Study on Characteristics of Nanometer-sized Silver Iodobromide Emulsion

Ever since C.R.Berry found quantum size effect on nanometer-sized AgX grain and made studies on its anomalous absorption behaviour, much effort has been made on different aspects of nanometer-sized grain emulsion. H.Thiry, M.Iwasaki and his coworkers prepared nanometer-sized AgBr or AgBrI grain emulsion below 30nm scale and made some attempts on spectral sensitization; Investigated the mixture of AgBr and AgI emulsion with nanometer scale grains, T.S.Petrova found photographic speed of the mixture was optimum at 2mol% to 4mol% of AgI; K.P.Johanson studied the static and dynamic emission of nanometer-sized AgBr grain prepared in AOT reverse micelle. In our earlier work, AgBrI grains between 13 and 30 nm of diameter were prepared by complexing precipitation and the mechanism of silver filament growth in development was also discussed. In the present study, attention was focused on the study of stability and sulfur sensitization of AgBrI emulsion with nanometersized grains.