氯化银立方体微晶乳剂和{100}面扁平微晶乳剂的甲酸盐掺杂增感

将甲酸盐掺杂在乳剂微晶不同位置处，制备成氯化银立方体微晶乳剂和{100}面扁平微晶乳剂．实验发现：作为正空穴捕获剂，适当计量的甲酸盐在不增加乳剂灰雾的前提下，可使上述乳剂的感光度提升3—8倍．甲酸盐在两种晶形乳剂的不同位置掺杂的研究结果显示，甲酸盐均匀掺杂可比表面掺杂获得更高的感光度．在两种乳剂中甲酸盐掺杂增感都可与其后的硫增感、硫加金增感以及光谱增感协同作用，进一步提升乳剂的感光性能．

Sensitization of Formate Dopant to Cubic and {100} Tabular Silver Chloride Microcrystals

Silver chloride cubic emulsions and {100} T-grain emulsions doped by formate on different positions of microcrystal were prepared. As a hole-traping dopant, formate can enhance the photographic sensitivity of the emulsions as high as 3-8 times without an increase in fog density. It was noted that the photosensitivity of the emulsions homogeneously doped by formate was higher than that of the emulsions doped only on surfaces. Synergetic sensitizing effects of the doped formate and sulfur or sulfur-plus-gold or spectral sensitization were observed in every doped emulsion, which can improve the sensitometric characteristics of the emulsion further.