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The electrical resistance of an electrical conductor is the opposition to the passage of an electric
current through that conductor; the inverse quantity is electrical conductance.The
semiconductor materials become a conductor of current.A
pure semiconductor material at absolute zero has the characteristics of an insulator because all
electrons are in the valence sector while the conduction sector is empty.Therefore, in semiconductors, the resistance
decreases with the increase in temperature.
The electrical resistance of an electrical conductor is the opposition to the passage of an electric
current through that conductor; the inverse quantity is electrical conductance. The resistance (R) of an
object is defined as the ratio of voltage across it (V) to current through it.
In semiconductors, the width of the energy gap (the energy difference between the valence band and
the conduction band) is relatively small, so it has properties between conductors and insulators. A
pure semiconductor material at absolute zero has the characteristics of an insulator because all
electrons are in the valence sector while the conduction sector is empty. As the temperature increases,
some electrons move from the valence sector to the conduction sector, leaving gaps in their place. The
semiconductor materials become a conductor of current. Therefore, in semiconductors, the resistance
decreases with the increase in temperature.
In a pure semiconductor the resistance R changes with the absolute temperature T0k
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