ECE350

Crystal Structures

Introduction to crystal structures, lattices, Miller indices, and semiconductor materials

Lectures 2-3

Energy Bands

Bloch's theorem, Kronig-Penney model, and E-k diagrams with interactive visualizations

Lectures 6-7

Effective Mass

Effective mass concept, band diagrams in 3D, and direct vs. indirect bandgap semiconductors

Lectures 8-9

Carriers at Thermal Equilibrium

Density of states, Fermi-Dirac distribution, carrier concentrations

Lectures 9, 10, 11

Carrier Drift

Drift velocity, mobility, scattering mechanisms, velocity saturation, and Hall effect

Lecture 12

Band Bending and Electrostatics

Energy band bending

Lecture 13

Diffusion

Diffusion, built-in fields, Einstein's relation

Lecture 13

Generation, Recombination & Quasi-Fermi Levels

Excess carriers, carrier lifetime, quasi-Fermi levels, and injection levels

Lecture 14

Continuity Equation

Continuity equation, diffusion length, steady-state carrier diffusion, and drift-diffusion animation

Lecture 15

PN Junction Electrostatics (equilibrium)

Built-in potential, depletion layer width, charge density -> electric field -> potential

Lecture 17

PN Junction under Reverse Bias

Electrostatics, junction capacitance, breakdown

Lecture 18

PN Junction I–V Characteristics

Shockley diode equation, minority carrier diffusion, temperature dependence

Lectures 19–21

PN Junction: Approximations and Non-Idealities

One-sided junctions, short diode, ideality factor, SCR current, high injection, series resistance

Lectures 21–22

PN Junction: Small-Signal Models

Small-signal analysis, junction and diffusion capacitance, conductance, impedance vs. frequency

Lecture 22

PN Junction: Light Absorption

Optical absorption, photovoltaic effect, solar cell I-V, short-circuit current, open-circuit voltage

Lecture 23

BJT Current-Voltage Relations

Minority carrier profiles, collector/emitter/base currents, current gain, Early effect, Gummel plot, Ebers-Moll model

Lectures 25–26

Metal-Semiconductor Interfaces

Schottky diodes, ohmic contacts, energy band diagrams, electrostatics, IV characteristics, and tunneling junctions

Lectures 27–28

MOS Capacitor: Energy Bands & Electrostatics

Ideal MOS structure, regimes of operation, threshold condition, electrostatics, energy bands

Lectures 29–30

MOS Capacitor: C-V Characteristics

Charge distributions, dQ location, low-frequency vs. high-frequency inversion, interactive C-V explorer, 1/C² analysis

Lecture 31

MOS Capacitor: Non-Idealities

Work function mismatch, oxide charges, poly-gate depletion, inversion charge thickness, interface traps, interactive C-V with non-idealities, parameter extraction from C-V

Lecture 32

MOSFET: Introduction & Operation

MOSFET structure, CMOS, regions of operation, interactive IV explorer, threshold voltage extraction

Lecture 33

MOSFET I_DS–V_DS: Derivation and Modifications

Square-law IV derivation, body effect, velocity saturation, parasitic resistance, channel length modulation, subthreshold conduction, DIBL

Lecture 34