Semiconductors are materials that exhibit electrical behavior somewhere between that of insulators and that of conductors. Conductors present very low resistance to the flow of current, whereas insulators conduct very little current even when a large potential difference is applied. A semiconductor exhibits intermediate conductivity because it has more available charge carriers than an insulator but fewer than a conductor. Examples of semiconductors are silicon and germanium.
Why are semiconductors so important? Well, with the right amount of impurities and clever arrangement of materials, semiconductors can be used in the fabrication of resistors, capacitors, inductors, and—most importantly—transistors. It is because of semiconductors that we have incredibly complex technology such as computers and cell phones; these devices are based on integrated circuits, which can combine millions or even billions of transistors into one small package.
- No image available1: Amplifiers and Active Devices
- No image available2: Solid-state Device Theory
- No image available3: Diodes and Rectifiers
- No image available4: Bipolar Junction Transistors
- No image available5: Junction Field-effect Transistors
- No image available6: Insulated-gate Field-effect Transistors
- No image available7: Thyristors
- No image available8: Operational Amplifiers
- No image available9: Practical Analog Semiconductor Circuits
- No image available10: Active Filters
- No image available11: DC Motor Drives
- No image available12: Inverters And AC Motor Drives
- No image available13: Electron Tubes
- No image available14: Contributor List