Stretchable organic photovoltaics have recently garnered significant attention as promising power sources for wearable electronic systems. Especially, research on intrinsically stretchable organic photovoltaics (IS-OPVs) has been accelerated, as the unique advantage of IS-OPVs is their inherent deformability, which does not depend on fabrication processes or pre-treatment methods. Remarkably, the photoactive area increases during stretching, indicating a potential increase in power output and underscoring IS-OPV's strengths as a power source in self-powered electronic systems. Despite rapid advancements in power conversion efficiency and stretchability, IS-OPVs still encounter challenges in market adoption. The most critical performance factor for IS-OPVs is stability, which ensures stable operation under mechanical stress. This review analyses the structural factors that degrade the stability of IS-OPVs. Given their multilayer structure, mechanical failure can result from various complex causes, thus complicating the investigation and comprehensive understanding of the factors that promote performance degradation. This review introduces and discusses recently developed engineering strategies aimed at improving the mechanical stability of IS-OPVs. Furthermore, this review summarizes various experimental methods to assess the performance of IS-OPVs and discusses the insights gained from these experiments in relation to fabricating mechanically stable IS-OPVs with enhanced performance.

中文翻译：

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本征可拉伸聚合物光伏的稳定性：基本原理、成就和前景


可拉伸有机光伏发电最近作为可穿戴电子系统的有前途的电源引起了广泛关注。特别是，对本征可拉伸有机光伏 （IS-OPV） 的研究已经加速，因为 IS-OPV 的独特优势是其固有的变形能力，这不依赖于制造工艺或预处理方法。值得注意的是，在拉伸过程中，光活性面积增加，表明功率输出可能增加，并强调了 IS-OPV 作为自供电电子系统电源的优势。尽管功率转换效率和可拉伸性取得了快速进步，但 IS-OPV 在市场采用方面仍然面临挑战。IS-OPV 最关键的性能因素是稳定性，它确保在机械应力下稳定运行。本文分析了降低 IS-OPV 稳定性的结构因素。鉴于其多层结构，机械故障可能由各种复杂的原因引起，从而使对导致性能下降的因素的调查和全面理解变得复杂。本文介绍并讨论了最近开发的旨在提高 IS-OPV 机械稳定性的工程策略。此外，本文总结了评估 IS-OPV 性能的各种实验方法，并讨论了从这些实验中获得的与制造具有增强性能的机械稳定 IS-OPV 相关的见解。