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Low Coherence Interferometry for Non-Invasive Semiconductor Monitoring
Published online by Cambridge University Press: 22 February 2011
Abstract
We report on the first use of optical low coherence reflectometry (OLCR) for Edge Defined Film-Fed Growth (EFG) silicon characterization. This OLCR sensor system has been used to measure horizontal profiles of silicon thickness and flatness to an accuracy of 1.5 Rim with the sensor head positioned 1 cm away from the silicon. The use of this noninvasive sensor for EFG silicon growth monitoring may lead to more efficient solar cell manufacturing processes.
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- Copyright © Materials Research Society 1994