Equilibrium analysis of lattice-mismatched nanowire heterostructures

E. Ertekin, P. A. Greaney, T. D. Sands, D. C. Chrzan

Research output: Contribution to journalConference articlepeer-review


The quality of lattice-mismatched semiconductor heterojunctions is often limited by the presence of misfit dislocations. Nanowire geometries offer the promise of creating highly mismatched, yet dislocation free heterojunctions. A simple model, based upon the critical thickness model of Matthews and Blakeslee for misfit dislocation formation in planar heterostructures, illustrates that there exists a critical nanowire radius for which a coherent heterostructured nanowire system is unstable with respect to the formation of misfit dislocations. The model indicates that within the nanowire geometry, it should be possible to create perfect heterojunctions with large lattice-mismatch.

Original languageEnglish (US)
Pages (from-to)769-774
Number of pages6
JournalMaterials Research Society Symposium - Proceedings
StatePublished - Jul 25 2003
Externally publishedYes
EventQuantum Confined Semiconductor Nanostructures - Boston MA, United States
Duration: Dec 2 2002Dec 5 2002

ASJC Scopus subject areas

  • Materials Science(all)
  • Condensed Matter Physics
  • Mechanics of Materials
  • Mechanical Engineering


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