In my childhood I saw many of windmill near to my household. I ask to my dad what's this? He explain its one of the energy resource helps to produces electricity and also without pollute environment. So I ask what are the other resource like the same? He point out sun this is the major source to produces energy without any harm hazardous. I continue my question how we use? Because sun is so hot we could nt reach it was sit in so long height how? Next day my father brought on single module solar panel with lamp to explain mine. How solar cell works? That's my first Inspiration towards solar cell