Dynamics of nonequilibrium electrons on neutral center states of interstitial magnesium donors in silicon
Dynamics of nonequilibrium electrons on neutral center states of interstitial magnesium donors in silicon
Pavlov, S. G.; Deßmann, N.; Pohl, A.; Shuman, V. B.; Portsel, L. М.; Lodygin, А. N.; Astrov, Y. A.; Winnerl, S.; Schneider, H.; Stavrias, N.; van der Meer, A. F. G.; Tsyplenkov, V. V.; Kovalesky, K. A.; Zhukavin, R. K.; Shastin, V. N.; Abrosimov, N. V.; Hübers, H.-W.
Abstract
Subnanosecond dynamics of optically excited electrons bound to excited states of neutral magnesium donor centers in silicon has been investigated. Lifetimes of nonequilibrium electrons have been derived from the decay of the differential transmission at photon energies matching the intracenter and the impurity–to–conduction band transitions. In contrast to hydrogen-like shallow donors in silicon, significantly longer lifetimes have been observed. This indicates weaker two-phonon and off-resonant interactions dominate the relaxation processes in contrast to the single-intervalley-phonon assisted impurity-phonon interactions in the case of shallow donors in silicon.
Keywords: Extrinsic semiconductors; dynamics of electrons from impurities; magnesium doping of silicon
Beteiligte Forschungsanlagen
- Strahlungsquelle ELBE DOI: 10.17815/jlsrf-2-58
Verknüpfte Publikationen
- DOI: 10.17815/jlsrf-2-58 is cited by this (Id 24025) publication
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Physical Review B 94(2016), 075208
DOI: 10.1103/PhysRevB.94.075208
Cited 9 times in Scopus
Permalink: https://www.hzdr.de/publications/Publ-24025