影像科学与光化学 ›› 1991, Vol. 9 ›› Issue (2): 101-106.DOI: 10.7517/j.issn.1674-0475.1991.02.101

• 研究论文 • 上一篇    下一篇

卤化银乳剂微晶体的结构与性能研究 Ⅴ.八面体核壳复合结构乳剂的电性质与感光性能

张鸿1, 王荣琴1, 彭必先1, 阎天堂2   

  1. 1. 中国科学院感光化学研究所 北京 100101;
    2. 中国科学技术大学近代化学系 合肥 200032
  • 收稿日期:1989-07-21 修回日期:1990-08-21 出版日期:1991-05-20 发布日期:1991-05-20
  • 通讯作者: 彭必先
  • 基金资助:
    轻工业科学技术发展基金

STUDY ON THE STRUCTURE AND PROPERTIES OF SILVER HALIDE EMULSION MICROCRYSTALS Ⅴ. THE ELECTRIC PROPERTIES AND THE SENSITOMETRIC BEHAVIO-UR OF OCTAHEDRAL COMPOSITE CORE-SHELL EMULSION MICROCRYSTALS

ZHANG HONG1, WANG RONG-QIN1, PENG BI-XIAN1, YAN TIAN-TANG2   

  1. 1. Institute of Photographic Chemistry, Acodcmia Sinico, Beijing 100101, P. R. China;
    2. Department of Modern Chemistry, University of Science and Technology, Hefei, 200032, P. R. China
  • Received:1989-07-21 Revised:1990-08-21 Online:1991-05-20 Published:1991-05-20

摘要: 本工作应用双注法制备了一系列不同碘含量的八面体核壳孔剂。测定了它们的光吸收,离子电导(介电损耗法)、光电导(微波光导法)和感光性能。结果表明:乳剂微晶体的光吸收和离子电导随着碘含量的增加而显著上升,光电导也随着碘含量的增加而增大,其光电子表减过程遵循二级反应动力学过程,光电子半衰期在碘含量为5mol%时为最大。在相同的化学敏化条件下,乳剂的感光度随碘含量增加而上升(碘含量0-12.5mol%)。

关键词: 感光化学, 核壳乳剂, 光吸收, 离子电导, 光电导

Abstract: A series of octahedral emulsion microcrystal with different iodide content was prepared by double-jet method with automatic control of pAg. Their light absorption, ionic and pho-toelectron conductivities were determined as a function of iodide content. It was shown hat the light absorption and ionic conductivity increase obviously with the iodide content increase. The same dependence is also with the photo-conductivity. The photoelectron decay obeys a second order reaction kinetic, the photoelectron lifetime increase with the iodide increase (0-5mol% range), reaching a maximum at 5mol% iodide content, and then turning to decrease a bit (7.5-12.5mol% range). Under the same sensitization conditions the photographic sensitivity of the emulsion microcrystals heightens with the increase of iodide content introduced during the preci pitation.

Key words: photographic chemistry, core-shell emulsion, ionic conductivity, photoconductivity, light absorption