Abstract
During the first German Spacelab Mission D1, growth of sulphur-doped InP was performed by the travelling-heater method (THM) under microgravity conditions ( μg). Compared to the 1g reference experiments, the crystal grown under microgravity conditions shows a more homogeneous dopant distribution due to the suppression of buoyancy-driven convection to a great extent. Residual dopant inhomogeneities belong to growth kinetics (type II striations) and to striations (rotationals) due to a temperature asymmetry in the monoellipsoidal mirror heater “ELLI”. With respect to different rotation rates of the sample, microscopic growth rates could be calculated for different growth periods. They show that type II striations as traces of macrosteps occur together with high growth rates.
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