Carbon electrode-based hole transport layer-free perovskite solar cells (C–PSCs) are widely recognized as a competitive candidate towards practical applications, due to their advantages of low-cost, easy-fabrication, and long-term stability. However, fully low-temperature preparation of this type of solar cells on flexible substrates remains a huge challenge. Here, the all carbon electrode-based flexible C–PSCs with the structure of polyethylene terephthalate (PET)/graphene-silver nanowires (graphene–AgNWs)/SnO₂/CH₃NH₃PbI₃/Carbon are successfully prepared by low-temperature solution process. By optimizing the fabrication condition, an optimal efficiency of 9.73% is obtained, which is the highest value reported so far for flexible C–PSCs. Meanwhile, these flexible devices demonstrate superior mechanical robustness in comparison with their counterparts fabricated on flexible indium tin oxide (ITO)/PET substrates as well as excellent long-term durability. The present study can provide a simple way to fabricate low cost, highly efficient and highly stable perovskite solar cells for various applications.

基于碳电极的无空穴传输层的钙钛矿太阳能电池（C–PSC）具有低成本，易于制造和长期稳定性的优点，因此被广泛认为是实际应用中的竞争者。然而，在柔性基板上完全低温制备这种类型的太阳能电池仍然是巨大的挑战。在这里，具有全碳电极的柔性C–PSC具有聚对苯二甲酸乙二醇酯（PET）/石墨烯-银纳米线（graphene–AgNWs）/ SnO ₂ / CH ₃ NH ₃ PbI _3的结构/碳通过低温固溶工艺成功制备。通过优化制造条件，可获得9.73％的最佳效率，这是迄今为止针对柔性C-PSC所报告的最高值。同时，与在挠性铟锡氧化物（ITO）/ PET基板上制造的同类器件相比，这些挠性器件具有出色的机械强度，并且具有出色的长期耐久性。本研究可以提供一种简单的方法来制造低成本，高效和高度稳定的钙钛矿太阳能电池，以用于各种应用。