One-Dimensional Hybrid Lead Halide Crystals with Molecular Pb–N Coordination for High-Performance Radiation Detection

Low-dimensional hybrid metal halides (HMHs) are promising for next-generation optoelectronics due to their structural diversity and excellent photophysical properties. However, weak ionic interaction and electronic coupling between organic–inorganic moieties lead to structural instability and inferior carrier transport. Here, we report one-dimensional hybrid lead halide crystals using multidentate aminoazole molecules that form Pb–N coordination bonds at the organic–inorganic interface. This dual-side bonding locks the hybrid structure, hinders ion migration, and promotes charge transport through electronic orbital overlap. An X-ray detector based on ATDZPbBr3 polycrystalline wafers achieves the highest sensitivity of 1.63 × 104 μC Gyair–1 cm–2 and an ultralow detection limit of 19.7 nGy s–1. This work establishes coordination chemistry as a powerful design paradigm for stable, high-performance hybrid semiconductors.