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In this video I describe how to change the electron or hole concentration: through doping with non-silicon atoms. This allows charge neutrality to be maintained and can change the relative amounts of holes and electrons via a simple chemical rate law.

This is part of my series on semiconductor physics (often called Electronics 1 at university). This is based on the book Semiconductor Physics and Devices by Donald Neamen, as well as the EECS 170A/174 courses taught at UC Irvine.

Hope you found this video helpful, please post in the comments below anything I can do to improve future videos, or suggestions you have for future videos.