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July 26, 2014

Homework Help: chemistry

Posted by student on Friday, December 14, 2012 at 1:33pm.

Chemical analysis of a silicon crystal reveals gallium at a level of 3.091×10−8 atomic percent. Assuming that the concentration of thermally excited charge carriers from the Si matrix is negligible, what is the density of free charge carriers (free carriers/cm3) in this Si crystal?

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