Solar Energy Materials and Solar Cells, Vol.161, 444-448, 2017
Crystallization process of PbI2 solution in two-step deposition of CH3NH3PbI3 for high-performance perovskite solar cells
High quality CH3NH3PbI3 films have been successfully constructed by two-step method, using the PbI2 solution after dissolution-crystallization-dissolution treatment. Depending on the dense perovskite thin film morphology, a best and repeatable power conversion efficiency of 14.87% was achieved from the CH3NH3PbI3-based solar cells. Furtherly, excellent device stability was also exhibited, which was remained at more than 77% efficiency under 50% humidity for 10 days.