Solar panel is made up of large number of cells put together with the help of connecting wires in a definite pattern.
Solar panel is basically used to generate electricity using the solar energy. It produces more electrical power than one solar cell. It can be used to run electrical appliances, fans and lights or bulbs. solar panels are also used to collect energy in the day to light the street lights on the road at night.
The working principle of solar cell (solar panel) is the photovoltaic effect. When light of sufficient frequency fall on the cell, electron- hole pairs are generated. These electron-hole pairs are separated to their majority regions, due to the electric field of the depletion region. These carriers are collected by the contact terminals, giving rise to the photovoltage