AgBr

Silver bromide (AgBr) is an ionic semiconductor compound belonging to the silver halide family, characterized by a face-centered cubic crystal structure and wide bandgap. It is the primary light-sensitive material in photographic emulsions and imaging films, where its ability to form stable latent images under visible and near-infrared exposure makes it the industry standard for analog photography, X-ray detection, and high-resolution imaging applications. AgBr's sensitivity to light, combined with its chemical stability and well-established processing chemistry, makes it preferred over alternative halides in situations where fine grain structure, high resolution, and archival stability are critical; however, its use is declining in consumer applications due to the shift toward digital imaging, though it remains essential in specialized scientific, medical, and archival photography sectors.