Hi Ms. Lu

Solar cells in solar panels capture energy from sunlight by collecting electrons accumulated from atoms that emit electrons. In this situation, the sun emits photons as usual, and the atoms, silicon, absorb the photons. The type wavelength of the electromagnetic radiation needed for the solar panels can range from ultraviolet to infrared radiation depending on the type of solar panels. These atoms emit electrons because the sunlit rays bombard the atoms with photons and these photons knock the electrons out of the electron clouds or the shells. The main ingredient in solar cells is silicon. How electricity is harvested from solar panels are by collecting the electrons emitted from the atoms and sending them through wires as a current. We receive more or less electricity from solar panels when there are more sunlight because the more sunlight that hits the silicon, the more electrons that will be knocked out and the less sunlight there is, the less photons there will be to knock the electrons from the atoms. Eventually, the silicon will degrade and will be less efficient. The number of silicon that are in the excited state decrease as time goes on. 

Hi Ms Lu. I put this on the internet to see if I get in trouble for this