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Drexel University ECE Department ECEE 302 Electronic Devices 7 October 2002 Revised: 14 October 2002 ECEE 302: Electronic Devices 1st Examination Review Guide – Chapter 1 Crystal Structure – Chapter 2 Physical Foundation – Chapter 3 Carriers Properties (pages 55-70 only) – Representative Problems 14 October 2002 BMF-Lecture 3-101402-Page -1 Copyright © 2002 Barry Fell Drexel University ECE Department ECEE 302 Electronic Devices Chp 1 - Crystal Properties • Crystal Structure – Lattice – Basis – Primitive and Unit Cell • Basic crystal lattices – – – – Simple Cubic Body Centered Cubic Face Centered Cubic Diamond Lattice (Addition) • Properties of basic crystal lattices – Number of atoms per unit cell – close packing fraction • Miller Indices and Crystal Directions 14 October 2002 BMF-Lecture 3-101402-Page -2 Copyright © 2002 Barry Fell Drexel University ECE Department • • • • • • Energy Operator Momentum Operator Potential Well Discrete Energy Levels from Boundary conditions Expectation value of an operator Hydrogen Atom Quantum numbers – – – – • • Chp 2 - Atoms and Electrons Photo-electric Effect Bohr Atom and calculation of spectral line frequencies or wavelength Uncertainty principle deBroglie-Einstein Relations Wave Function and Wave Properties Schrodinger Wave Equation – – – • • ECEE 302 Electronic Devices n-Energy quantum number l-angular momentum quantum number m-magnetic quantum number s - electron spin quantum number Pauli Exclusion Principle Structure of the Periodic Table – – relation of orbital shells with each element building up principle 14 October 2002 BMF-Lecture 3-101402-Page -3 Copyright © 2002 Barry Fell Drexel University ECE Department ECEE 302 Electronic Devices Chp 3 - Energy Bands and Charge Carriers • Atomic Bonding – ionic – covalent • Band Theory of Solids – – – – Band formation (Valance Band and Conduction Band) Metals Insulators Semi-Conductors • Direct and Indirect Semiconductors (Energy and momentum transitions) • Electrons and Holes (pp 66-70) • Charge carriers (Electrons and Holes) – Effective Mass (1-dimensional only) – intrinsic/extrinsic semi-conductors – n-Type and p-Type material 14 October 2002 Material below this line and on the next page will NOT be covered on Examination 1. BMF-Lecture 3-101402-Page -4 Copyright © 2002 Barry Fell Drexel University ECE Department ECEE 302 Electronic Devices Chp 3 - Energy Bands and Charge Carriers (continued) • Carrier (electron and hole) Concentration – Fermi distribution/Fermi Energy Level – density of states – Calculation of electron and hole concentrations • Carrier (electron and hole) Behavior in a Solid – – Theory of Conductivity Current Density – Carrier mobility – Hall Effect • Invariance of the Fermi Level at Equilibrium 14 October 2002 BMF-Lecture 3-101402-Page -5 Copyright © 2002 Barry Fell Drexel University ECE Department ECEE 302 Electronic Devices Representative Problems • Chapter 1 – 1.1, 1.2,1.3,1.8,1.12,1.13,1.14 • Chapter 2 – 2.1(c), 2.2, 2.3, 2.4, 2.5, 2.6, 2.8, 2.9, 2.10, 2.11,2.12 • Chapter 3 pp. 55- 70 (for this examination) – 3.1, 3.9 (a)-only 14 October 2002 BMF-Lecture 3-101402-Page -6 Copyright © 2002 Barry Fell