February 23, 2017

Homework Help: chemistry

Posted by School girl on Friday, December 14, 2012 at 1:22pm.

Chemical analysis of a silicon crystal reveals gallium at a level of 3.091*10^-7 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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