One-pot synthesized millimeter-sized perovskite single crystals for photodetectors

In this work, we fabricated millimeter-sized perovskite single crystal and applied it into photodetectors. The yellowphase perovskite crystals can be obtained through solvent circulation and evaporation, which shows smooth surface and square-shape, and emits green color under 365 nm UV excitation. The photodetector based on it displayed larger response speed and high spectral responsivity.