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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
p - type semi-conductors are made by mixing silicon with impurities of ______.
What type of semiconductor is obtained when silicon is doped with boron?
To prepare n-type semiconductor the impurity to be added to silicon should have the following number of valence electrons:
(a) 2
(b) 3
(c) 4
(d) 5
What is the ratio of octahedral holes to the number of anions in hexagonal closed packed structure?
In n-type semiconductor, current is carried by ____________.
Which of the following oxides behaves as conductor or insulator depending upon temperature?
Which of the following is true about the charge acquired by p-type semiconductors?
To get a n-type semiconductor from silicon, it should be doped with a substance with valence ______.
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?
