In Vacuo Photocurrent Measurements of Plasma Polymerized Styrene Films.

Abstract

Photoconductivity measurements were carried out on plasma polymerized styrene (PPS) in vacuo, in air and in subsequently re-evacuated conditions. Samples with two gold electrodes (Au-PPS-Au) and gold-aluminum electrodes (Au-PPS-Al) were used. Positive short circuit photocurrents were observed in both types of specimens. In the case of Au-PPS-Au, photocurrent threshold was about 1.6 ev in vacuo for the virgin film, which is attributed to the energy of hole excitation in bulk. Residual free radicals were assumed to be the acceptors in this mechanism. In the case of Au-PPS-Al, electron injection from aluminum was thought to be a more likely mechanism, with an estimated barrier height of approximately 2.6 Ev. (Author)

Document Details

Document Type
Technical Report
Publication Date
Aug 01, 1976
Accession Number
ADA028248

Entities

People

  • M. Ieda
  • Meikun Shen
  • S. Morita

Organizations

  • University of California, Berkeley

Tags

DTIC Thesaurus Topics

  • Aluminum
  • Circuits
  • Electrodes
  • Electrons
  • Excitation
  • Free Radicals
  • Measurement
  • Photoconductivity
  • Residuals
  • Short Circuits

Readers

  • Materials Science and Engineering.
  • Polymer Science and Engineering.
  • Thin Film Deposition Science.

Technology Areas

  • Microelectronics