High-Efficiency Fiber-Shaped Perovskite Solar Cell by Vapor-Assisted Deposition with a Record Efficiency of 10.79%

Since the breakthrough in power conversion efficiency when perovskite materials are used in planer-type solar cells, researchers have tried to apply perovskite materials into fiber-shaped solar cells in order to achieve higher power conversion efficiency. However, the difficulty of film fabrication on the fiber surface makes it difficult to obtain a high-quality perovskite film layer, and to obtain a large improvement in performance. In this work, the vapor-assisted deposition method is creatively applied in the preparation of fiber-shaped solar cells, and realizing the purpose of growing a high-quality perovskite film layer on the fiber substrate after some innovative changes are made to the fabrication processes. The power conversion efficiency of the finally obtained fiber-shaped perovskite solar cell reaches 10.79%, which is currently the highest power conversion efficiency in the field of fiber-shaped solar cells.