Permachart - Marketing Reference Guide: Charge Pump, Diode, Electrolytic Capacitor
4 Jun 2015
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Document Summary
L e a r n r e f e r e n c e r e v i e w permacharts. Valence and conduction bands for electrons overlap at room temperature, allowing relatively free movement of electrons. Semiconductor valence and conduction bands have an energy gap that can be jumped by a significant number of thermally excited electrons at room temperature, making these materials semiconductors: common semiconductor materials include silicon and germanium. N-type material majority of free charge carriers in semiconductor material are negative. P-type material majority of free charge carriers in semiconductor. Mixing in a few atoms of a different material into a semiconductor material, in order to generate more charge carriers (such as, doping a crystal of pure silicon with arsenic atoms to form n-type material) Junction of p- and n-type semiconductor materials which develop an electric field across the junction that repels both majority carriers away from the junction.
