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In which of the following semiconductor, the concentration of the holes and electrons is equal?
- a)Intrinsic
- b)Extrinsic
- c)Compound
- d)Elemental
Correct answer is option 'A'. Can you explain this answer?
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In which of the following semiconductor, the concentration of the hole...
In the intrinsic semiconductor, ni=pi that is the number of the electrons is equal to the number of the holes. Whereas in the extrinsic conductor ni is not equal to pi.
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In which of the following semiconductor, the concentration of the hole...
Answer:
Therefore, the correct option is A) Intrinsic semiconductor, where the concentration of holes and electrons is equal due to the thermal generation of electron-hole pairs.
- Intrinsic Semiconductor:
- Extrinsic Semiconductor:
- Compound Semiconductor:
- Elemental Semiconductor:
In an intrinsic semiconductor, the concentration of holes and electrons is equal. An intrinsic semiconductor is a pure semiconductor material like silicon or germanium, which has been doped with impurities. It is also known as an undoped semiconductor. In an intrinsic semiconductor, the concentration of free electrons and holes is equal due to the thermal generation of electron-hole pairs. The valence band is completely filled, and the conduction band is completely empty at absolute zero temperature.
An extrinsic semiconductor is a semiconductor material that has been intentionally doped with impurities to modify its electrical properties. These impurities are either donors (which provide extra free electrons) or acceptors (which create holes). In an extrinsic semiconductor, the concentration of holes and electrons is not equal. The concentration of either electrons or holes depends on the type of doping - n-type or p-type.
A compound semiconductor is a semiconductor made up of two or more elements from different groups in the periodic table. Examples of compound semiconductors include gallium arsenide (GaAs), indium phosphide (InP), and silicon germanium (SiGe). In a compound semiconductor, the concentration of holes and electrons is not necessarily equal and depends on the specific material and its doping.
An elemental semiconductor is a semiconductor made up of a single chemical element. Examples of elemental semiconductors include silicon (Si) and germanium (Ge). In an elemental semiconductor, the concentration of holes and electrons is not necessarily equal and depends on the specific material and its doping.
Therefore, the correct option is A) Intrinsic semiconductor, where the concentration of holes and electrons is equal due to the thermal generation of electron-hole pairs.
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In which of the following semiconductor, the concentration of the holes and electrons is equal?a)Intrinsicb)Extrinsicc)Compoundd)ElementalCorrect answer is option 'A'. Can you explain this answer?
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