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प्रश्न
What type of semiconductor is obtained when a crystal of silicon is doped with a trivalent element?
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उत्तर
P-type semiconductor.
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संबंधित प्रश्न
In n-type semiconductor, the fifth electron ______.
Explain the following term:
Extrinsic semiconductor
Sn, C, and Si, Ge are all group XIV elements. Yet, Sn is a conductor, C is an insulator while Si and Ge are semiconductors. Why?
Two crystals C1 and C2, made of pure silicon, are doped with arsenic and aluminium respectively.
Identify the extrinsic semiconductors so formed.
Name the extrinsic semiconductors formed when pure germanium is doped with a trivalent impurity. Draw the energy band diagram of extrinsic semiconductors so formed.
- Assertion (A): Putting the p-type semiconductor slab directly in physical contact with the n-type semiconductor slab cannot form the pn junction.
- Reason (R): The roughness at contact will be much more than inter atomic crystal spacing and continuous flow of charge carriers is not possible.
What is a doped semiconductor called?
What is the semiconductor to which the dopant is added called?
From which neighbouring groups of the periodic table are dopants for silicon and germanium chosen?
Which type of dopant is boron (B)?
