• To develop the necessary understanding of semiconducting materials and their applications. • At the end of the course the students are familiar with various semiconducting materials and their applications Program Outcome a) an ability to apply knowledge of mathematics, science, and engineering Course Outcomes • The graduates will demonstrate knowledge of fundamentals, science and mathematics in solving problems logically Assessment Pattern S.No Test 1 ∗ Test 2 ∗ Model ∗ Examination Semester End Examination 1 Remember 20 20 20 20 2 Understand 20 20 20 20 3 Apply 25 25 25 25 4 Analyze 25 25 25 25 5 Evaluate 10 10 10 10 6 Create - - - - Total 100 100 100 100 Remember 1. What properties are desirable in semiconductors? 2. Explain the Kronig-Penny model. 3. Define drift current density. 4. What is meant by breakdown? 5. Explain the minority carrier distribution in p-n junction diode. 6. Define temperature effect. 7. What is the basic principle of bipolar junction transistor? 8. Define current crowding. 9. What are optoelectronic devices? 10. Describe the operation of a laser diode. 20. The remaining 10 marks will be calculated based on assignments. Accordingly internal assessment will be calculated for 50 marks.
Department of Electrical and Electronics Engineering, Bannari Amman Inst. of Tech. | Regulation 2011 366 Understand 1. How does conductivity of a semiconductor change with rise in its temperature? 2. How does the thickness of the depletion layer in a p-n junction vary with increase in reverse bias? 3. How does the energy gap in an intrinsic semiconductor vary, when doped with a pentavalent impurity? 4. Explain the mobility effects on carrier density. 5. What do you understand by the term “holes” in a semiconductor? Explain how they move under the influence of electric field. 6. What is the a.c response of the p-n diode? 7. How is the solar cell functioning? 1. In general what is the relation between density of states and energy? 2. What is meant by the term, doping of an intrinsic semiconductor? 3. Give the ratio of the number of holes and the number of conduction electrons in an intrinsic semiconductor. 4. Write the function of base region of a bipolar junction transistor. 5. Sketch the energy bands of a forward-biased degenerately doped pn junction and indicate how population inversion occurs. Analyze/ Evaluate
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