IBM is using a process that removes transistor patterns embedded in them. The patterns usually prevent silicon wafers from being reused along with other silicon products because they represent closely guarded intellectual property.

As a result, the tech industry discards about three million silicon wafers per year, IBM estimated.

With the patterns removed, IBM can safely sell its used silicon wafers from its Burlington, Vt., plant to manufacturers that can turn them into solar cells or panels. IBM said it's also implementing the process at a plant in East Fishkill, N.Y.

The program benefits the environment in two ways - less waste is ending up in landfills, and the redirected silicon is helping to alleviate a materials shortage that is constraining the use of energy-saving solar cells.

By: DocMemory
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