PV Cells:
PV cells can produce electricity without direct sunlight. They only need some light to produce an electric current (Bond, 2000).
The efficiency of a PV cell is based on the percentage of solar energy that a cell converts into electricity (Fies, 2001).
In PV devices, light energy interacts directly with the electrons of a semi-conductor to produce an electric current (Craig et. al., 2001).
A variety of materials are used to construct these PV or solar cells, the most common is silicon (Craig et. al., 2001).