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首页> 外文期刊>Journal of Non-Crystalline Solids: A Journal Devoted to Oxide, Halide, Chalcogenide and Metallic Glasses, Amorphous Semiconductors, Non-Crystalline Films, Glass-Ceramics and Glassy Composites >Charge carrier concentration and mobility of ions in a silica glass
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Charge carrier concentration and mobility of ions in a silica glass

机译：石英玻璃中的电荷载流子浓度和离子迁移率

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Separate determination of the charge carrier concentration and the ionic mobility in glasses is difficult but useful in understanding the source of the conductivity variation in glasses with varying glass composition, cooling rates as well as temperatures. We suggest that the dielectric relaxation strength of the space charge polarization can be used to estimate the ionic charge carrier concentration and combining the result with de conductivity, the ionic mobility can be determined. The method was used to determine the origin of the conductivity changes of a silica glass caused by fictive temperature change and water addition. We found that the observed conductivity decrease with increasing fictive temperature is due primarily to a decrease in mobility while the observed conductivity decrease with increasing water content is due primarily to a decrease in the charge carrier concentration. (C) 1998 Elsevier Science B.V. All rights reserved. [References: 55]
机译：分别确定玻璃中的电荷载流子浓度和离子迁移率是困难的，但对于理解具有变化的玻璃组成，冷却速率和温度的玻璃中电导率变化的来源很有用。我们建议，空间电荷极化的介电弛豫强度可用于估计离子载流子浓度，并将结果与​​去电导率结合起来，即可确定离子迁移率。该方法用于确定由虚拟温度变化和加水引起的石英玻璃电导率变化的起因。我们发现，观察到的电导率随虚拟温度的升高而降低主要是由于迁移率的降低，而观察到的电导率随水含量升高而降低的主要原因是电荷载流子浓度的降低。 （C）1998 Elsevier Science B.V.保留所有权利。 [参考：55]

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