Abstract
The photoelectric effect is the emission of electrons from metals under the action of light. In 1921, Einstein won the Nobel Prize for explaining the photoelectric effect, which says that light has nature of particulate or light extends in quanta called photons. More photons eject more electrons, but the energy of the ejected electrons can only increase if the photon's energy rises. The photovoltaic effect and photoelectric effect are not the same concept. These are two directly related terms but the difference is that the photoelectric effect releases electrons from the surface of the material, after exposure to a sufficient amount of energy from sunlight. The photovoltaic effect releases electrons pass between molecules of different material compounds, which causes an increase in voltage between the two electrodes. This discovery is the basis for the development of electricity generation from solar energy. Further development and achievement are given further in the work.
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