospects are explored.
有机太阳能电池（OSC）的功率转换效率（PCE）最近取得的进展极大地提高了其商业可行性。考虑到可穿戴电子产品所需的技术标准（如机械坚固性），而可穿戴电子产品是OSC很有前景的应用平台，应加速全可拉伸有机太阳能电池（f-SOSC）的开发。在此，提供了对f-SOSC的全面概述，其旨在在包括弯曲和多向拉伸在内的各种形式的机械应力下可靠运行。首先，总结了f-SOSC在拉伸和内聚/粘附性能方面的机械要求，以及评估这些性能的实验方法。其次，讨论了使f-SOSC的每一层都具有可拉伸性和高效性的重要研究，强调了从材料设计到制造控制等同时提高活性层光伏和机械性能的策略。还涵盖了对其他组件/层（即基板、电极和中间层）的关键改进。最后，鉴于f-SOSC研究尚处于起步阶段，探讨了当前的挑战和未来的前景。
