n and p Various combinations of the n and p semiconductors are used for making various electronic components. A diode is a combination of n and p types semiconductors are used for making various electronic components. n type and p type semiconductors The sandwich semiconductors of the type npn or pnp are used to detect/amplify the audio signals. These are used to make transistors. The solar cell is an efficient photo-diode. n-type This is used for converting light energy into electrical energy.n and p Several interesting semiconductors materials have been prepared by combining the elements of Groups 13 and 15, or Groups 12 and 16.
These combinations simulate the average valence of four as in the Group 14 semiconducting elements such as Si and Ge.n type semiconductor Group 13 and 15 materials: InSb, AIP, GaAs.Gallium arsenide (Ga As) is a very fast response semiconductor p type semiconductor Group 12 and a6 materials: ZnS, Cds, Cdse, HgTe.In these compounds, bonds are polar covalent bonds in which the extent of ionic character depends upon the electro negativities of the two elements.
Metals show electronic conductivity. The conductivity of semiconductors and insulators is mainly governed by the impurities and hence defects ntype. n and p Certain substances conduct electricity due to movement of electrons as well as ions.extrinsic semiconductor Certain metal oxides and sulphides show a change-over from the metal to insulator behaviour at a certain temperature .The conducting behaviour of transition metal oxides shows a wide variation. Conducting characteristics of some some oxides are given alongside.The oxide ReO3 is like metallic copper in it’s conductivity and appearance.
Magnetic Properties: The magnetic properties of materials are due to the magnetic moments of the electrons present in it. The magnetism associated with an electron originates from its orbital motion and spin motion. Thus, each electron in an atom can be considered to be a small magnet having permanent orbital and spin magnetic moments. The fundamental unit of magnetic moment is called Bohr Magnetron.
Based on the behaviour of substances when placed in the magnetic field .