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A Comparison of Surface Passivation Techniques for Measurement of Minority Carrier Lifetime in Thin Si Wafers: Toward a Stable and Uniform Passivation
Published online by Cambridge University Press: 17 June 2014
Abstract
We describe appropriate wafer cleaning procedure and surface passivation characteristics of various passivants used for making measurement of minority carrier lifetime (τB ) of very high quality Si wafers. These passivants include: iodine ethanol (I-E), quinhydrone methanol (QH-M), SiO2, and Al2O3. The issues related to the passivation stability and the spatial uniformity for mapping τB are also discussed.
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- Copyright © Materials Research Society 2014
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