Methodology to measure conductivity using 4 probe after taking down voltage and current values.
Hi Siddhant, have a look at the following it gives a nice introduction to practical 4 point probe measurement.
http://www.utdallas.edu/~gpp052000/Docs/4PointProbe_Manual.pdf
Have a look at my paper intituled " Series expansion of electrostatic potential radiated by a point source in isotropic Maxwellian plasma" in Radio Science Mars 2095. Theoretical computation for any combination of quasi-pointual probes. Download the full text from my Research Gate contribution list at around year 1995. Regards. C. Béghin
Hello, I have a problem with a silicon wafer. Because the sheet Resistance is over 10^6 ohm/Sq. I don´t know why I have a silicon wafer so resistant.
For example, i give a potential of 7.7 Volts, then I measure 0.24 Volts and 0.08 microA.
Some idea?
Hello Nicolas Antonio Carvajal Herrera,
first, try to
1) form 4-Ohmic[1-3] electrical contacts on your Si-wafer.
Then try to
2) measure the sheet Resistance[4-6]
and compare it with the specs(?) of your Si-wafer.
1. https://www.researchgate.net/post/How_to_check_ohmic_contact_of_Al_on_p-type_silicon
2. Metal/Semiconductor Ohmic Contacts https://web.stanford.edu/class/ee311/NOTES/Ohmic_Contacts.pdf https://web.stanford.edu/class/ee311/NOTES/Contacts.pdf
3. Lecture 4: Electrical Contacts to Si http://www-inst.eecs.berkeley.edu/~ee143/fa10/lectures/Lec_03.pdf
4. Van der Pauw method https://en.wikipedia.org/wiki/Van_der_Pauw_method https://gato-docs.its.txstate.edu/cos-department-of-physics/manuals/CryoVanDerPauw/CryoVanDerPauw.pdf
5. Four-Point Probe Operation https://research.utdallas.edu/cleanroom/manuals/four-point-probe-operation
6. Miller FPP-5000 4-Point Probe http://lnf-wiki.eecs.umich.edu/wiki/Miller_FPP-5000_4-Point_Probe
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