Nature Communications (Aug 2018)
2D perovskite stabilized phase-pure formamidinium perovskite solar cells
Abstract
Utilizing mixed-cation-halide can improve stability of the formamidinium perovskite films and devices but sacrifices the photocurrent due to an increase in bandgap. Here Lee et al. introduced small amounts of 2D perovskite to obtain high efficiency and stability based on phase-pure formamidinium based perovskite.