C. Frank et K. Hein, GROWTH OF SEMIINSULATING GAAS CRYSTALS BY VERTICAL GRADIENT FREEZE TECHNIQUE, Crystal research and technology, 30(7), 1995, pp. 897-909
GaAs crystals having dislocation densities of 1-2 . 10(3) cm(-2) were
grown using VGF technique. In the grown crystals Si-Ga is the dominant
donor and C-As the dominant acceptor. Theoretical and experimental in
vestigations have shown the possibilities to influence on the silicon
and carbon content in GaAs. Based on these results, semiinsulating pro
perties in the crystals could be achieved reproducibly.