Perovskite-based solar cells with high power conversion efficiencies (PCEs) are currently being demonstrated in solid-state device designs. Their elevated performances can possibly be attained with different non-standard geometries, for example, the fiber-shaped perovskite solar cells, in the light of careful design and engineering. Fiber-shaped solar cells are promising in smart textiles energy harvesting towards next-generation electronic applications and devices. They can be made with facile process and at low cost. Recently, fiber-shaped perovskite solar devices have been reported, particularly with the focus on the proof-of-concept in such non-traditional architectures. In this line, there are so many technical aspects which need to be addressed, if these photovoltaic (PV) cells are to be industrialized and produced massively. Herein, a well-organized and comprehensive discussion about the reported devices in this arena is presented. The challenges that need to be addressed, the possible solutions and the probable applications of these PV cells are also discussed. More still, the perovskite fiber-shaped PV cells with other fiber PV devices reported in literature in terms of their scope, characteristic designs, performances, and other technical considerations have been summarised.

中文翻译：

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钙钛矿太阳能纤维：现状，问题和挑战

具有高功率转换效率（PCE）的基于钙钛矿的太阳能电池目前正在固态设备设计中得到证明。根据精心的设计和工程，采用不同的非标准几何形状（例如，纤维状钙钛矿型太阳能电池）可能会获得较高的性能。纤维状太阳能电池在智能纺织品的能量收集中有望用于下一代电子应用和设备。它们可以用容易的过程和低成本来制造。最近，已经报道了纤维状钙钛矿太阳能器件，特别是在这种非传统架构中的概念验证方面。在这条线中，如果要对这些光伏（PV）电池进行工业化和大规模生产，那么有许多技术方面需要解决。在这里 提出了关于此领域中报告的设备的井井有条，全面的讨论。还讨论了这些PV电池需要解决的挑战，可能的解决方案和可能的应用。更进一步，已经总结了文献中报道的钙钛矿纤维状PV电池和其他纤维PV装置的范围，特征设计，性能和其他技术考虑。