Elimination of dislocations in bulk GaAs crystals grown by liquid‐phase electroepitaxy

作者: C. F. Boucher , O. Ueda , T. Bryskiewicz , J. Lagowski , H. C. Gatos

DOI: 10.1063/1.338831

关键词:

摘要: The dislocation density in bulk GaAs crystals (up to 4 mm thick) grown by liquid‐phase electroepitaxy (LPEE) is found be significantly reduced (by as much a factor of 20) relative that the substrate. This reduction takes place when thickness growing crystal exceeds critical value 50–70 μm. It accompanied formation misfit arrays identified transmission electron microscopy interface region between substrate and crystals. These findings suggest caused small but finite lattice mismatch epitaxial‐quality relatively inferior quality melt‐grown Dislocations which propagate from into LPEE are forced stress move laterally forming dislocations.

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