SOLD STATE PHYSICS AND SEMICONDUCTOR DEVICES
Group A
Solid state physics: Atomic structures and quantum mechanical concepts, chemical bonds, solid state structure, band structure, election and hole concept, intrinsic, extrinsic and compensated semiconductors, carrier concentration, lattice vibrations, mobilities and drift velocities, Fermi level, energy-band diagram.
Carrier transport mechanism: Scattering and drift of electrons and holes, diffusion mechanism, Hall effect, magneto-resistance, quasi-Fermi levels, generation, recombination and injection of carriers, Boltzman
transport equation and scattering rates, transient response, basic governing equations in semiconductor.
P-N junction theory: Physical description of P-N junction, depletion approximation, biasing, transition capacitance, varacter, junction breakdown, space charge effect and diffusion approximation, current-voltage characteristics and temperature dependence, tunneling current, small signal a.c. analysis.
Bipolar junction transistors: BJT action, derivation of current components and gain expressions, breakdown voltages. Ebers-Moll model, hybrid-pi equivalent circuit, frequency response of transistors, P-N diode, SCR.
Group B
Fundamentals on technology of semiconductor devices: Unit processes for semiconductor device fabrication, oxidation, diffusion, photolithography and
etching. film deposition, device isolation, integrated BJT fabrication processes.
Field effect transistors-JFET and MOSFET: Physical description and theory of JFET, static characteristics, small signal analysis, equivalent circuit, MOS structure,
MOS capacitance, flat-band threshold voltages, MOS static characteristics, small signal parameters and equivalent circuit, charge-sheet model, strong, moderate and weak inversion, short-channel effects, hot-carrier effects, scaling laws of MOS transistors, LDD MOSFET, NMOS and CMOS IC technology, CMOS latch-up phenomenon.
Metal semiconductor junctions: Ideal Schottky barrier. current-voltage characteristics, MIS diode, Ohmic contacts, hetrojunctions, MESFET.
Photonic devices: Optical absorption in a semiconductor, photovoltaic effect, solar cell, photoconductors, PIN photodiode, avalanche photodiode,
LED, semiconductor lasers.
Recommended Rooks
• Y S Yang. Microelectronic Devices. Tala McGraw-Hili
Publishing Co. Ltd., New Delhi.
• M Shur. Physics of Semiconductor Devices. Prentice-Hall
of India (P) Ltd., New Delhi.
• S M Su. Physics of Semiconductor Devices. New Age
International (P) Ltd., New Delhi.
• B G Streetman. Solid State Electronic Devices. Prentice-
Hall of India (P) Ltd., New Delhi.