PH3254 – Physics For Electronics Engineering Syllabus
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.
UNIT 1
PART-A
❖ Crystal systems & Bravais lattices
❖ Use of Miller indices
❖ Unit cell / wafer flats & notches / pattern alignment
❖ Crystalline & noncrystalline
❖ Imperfections in crystals
PART-B
❖ Packing Fraction For SC / BC / FCC / diamond cubic / Nacl / ZnS structures
❖ Water surface orientation
UNIT 2
PART-A
❖ Tunneling / degenerate state
❖ Dia / para / ferromagnetic effect
❖ Electron bands in solids
❖ GMR device / tight binding approximation
❖ Density of energy state
PART-B
❖ Classical free electron theory & Derive / Merits & Demerits Electrical
conductivity / Thermal Conductivity
UNIT 3
PART-A
❖ Atomic Magnetic Moments / magnetic permeability / susceptibility
❖ Currie Temperature
❖ Hard & Soft magnetic materials
❖ Uses of Magnetic principles in computer data storage & its examplePART-B
❖ Carrier concentration intrinsic semiconductor
❖ N / P Type semiconductors
UNIT 4
PART-A
❖ excitonic state / Plasmonics /Optoelectronic devices
❖ charge injection & recombination
❖ emission / Electro optics / Optical absorption
PART-B
❖ Light Detectors(photo diode -PN diode)
❖ Optical processes in organic semiconductor device
❖ Laser diode / LED / OLED
UNIT 5
PART-A
❖ Application of Carbon nanotubes / Spintronic
❖ Quantum well laser / resistance / conductance
❖ Tunneling / Balistic Transport
PART-B
❖ Quantum structures / Confinement
❖ Single electron transistor
❖ Carbon nanotube