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Latest episodes of the podcast How Semiconductors and Transistors Work
Here is our do it yourself silicon atom kit
24/07/2017
First, let's make the nucleus of the atom
24/07/2017
Add the first two electrons
24/07/2017
And six more
24/07/2017
And finally the four bonding electrons
24/07/2017
Move them farther apart
24/07/2017
Make a 2nd atom and form a bond
24/07/2017
Start to make a crystal
24/07/2017
Take a look at its planes and facets
24/07/2017
Make a bar of silicon crystal
24/07/2017
Create a donor atom with 5 bonding electrons
24/07/2017
Put it into the silicon crystal
24/07/2017
The donor's electron starts to wander
24/07/2017
More donors => a cloud of electrons
24/07/2017
Does the bar conduct? Not yet!
24/07/2017
But add metal plate just above the bar . . .
24/07/2017
The positive plate draws in the electrons
24/07/2017
Completing this MOS transistor
24/07/2017
In God we trust