Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
79888 | Solar Energy Materials and Solar Cells | 2009 | 5 Pages |
Abstract
The surface recombination velocity is a critical parameter in silicon device applications including solar cells. In this work, we developed and applied a contactless optical/radio-frequency technique to provide quick, contactless measurement of the surface recombination velocity. The basic technique is to probe the excess carrier lifetime in the surface and bulk regions of a semiconductor wafer by varying the excitation wavelength. Here, we have derived a theoretical functional model that describes the experimental photoconductive transient. A curve fitting procedure provides a determination for both the bulk recombination lifetime and the surface recombination velocity.
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Authors
R.K. Ahrenkiel, S.W. Johnston,