AY Single Crystals have excellent X-ray photoelectric properties due to their high X-ray light absorption coefficients, long-range balanced electron and hole transport, long carrier diffusion lengths (as long as 3 mm), and remarkably low trap densities. This material is positioning itself as the best alternative to CdTe and CdZnTe (CZT) crystals used in direct X-ray sensors. While CZT offers excellent absorptivity, it requires high-temperature processing conditions (>900 °C) and suffers from structural imperfections and compositional inhomogeneity. In contrast, perovskite single crystals possess the unique advantage of facile preparation using solution techniques at low (<100 °C) or even room temperature, enabling controlled growth of crystals with desired sizes and thicknesses at a low cost and high processing speed.

•Solution-processed compound semiconductor single crystals to be used in direct X-ray photodetectors and image sensors.

•High crystallinity and purity perovskite single crystals are grown at low temperatures, enabling precise control over crystal stoichiometry and dimensions.

•Excellent X-ray light absorption coefficients, long-range balanced electron and hole transport, long carrier diffusion lengths, and remarkably low trap densities that result in high X-ray detectivity.