Optical Properties of Ge-Si Superlattices

  • T. P. Pearsall
Part of the NATO ASI Series book series (NSSB, volume 231)


The optical properties of strained Ge-Si heterostructures are reviewed with particular emphasis on both strain and ordering in determining the energy band structure. electro-reflectance and Raman Ge-Si superlattices with periodicities of a few atomic monolayers are now known to have properties quite distinct from those of Ge-Si alloys. Measurements of absorption, electro-reflectance and photo-luminescence have produced complementary supporting evidence for the existence of a direct band gap in certain Ge-Si superlattices.


Uniaxial Strain Direct Bandgap Super Lattice Critical Layer Thickness Optical Transition Energy 
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Copyright information

© Plenum Press, New York 1990

Authors and Affiliations

  • T. P. Pearsall
    • 1
  1. 1.Dept. of Electrical EngineeringUniversity of WashingtonSeattleUSA

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