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प्रश्न
Two crystals C1 and C2, made of pure silicon, are doped with arsenic and aluminium respectively.
Identify the extrinsic semiconductors so formed.
उत्तर
Arsenic is pentavalent. So, C1 doped with arsenic will form an n-type semiconductor.
Aluminium is trivalent. So, C2 doped with aluminium will form a p-type semiconductor.
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संबंधित प्रश्न
In a p-type semiconductos, which of the following statement is true:
When p-n junction diode is forward biased, then ______.
In p-type semiconductor, the dopant is ______.
The electron and hole concentration in a semiconductor in thermal equilibrium is given by ______.
Explain the following term:
Extrinsic semiconductor
Distinguish between n-type and p-type semiconductors.
In a pure semiconductor crystal of Si, if antimony is added then what type of extrinsic semiconductor is obtained. Draw the energy band diagram of this extrinsic semiconductor so formed.
In an extrinsic semiconductor, the number density of holes is 4 × 1020 m-3. If the number density of intrinsic carriers is 1.2 × 1015 m-3, the number density of electrons in it is ______.
Pieces of copper and of silicon are initially at room temperature. Both are heated to temperature T. The conductivity of ______.
What type of semiconductor is obtained when a crystal of silicon is doped with a trivalent element?
