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Ionization mechanisms of aluminum acceptor impurity in silicon

  • Atoms, Spectra, Radiations
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Abstract

Processes of ionization of shallow acceptor centers (ACs) in silicon are studied. In crystalline silicon samples with phosphorus (1.6×1013, 2.7×1013, and 2.3×1015cm−3) and boron (1.3×1015cm−3) impurities, μAl impurity atoms were produced by implantation of negative muons. It is found that thermal ionization is the main mechanism for ionizing the Al acceptor impurity in both p-type and n-type silicon with an impurity concentration of ≲1015cm−3 at T>45 K. The thermal ionization rate of Al ACs in Si varies from ∼105 to ∼106s−1 in the temperature range 45–55 K.

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Translated from Pis’ma v Zhurnal Éksperimental’no\(\overset{\lower0.5em\hbox{$\smash{\scriptscriptstyle\smile}$}}{l} \) i Teoretichesko\(\overset{\lower0.5em\hbox{$\smash{\scriptscriptstyle\smile}$}}{l} \) Fiziki, Vol. 79, No. 1, 2004, pp. 25–29.

Original Russian Text Copyright © 2004 by Mamedov, Andrianov, Herlach, Gorelkin, Stoikov, Zimmermann.

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Mamedov, T.N., Andrianov, D.G., Herlach, D. et al. Ionization mechanisms of aluminum acceptor impurity in silicon. Jetp Lett. 79, 21–24 (2004). https://doi.org/10.1134/1.1675914

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  • DOI: https://doi.org/10.1134/1.1675914

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