Explain the working of solar cell.

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terabaaphoonmein

Joined Jul 19, 2020
111
It has been 5 years since I studied physics. And my physics basics are rusty. I feel like I am understanding but in fact I am not..

I will explain what I understand (my half baked information that I collected from various sources).

N type is thin.
P type is thick.

When n and p are connected, pn junction is formed. Some electrons migrate from n to p and some holes migrate from p to n.
So a depletion region is formed. Depletion region has no free charge.
(Are pn junction and depletion region same?)

Incident sunlight breaks the electron hole bond pair then free electrons go to n side and free holes go to p side (that is the original arrangement, then what did we gain??)

Please explain in short brief to me.
 
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