Sviridova O. Luminescence investigations of impurited nanodimensional centres creation and evolution processes at chemical sensibilization of halogenide silver photigraphical emulsions

The size-dependent effect in the luminescence of narrow zone (Eg=0.9 eV) semiconductor - silver sulfide - has been found. It is possible to detect the evolution of intrinsic clusters at the sulphureous sensibilization of photographical emulsions. It was shown the possibility of investigation of the intrinsic sulphureous silver clusters (nano-crystals) evolution at the surface of microcrystals during the process of sulphureous sensibilization of the emulsions with homogenous and heterogeneous ("core-shell" type) microcrystals in a basis of investigations of luminescence properties of the emulsions. The mechanism of photographical sensibility formation in halogen silver emulsions is connected. The mechanism of reducing sensibilization of halogen silver emulsions by alkalis is connected with thermal creation of impurited clusters according to the following diagram AgOH>Ag2O>Ag. The mechanism of hydrogen sensibilization of halogeneous emulsions occurred in compliance with the reaction Ag2O+H2 >H2O+2Ag.