Utilization of reuse PbI2 for perovskite solar cell fabrication

Perovskite solar cells have several advantages over traditional solar cells such as the ability to control the film morphology during the deposition and crystallization of the perovskite layer. The efficiency of perovskite solar cells can be modified using physical and chemical techniques to achieve better efficiencies. In this paper, we study the fabrication of typical inverted structure perovskite solar cell using reuse PbI2. The optimization condition of PbI2 recycle based perovskite solar cell is reported with the maximum power conversion efficiency of 4.14% which is comparable to the cell made by fresh PbI2. Out finding has shown the potential of reuse PbI2 precursor which eventually leads to cost reduction in perovskite solar cell fabrication.