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0 votes
1 answer
265 views

Why do diodes block current in a single direction?

It seems like all the explanations for diode mechanics simply state that if N-type semiconductor is connected to V+ of the battery, the depletion region grows so current cannot pass. It seems, ...
curiousgeorge's user avatar
2 votes
1 answer
983 views

Confusion regarding Hall effect in semiconductors

In many places, it's mentioned that in hall effect, the holes move under the influence of magnetic field in the direction as shown in the figure. In this figure itself, the bound electrons move in the ...
Rohan 's user avatar
  • 31
3 votes
1 answer
335 views

Theory of Space Charge in a Planar Diode

A planar diode in a vacuum bulb can support current in only one direction. To even get current flowing, you have to heat up the cathode filament to excite the electrons. However, once current is ...
commando's user avatar
  • 143