Recently, Professor Li Yaowen's team from the College of Chemistry, Chemical Engineering and Materials Science of Soochow University, along with their collaborators, published a research paper in Nature with Soochow University as the first corresponding institution. The paper is titled "Strain regulation retards natural operation decay of perovskite solar cells."

Professor Li's team initially investigated the degradation behavior of perovskite solar cells under continuous illumination and day-night cycling operation modes. They designed and synthesized a series of ligand materials to eliminate lattice strain variations and stabilize the perovskite lattice.

Figure 1: Schematic diagram illustrating the degradation mechanism of perovskite solar cells under continuous illumination and day-night cycling operation modes

This work unveils the unique degradation mechanism of perovskite solar cells under day-night cycling operation modes, emphasizing the necessity of stabilizing the lattice to enhance the practical operational lifespan of the cells. Furthermore, the study highlights the importance of establishing lifetime assessment methods for perovskite solar cells with soft lattice characteristics in practical applications, which will accelerate their commercialization process.

Figure 2: Performance study of perovskite solar cells fabricated based on Ph-Se-Cl

Paper Link: https://www.nature.com/articles/s41586-024-08161-x#Sec3