Differences

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--- manufacture [2012/08/13 07:09] – [Designing the circuit] mcmaster
+++ manufacture [2012/08/13 07:12] – mcmaster
@@ Line 1: / Line 1: @@
 ====== Obtaining silicon ======
-Must be highly purified.  Most Si goes to the steel industry with <10% going to making wafers. [Wiki: Si]
+Most Si goes to the steel industry with <10% going to making wafers. [Wiki: Si]
+FIXME: what does Si ore look like?
 ====== Making ingots ======
-Melted in high temp furnace. A seed crystal is dropped in and forms a large crystal.  Chemicals are added to give p or n doping.
+Silicon must be highly purified for use in semiconductors.  Its melted in high temp furnace with several variations on how to purify it based on whether cost or purity (quality) is a higher concern.  Chemicals are added to give p or n doping.
+FIXME: steal a picture from Wiki or something