Resistivity by Four Probe Method - Amrita University

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Resistivity and conductivity type are fundamental properties of semiconductors and are critical parameters in both materials research and wafer fabrication.The resistivity can affect a device's series resistance, threshold voltage, capacitance, and other parameters. Measuring a semiconductor material's resistivity is one of the most common electrical tests. four-point collinear probe and the appropriate test equipment can be used to determine both resistivity and conductivity type.
The four-point, or Kelvin, probe method is the most common way to measure a semiconductor material's resistivity. Two of the probes are used to source current and the other two probes are used to measure voltage. Using four probes eliminates measurement errors due to the probe resistance, the spreading resistance under each probe, and the contact resistance between each metal probe and the semiconductor material. This technique involves bringing four equally spaced probes into contact with the material of unknown resistance.

[@ocayaro]

Good tutorial, short and to the point.

[@shailendragarg2883]

nice video when we wish to learn more thing in less time with excellent way

[@subhajeetbanik8060]

Very nyc,in short timing clears all doubts even after performing dat lab in cllg.. Thumbs up :-D

[@goodwayinlife111]

THANK YOU
WOULD YOU MIND MAKE AVEDIO ON THIS TH-cam CHANNEL FOR THESE EXPERIMENT:
1-Resistivity of Semiconductor by Four Probe Method at different temperatures and determination of the band-gap
2-STUDY OF DIELECTRIC CONSTANT
3-Measurement of magnetoresistance
THANKS FOR ANY HELP

[@chetanv8345]

Good.... excellent explanation.

[@dr.ramannar4249]

its good video to learn about experiments

[@vinodmadhavakurup]

very good....and nice presentation....

[@nidhimittal7931]

what is use of zero adjustable in this apparatus

[@ricci1729]

The correction factor table is not correct.

[@Alexandreacv1]

good video