Mahatma Gandhi University (MGU) 2007 B.Tech Electronic Instrumentation & Control Engineering solid state devices - Question Paper

ELECTRONICS AND INSTRUMENTATION
THIRD SEMESTER
SOLID STATE DEVICES

MODULE 1
Energy bands and charge carriers in semiconductors, energy bands- metals –semiconductors and insulators ,direct and indirect semiconductors –charge carriers in semiconductors-electrons and holes-intrinsic and extrinsic material –n material and p- material-carrier concentration: Fermi level –Epps-temperature dependence –conductivity and mobility-drift and resistance effect of temperature and doping on mobility –hall effect

MODULE 2
Diffusion of carriers-derivation of diffusion constant D-Einstein relation –continuity formula –p .n junction: contact potential- equilibrium Fermi levels-space charge at junctions-current components at a junction: majority and minority carrier currents –zanier and avalanche break down –capacitance of p-n junctions

MODULE 3
P-n junction diodes: volt ampere characteristics-switching time –rectifier action –zanier diodes: volt ampere characteristics: tunnel diodes: tunneling phenomena- volt ampere characteristics-varactor diodes-photo diodes- photo diodes: detection principle –light emitting diodes

MODULE 4
Bipolar junction transistors: n p n and p n p transistor action –open circuit transistor-biasing in active region –majority and minority carrier distribution-terminal currents –amplification and switching-current amplification factors- emitter –efficiency-Scotty transistors –photo transistors

MODULE 5
Field effect transistors: operation –pinch off and saturation –pinch off voltage –gate control- volt –ampere characteristics- MOSFETS: n MOS and p MOS: comparison –enhancement and depletion types-control of threshold voltage- MOS capacitance

REFERENCE

1. SOLID STATE ELECTRONIC DEVICES BEN G STREETMAN-
2. MICROELECTRONIC DEVICES NAGCHAUDHARI
3. INTEGRATED ELECTRONICS MILLMAN AND HALKIAS
4. PHYSICS OF SEMICONDUCTOR DEVICES S M SZE
5. SEMICONDUCTOR DEVICES NAGCHOUDHARY
6. THEORY OF SEMICONDUCTOR DEVICES KARL HESS

Earning:   Approval pending.