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प्रश्न
Name the two types of atoms used for doping of Ge/Si.
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उत्तर
Doping increases the conductivity of a semiconductor.
For doping pure Si, Ge, and pentavalent phosphorus is used to convert it to the n-type semiconductor.
Trivalent aluminium is used to convert pure Si, and Ge to the p-type semiconductor.
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संबंधित प्रश्न
Let np and ne be the numbers of holes and conduction electrons in an extrinsic semiconductor.
Answer in detail.
Distinguish between intrinsic semiconductors and extrinsic semiconductors.
Let nh and ne be the number of holes and conduction electrons respectively in a semiconductor. Then ______.
In a semiconductor, the number of holes and number of free electrons are represented as 'nh' and 'ne' respectively. Which one of the following statements is TRUE for the semiconductor?
In a pure or intrinsic semiconductor, valence band holes and conduction-band electrons are always ______.
Explain the following term:
Intrinsic semiconductor
What is meant by doping of an intrinsic semiconductor?
A pure semiconductor has equal electron and hole concentration of 1016 m-3. Doping by indium increases nh to 5 × 1022 m-3. Then, the value of ne in the doped semiconductor is ______.
Answer the following giving reasons:
Impurities are added to intrinsic semiconductors.
Identify the WRONG statement from the following. In an intrinsic semiconductor ______.
