| 片状多层结构卤化银微晶的制备、结构和性能的研究Ⅰ |
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| 引用本文： | 唐正文,崔学福,王素娥.片状多层结构卤化银微晶的制备、结构和性能的研究Ⅰ[J].影像科学与光化学,1993,11(3):244-250. |
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| 作者姓名： | 唐正文 崔学福 王素娥 |
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| 作者单位： | 中国科学院感光化学研究所 北京 100101 |
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| 摘 要： | 本文利用可控双注法制备了一系列片状多导层结构Ag(Br,I)微晶,用扫描透射电镜(STEM)与X射线能谱仪(EDS)对单个微晶进行了微区分析,结果表明碘离子在微晶中的分布正如所设计的那样呈层状分布。EDS分析结果表明,富碘层的碘离子向无碘层迁移,且富碘层的碘浓度愈高,迁移的趋势愈大。并用介电损耗Dember效应、表面显影和化学成熟等方法研究了片状多层结构微晶的结构与性能的关系。
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| 关 键 词： | 片状多层结构 X射线能谱 介电损耗 Dember效应 表面显影 |
| 收稿时间： | 1992-08-24 |
THE PREPARATION,STRUCTURE AND PROPERTY OF TABULAR MULTISTRUCTURE SILVER HALIDE MICROCRYSTALS I |
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| TANG ZHENG-WEN,GUI XUE-FU,WANG SU-E.THE PREPARATION,STRUCTURE AND PROPERTY OF TABULAR MULTISTRUCTURE SILVER HALIDE MICROCRYSTALS I[J].Imaging Science and Photochemistry,1993,11(3):244-250. |
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| Authors: | TANG ZHENG-WEN GUI XUE-FU WANG SU-E |
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| Affiliation: | The Institute of Photographic Chemistry, Academia Sinica, Beijing 100101, P. R. China |
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| Abstract: | A Series of multistructure tabular iodobromide microcrystais with the same content and the different distribution of iodide ions were prepared by double-jet precipitation. The distribution of iodide ions in the microareas of a crystal was measured by the means of combination of scanning transmissive electron microscope (STEM) and energy dispersive X-ray spectrometer (EDS). It was found that the iodide ions are distributed in different layers of a tabular microcrystal as designed, The results of EDS also showed the migration of iodide ions from the iodide-enriched layer to the pure AgBr layer. The higher the iodide ions are concentrated in the iodideenruched layer, the more the iodide ions migrate from this layer to the pure AgBr layer.The relations between structures and properties of multistructure tabular microcrystals were studied by the methods of dielectric loss, Dember effect and surface development, The results showed that the microcrystal, multistrucures affect apperently their photo-physical properties, as ionic conductivity, Dember photovoltage, and the latent image of multistructure tabular microcrystals always forms preferentially in the pure AgBr or iodide-lacked layers. |
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| Keywords: | multistructure tabular microcrystal distribution of iodide ions energy disperce spectroscopy dielectric loss Dember effect surface deveropment |
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