Podcasts by How Semiconductors and Transistors Work

This podcast is drawn from the Virtual Lab presentations of WeCanFigureThisOut.org. The copyrighted material of this site was developed under funding from National Science Foundation CCLI, NIRT, MRSEC and NUE programs. This project is led by John C. Bean from 2021-01-31T22:10:42.023393

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All of the scenes together from 2021-01-31T22:10:42.023393

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First, let's make the nucleus of the atom from 2021-01-31T22:10:42.023393

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And six more from 2021-01-31T22:10:42.023393

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And finally the four bonding electrons from 2021-01-31T22:10:42.023393

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Move them farther apart from 2021-01-31T22:10:42.023393

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Make a 2nd atom and form a bond from 2021-01-31T22:10:42.023393

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Start to make a crystal from 2021-01-31T22:10:42.023393

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Take a look at its planes and facets from 2021-01-31T22:10:42.023393

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Make a bar of silicon crystal from 2021-01-31T22:10:42.023393

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Create a donor atom with 5 bonding electrons from 2021-01-31T22:10:42.023393

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Put it into the silicon crystal from 2021-01-31T22:10:42.023393

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The donor's electron starts to wander from 2021-01-31T22:10:42.023393

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More donors => a cloud of electrons from 2021-01-31T22:10:42.023393

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Put donor atoms into the other end of the bar from 2021-01-31T22:10:42.023393

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Does the bar conduct? Not yet! from 2021-01-31T22:10:42.023393

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But add metal plate just above the bar . . . from 2021-01-31T22:10:42.023393

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The positive plate draws in the electrons from 2021-01-31T22:10:42.023393

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Completing this MOS transistor from 2021-01-31T22:10:42.023393

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All of the scenes together from 2017-07-24T11:59

All of the scenes together from 2017-07-24T11:59