Synthesis of Ag_(2)S nano-sized clusters and their chemical sensitizations in AgCl cubic and {100} tabular microcrystal imaging systems  

作　　者：LI Zhi ZHENG Tong CHEN Lijuan PENG Bixian YANG Li 

机构地区：[1]Technical Institute of Physics and Chemistry,Chinese Academy of Sciences,Beijing 100101,China [2]Beijing Satellite Manufacturing Factory,Beijing 100080,China

出　　处：《Science China Chemistry》2005年第6期516-522,共7页中国科学(化学英文版)

摘　　要：In recent years much attention has been devoted to AgCl emulsion owing to its se-rial advantages and inimitable potential.But in the research of this emulsion a thorny problem remains unsolved till now,which is the improvement in sensitivity is always accompanied with high fog density.In this work 5 nm Ag_(2)S particles were prepared and used as novel sensitizers in AgCl cubic and{100}tabular microcrystal emulsions.The novel sensitizer shows an effective sensitizing ability for silver chloride emulsion,and it is superior to the traditional Na_(2)S_(2)O_(3) sensi-tizer because by using it comparatively high sensitivity can be obtained with lower fog density.So the above sensitizing problem is going to be effectively solved.To discover the evolution mechanism of the sensitizer clusters and explain their excellent sensitizing properties,diffuse reflectance spectroscopy(DRS)was used as a probe on the AgCl microcrystal surface.

关 键 词：silver sulfide NANO-SIZED silver chloride{100}tabular microcrystal chemical sensitization. 

分 类 号：O614.122[理学—无机化学]