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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.
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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
A donor impurity results in ______.
Semiconductors formed by doping germanium (Ge) with aluminium (Z = 13) and antimony (Z = 51) are ______.
- 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 type of semiconductor is obtained when a crystal of silicon is doped with a trivalent element?
What is the process of adding a suitable impurity to increase a semiconductor's electrical conductivity called?
What is a doped semiconductor called?
To which group of the periodic table do silicon and germanium belong?
From which neighbouring groups of the periodic table are dopants for silicon and germanium chosen?
Which type of dopant is antimony (Sb)?
Which type of dopant is boron (B)?
