CuSbS2 Nanocrystals Applying in Organic–Inorganic Hybrid Photodetectors

CuSbS2 nanocrystals, synthesized via hot-injection method using oleylamine (OLA) as solvent, exhibited brick-like shape and were recognized as chalcostibite, verified by transmission electron microscopy (TEM) and X-ray diffraction (XRD) analysis. A high-performance photodetector based on a hybrid film of CuSbS2 nanocrystals and poly (3-hexylthiophene) was constructed. The device showed distinct "ON" and "OFF" states with a ratio of >5 in photocurrents responding to illumination. The high sensitivity and stability of the hybrid device reveals a broad prospect for use of the hybrid material in light detection and signal magnification. In industry, the hybrid material would be a good choice for large-area, low-cost, lightweight, and foldable products.