High excitation of direct semiconductors like CdS

  • G. O. Müller
  • M. Rösler
  • H. H. Weber
  • R. Zimmermann
Stimulated Photoluminescence
Part of the Lecture Notes in Physics book series (LNP, volume 57)


Electron-hole-plasmas in direct gap semiconductors show up in an emission band the shape of which is always influenced by stimulation or even gain saturation. Model calculations of rate equations in two different simplified cases — non-thermal or non-uniform distributions — are compared with qualitative experimental features. While saturation of the maximum emission with excitation and red shift with spot length can be understood from the competition of cool down of carriers with pump-down by stimulation, other features need further refinement.


High Excitation Photon Density Carrier Distribution Excited Region Spontaneous Recombination 
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Copyright information

© Springer-Verlag 1976

Authors and Affiliations

  • G. O. Müller
    • 1
  • M. Rösler
    • 1
  • H. H. Weber
    • 1
  • R. Zimmermann
    • 1
  1. 1.Zentralinstitut für Elektronenphysik der Akademie der Wissenschaften der DDRBerlin

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