Distinguish between p and n-type semiconductors?

In summary, the Hall Effect can be used to distinguish between p and n-type semiconductors by measuring the polarity of the Hall Voltage, which depends on the majority charge carriers present in the material. This can be achieved by connecting a voltmeter and observing the sign of the voltage.
  • #1
islandguy
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how can i use the hall effect to destinguish between p and n-type semiconductors?



i thank u in advance
kris
 
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  • #2
islandguy said:
how can i use the hall effect to destinguish between p and n-type semiconductors?



i thank u in advance
kris

This question is difficult to answer without the use of figures, so look here:

http://hyperphysics.phy-astr.gsu.edu/hbase/magnetic/hall.html

Pay particular attention to the polarity of the hall voltage and how you connect the voltmeter.

Zz.
 
  • #3
In particular, the polarity of the Hall Voltage depends on the sign of the majority charge carriers. eg: p-type => holes are majority charge carriers => positive charge.
 

1. What is the difference between p-type and n-type semiconductors?

P-type semiconductors have an excess of positively charged holes, while n-type semiconductors have an excess of negatively charged electrons.

2. How do p-type and n-type semiconductors behave differently?

P-type semiconductors conduct electricity by allowing holes to move through the material, while n-type semiconductors conduct electricity by allowing electrons to move through the material.

3. What causes a semiconductor to be p-type or n-type?

The addition of impurities, called dopants, creates p-type and n-type semiconductors. For p-type semiconductors, dopants with fewer valence electrons than the semiconductor material are added, while for n-type semiconductors, dopants with more valence electrons are added.

4. How do p-type and n-type semiconductors work together in electronic devices?

In electronic devices, p-type and n-type semiconductors are often used in conjunction with each other to create a p-n junction. This junction allows for the flow of electrons from n-type material to p-type material, creating a diode that can control the direction of electric current.

5. Are p-type and n-type semiconductors used for different purposes?

Yes, p-type and n-type semiconductors have different properties and are therefore used for different purposes in electronic devices. P-type semiconductors are often used in transistors and diodes, while n-type semiconductors are commonly used in solar cells and integrated circuits.

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