PYL102: Principles of Electronic Materials

Kaustuv Manna , Manisha Thakurathi 

Free electron models: Drude and Sommerfield’s model. Conductivity in metals and Concepts of Fermi level. 

Electrons in a Periodic Potential, Bloch theorem in lattice, Kronig-Penney model and Energy bands in solids. 

Classification of electronic materials: metals, semiconductors and insulators. Effective mass and holes. 

Intrinsic, extrinsic and degenerate semiconductors, Fermi level variation by carrier concentration and temperature. 

Metal-semiconductor junction, p-n junction, Diffusion and drift transport, carrier lifetime and diffusion length; Direct and indirect band gaps. 

Concept of phonons, Thermoelectricity, Optical transitions, photon absorption, Exciton, photovoltaic effect.

Dielectrics and electrical polarization, Depolarization field, Clausius-Mossotti relation; Electronic polarization and its mechanisms, Dielectric breakdown; Piezoelectricity, Pyroelectricity and Ferroelectricity. 

Magnetism in materials – types of interactions, Magnetic susceptibility, Curie and Neel temperatures; Domains, Magnetic anisotropies, Spin-orbit interaction, superconductivity.