by Elanora Pemco
By the most prevalent bulk material used in the fabrication of solar cell is crystalline silicon. Solar cells are used to transform light energy into electric power. They are typically consists of a specific or several semiconductor materials, like crystalline silicon, gallium, cadmium telluride or copper indium diselenide.
Solar cells made up of crystalline silicon need that pure crystalline silicon with high crystal quality be utilized. Four bonding electrons are kept in the outer shell of a crystalline silicon atom. Two electrons from adjacent atoms in the crystal lattice must bond so as to form a solid electron formation. Crystalline silicon manages to get a noble gas configuration with eight outer electrons by creating stable bonds with 4 neighboring electrons. The electrons are provided with the means to move freely if they are divided with light or heat, which ends up making a hole in the crystal lattice. This method is known as intrinsic conductivity.
The process of intrinsic conductivity could not produce electricity, however. For the production of electricity, doping atoms (essentially impurities) are added into the crystal lattice of the crystalline silicon. These kinds of atoms usually possess an extra electron (such as phosphorous) or just one electron less (as is the case of boron), in their exterior shell, when compared to crystalline silicon. The phrase "negative doping" or "n-doping" is attributable to the method that uses phosphorous and the phrase "positive doping" or "p-doping" is used to describe the method that uses boron.
An electrical charge is generally carried in the method using n-doping, since the electron can move about automatically in the crystal lattice of the crystalline silicon. There is a missing bonding electron for every single bonding born atom in the crystal lattice in the p-doping procedure. This phenomenon permits the electrons from crystalline silicon atoms to fill in the gaps created by the missing bonding electrons, opening up a new hole elsewhere. Impurity conduction is the correct term employed to describe this method that is based on these doping atoms.
A positive-negative junction is formed when ever both positively and negatively doped semiconductor layers are combined. This coming together of crystalline silicon will allow superfluous electrons from the n-semiconductor to diffuse into the positive semiconductor layer and form an area known as the "space charge region". Negatively charged doping atoms remain in the p-region, while positively charged doping atoms lodge in the n-region of the transition. Contrasting the movement of the charge carriers, an electrical area is formed which forces diffusion to ultimately discontinue. This positive-negative semiconductor is what is commonly known as a solar cell. Photons are taken in by the electrons when light strikes the solar cell. Electron bonds are split up by this gust of energy. The electrons that are released are drawn through the electrical field in the n-region. The holes that develop have a tendency to migrate in the reverse direction into the p-region. This process is what turns sunlight into energy source and is known as the photovoltaic effect.
To find out about the <a href="http://www.crystallinesilicon.org">crystalline silicon</a> as well as <a href=" http://www.crystallinesilicon.org ">solar cells</a> and more visit us right away.
---------------------------------------------------
You are receiving this because you signed up for it on 2011-08-23 from IP
To fine-tune your selection of which articles to receive, just login here:
http://www.uniquearticlewizard.com/bloggers/
using your username:
To unsubscribe please use the following link:
http://www.uniquearticlewizard.com/unsubscribe.php?mail=kidloveme.huyen@blogger.com&code=b83952f8ca040e326c958cbc4b8fd96e
---------------------------------------------------
---------------------------------
New Unique Article!
Title: The Most Standard Bulk Material Utilized In The Construction Of Solar Cell
Author: Elanora Pemco
Email: elanorakelly@gmail.com
Keywords: crystalline silicon,solar cells,business,uncategorized,industrial,industrial and manufacturing,manufacturing
Word Count: 500
Category: Hobbies
---------------------------------
No comments:
Post a Comment