Definition
A semiconductor is a material that has electrical conductivity between that of a conductor (like copper) and an insulator (like rubber). It's like a switch that can sometimes conduct electricity and sometimes not. 💡 The conductivity can be controlled by adding impurities or applying an electric field. Semiconductors are the backbone of modern electronics, used in transistors, diodes, and integrated circuits. Think of it as the magic ingredient in your phone and computer.