The geometry problem for photocarrier drift mobilities in a-Si:H

M. A. Parker, E. A. Schiff

Research output: Contribution to journalArticlepeer-review

8 Scopus citations


Experiments sensitive to the anisotropy of electrical transport in amorphous hydrogenated silicon (a-Si:H) are reviewed. While steady-state conductance measurements are ambiguous, photocurrent transient experiments present a "geometry problem;" orders of magnitude separate mobility-lifetime product estimates measured parallel and perpendicular to the growth axis. An experiment is proposed to ascertain whether this difference is due to microscopically anistropic photocarrier transport.

Original languageEnglish (US)
Pages (from-to)627-630
Number of pages4
JournalJournal of Non-Crystalline Solids
Issue numberPART 1
StatePublished - Dec 2 1987

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Ceramics and Composites
  • Condensed Matter Physics
  • Materials Chemistry


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