The effect of the dynamic adsorption mode on impedance of composite structures with porous silicon

被引：0
|
作者：
A. Yu. Karlach
G. V. Kuznetsov
S. V. Litvinenko
Yu. S. Milovanov
V. A. Skryshevsky
机构：
[1] Taras Shevchenko National University of Kyiv,
来源：
Semiconductors | 2010年 / 44卷
关键词：
Composite Structure; Porous Silicon; Silicon Powder; Imped Ance; External Reactant;
D O I：
暂无
中图分类号：
学科分类号：
摘要：
Impedance and optical properties of pressed composites based on microcrystalline and nanoporous silicon powders were studied. Porous silicon crystallites were obtained by stain etching of initial microcrystalline silicon powder. Oxygen passivation of the surface during porous-powder formation provided stability of composite characteristics. An analysis of experimental dependences of the impedance in a frequency range of 1–106 Hz allowed separation of contributions of grain bulk and crystallite interfaces to the total composite conductivity. The results of the study of the time dependences of the impedance were used to determine the variation rates of electrical parameters of composite structures under dynamic adsorption-desorption influence of external reactants (H2O and C2H5OH).
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页码：1342 / 1348
页数：6
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