Power supply equipment, employed in the Internet of Things (IoT) for instance, calls for efficient harvesting of solar energy from the environment sustainably. Sb₂Se₃ enjoys the advantages of unique one-dimensional crystal structure and low-temperature film growth, enabling the fabrication of flexible and lightweight solar cells. Therefore, Sb₂Se₃ solar cells are expected to have intrinsic advantages in powering IoT sensors. Herein, the device configuration and film fabrication of flexible Sb₂Se₃ solar cell was optimized and an efficiency up to 6.13% and power-per-weight of 2.04 W g^-1 were obtained, both of which are the highest records for flexible Sb₂Se₃ solar cells. Benefitting from the intrinsically high flexibility of Sb₂Se₃ and the thin flexible substrate, our device retained 96% of its initial performance after 1000-times bending at the extremely small curvature radius of 0.5 mm. Furthermore, the first Sb₂Se₃ mini-module (25 cm² area) was constructed and its application in powering a blue LED under all weather conditions and a flower monitor (IoT sensors) was demonstrated. This work opens an avenue toward flexible Sb₂Se₃ solar cells and points out its future research direction.

例如，物联网（IoT）中使用的电源设备要求可持续地从环境中高效收集太阳能。Sb ₂ Se ₃具有独特的一维晶体结构和低温薄膜生长的优点，从而能够制造出柔性轻质的太阳能电池。因此，Sb ₂ Se ₃太阳能电池有望在为物联网传感器供电时具有固有的优势。本文对柔性Sb ₂ Se ₃太阳能电池的器件结构和薄膜制造进行了优化，效率高达6.13％，单位重量功率为2.04 W g ^-1，均为柔性Sb的最高记录。₂ Se ₃太阳能电池。得益于Sb ₂ Se ₃和薄的柔性基板固有的高柔韧性，我们的设备在0.5 mm的极小曲率半径下弯曲1000次后仍保持了96％的初始性能。此外，构造了第一个Sb ₂ Se ₃微型模块（面积为25 cm ²），并演示了其在全天候条件下为蓝色LED供电以及花卉监控器（IoT传感器）的应用。这项工作为柔性Sb ₂ Se ₃太阳能电池开辟了道路，并指出了其未来的研究方向。