How Semiconductors and Transistors Work
John C. Bean - WeCanFigureThisOut.orgThis podcast is drawn from the "Virtual Lab" of WeCanFigureThisOut.org. This Virtual Lab uses 3D virtual reality animations to explain electronics, microelectronics and nanotechnology. This podcast explains how semiconductors work and how they are made into the transistor switches that power modern integrated cirtuits.
Here is our do it yourself silicon atom kit
Jul 24, 2017 • 6s
First, let's make the nucleus of the atom
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Add the first two electrons
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And six more
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And finally the four bonding electrons
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Move them farther apart
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Make a 2nd atom and form a bond
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Start to make a crystal
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Take a look at its planes and facets
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Make a bar of silicon crystal
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Create a donor atom with 5 bonding electrons
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Put it into the silicon crystal
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The donor's electron starts to wander
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More donors => a cloud of electrons
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Put donor atoms into the other end of the bar
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Does the bar conduct? Not yet!
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But add metal plate just above the bar . . .
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The positive plate draws in the electrons
Jul 24, 2017 • 5s
Completing this MOS transistor
Jul 24, 2017 • 10s
All of the scenes together
Jul 24, 2017 • 2m
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