Dear researchers,
I have samples prepared by electropinning technique as a thin film i need to measure the electrical conductivity of it i found there are many methods like two point probe, four point prob, masking and using silver paste then physical vapor deposition method ... from your experience which one is the best for my work and why ?
Following @Ahmed Y. Yassin's comments, your electrospining polymer films are very likely less conducting which is difficult to use four point probe to measure. Unless you have highly conducive polymer films as the above researcher suggested. Otherwise, you need to make special layout of JV curves to extract the conductivity.
Please see the publications below:
https://www.researchgate.net/publication/292977747_Long-Range_Proton_Conduction_across_Free-Standing_Serum_Albumin_Mats
https://www.researchgate.net/publication/317285886_Electron_Hopping_Across_Hemin-Doped_Serum_Albumin_Mats_on_Centimeter-Length_Scales
Dear researchers,
Thank you for your comments...
But what about the third method as demonstrated by the picture
Two electrodes of silver are deposited on the membrane of polymer using physical vapor deposition and two wires of coppers connected to the silver electrodes by using a silver paste and from the other side are connected to the ohmmeter to measure the resistivity leading to measuring sigma from the existing parameters
Yang, Yang, Jianyong Ouyang, Liping Ma, RJ‐H. Tseng, and C‐W. Chu. "Electrical switching and bistability in organic/polymeric thin films and memory devices." Advanced Functional Materials 16, no. 8 (2006): 1001-1014.
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