T. Shima et al., LOW-ENERGY NITROGEN-ION DOPING INTO GAAS AND ITS OPTICAL-PROPERTIES, Materials science & engineering. A, Structural materials: properties, microstructure and processing, 253(1-2), 1998, pp. 301-305
Nitrogen (N) ions were impinged during the epitaxial growth of GaAs us
ing combined ion beam and molecular beam epitaxy (CIBMBE) method. Low-
temperature photoluminescence measurements showed that incorporated ni
trogen ([N] < similar to 1 x 10(18) cm(-3)) is optically active with a
substrate temperature of 550 degrees C and a N+ ion acceleration ener
gy of 100 eV. For higher [N] of similar to 2 x 10(18) cm(-3), N-relate
d emissions can be found after high temperature (650-850 degrees C) an
nealing. We discuss the annealing effects and also the novel emissions
found after annealing at high temperature (750 degrees C) with a [N]
of similar to 1 x 10(19) cm(-3). (C) 1998 Elsevier Science S.A. All ri
ghts reserved.