Semiconductor Manufacturing Tour
Table of Contents
Slide 4 of 22
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Crystalline or contaminate defects will kill the operation of an IC, so it is imperative that the silicon is ultra-pure. In order to create the best possible quality of silicon, a pure layer of silicon is grown on the raw wafer via an epitaxial growth process. This is known as the epi-layer.
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This layer is very thin - approximately 3 percent or less of the wafer thickness. As device complexity grows, the need for epi-wafers increases.
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