I assume you mean "Photovoltaic cell." If so, here they are:
Advantages: No environmental impact and is a renewable energy source.
Disadvantages: Currently very expensive, very innefficient (only collects 30% of the potential energy), and unreliable (if a cloud covers the sun, no more energy is being collected).
Also, remember, I am just a random person on the internet stating my views, so be sure to check out all of my information, making sure that it is correct, before using it in a paper or something :-)
- ElectroGoofy