Physics (Group II) (GTU)

Key Features:

·         Complete coverage of the new revised syllabus as per Gujarat Technological University.

·         Simple and lucid style of content presentation.

·         Large number of solved examples.

Module - I: ELECTRONIC MATERIALS

1.       Free electron theory

2.       Density of states and energy band diagrams

3.       Kronig-Penny model (to introduce origin of band gap), Energy bands in solids

4.       E-k diagram, Direct and indirect bandgaps

5.       Types of electronic materials: metals, semiconductors, and insulators

6.       Density of states, Occupation probability

7.       Fermi level, Effective mass, Phonons

Module - II: SEMICONDUCTORS

1.       Intrinsic and extrinsic semiconductors

2.       Dependence of Fermi level on carrier- concentration and temperature (equilibrium carrier statistics)

3.       Carrier generation and recombination, Carrier transport: diffusion and drift, p-n junction,

4.       Metal-semiconductor junction (Ohmic and Schottky), Semiconductor materials of interest for optoelectronic devices

Module -III LIGHT-SEMICONDUCTOR INTERACTION

1.       Optical transitions in bulk semiconductors: absorption, spontaneous emission, and stimulated emission

2.       Joint density of states

3.       Density of states for photons

4.       Transition rates (Fermi's golden rule)

5.       Optical loss and gain; Photovoltaic effect, Exciton

6.       Drude model

Module - IV: MEASUREMENTS

1.       Four-point probe and Van Der Pauw measurements for carrier density

2.       Resistivity and hall mobility

3.       Hot-point probe measurement, capacitance-voltage measurement

4.       Parameter extraction from diode I-V characteristics, DLTS

5.       Band gap by UV-Vis spectroscopy, absorption/transmission

Module - V: SUPERCONDUCTIVITY

1.       Introduction of Superconductivity

2.       Properties of superconductor

·         Effect of magnetic field

·         Meissner effect

·         Pressure effect

·         Impurity effect

·         Isotopic mass effect

3.       Mechanism of Superconductivity: BCS Theory

4.       Penetration depth: Magnetic field

5.       Josephson's junction and its application

6.       Application of superconductors