Perovskite solar cell repairing method based on external voltage intervention

The invention relates to a perovskite solar cell repairing method based on external voltage intervention, and the method comprises the steps: applying an external voltage to a photovoltaic device which takes perovskite crystals as a light absorption layer material, regulating and controlling the ion migration motion of a perovskite solar cell, relieving the perovskite ion accumulation, and filling the defects of the device, thereby recovering the performance of the device. According to the invention, external bias voltage is introduced to induce perovskite ions to be redistributed, so that the perovskite ions are recombined with vacancy defects, and the photon-generated carrier extraction and transport capabilities of the device are optimized, thereby repairing the performance of the device. The method is simple, convenient and efficient, and has high popularization and application value. 本发明涉及一种基于外部电压干预的钙钛矿太阳电池修复方法，该方法通过向将钙钛矿晶体作为吸光层材料的光伏器件施加外部电压，调控钙钛矿太阳电池的离子迁移运动，缓解钙钛矿离子堆积并填充器件缺陷，从而恢复器件的性能。本发明通过引入外部偏置电压，诱导钙钛矿