solar cell

Question

Solar cell differs from photodiode mainly because it:

RankGuru · Accepted Answer

A solar cell (photovoltaic cell) is essentially a p-n junction that converts light energy directly into electrical energy.
- Use of **no external battery**: Unlike a photodiode, which needs a battery to function, a solar cell **generates its own voltage** (Electromotive Force, EMF).
- When light hits the junction, carriers are generated and separated by the built-in field. This creates a potential difference across the terminals, allowing it to drive current through an external load. It effectively acts as a power source.

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solar cell

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