Youtor
INTRINSIC SEMICONDUCTOR
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For more information: • http://www.7activestudio.com • http://www.7activemedical.com • [email protected] • Contact: +91- 9700061777, • 040-64501777 / 65864777 • • 7 Active Technology Solutions Pvt.Ltd. is an educational 3D digital content provider for K-12. We also customise the content as per your requirement for companies platform providers colleges etc . 7 Active driving force The Joy of Happy Learning -- is what makes difference from other digital content providers. We consider Student needs, Lecturer needs and College needs in designing the 3D 2D Animated Video Lectures. We are carrying a huge 3D Digital Library ready to use. • • Intrinsic Semiconductor:Bonds in Semiconductors The atoms of every element are held together by the bonding action of valence electrons. This bonding is due to the fact that it is the tendency of each atom to complete its last orbit by acquiring 8 electrons in it. However, in most of the substances, the last orbit is complete. i.e. the last orbit does not have 8 electrons. This makes the atom active to enter into bargain with other the atoms acquire 8 electrons in the last orbit.To do so, the atom may lose, gain or share valance electrons with other atoms. In semiconductors, bonds are formed by sharing of valance electrons. Such bonds are called Co-Valeant bonds. In the formation of a covalent bond, each atom contributes equal numbers of valence electrons and the contributed electrons are shared by the atoms engaged in the formation of the bond.For example a germanium atom has 4 valance electrons. It is the tendency of each germanium atom to have 8 electrons in the last orbit. To do so, each germanium atom positions itself between 4 other germanium atoms as shown is the diagram each neighboring atom shares one valance electron with the central atom. In this business of sharing completes its last orbit by having 8 electrons revolving round the nucleus.In the way,the central atom setup Co-Valeant bonds.
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