P-N Junction

The most commonly known solar cell is configured as a large-area p-n junction made from silicon. In practice, p-n junctions of silicon solar cells are made by diffusing an n-type dopant into one side of a p-type wafer (or vice versa).Such an array is called a solar module. Solar cells are used to supply power to, Space
Applications, Rural Telephone Exchanges, Street Lighting, Mountain terrain mission control,
Remotely operated Robots, etc.,

bibliography:
http://www.wcubed.com/solar/What%20is%20a%20Solar%20Cell/light11.gif

(picture)

Qin Yan