Kirigami-Based Highly Stretchable Thin Film Solar Cells That Are Mechanically Stable for More than 1000 Cycles
Kirigami-Based Highly Stretchable Thin Film Solar Cells That Are Mechanically Stable for More than 1000 Cycles
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基于 Kirigami 的高可拉伸薄膜太阳能电池，机械性能稳定，循环次数超过 1000 次
DOI：
10.1021/acsnano.9b06562
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发表时间：
2020-02-01
期刊：
影响因子：
17.1
通讯作者：
Song, Weijie
中科院分区：
文献类型：
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作者：
Li, Hongjiang;Wang, Weiyan;Song, Weijie
开发可适应大应变并具有高循环机械耐久性的可拉伸太阳能电池对于可穿戴和皮肤界面电子应用具有挑战性。在这项工作中，我们使用kirigami设计展示了这种太阳能电池。实验和机械模拟表明，kirigami结构通过平面外变形有效地赋予钙钛矿太阳能电池（PSC）可拉伸性，这显著降低了器件中的应力。具有最佳几何参数的基于kirigami的PSC表现出高机械变形性，包括拉伸性（应变高达200%）、扭转性（角度高达450度）和弯曲性（半径低至0.5 mm）。更重要的是，kirigami PSC显示出高机械耐久性，即使在1000次重复拉伸、扭转和弯曲循环后，性能几乎不变。本文提出的用于可拉伸PSC的kirigami设计提供了一种有前途的策略，以实现太阳能电池以及其他光电器件的高变形性。
Exploiting stretchable solar cells that can accommodate large strain and feature high cyclic mechanical endurance is challenging for wearable and skin-interfaced electronics application. In this work, we demonstrated such solar cells using the kirigami design. Experiments and mechanical simulations showed that the kirigami structure effectively imparted stretchability to perovskite solar cells (PSCs) through out-of-plane deformation, which significantly reduced the stress in devices. The kirigami-based PSCs with optimal geometric parameters exhibited high mechanical deformability, including stretchability (strain up to 200%), twistability (angle up to 450 degrees), and bendability (radius down to 0.5 mm). More importantly, the kirigami PSCs revealed high mechanical endurance with almost unchanged performance even after 1000 repetitive stretching, twisting, and bending cycles. This kirigami design for stretchable PSCs presented here provides a promising strategy to achieve high deformability for solar cells as well as other optoelectronic devices.