Aim of this course is to provide students with advanced knowledge of Physics of semiconductor materials and superconducting materials and some devices based on them.
Lectures (LIM slides available).
Visit to research labs at DFA.
Semiconductor structure and general properties - Bandgap formation - Energy band structure – Metals, insulators and semiconductors
Density of states and effective mass - Electons and Holes
Intrinsic semiconductor statistics - Mass action law - Acceptor and donors - Charge neutrality
Doped semiconductor statistics - Doping compensation - Thermal dependance of carrier density
Conductance, scattering, mobility and thermal dependance - Einstein relation
Generation and recombination processes - Band-to-band recombination - Shockley, Read & Hall recombination - Experimental determination of carrier density and their mobility - Haynes Shockley experience
Free carrier absorption - Direct optical transition
Indirect optical absorption - Excitons - Light emission – Binary, ternary and quaternary semiconductors - Optical properties of heterostuctures and nanostructures
Schottky diode
Metal/oxide/semicondutors systems - MOS capacitance - Flat band voltage
pn junction at equilibrium: band bending, depletion region, internal electric field
pn junction out of equilibrium: direct and inverse polarization, minority charge carriers injection and extraction, Shockley law: IV curve
pn junction: quasi Fermi level, CV curve, jnuction breakdown, transient behavior
Metal-oxide-semiconductor field-effect transistor (MOSFET) - Light and gas sensors
Doping technique - Ion implantation
Lithography - thermal diffusion
Moore Law - RIE (reactive ion etching), clean room, deionized water - Volatile and non volatile memories
Power devices
Electrochemical cells - Electrodes - Faraday law - reaction kinetics
Electrodeposition - Nernst-Einstein law - EIS (electrochemical impedance spectroscopy)
Ciclic and transient voltammetry
B. Sapoval, C. Hermann - Physics of Semiconductors - Springer-Verlag
S.M. Sze - Physics of Semiconductor Devices (3rd edition) - Wiley
L. Colombo - Fisica dei semiconduttori - Zanichelli
K. B. Oldham, J. C. Myland - Fundamentals of Electrochemical Science - Academic Press