1.1 Introduction1.2 Current Flow and Concept of Holes1.3 Free Carriers—Excitation and Doping1.4 Intrinsic and Extrinsic Semiconductor1.5 Tetravalent Elements1.6 Effect of Temperature on Intrinsic Conductivity1.7 Conduction of Current1.8 Extrinsic Semiconductor1.9 Energy Distribution1.10 Electron Emission from Metal1.11 Carrier Concentration in Intrinsic Semiconductor1.12 Fermi Level in Intrinsic Semiconductor1.13 Fermi Level in Extrinsic Semiconductor1.14 Hall EffectSolved ProblemsQuestions for PracticeMultiple Choice QuestionsAnswers to Multiple Choice Questions