Oriented Crystallization of Perovskite Film via Fluorine-Containing Hyperbranched Polymer for Efficient and Stable Perovskite Solar Cells.

ABSTRACT: Solution-processed perovskite solar cells have significant potential for large-scale manufacture, but the production of perovskite film with high crystallinity over large areas remains a major challenge. Here, a fluorine-containing hyperbranched polymer is shown for meticulous control of the perovskite film crystallization. Synergistic coordination of functional fluorine groups and perovskite species constrains the complex intermediate phases and facilitates the formation of spatially oriented perovskite films with high crystallinity and phase purity. Simultaneously, the thermal radical polymerization during the annealing process creates a cross-linked hydrophobic network, which enhances resistance to moisture. This results in efficient regular planar perovskite solar cells with a remarkab

SUBMITTER: Huang J 

PROVIDER: S-EPMC12783880 | biostudies-literature | 2026 Jan

REPOSITORIES: biostudies-literature