| 多分散溴碘化银乳剂的离子电导性质及表面空间电荷层 |
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| 引用本文： | 程学新,彭必先.多分散溴碘化银乳剂的离子电导性质及表面空间电荷层[J].影像科学与光化学,1986,4(2):7-11. |
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| 作者姓名： | 程学新 彭必先 |
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| 作者单位： | 中国科学院感光化学研究所 |
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| 摘 要： | 采用酶解沉降法将碘含量为6mol%的多分散的溴碘化银乳剂分成9个级份,测量各个级份的乳剂在不同温度下的离子电导率,求出它们的离子电导活化能和表面空间电荷层的特性参数。发现各个级份乳剂之间在离子电导性质上有很大的差异。随着碘含量的下降,离子电导活化能从0.30eV上升到0.41eV,同时表面电位也相对地变得越来越正。相应地它们的填隙银离子生成能也越来越大。还讨论了这些差异对各级乳剂的照相性能的影响。
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| 收稿时间： | 1985-03-30 |
THE IONIC CONDUCTION AND SURFACE SPACE CHARGE LAYERS OF POLYD1SPERSED SILVER HAL1DE EMULSION |
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| CHENG XUE-XIN,PENG BI-XIAN.THE IONIC CONDUCTION AND SURFACE SPACE CHARGE LAYERS OF POLYD1SPERSED SILVER HAL1DE EMULSION[J].Imaging Science and Photochemistry,1986,4(2):7-11. |
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| Authors: | CHENG XUE-XIN PENG BI-XIAN |
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| Affiliation: | Institute of Photographic Chemistry, Academia Sinica |
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| Abstract: | In the present paper a polydispersed iodobromide photographic emulsion (iodide content 6 mol percent) was divided into nine bunch emulsions with fine,middle and,coarse grains by means of enzymatic treatment. The ionic conductivity of the silver ha-lide microcrystals of each bunch was measured at different temperatures. The ionic conduction activation energy and the surface potential were calculated. It was found that there is a significant difference among different bunches in ionic conduction. The activation energy increases from 0.30 eV to 0.41eV,with decreasing iodide content,meanwhile,the surface potential becomes more and more positive and the interstitial silver ions formation energy becomes higher and higher. The effects of above-mentioned differences on the sensitometric characteristics of different bunches were discussed. |
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