067-E105 Semiconductors Crossword

Works like a switch while having no moving parts.
The electrons farthest away from the nucleus
Materials with conductivity that is better than insulators but poorer than conductors.
Element: Si
Element: Ge
Element: Ga
Element: As
Pure semiconductor material.
Adding impurity to semiconductor material
Like 22-across; 3 electrons on the outside.
Like 30-across; 5 electrons on the outside.
Where N and P meet.
A voltage wall that must be overcome to move forward.
A device like a one-way street for electrons.
Too much voltage in the wrong direction.
Cutoff circuits; hair trimmers; a basketball team
Circuit for AC to DC
It's a diode made to work in breakdown.
Not a needle, but a type of diode.
There's negative resistance inside this diode. No light at the end of it.
This device has seen the light.
This device shines. Not bad for three letters.
A doctor once asked for sharks equipped with these devices.
It's the T in "BJT"
When no current flows in a transistor, it's in this mode.
When too much current flows in a transistor, it's in this mode.
Gain, after Greek A.
When semiconductors can't handle the heat, they ______.
A small signal here on a BJT can have a big effect.
On a BJT, where the arrow is.
These are controlled by voltage, not current.
A whole family of triggers and switches.