Advertisement

Isoelectronic Impurities in Semiconductors

  • Roger A. Faulkner
  • J. J. Hopfield

Abstract

The term “Isoelectronic Impurity” is used to denote an impurity center in a crystal arising when an atom from the same column of the periodic table as one of the constituents of the host crystal substitutes for that constituent. Isoelectronic substitutions in certain wideband gap semiconductors have a profound effect on the optical properties of the materials for photon energies in the vicinity of the band gap. In particular, the impurity systems GaP:N, GaP:Bi, and ZnTe:0 exhibit sharp absorption lines and CdS:Te exhibits an absorption band lying within the band gaps of the pure crystals.1,2,3,4 These lines can be attributed to exciton bound states at the impurities.

Keywords

Bloch Function Free Hole Wannier Function Bound State Energy Localize Exciton 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

Preview

Unable to display preview. Download preview PDF.

Unable to display preview. Download preview PDF.

References

  1. 1.
    D. G. Thomas and J. J. Hopfield, Phys. Rev. 150, 680 (1966).ADSCrossRefGoogle Scholar
  2. 2.
    D. G. Thomas, J. J. Hopfield, and R. T. Lynch, Phys. Rev. Letters 17, 312 (1966).ADSCrossRefGoogle Scholar
  3. 3.
    J. D. Cuthbert and D. C. Thomas, Phys. Rev. 154, 763 (1967).ADSCrossRefGoogle Scholar
  4. 4.
    A. C. Aten, J. H. Haanstra, and H. de Vrier, Philips Research Reports 20, 395 (1965).Google Scholar
  5. 5.
    P. J. Dean, private communication.Google Scholar
  6. 6.
    J. J. Hopfield, P. J. Dean, and D. G. Thomas, Phys. Rev. 158, 748 (1967).ADSCrossRefGoogle Scholar
  7. 7.
    M. L. Cohen and T. K. Bergstresser, Phys. Rev. 141, 789 (1966).ADSCrossRefGoogle Scholar
  8. 8.
    Frank Herman and Sherwood Skillman, Atomic Structure Calculations, Prentice-Hall, Englewood Cliffs, N. J.Google Scholar
  9. 9.
    Joseph Callaway and A. James Hughes, Phys. Rev. 156, 860 (1967).ADSCrossRefGoogle Scholar

Copyright information

© Springer Science+Business Media New York 1968

Authors and Affiliations

  • Roger A. Faulkner
    • 1
    • 2
  • J. J. Hopfield
    • 3
  1. 1.Palmer Physical LaboratoryPrinceton UniversityPrincetonUSA
  2. 2.Bell Telephone LaboratoriesMurray HillUSA
  3. 3.Palmer Physical LaboratoryPrinceton UniversityPrincetonUSA

Personalised recommendations