Uniform Perovskite Detector Film Cuts X-Ray Image Noise Ten-Fold at Ultralow Doses

A new perovskite X-ray detector film with greater vertical uniformity can reduce image noise ten-fold, enabling high-quality dental and biological specimen imaging at an ultralow dose of 40.6 nGyair per pixel.

• The team used a liquid-phase growth and annealing process to create thick perovskite films that collect charge consistently throughout their depth, unlike standard non-uniform detectors.
• In tests, the detector visualized tooth crowns and roots at doses substantially below those of a commercial dental X-ray system, suggesting potential for safer routine diagnostics and screening.

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