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

M. A. Parker; E. A. Schiff

doi:10.1016/0022-3093(87)90147-5

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

M. A. Parker, E. A. Schiff

Department of Physics

Research output: Contribution to journal › Article › peer-review

8 Scopus citations

Abstract

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 language	English (US)
Pages (from-to)	627-630
Number of pages	4
Journal	Journal of Non-Crystalline Solids
Volume	97-98
Issue number	PART 1
DOIs	https://doi.org/10.1016/0022-3093(87)90147-5
State	Published - Dec 2 1987

ASJC Scopus subject areas

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

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10.1016/0022-3093(87)90147-5

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abstract = "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.",

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N2 - 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.

AB - 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.

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

Abstract

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