Interfacial misfit array formation for GaSb growth on GaAs

  • Shenghong Huang
    University of New Mexico 1 Department of Earth and Planetary Sciences, , Albuquerque, New Mexico 87131, USA
  • Ganesh Balakrishnan
    University of New Mexico 2 Center for High Technology Materials, , Albuquerque, New Mexico 87106, USA
  • Diana L. Huffaker
    University of California 3 Department of Electrical Engineering and California Nano Systems Institute, , Los Angeles, California 90095, USA

書誌事項

公開日
2009-05-15
DOI
  • 10.1063/1.3129562
公開者
AIP Publishing

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説明

<jats:p>The manuscript reports that the initial strain relaxation of highly mismatched GaSb layers grown on GaAs (001) is governed by the two-dimensional (2D), periodic interfacial misfit (IMF) dislocation array growth mode. Under optimized growth conditions, only pure 90° dislocations are generated along both [110] and [11¯0] directions that are located at GaSb/GaAs interface, which leads to very low threading dislocation density propagated along the growth direction. The long-range uniformity and subsequent strain relaxation of the 2D and periodic IMF array are demonstrated via transmission electron microscopy and scanning transmission electron microscopy images at GaSb/GaAs interface.</jats:p>

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