Conductivity in the Semiconductor
The current flowing though a semiconductor material is depending on two types of phenomena. This defines how semiconductor conducts electricity through it.
semiconductors
Effect of the Heat and Light while movement of electrons in semiconductor
When conductor heated by external source, the atoms are situated in the fixed locations, tends to vibrate. This vibration causes release the free electron from an atom which movement in surrounding mass of the electrons.
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Semiconductor Materials
There are few materials which conductivity is around 10-4 ohm-m to 0.5 Ohm-m at normal ambient temperature. But materials are also having resistivity in this range. But a very important criteria that actual semiconductor materials are negative temperature co-efficient of resistance and act as insulator in absolute 0°K temperature.
Intrinsic Semiconductor
ntrinsic semi-conductor is chemically pure and no doped using any impurities. It is a single metal piece either silicon or germanium. All intrinsic semiconductors are obeying solid metals energy bond diagram. In an intrinsic semiconductor free electrons are almost equal to no of holes.
Energy Band for Conductors Insualtors Semiconductors
The amount of energy available in electron is depends on orbit of an atom which it configured. The energy levels of electrons within their shell can be caused due to the changes in their energy levels. According to their energy level the band are classified as below,
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Semiconductor an Overview
Some certain materials are in materials are behaves in between conductor and insulator. These materials are called as semiconductors. Its resistivity measure between insulator and conductor. These are few popular semiconductor materials are widely used world wide