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Motion of electron-hole drops in ge at low exciton densities

  • Electron-hole Drops
  • Conference paper
  • First Online:
Physics of Highly Excited States in Solids

Part of the book series: Lecture Notes in Physics ((LNP,volume 57))

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Abstract

The expansion of the electron-hole drop (EHD) cloud after a short and local excitation by a pulsed dye laser is investigated by EHD detection in a metal-semiconductor contact. In regions with low free exciton (FE) densities a free flight of the drops is observed, suggesting a collision time of EHD τc ≥ 25μsec. It is proposed that the EHD are ejected out of the excitation region by a strong FE density gradient. Velocities in the range 200 – 2000 cm/s are observed independently of an applied electric field, indicating the EHD to be essentially uncharged.

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Authors and Affiliations

  1. Institute of Physics, Odense University, DK-5000, Odense, Denmark

    J. M. Hvam

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  1. J. M. Hvam
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© 1976 Springer-Verlag

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Hvam, J.M. (1976). Motion of electron-hole drops in ge at low exciton densities. In: Physics of Highly Excited States in Solids. Lecture Notes in Physics, vol 57. Springer, Berlin, Heidelberg. https://doi.org/10.1007/3-540-07991-2_95

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  • DOI: https://doi.org/10.1007/3-540-07991-2_95

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  • Publisher Name: Springer, Berlin, Heidelberg

  • Print ISBN: 978-3-540-07991-0

  • Online ISBN: 978-3-540-37975-1

  • eBook Packages: Springer Book Archive

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