Silver brom(oiod)ide emulsions of increased sensitivity in the near infrared

Emulsions de bromure/iodure d'argent a sensibilite accrue dans le proche infra-rouge

Abstract

SILVER BROM(OIOD)IDE EMULSIONS OF INCREASED SENSITIVITY IN THE NEAR INFRARED Abstract of the Disclosure A photographic emulsion is disclosed in which an infrared spectral sensitizing dye is adsorbed to the surface of silver bromide grains optionally containing iodide. The grains are formed in the presence of a hexacoordination complex of iron and at least three cyanide ligands to counteract dye desensitization.

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