Manifestation of metastable localized hole states in the slow kinetics of the edge luminescence of n-GaAs
Akimov A. V. , Kaplyanskii A. A. , Krivolapchuk V. V. , Moskalenko E. S.
A study has been made of the effect of heat pulses on the microsecond-range kinetics of the (free hole)-(neutral donor) luminescence which has been observed in л-GaAs at T0 = 1.7 K. The results of this study show that this kinetics is governed by a slow, nonactivated replenishment of the concentration of free holes from localized metastable states with an energy below the top of the GaAs valence band.