硫族元素的化学增感  

Chemical Sensitization by Sulfur Family Elements

作　　者：喻敬之[1] 高育姿[1] 于文家 祁笑颖 

机构地区：[1]化工部感光化工研究院,沈阳110015

出　　处：《影像技术》2000年第4期22-28,共7页Image Technology

摘　　要：硒碲化合物用作化学增感剂可以显著提高感光乳剂的感光度 ,但也带来增加灰雾和降低反差的缺点。为了克服这个难题 ,曾进行大量研究工作 ,主要在改进硒碲化合物的化学结构和觅找其在制备乳剂过程中应用的最佳工艺方法等方面。Selenium and Tellurium compounds used as chemical sensitizers can increase significantly the speed of photographic emulsions,but can also draw the shortcoming of increasing the fog and decreasing the contrast.Aimed at overcoming these inconveniences,considerable research work was done,mainly on the improvement of the chemical structure of Se or Te compounds used and also on the technological method of using these compounds in the preparation of photographic emulsions.This paper presents a brief summary of recent advancements in this study.

关 键 词：化学增感 硫族元素 硒 碲 化学增感剂 照相材料 

分 类 号：TQ572.31[化学工程—精细化工]