Class 4, ground floor, ground floor, called p-type silicon, if building is like a layer or layers of soil, which lies on the Groud bottom of cell layers, layers of P is a semiconductor that has put the compounds boron. Boron, to control, electrical conductivity, are intended to make the structure of the atom the electron loss caused a hole in the floor (in the hole). When cell layer on the receiving energy from the Sun. Enough energy to this class. This class acts as a receptor of electrons If that still does not have a layer of Sun n-type silicon, which is located on the top of the cell is ready to provide the electrons, but it also has (Hostel) is one of the few in this layer. Class p-type silicon, which is located on the bottom or back side of the cell is called it has a structure mainly (hole), but there is still little confused electrons. Class 5, the bottom layer is called the Back Electrode layer if it is building an underground floor of backpacks at the back of p-type Silicon metal bars called Back Electrode acts as a collecting hole.
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