By adding different perovskite seeds to obtain high-quality perovskite films

Abstract

Organic-inorganic hybrid perovskite solar cells have attracted great attention in the past few decades due to their high efficiency and low cost of production. Hybrid perovskite solar cells have been widely investigated and commercialized due to their excellent performance in terms of power conversion efficiency and stability. However, there are still many challenges and challenges to be addressed to further improve their performance. In this paper, three kinds of lead iodide films of perovskite seeds were prepared by optimized film process, and the UV, XRD, SEM and steady-state fluorescence spectrum data of MAI, FAI and CsI showed that FAI's lead iodide film was most likely to be the best choice of perovskite absorbent layer material. This method provides a new strategy for preparing uniform and dense perovskite films.