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Biexciton fluorescence line shape in CdS

  • R. Planel
  • C. Benoî à la Guillaume
Excitonic Molecules
Part of the Lecture Notes in Physics book series (LNP, volume 57)

Abstract

A careful experimental study of the M line in CdS is presented, with special attention to polarisation properties. The data can be fitted by a theoretical model of the line shape in both polarization (E⊥C and E//C) taking into account the results of group theory, with the recombination of the molecule considered as giving two polaritons. A more precise value of the energy EB(o) of the ground state of the excitonic molecule is obtained EB(o)/2 = 2.5497 eV ± 0.2 meV.

Keywords

Line Shape Excitation Level Experimental Line Shape Excitonic Molecule Theoretical Line Shape 
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.

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References

  1. 1).
    S. Shionoya, H. Saito, E. Hanamura and O. Akimoto: Solid State Comm. 12 (1973) 223.Google Scholar
  2. 2).
    E. Hanamura in “Luminescence of Crystals, Molecule s and Solutions” ed. F. Williams (Plenum Press, N.Y., 1973) p.121.Google Scholar
  3. 3).
    A. F. Dite, V. I. Revenko, V. R. Timofeev and P. D. Altukhov: Zh ETF let. 18 (1973) 579 (JETP Lett. 18 (1974) 341).Google Scholar
  4. 4).
    J. Voigt and G. Mauersberger: Phys. Stat. sol. (b) 60 (1973) 679.Google Scholar
  5. 5).
    A more detailed paper on the model has been submitted for publication in Phys. Rev.Google Scholar
  6. 6).
    We have used the following parameter for CdS: ε = 7.3, exciton masses m// = 5.2 mo, m = 0.9 mo; EexL = 2.5540 and ΔLT = 1.9 meV. Our value of photon energies take into account the refractive index of air, a point which has been usually omitted, as in the well known paper of J. J. Hopfield and D. G. Thomas, Phys. Rev. 122 (1961) 35.Google Scholar

Copyright information

© Springer-Verlag 1976

Authors and Affiliations

  • R. Planel
    • 1
  • C. Benoî à la Guillaume
    • 1
  1. 1.Groupe de Physique des Solides de l' Ecole Normale SupérieureUniversité de Paris VIIParis Cedex 05

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