Solar cells :<br /><br />Solar cells are a tool for converting solar or light energy, in other words, into energy<br />directly electrical, The idea of solar cells work is the photovoltaic effect, as there is a layer with negative doping, i.e. it has a large number of surplus electrons, and another with positive doping, i.e. a decrease in the number of electrons. When the light falls, the electrons start moving in the negative part and move to the positive part to replace the gaps until it runs in the electric circuit. Or she loses her excess energy and returns to her place<br /><br /><br />The solar cell is not placed alone. It is part of a system.<br /> It is the main and most important factor in it. <br />It collects a large number of solar cells together to form the model or unit. <br />The group of them is called the solar panel, then a group of panels is called the array, and a group of arrays is called the solar system.<br /><br /><br /><br /> <br /><br /><br />مسؤول المختبرات<br />م . عدنان حمزة حسن<br />