SUNLIGHT-THE RENEWABLE ENERGY AND IT'S APPLICATIONS

RENEWABLE ENERGY:-   It is the energy which comes from natural resources

            

 ## Sunlight is one of the renewable energy

 ## In general,sunlight contains all the frequency spectrum of electromagnetic radiation  but  Earth's  atmosphere filters certain components and as a result we get visible light,infrared and ultraviolet radiation

    SOLAR CELLS  WHICH CONVERTS  SUNLIGHT TO ELECTRICITY

## The key feature of solar cell is p-n junction principle

## The photo voltaic effect is the basic physical process by which a solar cell converts the sunlight to electricity

## The photo voltaic effect can be explained by considering the particle nature of light 

## Sunlight contains photons or packets of energy sufficient to create hole-electron pairs in n and p regions

## Electrons accumulate in n-region and holes accumulate in p-region,producing potential difference i.e.,voltage across junction and when an external load(user equipment such as battery...) is connected across the terminals,current flow through the load where the power is disippated in any another form