University of Tokyo researchers have studies the structure of organometal halide perovskites, a ubiquitous class of solar cells and came up with interesting results.
Dr. Tae Woong Kim: “Until now, it has been believed each crystal phase of the perovskite solely exists at its given temperature range. However, in this research, we revealed their crystal phases coexist at room temperature and the coexistence induces self-organized superlattice structure. These evidences overturn the conventional theory. Especially, the existence of the spontaneous superlattice will maximize their potential for wide and diverse applications.”