I need to measure the electron transfer properties of the TiCl4 treated ZnO photoanode. I'm trying to measure EIS, and I always end up with 2 semicircles. I could not observe a transmission line feature in de obtained Nyquist plot. Could someone help me by explaining the EIS measuring conditions?
Can you supply the data? Did you try to fit it to a transmission line model?
It would be better if you can present the Nyquist diagram here. Although the plots of DSSCs usually show one or two or three semicircles, it is strongly depends on the measurement conditions, including the bias potentials, the illumination conductions, etc. So, please present you data and the related experimental parameters.
Dear Alagappan Annamalai, Try to fit your EIS Nyquist plot with proper circuit. otherwise try to use Constant phase Element (CPE) instead of capacitance (C), you may get single semi circle.
The number of semicircles does not exactly define the properties of DSSC.
Try to fit it properly to get the inset of the type of phenomena taking place.
Can you describe the Nyquist plot much detail? Im guessing the first semicircle is very small compare to the second.
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