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प्रश्न
p - type semi-conductors are made by mixing silicon with impurities of ______.
विकल्प
germanium
boron
arsenic
antimony
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उत्तर
p - type semi-conductors are made by mixing silicon with impurities of boron.
Explanation:
This is because boron is a trivalent element (group 13) having three valence electrons, one fewer than silicon's four. When boron replaces silicon atoms in the crystal lattice, it causes a one-electron deficiency, resulting in a “hole” that works as a positive charge carrier, hence the “p-type” classification.
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संबंधित प्रश्न
In a semiconductor, acceptor impurity is.................................
- antimony
- indium
- phosphorous
- arsenic
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
Give reasons : Silicon on doping with Phosphorous forms n-type semiconductor.
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.
What is the ratio of octahedral holes to the number of anions in hexagonal closed packed structure?
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:
In n-type semiconductor, current is carried by ____________.
Which transition metal oxide has appearance and conductivity like that of copper?
To get n-type of semiconductor, germanium should be doped with ____________.
p-type semiconductors are formed when Si or Ge are doped with ____________.
Which of the following oxides behaves as conductor or insulator depending upon temperature?
To get a n-type semiconductor from silicon, it should be doped with a substance with valence ______.
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?
