Question

What is solar cell? Why and how is a solar cell application and panel prepared? list two limitations of these panels.

Answer 1

SOLAR CELL :
solar cell is also called "solar photovoltaic cell".which convert the solar or light energy into electrical energy. It is a small sensitive semiconductor junction.
APPLICATION AND PREPARING OF SOLAR CELL :
silicon is used in preparing the solar cell because it converts solar energy into electric energy. Gallium and Selenium are also used to make solar cell. A group of solar cells arranged in definite pattern is called "solar pannel".
LIMITATION :
(i) It is very costly.
(ii) Weather dependent.
(iii) All interior needs in our home.

Answer 2

SOLAR CELL :• Solar cells convert solar energy into electricity.• A solar cell develops a voltage of 0.5-1 V and can produce about 0.7 W of electricity.• A large number of solar cell are combined in an arrangement called solarcell panelAdvantages :(a) Have no moving parts.(b) Require little maintenance.(c) Can work without any focusing device.(d) Can be set up in remote and inacessible areas.Disadvantages :(a) Manufacturing is expensive.(b) Availability of special grade silicon for making solar cells is limited.(c) Silver wire for interconnection of cells is expensive.Uses of Solar Cell :(a) Artificial satellites and space probes use solar cells as the main source of energy.(b) Radio, TV relay stations in remote locations use solar cell panels.(c) Traffic signals, calculators and many toys are fitted with solar cells.