Sealed-ampoule diffusion of zinc into Ga1−xAlxAs at 650 °C

The diffusivity of the zinc Ga1−xAlxAs at 650 °C was studied using sealed-ampoule diffusion. Whereas Ageno, Roedel, Mellen, and Escher [Appl. Phys. Lett. 47, 1193 (1985)] found dramatic decreases in the zinc diffusivity at xAl≊0.05 and xAl≊0.20 using open-tube diffusion, the results of the present study show that the sealed-ampoule technique results in a more uniform dependence of the zinc diffusivity on aluminum concentration.