【摘要】 本文综述了近年来乳剂制备中常用的新型掺杂剂 ,较详细地介绍了两种能提高光电子利用效率的掺杂剂 ,即过渡金属络合物浅电子陷阱掺杂剂和羧酸盐(酯 )有机空穴陷阱掺杂剂 ,总结了掺杂剂的选择原则 ,并举例说明了掺杂剂对乳剂感光度的影响 .更多还原

【Abstract】 Two new types of dopants are introduced in this paper. One type is a transition metal complex dopant which can create shallow electron traps in silver halide grains. The other is a carboxylate organic compound which can create hole traps in the silver halide grains. Both types of traps can effectively prevent the photoelectrons and the holes from recombination and hence increase the efficiency of the latent image formation, resulting in significant increase of the sensitivity of the photographic emulsions. The principles of selecting dopants are presented. Some experimental results in patents are provided to illustrate the effects of dopants on the photographic properties of the silver halide emulsion.更多还原