Doping of AgHal Heterophase Microcrystals by IrCl{sub}6{sup}(3-) Ions

摘要

The influence of the doping of heterocontacting AgBr/AgBr(I) and AgBr/AgCl grains by [IrCl{sub}6]{sup}(3-) ions on its photographic speed was investigated. Isometric and tabular crystals were used as a substrate. The incorporation of doping ions into the heterocontact zone was found to result in the change of the kinetics of photoinduced charge carriers interaction. The optimal doping ion concentration allows one to reveal the photographic speed increase and high-intensity reciprocal failure (HIRF) decrease. The photographic speed and HIRF values are shown to essentially depend on crystal habit. Based on the experimental data the phenomenological model of the photoprocess in doped heterophase AgHal microcrystals was suggested.