Introduction to Semiconductor Doping

Q1: What's a semiconductor?
A1: A semiconductor is a substance whose electrical conductance falls between a conductor and an insulator.

Q2: Why should I care about semiconductors?
A2: Semiconductor devices are ubiquitous in modern electronics.

Q3: What's doping?
A3: Doping is the technique by which impurities are introduced to a pure semiconductor.

Q4: Why should I care about doping?
A4: You can use doping to alter the electrical properties of (what were originally pure) semiconductors.