Physics has always been regarded as a fascinating subject by aspiring engineering students. This title covers the complete syllabus the subject in Gujarat Technological University. The basic concepts and derivations that are presented in this book are in a simple and lucid manner so that students do not find any difficulty in understating the content presented. In each module, the topics and their subtopics are logically arranged and elaborately discussed. In order to make the book more beneficial to the students, several solved examples are included in each module. At the end of each module several unsolved examples, short and long questions are included. 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. 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 – 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
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