Doped Silicon:
This basic flash file I made illustrates how solar cells are made by adding tiny impurities of Gp III and GP V elements to silicon (GP IV element). [Use the keys at the bottom to navigate] The results in an electric field being formed across the p-n junction. Without the built-in electric field the free electrons and free holes created by light photons could not be separated to form a current. A solar cell is a type of large surface area diode.
Filed under: educational resources, Flash Education, Renewable Energy | Tagged: animation, carbon, doped, doping, education, element, energy, flash, junction, photon, photovoltaic, renewable, silicon, solar, solar cell, sunlight, sustainability, swf, zero emission | Leave a comment »