Class 12 physics semiconductor electronics revision notes pdf
chapter 14 class 12 physics best revision notes PDF
Youtube video- watch video
PDF Link-download pdf notes
topics covered---- what is electronic devices and electricity classification of solid on the basis of conductivity classification of solid on the basis of energy band conductor, insulator , semi-conductor types of semiconductor on the basis of state-- elementals. / compound on the basis of purity -- intrinsic / extrinsic semiconductor device on the basis of type of impurity added p- type semiconductor n- type semiconductor representation of p & n type semiconductor p-n junction , depletion region , depletion layer Barrie potential . class 12 Physics chapter 14 semiconductor electronics quick revision. chapter 14 revision
chapter 14 class 12 physics best revision notes PDF
Youtube video- watch video
PDF Link-download pdf notes
topics covered---- what is electronic devices and electricity classification of solid on the basis of conductivity classification of solid on the basis of energy band conductor, insulator , semi-conductor types of semiconductor on the basis of state-- elementals. / compound on the basis of purity -- intrinsic / extrinsic semiconductor device on the basis of type of impurity added p- type semiconductor n- type semiconductor representation of p & n type semiconductor p-n junction , depletion region , depletion layer Barrie potential . class 12 Physics chapter 14 semiconductor electronics quick revision. chapter 14 revision
Semiconductor materials are useful because their behavior can be easily manipulated by the addition of impurities, known as doping. Semiconductor conductivity can be controlled by the introduction of an electric or magnetic field, by exposure to light or heat, or by the mechanical deformation of a doped monocrystalline grid; thus, semiconductors can make excellent sensors. Current conduction in a semiconductor occurs via mobile or "free" electrons and holes, collectively known as charge carriers. Doping a semiconductor such as silicon with a small proportion of an atomic impurity, such as phosphorus or boron, greatly increases the number of free electrons or holes within the semiconductor. When a doped semiconductor contains excess holes it is called "p-type", and when it contains excess free electrons it is known as "n-type", where p (positive for holes) or n (negative for electrons) is the sign of the charge of the majority mobile charge carriers. The semiconductor material used in devices is doped under highly controlled conditions in a fabrication facility, or fab, to control precisely the location and concentration of p- and n-type dopants. The junctions which form where n-type and p-type semiconductors join together are called p–n junctions.
Comments
Post a Comment