16 Questions
What is the band of orbitals that accepts the electrons from the valence band called?
Conduction Band
What did Michael Faraday discover about electrical resistivity in 1833?
It decreases as temperature increases in silver sulfide
What is the highest occupied energy band called?
Valence Band
Where do most electrons remain bound to the atoms?
Valence Band
In a conductor, can electrons move freely among the orbitals within an energy band?
Yes, because the energy gap is relatively large
What type of material has a full valence band and an intermediate energy gap?
Semiconductor
What is the effect of P-type doping on silicon?
It creates the effect of a positive charge
Which element is used for P-type doping?
Gallium
What is the main function of a p-n junction?
To control the behavior of the diode
What happens when a p-n junction is formed?
Electrons from the n-type region diffuse across the junction and combine with holes
What type of charge do holes have in P-type silicon?
Positive
What does N-type doping result in?
An abundance of free electrons
What happens to the fifth electron in N-type doping?
It's free to move around the lattice
What is created when a hole is filled in a p-n junction?
+1 charge ion
What is the main role of the depletion region?
To control diode behavior
What happens at any temperature above absolute zero temperature in intrinsic silicon?
An electron in the lattice will be knocked loose from its position
Learn about semiconductors, microprocessors, and the range of conductivity. Explore the history of semiconductor discovery, including Michael Faraday's research on resistance in silver sulfide. Analyze data on the conductivity of metals versus semiconductors at different temperatures.
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