Thickness-dependent conductivity and photoconductivity of hydrogenated amorphous silicon

  • Brodsky M
  • Evangelisti F
  • Fischer R
 et al. 
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Abstract

We summarize our recent results on thickness and surface variations in the conductivity and photoconductivity of phosphorus-doped n-type hydrogenated amorphous silicon films. Our principal finding is that thinner films have lower conductivities, higher activation energies and, for a certain range of thicknesses, higher photoconductivities. A speculation is given for the origin of the enhanced photoconductivity in terms of field-assisted carrier separation in the surface barrier region. © 1980.

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Authors

  • M. H. Brodsky

  • F. Evangelisti

  • R. Fischer

  • R. W. Johnson

  • W. Reuter

  • I. Solomon

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