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Dipole Relaxation Current in N-Type AIxGa1-xAs
Published online by Cambridge University Press: 22 February 2011
Abstract
Thermally stimulated depolarization current (TSDC) spectra are reported for AlxGa1-xAs alloys with direct and indirect bandgap for the first time. The experimental data reveal the presence of electric dipoles in both samples which are interpreted by using the negative-U DX center model. These data are fitted by a relaxation time distribution approach yielding average activation energies in close coincidence with the DX center binding energy value.
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- Copyright © Materials Research Society 1994
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