PH3254 Syllabus Physics for Electronics Engineering
PH3254 Syllabus Physics for Electronics Engineering Regulation 2021 Anna University free download. Physics for Electronics Engineering Syllabus PH3254 pdf download free.
UNIT I CRYSTALLOGRAPHY
Crystal structures: Crystal lattice – basis – unit cell and lattice parameters – crystal systems and Bravais lattices – Structure and packing fractions of SC, BCC, FCC, diamond cubic, NaCL, ZnS
structures – crystal planes, directions and Miller indices – distance between successive planes – linear and planar densities – crystalline and noncrystalline materials –Example use of Miller indices: wafer surface orientation – wafer flats and notches – pattern alignment – imperfections in crystals.
UNIT II ELECTRICAL AND MAGNETIC PROPERTIES OF MATERIALS
Classical free electron theory – Expression for electrical conductivity – Thermal conductivity,
expression – Quantum free electron theory :Tunneling – degenerate states – Fermi- Dirac statistics
– Density of energy states – Electron in periodic potential – Energy bands in solids – tight binding
approximation – Electron effective mass – concept of hole. Magnetic materials: Dia, para and
ferromagnetic effects – paramagnetism in the conduction electrons in metals – exchange
interaction and ferromagnetism – quantum interference devices – GMR devices.
UNIT III SEMICONDUCTORS AND TRANSPORT PHYSICS
Intrinsic Semiconductors – Energy band diagram – direct and indirect band gap semiconductors –
Carrier concentration in intrinsic semiconductors – extrinsic semiconductors – Carrier
concentration in N-type & P-type semiconductors – Variation of carrier concentration with
temperature – Carrier transport in Semiconductors: Drift, mobility and diffusion – Hall effect and
devices – Ohmic contacts – Schottky diode.
UNIT IV OPTICAL PROPERTIES OF MATERIALS
Classification of optical materials – Optical processes in semiconductors: optical absorption and
emission, charge injection and recombination, optical absorption, loss and gain. Optical processes
in quantum wells – Optoelectronic devices: light detectors and solar cells – light emitting diode –
laser diode – optical processes in organic semiconductor devices –excitonic state – Electro-optics
and nonlinear optics: Modulators and switching devices – plasmonics.
UNIT V NANO DEVICES
Density of states for solids – Significance between Fermi energy and volume of the material –
Quantum confinement – Quantum structures – Density of states for quantum wells, wires and dots
– Band gap of nanomaterials –Tunneling – Single electron phenomena – Single electron
Transistor. Conductivity of metallic nanowires – Ballistic transport – Quantum resistance and
conductance – Carbon nanotubes: Properties and applications – Spintronic devices and
applications – Optics in quantum structures – quantum well laser.
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