新型中空卤化银颗粒乳剂的制备和性能研究：V.中空卤化银T颗粒 …

８０年代以来，许多新型的卤化银微晶已在新开发的各种高质量感光材料中得到应用。近十年来在国内外文献中又出现新型中空卤化银微晶制备方法的报道。本文着重研究一种表面有许多小孔及凹坑的中空卤化银Ｔ颗粒的制备方法和感光性能。由于其独特的孔洞结构，使位错、缺陷增加，填隙银离子浓度增加和电子陷阱增多，潜影形成效率提高，从而达到提高乳剂感光性能的目的。

STUDY ON THE PREPARATION AND PROPERTY OF NOVEL HOLLOW GRAIN SILVER HALIDE EMULSIONS V.THE PREPARATION AND PHOTOGRAPHIC PROPERTY OF HOLLOW GRAIN TABULAR SILVER HALIDE EMULSIONS

Hollow tabular silver halide microcrystals were prepared by the method of using a suitable silver halide solvent. The relations between structures and properties of the hollow tabular microcrystal emulsions were studied by means of surface development, Dember effect, chemical sensitization, spectral sensitization and so on. The results show that: (1) the latent image is always formed preferentially around the holes of the hollow silver halide microcrystals; (2) there are more microcrystal defects and dislocations, more interstitial silver ions and more electron traps in hollow grains than in solid tabular grains; (3) compared with solid tabular AgBrI emulsions, the hollow T grain emulsions have higher surface reaction activity and higher chemical and spectral sensitivity; (4) all above mentioned advantages can be ascribed to the unique hole structure of hollow silver halide microcrystals.