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Essay Galaxy - Semiconductors : The Silicon Chip
Semiconductors : The Silicon Chip
Silicon is the raw material most often used in integrated circuit (IC)
fabrication. It is the second most abundant substance on the earth. It is
extracted from rocks and common beach sand and put through an exhaustive
purification process. In this form, silicon is the purist industrial
substance that man produces, with impurities comprising less than one part
in a billion. That is the equivalent of one tennis ball in a string of
golf balls stretching from the earth to the moon.
Semiconductors are usually materials which have energy-band gaps
smaller than 2eV. An important property of semiconductors is the ability
to change their resistivity over several orders of magnitude by doping.
Semiconductors have electrical resistivities between 10-5 and 107 ohms.
Semiconductors can be crystalline or amorphous. Elemental semi....
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Number Of Pages: 6 |
Number Of Words: 1458 |
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