Solar Cells
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Title: Solar Cells

Essay Details:

Subject: Miscellaneous
Author: Fernando C
Date: February 2, 2017
Level: University
Grade: A
Length: 4 / 1199

Essay text:

It is no wonder that one marvels on how such a device would function. To understand how a solar cell works, it is necessary to go back to some basic atomic concepts. In the simplest model of the atom, electrons orbit a central nucleus, composed of protons and neutrons. each electron carries one negative charge and each proton one positive charge. Neutrons carry no charge. Every atom has the same number of electrons as there are protons, so, on the whole, it is electrically neutral. The electrons have discrete kinetic energy levels, which increase with the orbital radius. When atoms bond together to form a solid, the electron energy levels merge into bands...

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