Abstract
In this publication, we report the results of studying a multilayerd nonperiodic SiGe/Si structure by the methods of X-ray diffractometry, grazing-angle X-ray reflectometry, and secondary-ion mass spectrometry (SIMS). Special attention is paid to the processing of the component distribution profile using the SIMS method and to consideration of the most significant experimental distortions introduced by this method. A method for processing the measured composition distribution profile with subsequent consideration of the influence of matrix effects, variation in the etching rate, and remnants of ion sputtering is suggested. The results of such processing are compared with a structure model obtained upon combined analysis of X-ray diffractometry and grazing-angle reflectometry data. Good agreement between the results is established. It is shown that the combined use of independent techniques makes it possible to improve the methods of secondary-ion mass spectrometry and grazing-incidence reflectometry as applied to an analysis of multilayered heteroepitaxial structures (to increase the accuracy and informativity of these methods).
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Original Russian Text © P.A. Yunin, Yu.N. Drozdov, M.N. Drozdov, S.A. Korolev, D.N. Lobanov, 2013, published in Fizika i Tekhnika Poluprovodnikov, 2013, Vol. 47, No. 12, pp. 1580–1585.
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Yunin, P.A., Drozdov, Y.N., Drozdov, M.N. et al. Study of multilayered SiGe semiconductor structures by X-ray diffractometry, grazing-incidence X-ray reflectometry, and secondary-ion mass spectrometry. Semiconductors 47, 1556–1561 (2013). https://doi.org/10.1134/S1063782613120221
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DOI: https://doi.org/10.1134/S1063782613120221