Photovoltaic Conversion
Uses sheets of special materials to make electricity from the sun. "Photo-" means "light," and "voltaic" means "producing electricity."
A “cell” is a device that produces electricity. An example of an electrical cell is a flashlight battery. Photovoltaic cells produce electricity when they are exposed to light. They usually consist of panels. The panels contain two layers of different materials.

Photovoltaic Cells
References :
Depends, are we talking silicon based, synthetic dssc or biological dssc?
References :
Photovoltaic Conversion
Uses sheets of special materials to make electricity from the sun. "Photo-" means "light," and "voltaic" means "producing electricity."
A “cell” is a device that produces electricity. An example of an electrical cell is a flashlight battery. Photovoltaic cells produce electricity when they are exposed to light. They usually consist of panels. The panels contain two layers of different materials.
References :
http://how-solar-energy-works.blogspot.com/2010/04/how-solar-energy-works.html