Abstract: As people's attention to renewable energy continues to grow, solar cells are also receiving increasing attention. Perovskite solar cells, as a new type of solar cell, have made significant progress in recent years and have become one of the hotspots in the field of solar cells. Flexible perovskite solar cells are a typical type, with lightweight, high efficiency, and high flexibility, making them ideal for practical applications such as wearable devices and mobile power sources.
Nevertheless, the mechanical stability of flexible perovskite solar cell has always been an important issue restricting their application. In the preparation and actual use of the cells, the generation and expansion of cracks and defects are considered to be the main cause of device failure. To study the mechanical stability of flexible perovskite solar cells, extensive experimental and theoretical research work has been carried out. Through mechanical parameter testing, we used first-principles calculations and nanoindentation techniques to measure the elastic modulus and hardness, and introduced these parameters into the finite element software for simulation. We studied the mechanical stability, including interfaces of flexible substrates, flexible electrodes, hole transport layers, perovskite films, electron transport layers, and various functional layers of flexible perovskite solar cells with different device structures. We tried to promote the growth of perovskite grains by the experimental test method and finite element simulation verification of the mechanical properties of flexible perovskite solar cells, and targeted reinforcement method selection and preparation of more flexible electrode materials, such as structural design or thinning treatment of the substrate, and optimizing the treatment of perovskite film. In addition, the improvement effect of the overall mechanical stability of the device was compared by measuring the photovoltaic conversion efficiency after bending cycle times from its original value.
Although there are still some problems with the mechanical performance of flexible perovskite solar cells at present, important progress has been made. This not only helps to optimize the mechanical and optoelectronic performance of flexible perovskite solar cells but also promotes the future commercialization of these devices and their widespread application in fields such as wearable devices and electronic textiles. With the continuous advancement of technology and in-depth research, the mechanical stability of flexible perovskite solar cells will be better improved, providing better guarantee for the development of wearable devices and electronic textiles.

Key words: flexible perovskite solar cell, wearable, mechanical stability, perovskite film, finite element simulation

摘要： 近年来，随着钙钛矿光伏技术的迅速发展，柔性钙钛矿太阳能电池由于具有重量轻、高效率和高柔韧性等特点，在柔性可穿戴设备应用中具有广阔的发展前景。本文综述了近年来研究学者在柔性基底、柔性电极、电荷传输层、钙钛矿薄膜及其与界面处的力学稳定性的改善工作，同时阐述了柔性钙钛矿太阳能电池的力学性能实验测试方法以及有限元模拟验证的进展状况，为柔性钙钛矿太阳能电池的进一步研究提供了参考和借鉴。最后，对柔性钙钛矿太阳能电池的未来发展方向进行了展望，并指出了未来研究的重点。

关键词: 柔性钙钛矿太阳能电池, 可穿戴, 力学稳定性, 钙钛矿薄膜, 有限元模拟