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UNIT I ELECTRICAL PROPERTIES OF MATERIALS

1.1 Classical free electron theory,Expression for Electrical conductivity, Thermal conductivity expression,Wiedemann-Franz law, Success and failures - Electrons in metals

1.2 Particle in a three dimensional box - Degenerate states,Fermi - Dirac statistics,Density of energy states, Electron in periodic potential: Bloch theorem

1.3 Metals and insulators, Energy bands in solids, Tight binding approximation, Electron effective mass - concept of hole

UNIT II SEMICONDUCTOR PHYSICS

2.1 Intrinsic Semiconductors - Energy band diagram

2.2 Direct and indirect semiconductors,Carrier concentration in intrinsic semiconductors

2.3 Extrinsic semiconductors-Carrier concentration in N-type & P-type semiconductors,Carrier transport: Velocity-electric field relations,Drift and diffusion transport

2.4 Einstein’s relation,Hall effect and devices, Zener and avalanche breakdown in p-n junctions,Ohmic contacts

2.5 Tunnel diode

2.6 Schotty diode

2.7 MOS capacitor - Power transistor

UNIT III MAGNETIC AND DIELECTRIC PROPERTIES OF MATERIALS

3.1 Magnetism in materials-Magnetic field and induction - magnetization - magnetic permeability and susceptibility, Types of magnetic materials,Microscopic classification of magnetic materials

3.2 Ferromagnetism: Origin and exchange interaction, Saturation magnetization and Curie temperature, Domain Theory, Dielectric materials: Polarization processes, Dielectric loss

3.3 Internal field,Clausius-Mosotti relation, Dielectric breakdown,High-k dielectrics

UNIT IV OPTICAL PROPERTIES OF MATERIALS

4.1 Classification of optical materials - Carrier generation and recombination processes - Absorption emission and scattering of light in metals, Insulators and Semiconductors (concepts only)

4.2 Photo current in a P- N diode, Solar cell, Photo detectors

4.3 LED - Organic LED - Laser diodes - excitons - Quantum confined Stark effect - quantum dot laser

UNIT V NANOELECTRONIC DEVICES

5.1 Introduction - Electron density in bulk material,Size dependence of Fermi energy,Quantum confinement,Quantum structures

5.2 Density of states in quantum well, quantum wire and quantum dot structures, Zener-Bloch oscillations, Resonant tunneling

5.3 Quantum interference effects - Mesoscopic structures: conductance fluctuations and coherent transport,Coulomb blockade effects

5.4 Single electron phenomena and Single electron Transistor,Magnetic semiconductors and Spintronics, Carbon nanotubes: Properties and applications