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प्रश्न
Give reasons : Silicon on doping with Phosphorous forms n-type semiconductor.
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उत्तर
Phosphorus is electron rich as it is element of group 15. When it is doped with element of group 14 i.e silicon an n-type semiconductor will form because here conductivity is due to the presence of extra electrons.
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संबंधित प्रश्न
What type of semiconductor is obtained when silicon is doped with boron?
A pure semiconductor is ________.
(a) an extrinsic semiconductor
(b) an intrinsic semiconductor
(c) p-type semiconductor
(d) n-type semiconductor
Distinguish between p-type and n-type semiconductors.
A group of 14 elements is converted into n-type semiconductor by doping it with:
Group 14 element is converted to p-type semiconductor by doping it with:
Which transition metal oxide has appearance and conductivity like that of copper?
Under the influence of electric field, which of the following statements is true about the movement of electrons and holes in a p-type semiconductor?
(i) Electron will move towards the positvely charged plate through electron holes.
(ii) Holes will appear to be moving towards the negatively charged plate.
(iii) Both electrons and holes appear to move towards the positively charged plate.
(iv) Movement of electrons is not related to the movement of holes.
A perfect crystal of silicon (Figure) is doped with some elements as given in the options. Which of these options show n-type semiconductors?
Explain why does conductivity of germanium crystals increase on doping with galium.
How does the doping increase the conductivity of semiconductors?
