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Created page with "== Introduction == A Semiconductor device is an electronic component that exploits the electronic properties of semiconductor materials, primarily silicon, germanium, and gallium arsenide, as well as organic semiconductors. Semiconductor devices have replaced 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. Image:Detail-55710.jpg|thumb|center|A close-up ima..."
