Transient photocurrent characterization of amorphous semiconductors

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Abstract

Transient photocurrent techniques for the characterization of amorphous semiconductors are reviewed; the techniques are based on the assumption that the photocarrier dynamics have the multiple-trapping form. The application of these techniques to five properties of defects in amorphous hydrogenated silicon (a-Si:H) are reviewed. The five properties are: the attempt-to-escape frequency, the photocarrier diffusion length, the total trap density, the capture coefficient-diffusion constant ratio, and the density of states. A discussion of the role of time-of-flight determinations in transient photocurrent characterization is given.

Original languageEnglish (US)
Pages (from-to)39-46
Number of pages8
JournalProceedings of SPIE - The International Society for Optical Engineering
Volume763
DOIs
StatePublished - Aug 21 1987

ASJC Scopus subject areas

  • Applied Mathematics
  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Electrical and Electronic Engineering
  • Computer Science Applications

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