Beschreibung
Semiconductor devices are electronic components that exploit the electronic properties of semiconductor material, principally silicon, germanium, and gallium arsenide, as well as organic semiconductors. Semiconductor devices have replaced thermionic devices (vacuum tubes) in most applications. They use electronic conduction in the solid state as opposed to the gaseous state or thermionic emission in a high vacuum. Semiconductor devices are manufactured both as single discrete devices and as integrated circuits (ICs), which consist of a number - from a few (as low as two) to billions - of devices manufactured and interconnected on a single semiconductor substrate, or wafer. Semiconductor materials are useful because their behaviour can be easily manipulated by the addition of impurities, known as doping. Semiconductor conductivity can be controlled by the introduction of an electric or magnetic field, by exposure to light or heat, or by the mechanical deformation of a doped monocrystalline grid; thus, semiconductors can make excellent sensors. Current conduction in a semiconductor occurs via mobile or "free" electrons and holes, collectively known as charge carriers.
Autorenporträt
Mr.L.Anbarasu, born in Erode District, Tamil Nadu State, India in 1978, received AMIE in Electrical Engineering from The Institution of Engineers(India), Kolkata. M.E., in Power Electronics and Drives from Anna University, Chennai in 2004 and 2007 respectively. His research interest includes renewable energy system and power electronics
