Electrical impedance spectroscopy and electrical response in metal/non-metal systems |
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| Authors: | PETR VIŠČOR A. DELONG M. DRŠTIČKA K. HLADIL V. KOLAŘÍK F. OLSEN |
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| Affiliation: | 1. Institute of Mahematics and Physics, Roskilde University Centre , Roskilde, 4000, Denmark;2. Institute of Scientific Instruments of the Czechoslovak Academy of Sciences , Kralovopolska 147, Brno, 614 64, Czechoslovakia |
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| Abstract: | A new analysis of the electrical response of a macroscopic solid state system to an arbitrary electrical voltage input is presented. The results indicate that with a small, sinusoidal voltage input within the classical frequency range (ω < 1010Hz), the electrical response in spatially homogeneous systems mirrors first of all the static, spatial distribution of the mobile charge carrier density through the local electrical conductivity relaxation time. This enables any system, inclusive interface and electrical contact regions to be modelled by a simple, passive R, C electrical network, where each of the network elements has a very direct physical meaning. Ultra pure, single crystal silicon, pure polycrystalline silicon and Al-Al2O3-Au metal-insulator-metal (MIM) structure are used as illustrative examples. |
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