Fast fabricated high performance antisolvent-free perovskite solar cells via dual-flash process

摘要

AbstractA uniform perovskite layer with full coverage, smooth top surface and enough thickness is essential for the performance of perovskite solar cells (PSCs). In this study, a solar cell with high-quality perovskite films as light absorbers is fabricated through a novel facile dual-flash method: first low pressure flash evaporation (LPFE), then high temperature flash annealing (HTFA) process. The high-quality perovskite films can be conducive not only to the separation and transmission of the electron and hole, but also to the absorption and utilization of sunlight. As a result, a high performance PSC with a solar-to-electrical power conversion efficiency of 19.15% is obtained. The entire perovskite films preparation can be achieved in low humidity air, showing a very promising prospect for industrial applications.Graphical abstractDisplay OmittedHighlights?A simplified low pressure flash evaporation method was developed for high-quality perovskite films.?Development of a time-saving and energy efficient production method for high-quality perovskite films.?Power conversion efficiency of the planar perovskite solar cell is enhanced from 17.03% to 19.15%.]]>