Research Highlights: Fused-Ring Electron Acceptor ITIC-Th: A Novel Stabilizer for Halide Perovskite Precursor Solution
The stability of perovskite solar cells (PSCs) has been greatly improved recently while very few studies focus on the long-term stability of the perovskite precursor solution. We report a novel route to greatly enhance the long-term stability of perovskite precursor solutions by incorporating a non-fullerene small molecule ITIC-Th. We found that the incorporation of ITIC-Th in the perovskite precursor solution can effectively suppress the unwanted yellow non-perovskite phase (δ-phase) commonly formed in the FAPbI3-based perovskite film made from a long-time aged precursor solution and consequently promote the formation of photoactive perovskite phase (α-phase).… Read More
