What is the meaning of photo voltaic (PV) ?
“Photovoltaic” has two parts: photo, derived from the Greek word for light, and volt, relating to electricity pioneer Alessandro Volta. So, it gives the meaning of solar light power as an input and electricity as an output.

Photovoltaic Cells
Photovoltaic (PV) cells, or solar cells, use the photoelectric effect to produce electricity. PV cells are the building blocks of all PV systems since they are the devices that convert sunlight to electricity.

Components used in Solar PV system.