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Features of high-frequency measurements of the impedance of metal-insulator-semiconductor structures with an ultrathin oxide

  • Semiconductor Structures, Low-Dimensional Systems, and Quantum Phenomena
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Abstract

The possibilities of using the data of high-frequency measurements of the impedance of metal-oxide-semiconductor structures with an ultrathin insulating layer for determining the parameters of the semiconductor and the tunneling characteristics of the insulator are considered. If the accuracy of the experiment makes it possible to record both the active and reactive impedance components, the thickness of the surface depletion layer, the resistance of the semiconductor base portion, the differential tunnel conductivity of the insulating layer, and the differential tunneling-stimulated current of the generation of electron-hole pairs are calculated using the values of the capacitance and conduction of the structure measured at two frequencies. In the case, where the values of the active component of the impedance is beyond the accuracy of measurements, analysis of the parameters is possible upon four-frequency organization of the experiment from the values of only the capacitances with an increased accuracy of their measurements. A test for the necessary accuracy of data of such an experiment is formulated. If the test fails, it is possible to determine only the capacitance of the surface depletion layer in the semiconductor and, in this case, it is sufficient to implement only the single-frequency experiment.

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Authors and Affiliations

  1. Institute of Radio Engineering and Electronics, Russian Academy of Sciences, Fryazino branch, Fryazino, Moscow oblast, 141190, Russia

    E. I. Goldman, A. I. Levashova, S. A. Levashov & G. V. Chucheva

Authors
  1. E. I. Goldman
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  2. A. I. Levashova
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  3. S. A. Levashov
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  4. G. V. Chucheva
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Corresponding author

Correspondence to G. V. Chucheva.

Additional information

Original Russian Text © E.I. Goldman, A.I. Levashova, S.A. Levashov, G.V. Chucheva, 2015, published in Fizika i Tekhnika Poluprovodnikov, 2015, Vol. 49, No. 4, pp. 483–488.

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Goldman, E.I., Levashova, A.I., Levashov, S.A. et al. Features of high-frequency measurements of the impedance of metal-insulator-semiconductor structures with an ultrathin oxide. Semiconductors 49, 472–478 (2015). https://doi.org/10.1134/S1063782615040120

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  • DOI: https://doi.org/10.1134/S1063782615040120

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